1638 lines
47 KiB
C
1638 lines
47 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2006-03-13 bernard first version
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* 2012-05-15 lgnq modified according bernard's implementation.
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* 2012-05-28 bernard code cleanup
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* 2012-11-23 bernard fix compiler warning.
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* 2013-02-20 bernard use RT_SERIAL_RB_BUFSZ to define
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* the size of ring buffer.
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* 2014-07-10 bernard rewrite serial framework
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* 2014-12-31 bernard use open_flag for poll_tx stream mode.
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* 2015-05-19 Quintin fix DMA tx mod tx_dma->activated flag !=RT_FALSE BUG
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* in open function.
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* 2015-11-10 bernard fix the poll rx issue when there is no data.
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* 2016-05-10 armink add fifo mode to DMA rx when serial->config.bufsz != 0.
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* 2017-01-19 aubr.cool prevent change serial rx bufsz when serial is opened.
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* 2017-11-07 JasonJia fix data bits error issue when using tcsetattr.
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* 2017-11-15 JasonJia fix poll rx issue when data is full.
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* add TCFLSH and FIONREAD support.
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* 2018-12-08 Ernest Chen add DMA choice
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* 2020-09-14 WillianChan add a line feed to the carriage return character
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* when using interrupt tx
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* 2020-12-14 Meco Man implement function of setting window's size(TIOCSWINSZ)
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* 2021-08-22 Meco Man implement function of getting window's size(TIOCGWINSZ)
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* 2022-04-10 THEWON serialX first version
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* 2022-06-08 THEWON add No TX Empty interrupt support
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* 2023-02-15 THEWON add init ops
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include <rtdevice.h>
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#ifdef RT_USING_SERIAL
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#define DBG_TAG "UART"
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#define DBG_LVL DBG_INFO
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#include <rtdbg.h>
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#ifdef RT_USING_POSIX_STDIO
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#if RTTHREAD_VERSION <= RT_VERSION_CHECK(4, 0, 3)
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#include <dfs_posix.h>
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#include <dfs_poll.h>
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#else
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#include <dfs_file.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#endif
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#ifdef RT_USING_POSIX_TERMIOS
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#if RTTHREAD_VERSION <= RT_VERSION_CHECK(4, 0, 3)
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#include <posix_termios.h>
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#else
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#include <termios.h>
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#endif
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#endif
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/* it's possible the 'getc/putc' is defined by stdio.h in gcc/newlib. */
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#ifdef getc
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#undef getc
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#endif
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#ifdef putc
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#undef putc
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#endif
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static rt_err_t serial_fops_rx_ind(rt_device_t dev, rt_size_t size)
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{
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rt_wqueue_wakeup(&(dev->wait_queue), (void*)POLLIN);
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return RT_EOK;
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}
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/* fops for serial */
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static int serial_fops_open(struct dfs_fd *fd)
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{
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rt_err_t ret = 0;
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rt_uint16_t flags = 0;
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rt_device_t device;
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device = (rt_device_t)fd->data;
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RT_ASSERT(device != RT_NULL);
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switch (fd->flags & O_ACCMODE)
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{
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case O_RDONLY:
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LOG_D("fops open: O_RDONLY!");
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flags = RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_RDONLY;
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break;
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case O_WRONLY:
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LOG_D("fops open: O_WRONLY!");
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flags = RT_DEVICE_FLAG_INT_TX | RT_DEVICE_FLAG_WRONLY;
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break;
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case O_RDWR:
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LOG_D("fops open: O_RDWR!");
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flags = RT_DEVICE_FLAG_RDWR
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| RT_DEVICE_FLAG_INT_RX
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| RT_DEVICE_FLAG_INT_TX;
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break;
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default:
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LOG_E("fops open: unknown mode - %d!", fd->flags & O_ACCMODE);
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break;
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}
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if ((fd->flags & O_NONBLOCK) != 0) {
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flags |= RT_DEVICE_OFLAG_NONBLOCKING;
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}
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ret = rt_device_open(device, flags);
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if (ret == RT_EOK) {
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if ((fd->flags & O_ACCMODE) != O_WRONLY) {
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rt_device_set_rx_indicate(device, serial_fops_rx_ind);
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}
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return 0;
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}
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return ret;
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}
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static int serial_fops_close(struct dfs_fd *fd)
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{
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rt_device_t device;
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device = (rt_device_t)fd->data;
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rt_device_close(device);
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return 0;
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}
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static int serial_fops_ioctl(struct dfs_fd *fd, int cmd, void *args)
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{
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rt_device_t device;
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device = (rt_device_t)fd->data;
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switch (cmd)
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{
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case FIONREAD:
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break;
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case FIONWRITE:
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break;
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}
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return rt_device_control(device, cmd, args);
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}
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static int serial_fops_read(struct dfs_fd *fd, void *buf, size_t count)
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{
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int size = 0;
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int flags = 0;
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rt_device_t device;
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flags = fd->flags & O_ACCMODE;
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if (flags == O_WRONLY) {
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return -EIO;
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}
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device = (rt_device_t)fd->data;
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do
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{
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size = rt_device_read(device, -1, buf, count);
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if (size <= 0)
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{
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if (fd->flags & O_NONBLOCK)
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{
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size = -EAGAIN;
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break;
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}
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rt_wqueue_wait(&(device->wait_queue), 0, RT_WAITING_FOREVER);
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}
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}while (size <= 0);
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return size;
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}
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static int serial_fops_write(struct dfs_fd *fd, const void *buf, size_t count)
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{
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int flags = 0;
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rt_device_t device;
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flags = fd->flags & O_ACCMODE;
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if (flags == O_RDONLY) {
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return -EIO;
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}
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device = (rt_device_t)fd->data;
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return rt_device_write(device, -1, buf, count);
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}
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static int serial_fops_flush(struct dfs_fd *fd)
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{
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rt_device_t device;
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device = (rt_device_t)fd->data;
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return rt_device_flush(device);
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}
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static int serial_fops_poll(struct dfs_fd *fd, struct rt_pollreq *req)
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{
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int mask = 0;
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int flags = 0;
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rt_device_t device;
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struct rt_serial_device *serial;
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device = (rt_device_t)fd->data;
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RT_ASSERT(device != RT_NULL);
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serial = (struct rt_serial_device *)device;
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/* only support POLLIN */
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flags = fd->flags & O_ACCMODE;
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if (flags == O_RDONLY || flags == O_RDWR)
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{
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rt_base_t level;
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struct rt_serial_fifo* rx_fifo;
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rt_poll_add(&(device->wait_queue), req);
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rx_fifo = (struct rt_serial_fifo*) serial->serial_rx;
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level = rt_hw_interrupt_disable();
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if ((rx_fifo->get_index != rx_fifo->put_index) || (rx_fifo->get_index == rx_fifo->put_index && rx_fifo->is_full == RT_TRUE))
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{
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mask |= POLLIN;
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}
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rt_hw_interrupt_enable(level);
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}
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return mask;
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}
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const static struct dfs_file_ops _serial_fops =
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{
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serial_fops_open,
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serial_fops_close,
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serial_fops_ioctl,
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serial_fops_read,
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serial_fops_write,
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serial_fops_flush, /* flush */
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RT_NULL, /* lseek */
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RT_NULL, /* getdents */
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serial_fops_poll,
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};
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#endif
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/**
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* Calculate fifo data length.
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*
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* @param fifo the data fifo of serial device
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*
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* @return length
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*/
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rt_inline rt_ssize_t _serial_fifo_calc_data_len(struct rt_serial_fifo *fifo)
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{
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rt_ssize_t size;
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if (fifo->put_index == fifo->get_index) {
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size = (fifo->is_full == RT_FALSE) ? 0 : fifo->buf_sz;
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} else if (fifo->put_index > fifo->get_index) {
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size = fifo->put_index - fifo->get_index;
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} else {
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size = fifo->buf_sz - (fifo->get_index - fifo->put_index);
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}
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return size;
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}
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rt_inline void _serial_fifo_push_data(struct rt_serial_fifo *fifo, rt_uint8_t ch)
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{
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fifo->buffer[fifo->put_index] = ch;
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fifo->put_index += 1;
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if (fifo->put_index >= fifo->buf_sz) fifo->put_index = 0;
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}
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rt_inline rt_uint8_t _serial_fifo_pop_data(struct rt_serial_fifo *fifo)
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{
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rt_uint8_t ch;
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ch = fifo->buffer[fifo->get_index];
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fifo->get_index += 1;
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if (fifo->get_index >= fifo->buf_sz) fifo->get_index = 0;
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return ch;
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}
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/*
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* Serial poll routines
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*/
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rt_inline int _serial_poll_rx(struct rt_serial_device *serial, rt_uint8_t *data, int length)
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{
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int ch;
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int size;
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RT_ASSERT(serial != RT_NULL);
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size = length;
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while (length)
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{
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ch = serial->ops->getc(serial);
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if (ch == -1) break;
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*data = ch;
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data++; length--;
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}
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return size - length;
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}
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rt_inline int _serial_poll_tx(struct rt_serial_device *serial, const rt_uint8_t *data, int length)
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{
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int size;
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rt_uint8_t last_char = 0;
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RT_ASSERT(serial != RT_NULL);
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size = length;
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while (length)
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{
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/*
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* to be polite with serial console add a line feed
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* to the carriage return character
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*/
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if (*data == '\n' &&
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(serial->parent.open_flag & RT_DEVICE_FLAG_STREAM) == RT_DEVICE_FLAG_STREAM &&
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last_char != '\r')
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{
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serial->ops->putc(serial, '\r');
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last_char = 0;
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} else if (*data == '\r') {
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last_char = '\r';
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} else {
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last_char = 0;
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}
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serial->ops->putc(serial, *data);
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data++; length--;
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}
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return size - length;
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}
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/*
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* Serial interrupt routines
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*/
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rt_inline int _serial_fifo_rx(struct rt_serial_device *serial, rt_uint8_t *data, int length)
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{
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rt_size_t len, size;
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struct rt_serial_fifo* rx_fifo;
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rt_base_t level;
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RT_ASSERT(serial != RT_NULL);
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if (length == 0) return 0;
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rx_fifo = (struct rt_serial_fifo*) serial->serial_rx;
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/* disable interrupt */
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level = rt_hw_interrupt_disable();
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// serial->ops->disable_interrupt(serial);
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len = _serial_fifo_calc_data_len(rx_fifo);
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if ((len == 0) && // non-blocking io mode
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(serial->parent.open_flag & RT_DEVICE_OFLAG_NONBLOCKING) == RT_DEVICE_OFLAG_NONBLOCKING) {
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/* enable interrupt */
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rt_hw_interrupt_enable(level);
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// serial->ops->enable_interrupt(serial);
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return 0;
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}
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if ((len == 0) && // blocking io mode
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(serial->parent.open_flag & RT_DEVICE_OFLAG_NONBLOCKING) != RT_DEVICE_OFLAG_NONBLOCKING) {
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rt_err_t ret;
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do {
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/* enable interrupt */
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rt_hw_interrupt_enable(level);
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// serial->ops->enable_interrupt(serial);
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#ifndef RT_SERIAL_USE_EVENT
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ret = rt_completion_wait(&(serial->completion_rx), RT_WAITING_FOREVER);
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#else
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ret = rt_event_recv(serial->rx_done, RT_SERIAL_EVENT_RXDONE, RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR, RT_WAITING_FOREVER, RT_NULL);
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#endif
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if (ret == RT_EOK || ret == -RT_ETIMEOUT) {
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} else {
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return 0;
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}
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/* disable interrupt */
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level = rt_hw_interrupt_disable();
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// serial->ops->disable_interrupt(serial);
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len = _serial_fifo_calc_data_len(rx_fifo);
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} while(len == 0);
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}
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if (len > length) {
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len = length;
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}
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/* read from software FIFO */
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for (size = 0; size < len; size++) {
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/* otherwise there's the data: */
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*data = _serial_fifo_pop_data(rx_fifo);
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data++;
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}
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rx_fifo->is_full = RT_FALSE;
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/* enable interrupt */
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rt_hw_interrupt_enable(level);
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// serial->ops->enable_interrupt(serial);
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return size;
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}
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rt_inline int _serial_int_tx(struct rt_serial_device *serial, const rt_uint8_t *data, int length)
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{
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rt_size_t len, length_t, size;
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struct rt_serial_fifo *tx_fifo;
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rt_base_t level;
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rt_uint8_t ch = 0;
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static rt_uint8_t last_char = 0;
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RT_ASSERT(serial != RT_NULL);
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if (length == 0) return 0;
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tx_fifo = (struct rt_serial_fifo*) serial->serial_tx;
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size = 0;
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do {
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length_t = length - size;
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/* disable interrupt */
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level = rt_hw_interrupt_disable();
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// serial->ops->disable_interrupt(serial);
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len = tx_fifo->buf_sz - _serial_fifo_calc_data_len(tx_fifo);
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if ((len == 0) && // non-blocking io mode
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(serial->parent.open_flag & RT_DEVICE_OFLAG_NONBLOCKING) == RT_DEVICE_OFLAG_NONBLOCKING) {
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/* enable interrupt */
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rt_hw_interrupt_enable(level);
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// serial->ops->enable_interrupt(serial);
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break;
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}
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if ((len == 0) && // blocking io mode
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(serial->parent.open_flag & RT_DEVICE_OFLAG_NONBLOCKING) != RT_DEVICE_OFLAG_NONBLOCKING) {
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rt_err_t ret;
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/* enable interrupt */
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rt_hw_interrupt_enable(level);
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// serial->ops->enable_interrupt(serial);
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#ifndef RT_SERIAL_USE_EVENT
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ret = rt_completion_wait(&(serial->completion_tx), RT_WAITING_FOREVER);
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#else
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ret = rt_event_recv(serial->tx_done, RT_SERIAL_EVENT_TXDONE, RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR, RT_WAITING_FOREVER, RT_NULL);
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#endif
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if (ret == RT_EOK || ret == -RT_ETIMEOUT) {
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continue;
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} else {
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return size;
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}
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}
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if (len > length_t) {
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len = length_t;
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}
|
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/* copy to software FIFO */
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while (len > 0) {
|
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/*
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* to be polite with serial console add a line feed
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* to the carriage return character
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*/
|
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if (*data == '\n' &&
|
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(serial->parent.open_flag & RT_DEVICE_FLAG_STREAM) == RT_DEVICE_FLAG_STREAM &&
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last_char != '\r') {
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_serial_fifo_push_data(tx_fifo, '\r');
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last_char = '\r';
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if (len == 1) {
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break;
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} else {
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len--;
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}
|
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} else if (*data == '\r') {
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last_char = '\r';
|
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} else {
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last_char = 0;
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}
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_serial_fifo_push_data(tx_fifo, *data);
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data++; len--; size++;
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}
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/* if the next position is read index, discard this 'read char' */
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if (tx_fifo->put_index == tx_fifo->get_index) {
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tx_fifo->is_full = RT_TRUE;
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}
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|
|
// TODO: start tx
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#if defined (RT_SERIAL_NO_TXEIT)
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if (serial->ops->is_int_txing != RT_NULL && serial->ops->is_int_txing(serial) == RT_FALSE) {
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ch = _serial_fifo_pop_data(tx_fifo);
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serial->ops->start_tx(serial, ch);
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}
|
|
#else
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serial->ops->start_tx(serial);
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|
#endif
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|
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/* enable interrupt */
|
|
rt_hw_interrupt_enable(level);
|
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// serial->ops->enable_interrupt(serial);
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} while(size < length);
|
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|
|
return size;
|
|
}
|
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|
|
#ifdef RT_SERIAL_USING_DMA
|
|
/*
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|
* Serial DMA routines
|
|
*/
|
|
rt_inline int _serial_dma_tx(struct rt_serial_device *serial, const rt_uint8_t *data, int length)
|
|
{
|
|
rt_size_t len, length_t, size, i;
|
|
struct rt_serial_fifo *tx_fifo;
|
|
rt_base_t level;
|
|
rt_uint8_t ch;
|
|
static rt_uint8_t last_char = 0;
|
|
|
|
RT_ASSERT(serial != RT_NULL);
|
|
|
|
if (length == 0) return 0;
|
|
|
|
tx_fifo = (struct rt_serial_fifo*) serial->serial_tx;
|
|
|
|
size = 0;
|
|
do {
|
|
length_t = length - size;
|
|
/* disable interrupt */
|
|
level = rt_hw_interrupt_disable();
|
|
// serial->ops->disable_interrupt(serial);
|
|
|
|
len = tx_fifo->buf_sz - _serial_fifo_calc_data_len(tx_fifo);
|
|
|
|
if ((len == 0) && // non-blocking io mode
|
|
(serial->parent.open_flag & RT_DEVICE_OFLAG_NONBLOCKING) == RT_DEVICE_OFLAG_NONBLOCKING) {
|
|
/* enable interrupt */
|
|
rt_hw_interrupt_enable(level);
|
|
// serial->ops->enable_interrupt(serial);
|
|
break;
|
|
}
|
|
|
|
if ((len == 0) && // blocking io mode
|
|
(serial->parent.open_flag & RT_DEVICE_OFLAG_NONBLOCKING) != RT_DEVICE_OFLAG_NONBLOCKING) {
|
|
rt_err_t ret;
|
|
/* enable interrupt */
|
|
rt_hw_interrupt_enable(level);
|
|
// serial->ops->enable_interrupt(serial);
|
|
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
ret = rt_completion_wait(&(serial->completion_tx), RT_WAITING_FOREVER);
|
|
#else
|
|
ret = rt_event_recv(serial->tx_done, RT_SERIAL_EVENT_TXDONE, RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR, RT_WAITING_FOREVER, RT_NULL);
|
|
#endif
|
|
if (ret == RT_EOK || ret == -RT_ETIMEOUT) {
|
|
continue;
|
|
} else {
|
|
return size;
|
|
}
|
|
}
|
|
|
|
if (len > length_t) {
|
|
len = length_t;
|
|
}
|
|
/* copy to software FIFO */
|
|
while (len > 0) {
|
|
/*
|
|
* to be polite with serial console add a line feed
|
|
* to the carriage return character
|
|
*/
|
|
if (*data == '\n' &&
|
|
(serial->parent.open_flag & RT_DEVICE_FLAG_STREAM) == RT_DEVICE_FLAG_STREAM &&
|
|
last_char != '\r') {
|
|
_serial_fifo_push_data(tx_fifo, '\r');
|
|
|
|
last_char = '\r';
|
|
if (len == 1) {
|
|
break;
|
|
} else {
|
|
len--;
|
|
}
|
|
} else if (*data == '\r') {
|
|
last_char = '\r';
|
|
} else {
|
|
last_char = 0;
|
|
}
|
|
|
|
_serial_fifo_push_data(tx_fifo, *data);
|
|
|
|
data++; len--; size++;
|
|
}
|
|
|
|
/* if the next position is read index, discard this 'read char' */
|
|
if (tx_fifo->put_index == tx_fifo->get_index) {
|
|
tx_fifo->is_full = RT_TRUE;
|
|
}
|
|
|
|
/* enable interrupt */
|
|
rt_hw_interrupt_enable(level);
|
|
// serial->ops->enable_interrupt(serial);
|
|
|
|
// TODO: start tx
|
|
/* disable interrupt */
|
|
level = rt_hw_interrupt_disable();
|
|
// serial->ops->disable_interrupt(serial);
|
|
if (serial->ops->is_dma_txing(serial) == RT_FALSE) {
|
|
/* calucate fifo data size */
|
|
len = _serial_fifo_calc_data_len(tx_fifo);
|
|
|
|
if (len > RT_SERIAL_DMA_BUFSZ) {
|
|
len = RT_SERIAL_DMA_BUFSZ;
|
|
}
|
|
/* read from software FIFO */
|
|
for (i = 0; i < len; i++) {
|
|
/* pop one byte data */
|
|
ch = _serial_fifo_pop_data(tx_fifo);
|
|
|
|
serial->serial_dma_tx[i] = ch;
|
|
}
|
|
tx_fifo->is_full = RT_FALSE;
|
|
serial->ops->start_dma_tx(serial, serial->serial_dma_tx, len);
|
|
|
|
}
|
|
/* enable interrupt */
|
|
rt_hw_interrupt_enable(level);
|
|
// serial->ops->enable_interrupt(serial);
|
|
} while(size < length);
|
|
|
|
return size;
|
|
}
|
|
#endif /* RT_SERIAL_USING_DMA */
|
|
|
|
/* RT-Thread Device Interface */
|
|
/*
|
|
* This function initializes serial device.
|
|
*/
|
|
static rt_err_t rt_serial_init(struct rt_device *dev)
|
|
{
|
|
rt_err_t result = RT_EOK;
|
|
struct rt_serial_device *serial;
|
|
|
|
RT_ASSERT(dev != RT_NULL);
|
|
serial = (struct rt_serial_device *)dev;
|
|
|
|
/* initialize rx/tx */
|
|
serial->serial_rx = RT_NULL;
|
|
serial->serial_tx = RT_NULL;
|
|
|
|
/* initialize hardware */
|
|
if (serial->ops->init)
|
|
result = serial->ops->init(serial);
|
|
|
|
return result;
|
|
}
|
|
|
|
static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
|
|
{
|
|
rt_uint16_t stream_flag = 0;
|
|
struct rt_serial_device *serial;
|
|
|
|
RT_ASSERT(dev != RT_NULL);
|
|
serial = (struct rt_serial_device *)dev;
|
|
|
|
LOG_D("open serial device: 0x%08x with open flag: 0x%04x",
|
|
dev, oflag);
|
|
/* check device flag with the open flag */
|
|
if ((oflag & RT_DEVICE_FLAG_DMA_RX) && !(dev->flag & RT_DEVICE_FLAG_DMA_RX))
|
|
return -RT_EIO;
|
|
if ((oflag & RT_DEVICE_FLAG_DMA_TX) && !(dev->flag & RT_DEVICE_FLAG_DMA_TX))
|
|
return -RT_EIO;
|
|
if ((oflag & RT_DEVICE_FLAG_INT_RX) && !(dev->flag & RT_DEVICE_FLAG_INT_RX))
|
|
return -RT_EIO;
|
|
if ((oflag & RT_DEVICE_FLAG_INT_TX) && !(dev->flag & RT_DEVICE_FLAG_INT_TX))
|
|
return -RT_EIO;
|
|
|
|
/* keep steam flag */
|
|
if ((oflag & RT_DEVICE_FLAG_STREAM) || (dev->open_flag & RT_DEVICE_FLAG_STREAM))
|
|
stream_flag = RT_DEVICE_FLAG_STREAM;
|
|
|
|
/* get open flags */
|
|
dev->open_flag = oflag & 0xff;
|
|
|
|
if (oflag & RT_DEVICE_FLAG_INT_RX)
|
|
{
|
|
/* initialize the Rx/Tx structure according to open flag */
|
|
if (serial->serial_rx == RT_NULL)
|
|
{
|
|
struct rt_serial_fifo* rx_fifo;
|
|
|
|
rx_fifo = (struct rt_serial_fifo*)rt_malloc(sizeof(struct rt_serial_fifo) +
|
|
serial->bufsz);
|
|
RT_ASSERT(rx_fifo != RT_NULL);
|
|
rx_fifo->buf_sz = serial->bufsz;
|
|
rx_fifo->buffer = (rt_uint8_t*) (rx_fifo + 1);
|
|
rt_memset(rx_fifo->buffer, 0, rx_fifo->buf_sz);
|
|
rx_fifo->put_index = 0;
|
|
rx_fifo->get_index = 0;
|
|
rx_fifo->is_full = RT_FALSE;
|
|
|
|
serial->serial_rx = rx_fifo;
|
|
}
|
|
dev->open_flag |= RT_DEVICE_FLAG_INT_RX;
|
|
|
|
serial->_cb_rx = _serial_fifo_rx;
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
rt_completion_init(&(serial->completion_rx));
|
|
#else
|
|
serial->rx_done = rt_event_create("rx_done", RT_IPC_FLAG_PRIO);
|
|
#endif
|
|
/* configure low level device */
|
|
serial->ops->control(serial, RT_DEVICE_CTRL_SET_INT, (void *)RT_DEVICE_FLAG_INT_RX);
|
|
}
|
|
#ifdef RT_SERIAL_USING_DMA
|
|
else if (oflag & RT_DEVICE_FLAG_DMA_RX)
|
|
{
|
|
/* initialize the Rx/Tx structure according to open flag */
|
|
if (serial->serial_rx == RT_NULL)
|
|
{
|
|
struct rt_serial_fifo* rx_fifo;
|
|
|
|
rx_fifo = (struct rt_serial_fifo*)rt_malloc(sizeof(struct rt_serial_fifo) +
|
|
serial->bufsz);
|
|
RT_ASSERT(rx_fifo != RT_NULL);
|
|
rx_fifo->buf_sz = serial->bufsz;
|
|
rx_fifo->buffer = (rt_uint8_t*) (rx_fifo + 1);
|
|
rt_memset(rx_fifo->buffer, 0, rx_fifo->buf_sz);
|
|
rx_fifo->put_index = 0;
|
|
rx_fifo->get_index = 0;
|
|
rx_fifo->is_full = RT_FALSE;
|
|
|
|
serial->serial_rx = rx_fifo;
|
|
}
|
|
dev->open_flag |= RT_DEVICE_FLAG_DMA_RX;
|
|
|
|
serial->dma_idx_rx = 0;
|
|
serial->_cb_rx = _serial_fifo_rx;
|
|
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
rt_completion_init(&(serial->completion_rx));
|
|
#else
|
|
serial->rx_done = rt_event_create("rx_done", RT_IPC_FLAG_PRIO);
|
|
#endif
|
|
/* configure fifo address and length to low level device */
|
|
serial->ops->control(serial, RT_DEVICE_CTRL_CONFIG, (void *) RT_DEVICE_FLAG_DMA_RX);
|
|
}
|
|
#endif /* RT_SERIAL_USING_DMA */
|
|
else
|
|
{
|
|
serial->serial_rx = RT_NULL;
|
|
serial->_cb_rx = _serial_poll_rx;
|
|
}
|
|
|
|
if (oflag & RT_DEVICE_FLAG_INT_TX)
|
|
{
|
|
if (serial->serial_tx == RT_NULL)
|
|
{
|
|
struct rt_serial_fifo *tx_fifo;
|
|
|
|
tx_fifo = (struct rt_serial_fifo*)rt_malloc(sizeof(struct rt_serial_fifo) +
|
|
serial->bufsz);
|
|
RT_ASSERT(tx_fifo != RT_NULL);
|
|
tx_fifo->buf_sz = serial->bufsz;
|
|
tx_fifo->buffer = (rt_uint8_t*) (tx_fifo + 1);
|
|
rt_memset(tx_fifo->buffer, 0, tx_fifo->buf_sz);
|
|
tx_fifo->put_index = 0;
|
|
tx_fifo->get_index = 0;
|
|
tx_fifo->is_full = RT_FALSE;
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
rt_completion_init(&(serial->completion_tx));
|
|
#else
|
|
serial->tx_done = rt_event_create("tx_done", RT_IPC_FLAG_PRIO);
|
|
#endif
|
|
serial->serial_tx = tx_fifo;
|
|
}
|
|
dev->open_flag |= RT_DEVICE_FLAG_INT_TX;
|
|
/* configure low level device */
|
|
// serial->ops->control(serial, RT_DEVICE_CTRL_SET_INT, (void *)RT_DEVICE_FLAG_INT_TX);
|
|
|
|
serial->_cb_tx = _serial_int_tx;
|
|
}
|
|
#ifdef RT_SERIAL_USING_DMA
|
|
else if (oflag & RT_DEVICE_FLAG_DMA_TX)
|
|
{
|
|
if (serial->serial_tx == RT_NULL)
|
|
{
|
|
struct rt_serial_fifo *tx_fifo;
|
|
|
|
tx_fifo = (struct rt_serial_fifo*)rt_malloc(sizeof(struct rt_serial_fifo) +
|
|
serial->bufsz);
|
|
RT_ASSERT(tx_fifo != RT_NULL);
|
|
tx_fifo->buf_sz = serial->bufsz;
|
|
tx_fifo->buffer = (rt_uint8_t*) (tx_fifo + 1);
|
|
rt_memset(tx_fifo->buffer, 0, tx_fifo->buf_sz);
|
|
tx_fifo->put_index = 0;
|
|
tx_fifo->get_index = 0;
|
|
tx_fifo->is_full = RT_FALSE;
|
|
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
rt_completion_init(&(serial->completion_tx));
|
|
#else
|
|
serial->tx_done = rt_event_create("tx_done", RT_IPC_FLAG_PRIO);
|
|
#endif
|
|
|
|
serial->serial_tx = tx_fifo;
|
|
}
|
|
dev->open_flag |= RT_DEVICE_FLAG_DMA_TX;
|
|
|
|
serial->_cb_tx = _serial_dma_tx;
|
|
/* configure low level device */
|
|
serial->ops->control(serial, RT_DEVICE_CTRL_CONFIG, (void *)RT_DEVICE_FLAG_DMA_TX);
|
|
}
|
|
#endif /* RT_SERIAL_USING_DMA */
|
|
else
|
|
{
|
|
serial->serial_tx = RT_NULL;
|
|
serial->_cb_tx = _serial_poll_tx;
|
|
}
|
|
|
|
serial->ops->control(serial, RT_DEVICE_CTRL_OPEN, (void *)0);
|
|
|
|
/* set stream flag */
|
|
dev->open_flag |= stream_flag;
|
|
|
|
return RT_EOK;
|
|
}
|
|
|
|
static rt_err_t rt_serial_close(struct rt_device *dev)
|
|
{
|
|
struct rt_serial_device *serial;
|
|
|
|
RT_ASSERT(dev != RT_NULL);
|
|
serial = (struct rt_serial_device *)dev;
|
|
|
|
serial->ops->control(serial, RT_DEVICE_CTRL_CLOSE, RT_NULL);
|
|
|
|
if (dev->open_flag & RT_DEVICE_FLAG_INT_RX)
|
|
{
|
|
struct rt_serial_fifo *rx_fifo;
|
|
|
|
/* configure low level device */
|
|
serial->ops->control(serial, RT_DEVICE_CTRL_CLR_INT, (void *)RT_DEVICE_FLAG_INT_RX);
|
|
|
|
dev->open_flag &= ~RT_DEVICE_FLAG_INT_RX;
|
|
|
|
rx_fifo = (struct rt_serial_fifo *)serial->serial_rx;
|
|
rt_free(rx_fifo);
|
|
|
|
serial->serial_rx = RT_NULL;
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
rt_completion_init(&(serial->completion_rx));
|
|
#else
|
|
rt_event_delete(serial->rx_done);
|
|
#endif
|
|
}
|
|
#ifdef RT_SERIAL_USING_DMA
|
|
else if (dev->open_flag & RT_DEVICE_FLAG_DMA_RX)
|
|
{
|
|
struct rt_serial_fifo *rx_fifo;
|
|
|
|
/* configure low level device */
|
|
serial->ops->control(serial, RT_DEVICE_CTRL_CLR_INT, (void *) RT_DEVICE_FLAG_DMA_RX);
|
|
|
|
dev->open_flag &= ~RT_DEVICE_FLAG_DMA_RX;
|
|
|
|
rx_fifo = (struct rt_serial_fifo *)serial->serial_rx;
|
|
rt_free(rx_fifo);
|
|
|
|
serial->serial_rx = RT_NULL;
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
rt_completion_init(&(serial->completion_rx));
|
|
#else
|
|
rt_event_delete(serial->rx_done);
|
|
#endif
|
|
}
|
|
#endif /* RT_SERIAL_USING_DMA */
|
|
|
|
if (dev->open_flag & RT_DEVICE_FLAG_INT_TX)
|
|
{
|
|
struct rt_serial_fifo *tx_fifo;
|
|
|
|
/* configure low level device */
|
|
serial->ops->control(serial, RT_DEVICE_CTRL_CLR_INT, (void *)RT_DEVICE_FLAG_INT_TX);
|
|
|
|
dev->open_flag &= ~RT_DEVICE_FLAG_INT_TX;
|
|
|
|
tx_fifo = (struct rt_serial_fifo *)serial->serial_tx;
|
|
rt_free(tx_fifo);
|
|
|
|
serial->serial_tx = RT_NULL;
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
rt_completion_init(&(serial->completion_tx));
|
|
#else
|
|
rt_event_delete(serial->tx_done);
|
|
#endif
|
|
}
|
|
#ifdef RT_SERIAL_USING_DMA
|
|
else if (dev->open_flag & RT_DEVICE_FLAG_DMA_TX)
|
|
{
|
|
struct rt_serial_fifo *tx_fifo;
|
|
|
|
/* configure low level device */
|
|
serial->ops->control(serial, RT_DEVICE_CTRL_CLR_INT, (void *) RT_DEVICE_FLAG_DMA_TX);
|
|
|
|
dev->open_flag &= ~RT_DEVICE_FLAG_DMA_TX;
|
|
|
|
tx_fifo = (struct rt_serial_fifo *)serial->serial_tx;
|
|
rt_free(tx_fifo);
|
|
|
|
serial->serial_tx = RT_NULL;
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
rt_completion_init(&(serial->completion_tx));
|
|
#else
|
|
rt_event_delete(serial->tx_done);
|
|
#endif
|
|
}
|
|
#endif /* RT_SERIAL_USING_DMA */
|
|
|
|
dev->flag &= ~RT_DEVICE_FLAG_ACTIVATED;
|
|
|
|
return RT_EOK;
|
|
}
|
|
|
|
static rt_ssize_t rt_serial_read(struct rt_device *dev,
|
|
rt_off_t pos,
|
|
void *buffer,
|
|
rt_size_t size)
|
|
{
|
|
struct rt_serial_device *serial;
|
|
|
|
RT_ASSERT(dev != RT_NULL);
|
|
if (size == 0) return 0;
|
|
|
|
serial = (struct rt_serial_device *)dev;
|
|
|
|
return serial->_cb_rx(serial, (rt_uint8_t *)buffer, size);
|
|
}
|
|
|
|
static rt_ssize_t rt_serial_write(struct rt_device *dev,
|
|
rt_off_t pos,
|
|
const void *buffer,
|
|
rt_size_t size)
|
|
{
|
|
struct rt_serial_device *serial;
|
|
|
|
RT_ASSERT(dev != RT_NULL);
|
|
if (size == 0) return 0;
|
|
|
|
serial = (struct rt_serial_device *)dev;
|
|
|
|
return serial->_cb_tx(serial, (const rt_uint8_t *)buffer, size);
|
|
}
|
|
|
|
static rt_err_t rt_serial_flush(struct rt_device *dev)
|
|
{
|
|
struct rt_serial_device *serial;
|
|
rt_size_t len;
|
|
struct rt_serial_fifo *tx_fifo, *rx_fifo;
|
|
rt_base_t level;
|
|
|
|
RT_ASSERT(dev != RT_NULL);
|
|
|
|
serial = (struct rt_serial_device *)dev;
|
|
|
|
if((dev->open_flag & RT_DEVICE_FLAG_INT_RX)
|
|
#ifdef RT_SERIAL_USING_DMA
|
|
|| (dev->open_flag & RT_DEVICE_FLAG_DMA_RX)
|
|
#endif /* RT_SERIAL_USING_DMA */
|
|
) {
|
|
rx_fifo = (struct rt_serial_fifo*) serial->serial_rx;
|
|
level = rt_hw_interrupt_disable();
|
|
rx_fifo->get_index = rx_fifo->put_index = 0;
|
|
rx_fifo->is_full = RT_FALSE;
|
|
rt_hw_interrupt_enable(level);
|
|
}
|
|
|
|
if ((dev->open_flag & RT_DEVICE_FLAG_INT_TX)
|
|
#ifdef RT_SERIAL_USING_DMA
|
|
|| (dev->open_flag & RT_DEVICE_FLAG_DMA_TX)
|
|
#endif /* RT_SERIAL_USING_DMA */
|
|
) {
|
|
tx_fifo = (struct rt_serial_fifo*) serial->serial_tx;
|
|
|
|
while(1) {
|
|
/* disable interrupt */
|
|
level = rt_hw_interrupt_disable();
|
|
// serial->ops->disable_interrupt(serial);
|
|
|
|
len = _serial_fifo_calc_data_len(tx_fifo);
|
|
|
|
if (len == 0) {
|
|
/* enable interrupt */
|
|
rt_hw_interrupt_enable(level);
|
|
// serial->ops->enable_interrupt(serial);
|
|
break;
|
|
} else {
|
|
/* enable interrupt */
|
|
rt_hw_interrupt_enable(level);
|
|
// serial->ops->enable_interrupt(serial);
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
rt_completion_wait(&(serial->completion_tx), RT_WAITING_FOREVER);
|
|
#else
|
|
rt_event_recv(serial->tx_done, RT_SERIAL_EVENT_TXDONE, RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR, RT_WAITING_FOREVER, RT_NULL);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if (dev->open_flag & RT_DEVICE_FLAG_INT_TX) {
|
|
serial->ops->flush(serial);
|
|
}
|
|
#ifdef RT_SERIAL_USING_DMA
|
|
else if (dev->open_flag & RT_DEVICE_FLAG_DMA_TX) {
|
|
while (serial->ops->is_dma_txing(serial) == RT_TRUE);
|
|
}
|
|
#endif /* RT_SERIAL_USING_DMA */
|
|
} else {
|
|
serial->ops->flush(serial);
|
|
}
|
|
|
|
return RT_EOK;
|
|
}
|
|
|
|
#ifdef RT_USING_POSIX_TERMIOS
|
|
struct speed_baudrate_item
|
|
{
|
|
speed_t speed;
|
|
int baudrate;
|
|
};
|
|
|
|
const static struct speed_baudrate_item _tbl[] =
|
|
{
|
|
{B2400, BAUD_RATE_2400},
|
|
{B4800, BAUD_RATE_4800},
|
|
{B9600, BAUD_RATE_9600},
|
|
{B19200, BAUD_RATE_19200},
|
|
{B38400, BAUD_RATE_38400},
|
|
{B57600, BAUD_RATE_57600},
|
|
{B115200, BAUD_RATE_115200},
|
|
{B230400, BAUD_RATE_230400},
|
|
{B460800, BAUD_RATE_460800},
|
|
{B921600, BAUD_RATE_921600},
|
|
{B2000000, BAUD_RATE_2000000},
|
|
{B3000000, BAUD_RATE_3000000},
|
|
};
|
|
|
|
static speed_t _get_speed(int baudrate)
|
|
{
|
|
int index;
|
|
|
|
for (index = 0; index < sizeof(_tbl)/sizeof(_tbl[0]); index ++)
|
|
{
|
|
if (_tbl[index].baudrate == baudrate)
|
|
return _tbl[index].speed;
|
|
}
|
|
|
|
return B0;
|
|
}
|
|
|
|
static int _get_baudrate(speed_t speed)
|
|
{
|
|
int index;
|
|
|
|
for (index = 0; index < sizeof(_tbl)/sizeof(_tbl[0]); index ++)
|
|
{
|
|
if (_tbl[index].speed == speed)
|
|
return _tbl[index].baudrate;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void _tc_flush(struct rt_serial_device *serial, int queue)
|
|
{
|
|
rt_base_t level;
|
|
int ch = -1;
|
|
struct rt_serial_fifo *rx_fifo = RT_NULL;
|
|
struct rt_device *device = RT_NULL;
|
|
|
|
RT_ASSERT(serial != RT_NULL);
|
|
|
|
device = &(serial->parent);
|
|
rx_fifo = (struct rt_serial_fifo *) serial->serial_rx;
|
|
|
|
switch(queue)
|
|
{
|
|
case TCIFLUSH:
|
|
case TCIOFLUSH:
|
|
|
|
RT_ASSERT(rx_fifo != RT_NULL);
|
|
|
|
if((device->open_flag & RT_DEVICE_FLAG_INT_RX) || (device->open_flag & RT_DEVICE_FLAG_DMA_RX))
|
|
{
|
|
RT_ASSERT(RT_NULL != rx_fifo);
|
|
level = rt_hw_interrupt_disable();
|
|
rx_fifo->get_index = rx_fifo->put_index;
|
|
rx_fifo->is_full = RT_FALSE;
|
|
rt_hw_interrupt_enable(level);
|
|
}
|
|
else
|
|
{
|
|
while (1)
|
|
{
|
|
ch = serial->ops->getc(serial);
|
|
if (ch == -1) break;
|
|
}
|
|
}
|
|
|
|
break;
|
|
|
|
case TCOFLUSH:
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
static rt_err_t rt_serial_control(struct rt_device *dev,
|
|
int cmd,
|
|
void *args)
|
|
{
|
|
rt_err_t ret = RT_EOK;
|
|
struct rt_serial_device *serial;
|
|
|
|
RT_ASSERT(dev != RT_NULL);
|
|
serial = (struct rt_serial_device *)dev;
|
|
|
|
switch (cmd)
|
|
{
|
|
case RT_DEVICE_CTRL_SUSPEND:
|
|
/* suspend device */
|
|
dev->flag |= RT_DEVICE_FLAG_SUSPENDED;
|
|
break;
|
|
case RT_DEVICE_CTRL_RESUME:
|
|
/* resume device */
|
|
dev->flag &= ~RT_DEVICE_FLAG_SUSPENDED;
|
|
break;
|
|
case RT_DEVICE_CTRL_BLOCKING:
|
|
if (((rt_uint32_t)args & RT_DEVICE_OFLAG_NONBLOCKING) == RT_DEVICE_OFLAG_NONBLOCKING) {
|
|
dev->open_flag |= RT_DEVICE_OFLAG_NONBLOCKING;
|
|
} else {
|
|
dev->open_flag &= ~RT_DEVICE_OFLAG_NONBLOCKING;
|
|
}
|
|
break;
|
|
case RT_DEVICE_CTRL_CONFIG:
|
|
if (args)
|
|
{
|
|
struct serial_configure *pconfig = (struct serial_configure *) args;
|
|
|
|
/* serial device has been opened, to configure it */
|
|
ret = serial->ops->configure(serial, pconfig);
|
|
if (ret == RT_EOK) {
|
|
/* set serial configure */
|
|
serial->config = *pconfig;
|
|
}
|
|
}
|
|
break;
|
|
#ifdef RT_USING_POSIX_STDIO
|
|
#ifdef RT_USING_POSIX_TERMIOS
|
|
case TCGETA:
|
|
{
|
|
struct termios *tio = (struct termios*)args;
|
|
if (tio == RT_NULL) return -RT_EINVAL;
|
|
|
|
tio->c_iflag = 0;
|
|
tio->c_oflag = 0;
|
|
tio->c_lflag = 0;
|
|
|
|
/* update oflag for console device */
|
|
if (rt_console_get_device() == dev)
|
|
tio->c_oflag = OPOST | ONLCR;
|
|
|
|
/* set cflag */
|
|
tio->c_cflag = 0;
|
|
if (serial->config.data_bits == DATA_BITS_5)
|
|
tio->c_cflag = CS5;
|
|
else if (serial->config.data_bits == DATA_BITS_6)
|
|
tio->c_cflag = CS6;
|
|
else if (serial->config.data_bits == DATA_BITS_7)
|
|
tio->c_cflag = CS7;
|
|
else if (serial->config.data_bits == DATA_BITS_8)
|
|
tio->c_cflag = CS8;
|
|
|
|
if (serial->config.stop_bits == STOP_BITS_2)
|
|
tio->c_cflag |= CSTOPB;
|
|
|
|
if (serial->config.parity == PARITY_EVEN)
|
|
tio->c_cflag |= PARENB;
|
|
else if (serial->config.parity == PARITY_ODD)
|
|
tio->c_cflag |= (PARODD | PARENB);
|
|
|
|
cfsetospeed(tio, _get_speed(serial->config.baud_rate));
|
|
}
|
|
break;
|
|
|
|
case TCSETAW:
|
|
case TCSETAF:
|
|
case TCSETA:
|
|
{
|
|
int baudrate;
|
|
struct serial_configure config;
|
|
|
|
struct termios *tio = (struct termios*)args;
|
|
if (tio == RT_NULL) return -RT_EINVAL;
|
|
|
|
config = serial->config;
|
|
|
|
baudrate = _get_baudrate(cfgetospeed(tio));
|
|
config.baud_rate = baudrate;
|
|
|
|
switch (tio->c_cflag & CSIZE)
|
|
{
|
|
case CS5:
|
|
config.data_bits = DATA_BITS_5;
|
|
break;
|
|
case CS6:
|
|
config.data_bits = DATA_BITS_6;
|
|
break;
|
|
case CS7:
|
|
config.data_bits = DATA_BITS_7;
|
|
break;
|
|
default:
|
|
config.data_bits = DATA_BITS_8;
|
|
break;
|
|
}
|
|
|
|
if (tio->c_cflag & CSTOPB) config.stop_bits = STOP_BITS_2;
|
|
else config.stop_bits = STOP_BITS_1;
|
|
|
|
if (tio->c_cflag & PARENB)
|
|
{
|
|
if (tio->c_cflag & PARODD) config.parity = PARITY_ODD;
|
|
else config.parity = PARITY_EVEN;
|
|
}
|
|
else config.parity = PARITY_NONE;
|
|
|
|
serial->ops->configure(serial, &config);
|
|
}
|
|
break;
|
|
case TCFLSH:
|
|
{
|
|
int queue = (int)args;
|
|
|
|
_tc_flush(serial, queue);
|
|
}
|
|
|
|
break;
|
|
case TCXONC:
|
|
break;
|
|
#endif /*RT_USING_POSIX_TERMIOS*/
|
|
case TIOCSWINSZ:
|
|
{
|
|
struct winsize* p_winsize;
|
|
|
|
p_winsize = (struct winsize*)args;
|
|
rt_kprintf("\x1b[8;%d;%dt", p_winsize->ws_col, p_winsize->ws_row);
|
|
}
|
|
break;
|
|
case TIOCGWINSZ:
|
|
{
|
|
struct winsize* p_winsize;
|
|
p_winsize = (struct winsize*)args;
|
|
|
|
if(rt_thread_self() != rt_thread_find("tshell"))
|
|
{
|
|
/* only can be used in tshell thread; otherwise, return default size */
|
|
p_winsize->ws_col = 80;
|
|
p_winsize->ws_row = 24;
|
|
}
|
|
else
|
|
{
|
|
#define _TIO_BUFLEN 20
|
|
char _tio_buf[_TIO_BUFLEN];
|
|
unsigned char cnt1, cnt2, cnt3, i;
|
|
char row_s[4], col_s[4];
|
|
char *p;
|
|
|
|
rt_memset(_tio_buf, 0, _TIO_BUFLEN);
|
|
|
|
/* send the command to terminal for getting the window size of the terminal */
|
|
rt_kprintf("\033[18t");
|
|
|
|
/* waiting for the response from the terminal */
|
|
i = 0;
|
|
while(i < _TIO_BUFLEN)
|
|
{
|
|
_tio_buf[i] = getchar();
|
|
if(_tio_buf[i] != 't')
|
|
{
|
|
i ++;
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
if(i == _TIO_BUFLEN)
|
|
{
|
|
/* buffer overloaded, and return default size */
|
|
p_winsize->ws_col = 80;
|
|
p_winsize->ws_row = 24;
|
|
break;
|
|
}
|
|
|
|
/* interpreting data eg: "\033[8;1;15t" which means row is 1 and col is 15 (unit: size of ONE character) */
|
|
rt_memset(row_s,0,4);
|
|
rt_memset(col_s,0,4);
|
|
cnt1 = 0;
|
|
while(_tio_buf[cnt1] != ';' && cnt1 < _TIO_BUFLEN)
|
|
{
|
|
cnt1++;
|
|
}
|
|
cnt2 = ++cnt1;
|
|
while(_tio_buf[cnt2] != ';' && cnt2 < _TIO_BUFLEN)
|
|
{
|
|
cnt2++;
|
|
}
|
|
p = row_s;
|
|
while(cnt1 < cnt2)
|
|
{
|
|
*p++ = _tio_buf[cnt1++];
|
|
}
|
|
p = col_s;
|
|
cnt2++;
|
|
cnt3 = rt_strlen(_tio_buf) - 1;
|
|
while(cnt2 < cnt3)
|
|
{
|
|
*p++ = _tio_buf[cnt2++];
|
|
}
|
|
|
|
/* load the window size date */
|
|
p_winsize->ws_col = atoi(col_s);
|
|
p_winsize->ws_row = atoi(row_s);
|
|
#undef _TIO_BUFLEN
|
|
}
|
|
|
|
p_winsize->ws_xpixel = 0;/* unused */
|
|
p_winsize->ws_ypixel = 0;/* unused */
|
|
}
|
|
break;
|
|
case FIONREAD:
|
|
{
|
|
rt_size_t recved = 0;
|
|
rt_base_t level;
|
|
|
|
level = rt_hw_interrupt_disable();
|
|
recved = _serial_fifo_calc_data_len(serial->serial_rx);
|
|
rt_hw_interrupt_enable(level);
|
|
|
|
*(rt_size_t *)args = recved;
|
|
}
|
|
break;
|
|
#endif /*RT_USING_POSIX_STDIO*/
|
|
default :
|
|
/* control device */
|
|
ret = serial->ops->control(serial, cmd, args);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
#ifdef RT_USING_DEVICE_OPS
|
|
const static struct rt_device_ops serial_ops =
|
|
{
|
|
.init = rt_serial_init,
|
|
.open = rt_serial_open,
|
|
.close = rt_serial_close,
|
|
.read = rt_serial_read,
|
|
.write = rt_serial_write,
|
|
.flush = rt_serial_flush,
|
|
.control = rt_serial_control
|
|
};
|
|
#endif
|
|
|
|
/*
|
|
* serial register
|
|
*/
|
|
rt_err_t rt_hw_serial_register(struct rt_serial_device *serial,
|
|
const char *name,
|
|
rt_uint32_t flag,
|
|
void *data)
|
|
{
|
|
rt_err_t ret;
|
|
struct rt_device *device;
|
|
RT_ASSERT(serial != RT_NULL);
|
|
|
|
serial->config = RT_SERIAL_CONFIG_DEFAULT;
|
|
serial->bufsz = RT_SERIAL_FIFO_BUFSZ;
|
|
|
|
device = &(serial->parent);
|
|
|
|
device->type = RT_Device_Class_Char;
|
|
device->rx_indicate = RT_NULL;
|
|
device->tx_complete = RT_NULL;
|
|
|
|
#ifdef RT_USING_DEVICE_OPS
|
|
device->ops = &serial_ops;
|
|
#else
|
|
device->init = rt_serial_init;
|
|
device->open = rt_serial_open;
|
|
device->close = rt_serial_close;
|
|
device->read = rt_serial_read;
|
|
device->write = rt_serial_write;
|
|
device->flush = rt_serial_flush;
|
|
device->control = rt_serial_control;
|
|
#endif
|
|
device->user_data = data;
|
|
|
|
/* register a character device */
|
|
ret = rt_device_register(device, name, flag);
|
|
|
|
#if defined(RT_USING_POSIX_STDIO)
|
|
/* set fops */
|
|
device->fops = &_serial_fops;
|
|
#endif
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* ISR for serial interrupt */
|
|
void rt_hw_serial_isr(struct rt_serial_device *serial, int event)
|
|
{
|
|
switch (event & 0xff)
|
|
{
|
|
case RT_SERIAL_EVENT_RX_IND:
|
|
{
|
|
int ch = -1;
|
|
struct rt_serial_fifo* rx_fifo;
|
|
|
|
/* interrupt mode receive */
|
|
rx_fifo = (struct rt_serial_fifo*)serial->serial_rx;
|
|
|
|
#if defined(RT_SERIAL_HARD_FIFO)
|
|
while (1)
|
|
#endif
|
|
{
|
|
ch = serial->ops->getc(serial);
|
|
#if defined(RT_SERIAL_HARD_FIFO)
|
|
if (ch == -1) break;
|
|
#endif
|
|
|
|
/* if fifo is full, discard one byte first */
|
|
if (rx_fifo->is_full == RT_TRUE) {
|
|
rx_fifo->get_index += 1;
|
|
if (rx_fifo->get_index >= rx_fifo->buf_sz) rx_fifo->get_index = 0;
|
|
}
|
|
/* push a new data */
|
|
_serial_fifo_push_data(rx_fifo, ch);
|
|
|
|
/* if put index equal to read index, fifo is full */
|
|
if (rx_fifo->put_index == rx_fifo->get_index)
|
|
{
|
|
rx_fifo->is_full = RT_TRUE;
|
|
}
|
|
}
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
rt_completion_done(&(serial->completion_rx));
|
|
#else
|
|
rt_event_send(serial->rx_done, RT_SERIAL_EVENT_RXDONE);
|
|
#endif
|
|
/* invoke callback */
|
|
if (serial->parent.rx_indicate != RT_NULL) {
|
|
rt_size_t rx_length;
|
|
|
|
/* get rx length */
|
|
rx_length = _serial_fifo_calc_data_len(rx_fifo);
|
|
if (rx_length) {
|
|
serial->parent.rx_indicate(&serial->parent, rx_length);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case RT_SERIAL_EVENT_TX_DONE:
|
|
{
|
|
#if defined(RT_SERIAL_HARD_FIFO)
|
|
rt_size_t fifo_sz;
|
|
#endif
|
|
rt_size_t len;
|
|
rt_uint8_t ch = 0;
|
|
struct rt_serial_fifo *tx_fifo;
|
|
|
|
tx_fifo = (struct rt_serial_fifo*) serial->serial_tx;
|
|
|
|
/* calucate fifo data size */
|
|
len = _serial_fifo_calc_data_len(tx_fifo);
|
|
if (len == 0) {
|
|
// TODO: stop tx
|
|
serial->ops->stop_tx(serial);
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
rt_completion_done(&(serial->completion_tx));
|
|
#else
|
|
rt_event_send(serial->tx_done, RT_SERIAL_EVENT_TXDONE);
|
|
#endif
|
|
/* invoke callback */
|
|
if (serial->parent.tx_complete != RT_NULL) {
|
|
serial->parent.tx_complete(&serial->parent, (void*)len);
|
|
}
|
|
break;
|
|
}
|
|
#if defined(RT_SERIAL_HARD_FIFO)
|
|
fifo_sz = event >> 8;
|
|
if (len > fifo_sz) {
|
|
len = fifo_sz;
|
|
}
|
|
/* read from software FIFO */
|
|
while (len > 0) {
|
|
/* pop one byte data */
|
|
ch = _serial_fifo_pop_data(tx_fifo);
|
|
|
|
serial->ops->putc(serial, ch);
|
|
len--;
|
|
}
|
|
#else
|
|
/* pop one byte data */
|
|
ch = _serial_fifo_pop_data(tx_fifo);
|
|
|
|
serial->ops->putc(serial, ch);
|
|
#endif
|
|
tx_fifo->is_full = RT_FALSE;
|
|
}
|
|
break;
|
|
#ifdef RT_SERIAL_USING_DMA
|
|
case RT_SERIAL_EVENT_RX_DMADONE:
|
|
{
|
|
int dma_idx, ch = -1;
|
|
struct rt_serial_fifo* rx_fifo;
|
|
|
|
dma_idx = event >> 8;
|
|
|
|
if (serial->dma_idx_rx == dma_idx) break;
|
|
|
|
rx_fifo = (struct rt_serial_fifo*)serial->serial_rx;
|
|
|
|
while (serial->dma_idx_rx != dma_idx) {
|
|
ch = serial->serial_dma_rx[serial->dma_idx_rx];
|
|
|
|
/* if fifo is full, discard one byte first */
|
|
if (rx_fifo->is_full == RT_TRUE) {
|
|
rx_fifo->get_index += 1;
|
|
if (rx_fifo->get_index >= rx_fifo->buf_sz) rx_fifo->get_index = 0;
|
|
}
|
|
/* push a new data */
|
|
_serial_fifo_push_data(rx_fifo, ch);
|
|
|
|
/* if put index equal to read index, fifo is full */
|
|
if (rx_fifo->put_index == rx_fifo->get_index)
|
|
{
|
|
rx_fifo->is_full = RT_TRUE;
|
|
}
|
|
serial->dma_idx_rx++;
|
|
if (serial->dma_idx_rx == RT_SERIAL_DMA_BUFSZ) {
|
|
serial->dma_idx_rx = 0;
|
|
}
|
|
}
|
|
serial->dma_idx_rx = dma_idx;
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
rt_completion_done(&(serial->completion_rx));
|
|
#else
|
|
rt_event_send(serial->rx_done, RT_SERIAL_EVENT_RXDONE);
|
|
#endif
|
|
|
|
/* invoke callback */
|
|
if (serial->parent.rx_indicate != RT_NULL) {
|
|
rt_size_t rx_length;
|
|
|
|
/* get rx length */
|
|
rx_length = _serial_fifo_calc_data_len(rx_fifo);
|
|
if (rx_length) {
|
|
serial->parent.rx_indicate(&serial->parent, rx_length);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case RT_SERIAL_EVENT_TX_DMADONE:
|
|
{
|
|
int i;
|
|
rt_size_t len;
|
|
rt_uint8_t ch = 0;
|
|
struct rt_serial_fifo *tx_fifo;
|
|
|
|
tx_fifo = (struct rt_serial_fifo*) serial->serial_tx;
|
|
|
|
/* calucate fifo data size */
|
|
len = _serial_fifo_calc_data_len(tx_fifo);
|
|
if (len == 0) {
|
|
// TODO: stop tx
|
|
serial->ops->stop_dma_tx(serial);
|
|
#ifndef RT_SERIAL_USE_EVENT
|
|
rt_completion_done(&(serial->completion_tx));
|
|
#else
|
|
rt_event_send(serial->tx_done, RT_SERIAL_EVENT_TXDONE);
|
|
#endif
|
|
/* invoke callback */
|
|
if (serial->parent.tx_complete != RT_NULL) {
|
|
serial->parent.tx_complete(&serial->parent, (void*)len);
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (len > RT_SERIAL_DMA_BUFSZ) {
|
|
len = RT_SERIAL_DMA_BUFSZ;
|
|
}
|
|
/* read from software FIFO */
|
|
for (i = 0; i < len; i++) {
|
|
/* pop one byte data */
|
|
ch = _serial_fifo_pop_data(tx_fifo);
|
|
|
|
serial->serial_dma_tx[i] = ch;
|
|
}
|
|
tx_fifo->is_full = RT_FALSE;
|
|
serial->ops->start_dma_tx(serial, serial->serial_dma_tx, len);
|
|
}
|
|
break;
|
|
#endif /* RT_SERIAL_USING_DMA */
|
|
}
|
|
}
|
|
#endif /* RT_USING_SERIAL */
|