325 lines
7.8 KiB
C
325 lines
7.8 KiB
C
/*
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* Copyright (c) 2018, Synopsys, Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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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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#include <drivers/serial.h>
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#include "rt_board.h"
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#include "arc/arc_timer.h"
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#include "arc/arc_exception.h"
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#include "embARC_error.h"
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static rt_err_t _configure(struct rt_serial_device *serial, struct serial_configure *cfg)
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{
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DEV_UART_PTR uart;
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unsigned int id;
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int ret;
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id = (unsigned int)(serial->parent.user_data);
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uart = uart_get_dev(id);
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ret = uart->uart_control(UART_CMD_SET_BAUD, (void *)(cfg->baud_rate));
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if (ret != E_OK) {
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return -RT_ERROR;
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}
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return RT_EOK;
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}
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static rt_err_t _control(struct rt_serial_device *serial, int cmd, void *arg)
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{
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DEV_UART_PTR uart;
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unsigned int id;
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id = (unsigned int)(serial->parent.user_data);
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uart = uart_get_dev(id);
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switch (cmd) {
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case RT_DEVICE_CTRL_CLR_INT:
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uart->uart_control(UART_CMD_SET_RXINT, (void *)0);
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break;
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case RT_DEVICE_CTRL_SET_INT:
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uart->uart_control(UART_CMD_SET_RXINT, (void *)1);
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break;
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case RT_DEVICE_CTRL_SUSPEND:
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uart->uart_control(UART_CMD_DIS_DEV, (void *)0);
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break;
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case RT_DEVICE_CTRL_RESUME:
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uart->uart_control(UART_CMD_ENA_DEV, (void *)0);
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break;
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default:
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return -RT_ERROR;
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break;
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}
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return RT_EOK;
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}
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static int _putc(struct rt_serial_device *serial, char c)
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{
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DEV_UART_PTR uart;
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unsigned int id;
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int ret;
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id = (unsigned int)(serial->parent.user_data);
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uart = uart_get_dev(id);
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ret = uart->uart_write(&c, 1);
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if (ret < 0) {
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return -1;
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} else {
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return 1;
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}
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}
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static int _getc(struct rt_serial_device *serial)
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{
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DEV_UART_PTR uart;
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unsigned int id;
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unsigned int data;
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int ret;
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int rd_avail = 0;
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id = (unsigned int)(serial->parent.user_data);
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uart = uart_get_dev(id);
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uart->uart_control(UART_CMD_GET_RXAVAIL, (void *)(&rd_avail));
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if (rd_avail > 0) {
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ret = uart->uart_read(&data, 1);
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} else {
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return -1;
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}
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if (ret < 0) {
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return -1;
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} else {
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return data;
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}
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}
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static const struct rt_uart_ops uart_ops =
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{
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_configure,
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_control,
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_putc,
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_getc,
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};
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static struct rt_serial_device uart0;
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static struct rt_serial_device uart1;
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static struct rt_serial_device uart2;
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static struct rt_serial_device uart3;
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static void uart0_isr(void *ptr)
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{
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rt_hw_serial_isr((struct rt_serial_device*)&uart0, RT_SERIAL_EVENT_RX_IND);
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}
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static void uart1_isr(void *ptr)
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{
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rt_hw_serial_isr((struct rt_serial_device*)&uart1, RT_SERIAL_EVENT_RX_IND);
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}
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static void uart2_isr(void *ptr)
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{
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rt_hw_serial_isr((struct rt_serial_device*)&uart2, RT_SERIAL_EVENT_RX_IND);
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}
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static void uart3_isr(void *ptr)
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{
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rt_hw_serial_isr((struct rt_serial_device*)&uart3, RT_SERIAL_EVENT_RX_IND);
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}
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int rt_hw_uart_init(void)
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{
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DEV_UART_PTR uart;
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struct serial_configure config;
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int ret;
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config.baud_rate = BAUD_RATE_115200;
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config.bit_order = BIT_ORDER_LSB;
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config.data_bits = DATA_BITS_8;
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config.parity = PARITY_NONE;
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config.stop_bits = STOP_BITS_1;
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config.invert = NRZ_NORMAL;
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config.bufsz = RT_SERIAL_RB_BUFSZ;
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uart0.ops = &uart_ops;
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uart0.config = config;
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uart1.ops = &uart_ops;
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uart1.config = config;
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uart2.ops = &uart_ops;
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uart2.config = config;
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uart3.ops = &uart_ops;
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uart3.config = config;
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/* uart0 init */
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uart = uart_get_dev(0);
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if (uart != NULL) {
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/* default format: 8bits, no parity, 1 stop bits */
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ret = uart->uart_open(config.baud_rate);
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if (ret != E_OPNED && ret != E_OK) {
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return -RT_ERROR;
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}
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/* enable rx int */
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uart->uart_control(UART_CMD_SET_RXINT, (void *)0);
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/* use customized int isr */
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uart->uart_control(UART_CMD_SET_RXCB, uart0_isr);
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uart->uart_control(UART_CMD_SET_RXINT_BUF, NULL);
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rt_hw_serial_register(&uart0, "uart0",
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
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(void *)0);
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}
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/* uart1 init */
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uart = uart_get_dev(1);
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if (uart != NULL) {
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/* default format: 8bits, no parity, 1 stop bits */
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ret = uart->uart_open(config.baud_rate);
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if (ret != E_OPNED && ret != E_OK) {
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return -RT_ERROR;
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}
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/* enable rx int */
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uart->uart_control(UART_CMD_SET_RXINT, (void *)0);
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/* use customized int isr */
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uart->uart_control(UART_CMD_SET_RXCB, uart1_isr);
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uart->uart_control(UART_CMD_SET_RXINT_BUF, NULL);
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rt_hw_serial_register(&uart1, "uart1",
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
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(void *)1);
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}
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/* uart2 init */
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uart = uart_get_dev(2);
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if (uart != NULL) {
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/* default format: 8bits, no parity, 1 stop bits */
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ret = uart->uart_open(config.baud_rate);
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if (ret != E_OPNED && ret != E_OK) {
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return -RT_ERROR;
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}
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/* enable rx int */
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uart->uart_control(UART_CMD_SET_RXINT, (void *)0);
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/* use customized int isr */
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uart->uart_control(UART_CMD_SET_RXCB, uart2_isr);
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uart->uart_control(UART_CMD_SET_RXINT_BUF, NULL);
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rt_hw_serial_register(&uart2, "uart2",
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
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(void *)2);
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}
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/* uart3 init */
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uart = uart_get_dev(3);
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if (uart != NULL) {
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/* default format: 8bits, no parity, 1 stop bits */
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ret = uart->uart_open(config.baud_rate);
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if (ret != E_OPNED && ret != E_OK) {
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return -RT_ERROR;
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}
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/* enable rx int */
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uart->uart_control(UART_CMD_SET_RXINT, (void *)0);
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/* use customized int isr */
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uart->uart_control(UART_CMD_SET_RXCB, uart3_isr);
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uart->uart_control(UART_CMD_SET_RXINT_BUF, NULL);
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rt_hw_serial_register(&uart3, "uart3",
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
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(void *)3);
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}
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return RT_EOK;
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}
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#if defined BOARD_EMSK
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#define CONSOLE_UART "uart1"
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struct rt_serial_device *console_uart = &uart1;
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#elif defined BOARD_IOTDK || defined BOARD_EMSDP || defined BOARD_NSIM
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#define CONSOLE_UART "uart0"
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struct rt_serial_device *console_uart = &uart0;
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#elif defined BOARD_AXS
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#define CONSOLE_UART "uart2"
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struct rt_serial_device *console_uart = &uart2;
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#elif defined BOARD_HSDK
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#define CONSOLE_UART "uart3"
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struct rt_serial_device *console_uart = &uart3;
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#else
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#error "no supported board selected!"
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#endif
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void rt_hw_console_output(const char *str)
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{
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while(*str != '\0')
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{
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if (*str == '\n') {
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_putc(console_uart,'\r');
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}
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_putc(console_uart,*str);
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str++;
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}
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}
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void rt_hw_board_init()
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{
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rt_hw_uart_init();
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rt_components_board_init();
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rt_console_set_device(CONSOLE_UART);
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}
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static void rt_hw_timer_isr(int vector, void *param)
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{
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arc_timer_int_clear(BOARD_OS_TIMER_ID);
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rt_tick_increase();
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}
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int rt_hw_timer_init(void)
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{
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unsigned int cyc = BOARD_CPU_CLOCK / RT_TICK_PER_SECOND;
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int_disable(BOARD_OS_TIMER_INTNO); /* disable os timer interrupt */
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arc_timer_stop(BOARD_OS_TIMER_ID);
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arc_timer_start(BOARD_OS_TIMER_ID, TIMER_CTRL_IE | TIMER_CTRL_NH, cyc);
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int_handler_install(BOARD_OS_TIMER_INTNO, (INT_HANDLER_T)rt_hw_timer_isr);
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int_pri_set(BOARD_OS_TIMER_INTNO, INT_PRI_MIN + 1); /* currently, firq(INT_PRI_MIN) not supported*/
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int_enable(BOARD_OS_TIMER_INTNO);
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return 0;
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}
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INIT_BOARD_EXPORT(rt_hw_timer_init);
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