282 lines
7.4 KiB
C
282 lines
7.4 KiB
C
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/*
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* Copyright (c) 2006-2020, 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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* 2020-04-28 xckhmf Modify for <nrfx>
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* 2020-10-31 xckhmf Support for UART1
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*
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*/
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#include <rtdevice.h>
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#include <nrfx_uarte.h>
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#include "drv_uart.h"
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#ifdef BSP_USING_UART
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#if defined(BSP_USING_UART0) || defined(BSP_USING_UART1)
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typedef struct
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{
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struct rt_serial_device *serial;
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nrfx_uarte_t uarte_instance;
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uint8_t rx_length;
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uint8_t tx_buffer[1];
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uint8_t rx_buffer[1];
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bool isInit;
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uint32_t rx_pin;
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uint32_t tx_pin;
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} drv_uart_cb_t;
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#ifdef BSP_USING_UART0
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static struct rt_serial_device m_serial_0;
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drv_uart_cb_t m_uarte0_cb = {
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.uarte_instance = NRFX_UARTE_INSTANCE(0),
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.rx_length = 0,
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.rx_pin = BSP_UART0_RX_PIN,
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.tx_pin = BSP_UART0_TX_PIN,
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.isInit = false
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};
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#endif /* BSP_USING_UART0 */
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#ifdef BSP_USING_UART1
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static struct rt_serial_device m_serial_1;
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drv_uart_cb_t m_uarte1_cb = {
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.uarte_instance = NRFX_UARTE_INSTANCE(1),
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.rx_length = 0,
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.rx_pin = BSP_UART1_RX_PIN,
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.tx_pin = BSP_UART1_TX_PIN,
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.isInit = false
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};
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#endif /* BSP_USING_UART1 */
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static void uarte_evt_handler(nrfx_uarte_event_t const * p_event,
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void * p_context)
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{
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drv_uart_cb_t *p_cb = RT_NULL;
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p_cb = (drv_uart_cb_t*)p_context;
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switch (p_event->type)
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{
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case NRFX_UARTE_EVT_RX_DONE:
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p_cb->rx_length = p_event->data.rxtx.bytes;
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if(p_cb->serial->parent.open_flag&RT_DEVICE_FLAG_INT_RX)
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{
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rt_hw_serial_isr(p_cb->serial, RT_SERIAL_EVENT_RX_IND);
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}
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(void)nrfx_uarte_rx(&(p_cb->uarte_instance), p_cb->rx_buffer, 1);
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break;
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case NRFX_UARTE_EVT_ERROR:
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(void)nrfx_uarte_rx(&(p_cb->uarte_instance), p_cb->rx_buffer, 1);
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break;
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case NRFX_UARTE_EVT_TX_DONE:
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if(p_cb->serial->parent.open_flag&RT_DEVICE_FLAG_INT_TX)
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{
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rt_hw_serial_isr(p_cb->serial, RT_SERIAL_EVENT_TX_DONE);
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}
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break;
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default:
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break;
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}
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}
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static rt_err_t _uart_cfg(struct rt_serial_device *serial, struct serial_configure *cfg)
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{
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nrfx_uarte_config_t config = NRFX_UARTE_DEFAULT_CONFIG(NRF_UARTE_PSEL_DISCONNECTED,\
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NRF_UARTE_PSEL_DISCONNECTED);
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drv_uart_cb_t *p_cb = RT_NULL;
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RT_ASSERT(serial != RT_NULL);
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RT_ASSERT(cfg != RT_NULL);
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if (serial->parent.user_data == RT_NULL)
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{
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return -RT_ERROR;
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}
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p_cb = (drv_uart_cb_t*)serial->parent.user_data;
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if(p_cb->isInit)
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{
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nrfx_uarte_uninit(&(p_cb->uarte_instance));
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p_cb->isInit = false;
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}
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switch (cfg->baud_rate)
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{
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case BAUD_RATE_2400:
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config.baudrate = NRF_UARTE_BAUDRATE_2400;
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break;
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case BAUD_RATE_4800:
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config.baudrate = NRF_UARTE_BAUDRATE_4800;
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break;
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case BAUD_RATE_9600:
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config.baudrate = NRF_UARTE_BAUDRATE_9600;
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break;
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case BAUD_RATE_19200:
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config.baudrate = NRF_UARTE_BAUDRATE_19200;
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break;
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case BAUD_RATE_38400:
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config.baudrate = NRF_UARTE_BAUDRATE_38400;
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break;
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case BAUD_RATE_57600:
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config.baudrate = NRF_UARTE_BAUDRATE_57600;
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break;
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case BAUD_RATE_115200:
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config.baudrate = NRF_UARTE_BAUDRATE_115200;
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break;
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case BAUD_RATE_230400:
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config.baudrate = NRF_UARTE_BAUDRATE_230400;
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break;
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case BAUD_RATE_460800:
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config.baudrate = NRF_UARTE_BAUDRATE_460800;
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break;
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case BAUD_RATE_921600:
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config.baudrate = NRF_UARTE_BAUDRATE_921600;
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break;
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case BAUD_RATE_2000000:
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case BAUD_RATE_3000000:
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return -RT_EINVAL;
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default:
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config.baudrate = NRF_UARTE_BAUDRATE_115200;
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break;
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}
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config.hal_cfg.parity = (cfg->parity == PARITY_NONE)?\
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NRF_UARTE_PARITY_EXCLUDED:NRF_UARTE_PARITY_INCLUDED;
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config.hal_cfg.hwfc = NRF_UARTE_HWFC_DISABLED;
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config.pselrxd = p_cb->rx_pin;
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config.pseltxd = p_cb->tx_pin;
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config.p_context = (void *)p_cb;
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nrfx_uarte_init(&(p_cb->uarte_instance),(nrfx_uarte_config_t const *)&config,uarte_evt_handler);
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nrfx_uarte_rx(&(p_cb->uarte_instance),p_cb->rx_buffer,1);
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p_cb->isInit = true;
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return RT_EOK;
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}
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static rt_err_t _uart_ctrl(struct rt_serial_device *serial, int cmd, void *arg)
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{
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drv_uart_cb_t *p_cb = RT_NULL;
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RT_ASSERT(serial != RT_NULL);
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if (serial->parent.user_data == RT_NULL)
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{
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return -RT_ERROR;
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}
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p_cb = (drv_uart_cb_t*)serial->parent.user_data;
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switch (cmd)
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{
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/* disable interrupt */
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case RT_DEVICE_CTRL_CLR_INT:
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break;
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/* enable interrupt */
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case RT_DEVICE_CTRL_SET_INT:
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break;
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case RT_DEVICE_CTRL_CUSTOM:
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if ((rt_uint32_t)(arg) == UART_CONFIG_BAUD_RATE_9600)
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{
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p_cb->serial->config.baud_rate = 9600;
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}
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else if ((rt_uint32_t)(arg) == UART_CONFIG_BAUD_RATE_115200)
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{
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p_cb->serial->config.baud_rate = 115200;
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}
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_uart_cfg(serial, &(serial->config));
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break;
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case RT_DEVICE_CTRL_PIN:
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_uart_cfg(serial, &(serial->config));
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break;
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case RT_DEVICE_POWERSAVE:
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if(p_cb->isInit)
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{
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nrfx_uarte_uninit(&(p_cb->uarte_instance));
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p_cb->isInit = false;
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}
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break;
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case RT_DEVICE_WAKEUP:
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_uart_cfg(serial, &(serial->config));
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break;
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default:
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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 int _uart_putc(struct rt_serial_device *serial, char c)
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{
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drv_uart_cb_t *p_cb = RT_NULL;
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int rtn = -1;
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RT_ASSERT(serial != RT_NULL);
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if (serial->parent.user_data != RT_NULL)
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{
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p_cb = (drv_uart_cb_t*)serial->parent.user_data;
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}
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p_cb->tx_buffer[0] = c;
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nrfx_uarte_tx(&(p_cb->uarte_instance),p_cb->tx_buffer,1);
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if(!(serial->parent.open_flag&RT_DEVICE_FLAG_INT_TX))
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{
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while(nrfx_uarte_tx_in_progress(&(p_cb->uarte_instance)))
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{
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}
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}
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return rtn;
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}
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static int _uart_getc(struct rt_serial_device *serial)
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{
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int ch = -1;
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drv_uart_cb_t *p_cb = RT_NULL;
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RT_ASSERT(serial != RT_NULL);
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if (serial->parent.user_data != RT_NULL)
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{
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p_cb = (drv_uart_cb_t*)serial->parent.user_data;
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}
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if(p_cb->rx_length)
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{
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ch = p_cb->rx_buffer[0];
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p_cb->rx_length--;
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}
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return ch;
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}
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static struct rt_uart_ops _uart_ops = {
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_uart_cfg,
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_uart_ctrl,
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_uart_putc,
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_uart_getc
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};
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void rt_hw_uart_init(void)
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{
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struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
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#ifdef BSP_USING_UART0
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m_serial_0.config = config;
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m_serial_0.ops = &_uart_ops;
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m_uarte0_cb.serial = &m_serial_0;
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rt_hw_serial_register(&m_serial_0, "uart0", \
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX , &m_uarte0_cb);
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#endif /* BSP_USING_UART0 */
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#ifdef BSP_USING_UART1
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m_serial_1.config = config;
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m_serial_1.ops = &_uart_ops;
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m_uarte1_cb.serial = &m_serial_1;
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rt_hw_serial_register(&m_serial_1, "uart1", \
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |RT_DEVICE_FLAG_INT_TX, &m_uarte1_cb);
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#endif /* BSP_USING_UART1 */
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}
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#endif /* defined(BSP_USING_UART0) || defined(BSP_USING_UART1) */
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#endif /* BSP_USING_UART */
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