/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2020-04-28 xckhmf Modify for * 2020-10-31 xckhmf Support for UART1 * */ #include #include #include "drv_uart.h" #ifdef BSP_USING_UART #if defined(BSP_USING_UART0) || defined(BSP_USING_UART1) typedef struct { struct rt_serial_device *serial; nrfx_uarte_t uarte_instance; uint8_t rx_length; uint8_t tx_buffer[1]; uint8_t rx_buffer[1]; bool isInit; uint32_t rx_pin; uint32_t tx_pin; } drv_uart_cb_t; #ifdef BSP_USING_UART0 static struct rt_serial_device m_serial_0; drv_uart_cb_t m_uarte0_cb = { .uarte_instance = NRFX_UARTE_INSTANCE(0), .rx_length = 0, .rx_pin = BSP_UART0_RX_PIN, .tx_pin = BSP_UART0_TX_PIN, .isInit = false }; #endif /* BSP_USING_UART0 */ #ifdef BSP_USING_UART1 static struct rt_serial_device m_serial_1; drv_uart_cb_t m_uarte1_cb = { .uarte_instance = NRFX_UARTE_INSTANCE(1), .rx_length = 0, .rx_pin = BSP_UART1_RX_PIN, .tx_pin = BSP_UART1_TX_PIN, .isInit = false }; #endif /* BSP_USING_UART1 */ static void uarte_evt_handler(nrfx_uarte_event_t const * p_event, void * p_context) { drv_uart_cb_t *p_cb = RT_NULL; p_cb = (drv_uart_cb_t*)p_context; switch (p_event->type) { case NRFX_UARTE_EVT_RX_DONE: p_cb->rx_length = p_event->data.rxtx.bytes; if(p_cb->serial->parent.open_flag&RT_DEVICE_FLAG_INT_RX) { rt_hw_serial_isr(p_cb->serial, RT_SERIAL_EVENT_RX_IND); } (void)nrfx_uarte_rx(&(p_cb->uarte_instance), p_cb->rx_buffer, 1); break; case NRFX_UARTE_EVT_ERROR: (void)nrfx_uarte_rx(&(p_cb->uarte_instance), p_cb->rx_buffer, 1); break; case NRFX_UARTE_EVT_TX_DONE: if(p_cb->serial->parent.open_flag&RT_DEVICE_FLAG_INT_TX) { rt_hw_serial_isr(p_cb->serial, RT_SERIAL_EVENT_TX_DONE); } break; default: break; } } static rt_err_t _uart_cfg(struct rt_serial_device *serial, struct serial_configure *cfg) { nrfx_uarte_config_t config = NRFX_UARTE_DEFAULT_CONFIG(NRF_UARTE_PSEL_DISCONNECTED,\ NRF_UARTE_PSEL_DISCONNECTED); drv_uart_cb_t *p_cb = RT_NULL; RT_ASSERT(serial != RT_NULL); RT_ASSERT(cfg != RT_NULL); if (serial->parent.user_data == RT_NULL) { return -RT_ERROR; } p_cb = (drv_uart_cb_t*)serial->parent.user_data; if(p_cb->isInit) { nrfx_uarte_uninit(&(p_cb->uarte_instance)); p_cb->isInit = false; } switch (cfg->baud_rate) { case BAUD_RATE_2400: config.baudrate = NRF_UARTE_BAUDRATE_2400; break; case BAUD_RATE_4800: config.baudrate = NRF_UARTE_BAUDRATE_4800; break; case BAUD_RATE_9600: config.baudrate = NRF_UARTE_BAUDRATE_9600; break; case BAUD_RATE_19200: config.baudrate = NRF_UARTE_BAUDRATE_19200; break; case BAUD_RATE_38400: config.baudrate = NRF_UARTE_BAUDRATE_38400; break; case BAUD_RATE_57600: config.baudrate = NRF_UARTE_BAUDRATE_57600; break; case BAUD_RATE_115200: config.baudrate = NRF_UARTE_BAUDRATE_115200; break; case BAUD_RATE_230400: config.baudrate = NRF_UARTE_BAUDRATE_230400; break; case BAUD_RATE_460800: config.baudrate = NRF_UARTE_BAUDRATE_460800; break; case BAUD_RATE_921600: config.baudrate = NRF_UARTE_BAUDRATE_921600; break; case BAUD_RATE_2000000: case BAUD_RATE_3000000: return -RT_EINVAL; default: config.baudrate = NRF_UARTE_BAUDRATE_115200; break; } config.hal_cfg.parity = (cfg->parity == PARITY_NONE)?\ NRF_UARTE_PARITY_EXCLUDED:NRF_UARTE_PARITY_INCLUDED; config.hal_cfg.hwfc = NRF_UARTE_HWFC_DISABLED; config.pselrxd = p_cb->rx_pin; config.pseltxd = p_cb->tx_pin; config.p_context = (void *)p_cb; nrfx_uarte_init(&(p_cb->uarte_instance),(nrfx_uarte_config_t const *)&config,uarte_evt_handler); nrfx_uarte_rx(&(p_cb->uarte_instance),p_cb->rx_buffer,1); p_cb->isInit = true; return RT_EOK; } static rt_err_t _uart_ctrl(struct rt_serial_device *serial, int cmd, void *arg) { drv_uart_cb_t *p_cb = RT_NULL; RT_ASSERT(serial != RT_NULL); if (serial->parent.user_data == RT_NULL) { return -RT_ERROR; } p_cb = (drv_uart_cb_t*)serial->parent.user_data; switch (cmd) { /* disable interrupt */ case RT_DEVICE_CTRL_CLR_INT: break; /* enable interrupt */ case RT_DEVICE_CTRL_SET_INT: break; case RT_DEVICE_CTRL_CUSTOM: if ((rt_uint32_t)(arg) == UART_CONFIG_BAUD_RATE_9600) { p_cb->serial->config.baud_rate = 9600; } else if ((rt_uint32_t)(arg) == UART_CONFIG_BAUD_RATE_115200) { p_cb->serial->config.baud_rate = 115200; } _uart_cfg(serial, &(serial->config)); break; case RT_DEVICE_CTRL_PIN: _uart_cfg(serial, &(serial->config)); break; case RT_DEVICE_POWERSAVE: if(p_cb->isInit) { nrfx_uarte_uninit(&(p_cb->uarte_instance)); p_cb->isInit = false; } break; case RT_DEVICE_WAKEUP: _uart_cfg(serial, &(serial->config)); break; default: return -RT_ERROR; } return RT_EOK; } static int _uart_putc(struct rt_serial_device *serial, char c) { drv_uart_cb_t *p_cb = RT_NULL; int rtn = -1; RT_ASSERT(serial != RT_NULL); if (serial->parent.user_data != RT_NULL) { p_cb = (drv_uart_cb_t*)serial->parent.user_data; } p_cb->tx_buffer[0] = c; nrfx_uarte_tx(&(p_cb->uarte_instance),p_cb->tx_buffer,1); if(!(serial->parent.open_flag&RT_DEVICE_FLAG_INT_TX)) { while(nrfx_uarte_tx_in_progress(&(p_cb->uarte_instance))) { } } return rtn; } static int _uart_getc(struct rt_serial_device *serial) { int ch = -1; drv_uart_cb_t *p_cb = RT_NULL; RT_ASSERT(serial != RT_NULL); if (serial->parent.user_data != RT_NULL) { p_cb = (drv_uart_cb_t*)serial->parent.user_data; } if(p_cb->rx_length) { ch = p_cb->rx_buffer[0]; p_cb->rx_length--; } return ch; } static struct rt_uart_ops _uart_ops = { _uart_cfg, _uart_ctrl, _uart_putc, _uart_getc }; void rt_hw_uart_init(void) { struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT; #ifdef BSP_USING_UART0 m_serial_0.config = config; m_serial_0.ops = &_uart_ops; m_uarte0_cb.serial = &m_serial_0; rt_hw_serial_register(&m_serial_0, "uart0", \ RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX , &m_uarte0_cb); #endif /* BSP_USING_UART0 */ #ifdef BSP_USING_UART1 m_serial_1.config = config; m_serial_1.ops = &_uart_ops; m_uarte1_cb.serial = &m_serial_1; rt_hw_serial_register(&m_serial_1, "uart1", \ RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |RT_DEVICE_FLAG_INT_TX, &m_uarte1_cb); #endif /* BSP_USING_UART1 */ } #endif /* defined(BSP_USING_UART0) || defined(BSP_USING_UART1) */ #endif /* BSP_USING_UART */