413 lines
12 KiB
C
413 lines
12 KiB
C
/*
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* Copyright (c) 2006-2018, 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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*
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* Change Logs:
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* Date Author Notes
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* 2009-01-05 Bernard the first version
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* 2010-03-29 Bernard remove interrupt Tx and DMA Rx mode
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* 2013-05-13 aozima update for kehong-lingtai.
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* 2015-01-31 armink make sure the serial transmit complete in putc()
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* 2016-05-13 armink add DMA Rx mode
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* 2017-01-19 aubr.cool add interrupt Tx mode
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* 2017-04-13 aubr.cool correct Rx parity err
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* 2017-10-20 ZYH porting to HAL Libraries(with out DMA)
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* 2017-11-15 ZYH update to 3.0.0
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*/
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#include "board.h"
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#include <rtdevice.h>
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#include <drv_usart.h>
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/* STM32 uart driver */
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struct stm32_uart
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{
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UART_HandleTypeDef huart;
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IRQn_Type irq;
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};
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static rt_err_t stm32_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
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{
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struct stm32_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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RT_ASSERT(cfg != RT_NULL);
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uart = (struct stm32_uart *)serial->parent.user_data;
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uart->huart.Init.BaudRate = cfg->baud_rate;
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uart->huart.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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uart->huart.Init.Mode = UART_MODE_TX_RX;
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uart->huart.Init.OverSampling = UART_OVERSAMPLING_16;
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switch (cfg->data_bits)
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{
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case DATA_BITS_8:
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uart->huart.Init.WordLength = UART_WORDLENGTH_8B;
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break;
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case DATA_BITS_9:
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uart->huart.Init.WordLength = UART_WORDLENGTH_9B;
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break;
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default:
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uart->huart.Init.WordLength = UART_WORDLENGTH_8B;
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break;
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}
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switch (cfg->stop_bits)
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{
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case STOP_BITS_1:
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uart->huart.Init.StopBits = UART_STOPBITS_1;
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break;
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case STOP_BITS_2:
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uart->huart.Init.StopBits = UART_STOPBITS_2;
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break;
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default:
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uart->huart.Init.StopBits = UART_STOPBITS_1;
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break;
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}
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switch (cfg->parity)
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{
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case PARITY_NONE:
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uart->huart.Init.Parity = UART_PARITY_NONE;
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break;
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case PARITY_ODD:
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uart->huart.Init.Parity = UART_PARITY_ODD;
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break;
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case PARITY_EVEN:
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uart->huart.Init.Parity = UART_PARITY_EVEN;
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break;
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default:
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uart->huart.Init.Parity = UART_PARITY_NONE;
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break;
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}
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if (HAL_UART_Init(&uart->huart) != HAL_OK)
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{
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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 stm32_control(struct rt_serial_device *serial, int cmd, void *arg)
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{
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struct stm32_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = (struct stm32_uart *)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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/* disable rx irq */
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NVIC_DisableIRQ(uart->irq);
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/* disable interrupt */
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__HAL_UART_DISABLE_IT(&uart->huart, USART_IT_RXNE);
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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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/* enable rx irq */
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NVIC_EnableIRQ(uart->irq);
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/* enable interrupt */
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__HAL_UART_ENABLE_IT(&uart->huart, USART_IT_RXNE);
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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 stm32_putc(struct rt_serial_device *serial, char c)
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{
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struct stm32_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = (struct stm32_uart *)serial->parent.user_data;
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while (__HAL_UART_GET_FLAG(&uart->huart, UART_FLAG_TXE) == RESET);
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uart->huart.Instance->DR = c;
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return 1;
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}
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static int stm32_getc(struct rt_serial_device *serial)
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{
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int ch;
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struct stm32_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = (struct stm32_uart *)serial->parent.user_data;
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ch = -1;
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if (__HAL_UART_GET_FLAG(&uart->huart, UART_FLAG_RXNE) != RESET)
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{
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ch = uart->huart.Instance->DR & 0xff;
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}
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return ch;
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}
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/**
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* Uart common interrupt process. This need add to uart ISR.
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*
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* @param serial serial device
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*/
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static void uart_isr(struct rt_serial_device *serial)
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{
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struct stm32_uart *uart = (struct stm32_uart *) serial->parent.user_data;
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RT_ASSERT(uart != RT_NULL);
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if ((__HAL_UART_GET_FLAG(&uart->huart, UART_FLAG_RXNE) != RESET) && (__HAL_UART_GET_IT_SOURCE(&uart->huart, UART_IT_RXNE) != RESET))
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{
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rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
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__HAL_UART_CLEAR_FLAG(&uart->huart, UART_FLAG_RXNE);
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}
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}
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static const struct rt_uart_ops stm32_uart_ops =
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{
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stm32_configure,
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stm32_control,
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stm32_putc,
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stm32_getc,
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};
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#if defined(RT_USING_UART1)
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/* UART1 device driver structure */
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struct stm32_uart uart1 =
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{
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{USART1},
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USART1_IRQn
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};
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struct rt_serial_device serial1;
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void USART1_IRQHandler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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uart_isr(&serial1);
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif /* RT_USING_UART1 */
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#if defined(RT_USING_UART2)
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/* UART1 device driver structure */
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struct stm32_uart uart2 =
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{
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{USART2},
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USART2_IRQn
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};
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struct rt_serial_device serial2;
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void USART2_IRQHandler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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uart_isr(&serial2);
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif /* RT_USING_UART2 */
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#if defined(RT_USING_UART3)
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/* UART1 device driver structure */
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struct stm32_uart uart3 =
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{
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{USART3},
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USART3_IRQn
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};
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struct rt_serial_device serial3;
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void USART3_IRQHandler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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uart_isr(&serial3);
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif /* RT_USING_UART2 */
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static void MX_USART_UART_Init(UART_HandleTypeDef *uartHandle);
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int rt_hw_usart_init(void)
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{
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struct stm32_uart *uart;
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struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
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#if defined(RT_USING_UART1)
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uart = &uart1;
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config.baud_rate = BAUD_RATE_115200;
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serial1.ops = &stm32_uart_ops;
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serial1.config = config;
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MX_USART_UART_Init(&uart->huart);
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/* register UART1 device */
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rt_hw_serial_register(&serial1, "uart1",
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
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uart);
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#endif /* RT_USING_UART1 */
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#if defined(RT_USING_UART2)
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uart = &uart2;
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config.baud_rate = BAUD_RATE_115200;
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serial2.ops = &stm32_uart_ops;
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serial2.config = config;
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MX_USART_UART_Init(&uart->huart);
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/* register UART1 device */
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rt_hw_serial_register(&serial2, "uart2",
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
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uart);
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#endif /* RT_USING_UART1 */
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#if defined(RT_USING_UART3)
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uart = &uart3;
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config.baud_rate = BAUD_RATE_115200;
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serial3.ops = &stm32_uart_ops;
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serial3.config = config;
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MX_USART_UART_Init(&uart->huart);
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/* register UART1 device */
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rt_hw_serial_register(&serial3, "uart3",
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
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uart);
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#endif /* RT_USING_UART1 */
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return 0;
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}
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INIT_BOARD_EXPORT(rt_hw_usart_init);
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static void MX_USART_UART_Init(UART_HandleTypeDef *uartHandle)
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{
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rt_err_t result;
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uartHandle->Init.BaudRate = 115200;
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uartHandle->Init.WordLength = UART_WORDLENGTH_8B;
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uartHandle->Init.StopBits = UART_STOPBITS_1;
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uartHandle->Init.Parity = UART_PARITY_NONE;
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uartHandle->Init.Mode = UART_MODE_TX_RX;
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uartHandle->Init.HwFlowCtl = UART_HWCONTROL_NONE;
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uartHandle->Init.OverSampling = UART_OVERSAMPLING_16;
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result = HAL_UART_Init(uartHandle);
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RT_ASSERT(result == HAL_OK);
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}
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/* USART2 init function */
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void HAL_UART_MspInit(UART_HandleTypeDef *uartHandle)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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if (uartHandle->Instance == USART1)
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{
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/* USER CODE BEGIN USART1_MspInit 0 */
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/* USER CODE END USART1_MspInit 0 */
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/* USART1 clock enable */
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__HAL_RCC_USART1_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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/**USART1 GPIO Configuration
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PA9 ------> USART1_TX
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PA10 ------> USART1_RX
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_9;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = GPIO_PIN_10;
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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/* USART1 interrupt Init */
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HAL_NVIC_SetPriority(USART1_IRQn, 5, 0);
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HAL_NVIC_EnableIRQ(USART1_IRQn);
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/* USER CODE BEGIN USART1_MspInit 1 */
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/* USER CODE END USART1_MspInit 1 */
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}
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else if (uartHandle->Instance == USART2)
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{
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/* USER CODE BEGIN USART2_MspInit 0 */
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/* USER CODE END USART2_MspInit 0 */
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/* USART2 clock enable */
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__HAL_RCC_USART2_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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/**USART2 GPIO Configuration
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PA2 ------> USART2_TX
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PA3 ------> USART2_RX
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_2;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = GPIO_PIN_3;
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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/* USART2 interrupt Init */
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HAL_NVIC_SetPriority(USART2_IRQn, 5, 0);
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HAL_NVIC_EnableIRQ(USART2_IRQn);
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/* USER CODE BEGIN USART2_MspInit 1 */
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/* USER CODE END USART2_MspInit 1 */
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}
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else if (uartHandle->Instance == USART3)
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{
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/* USER CODE BEGIN USART3_MspInit 0 */
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/* USER CODE END USART3_MspInit 0 */
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/* USART3 clock enable */
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__HAL_RCC_USART3_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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/**USART3 GPIO Configuration
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PB10 ------> USART3_TX
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PB11 ------> USART3_RX
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_10;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = GPIO_PIN_11;
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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/* USART3 interrupt Init */
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HAL_NVIC_SetPriority(USART3_IRQn, 5, 0);
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HAL_NVIC_EnableIRQ(USART3_IRQn);
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/* USER CODE BEGIN USART3_MspInit 1 */
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/* USER CODE END USART3_MspInit 1 */
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}
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}
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void HAL_UART_MspDeInit(UART_HandleTypeDef *uartHandle)
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{
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if (uartHandle->Instance == USART1)
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{
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/* USER CODE BEGIN USART1_MspDeInit 0 */
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/* USER CODE END USART1_MspDeInit 0 */
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/* Peripheral clock disable */
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__HAL_RCC_USART1_CLK_DISABLE();
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/**USART1 GPIO Configuration
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PA9 ------> USART1_TX
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PA10 ------> USART1_RX
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*/
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HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9 | GPIO_PIN_10);
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/* USART1 interrupt Deinit */
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HAL_NVIC_DisableIRQ(USART1_IRQn);
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/* USER CODE BEGIN USART1_MspDeInit 1 */
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/* USER CODE END USART1_MspDeInit 1 */
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}
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else if (uartHandle->Instance == USART2)
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{
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/* USER CODE BEGIN USART2_MspDeInit 0 */
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/* USER CODE END USART2_MspDeInit 0 */
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/* Peripheral clock disable */
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__HAL_RCC_USART2_CLK_DISABLE();
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/**USART2 GPIO Configuration
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PA2 ------> USART2_TX
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PA3 ------> USART2_RX
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*/
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HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2 | GPIO_PIN_3);
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/* USART2 interrupt Deinit */
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HAL_NVIC_DisableIRQ(USART2_IRQn);
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/* USER CODE BEGIN USART2_MspDeInit 1 */
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/* USER CODE END USART2_MspDeInit 1 */
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}
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else if (uartHandle->Instance == USART3)
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{
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/* USER CODE BEGIN USART3_MspDeInit 0 */
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/* USER CODE END USART3_MspDeInit 0 */
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/* Peripheral clock disable */
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__HAL_RCC_USART3_CLK_DISABLE();
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/**USART3 GPIO Configuration
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PB10 ------> USART3_TX
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PB11 ------> USART3_RX
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*/
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HAL_GPIO_DeInit(GPIOB, GPIO_PIN_10 | GPIO_PIN_11);
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/* USART3 interrupt Deinit */
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HAL_NVIC_DisableIRQ(USART3_IRQn);
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/* USER CODE BEGIN USART3_MspDeInit 1 */
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/* USER CODE END USART3_MspDeInit 1 */
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}
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}
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