504 lines
15 KiB
C
504 lines
15 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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* Change Logs:
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* Date Author Notes
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* 2018-05-17 ZYH first implementation
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*/
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#include "drv_usart.h"
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#include "board.h"
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#include <rtdevice.h>
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#include <rthw.h>
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#include <rtthread.h>
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/* STM32 uart driver */
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struct drv_uart
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{
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UART_HandleTypeDef UartHandle;
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IRQn_Type irq;
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};
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static rt_err_t drv_configure(struct rt_serial_device *serial,
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struct serial_configure *cfg)
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{
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struct drv_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 drv_uart *)serial->parent.user_data;
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uart->UartHandle.Init.BaudRate = cfg->baud_rate;
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uart->UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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uart->UartHandle.Init.Mode = UART_MODE_TX_RX;
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uart->UartHandle.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->UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
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break;
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case DATA_BITS_9:
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uart->UartHandle.Init.WordLength = UART_WORDLENGTH_9B;
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break;
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default:
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uart->UartHandle.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->UartHandle.Init.StopBits = UART_STOPBITS_1;
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break;
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case STOP_BITS_2:
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uart->UartHandle.Init.StopBits = UART_STOPBITS_2;
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break;
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default:
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uart->UartHandle.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->UartHandle.Init.Parity = UART_PARITY_NONE;
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break;
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case PARITY_ODD:
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uart->UartHandle.Init.Parity = UART_PARITY_ODD;
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break;
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case PARITY_EVEN:
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uart->UartHandle.Init.Parity = UART_PARITY_EVEN;
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break;
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default:
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uart->UartHandle.Init.Parity = UART_PARITY_NONE;
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break;
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}
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if (HAL_UART_Init(&uart->UartHandle) != 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 drv_control(struct rt_serial_device *serial,
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int cmd, void *arg)
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{
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struct drv_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = (struct drv_uart *)serial->parent.user_data;
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switch (cmd)
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{
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case RT_DEVICE_CTRL_CLR_INT:
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/* disable rx irq */
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HAL_NVIC_DisableIRQ(uart->irq);
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/* disable interrupt */
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__HAL_UART_DISABLE_IT(&uart->UartHandle, UART_IT_RXNE);
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break;
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case RT_DEVICE_CTRL_SET_INT:
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/* enable rx irq */
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HAL_NVIC_EnableIRQ(uart->irq);
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HAL_NVIC_SetPriority(uart->irq, 5, 0);
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/* enable interrupt */
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__HAL_UART_ENABLE_IT(&uart->UartHandle, UART_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 drv_putc(struct rt_serial_device *serial, char c)
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{
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struct drv_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = (struct drv_uart *)serial->parent.user_data;
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while ((__HAL_UART_GET_FLAG(&uart->UartHandle, UART_FLAG_TXE) == RESET));
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uart->UartHandle.Instance->TDR = c;
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return 1;
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}
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static int drv_getc(struct rt_serial_device *serial)
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{
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int ch;
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struct drv_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = (struct drv_uart *)serial->parent.user_data;
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ch = -1;
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if (__HAL_UART_GET_FLAG(&uart->UartHandle, UART_FLAG_RXNE) != RESET)
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ch = uart->UartHandle.Instance->RDR & 0xff;
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return ch;
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}
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static const struct rt_uart_ops drv_uart_ops =
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{
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drv_configure,
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drv_control,
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drv_putc,
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drv_getc,
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};
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#if defined(BSP_USING_UART1)
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/* UART1 device driver structure */
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static struct drv_uart uart1;
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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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struct drv_uart *uart;
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uart = &uart1;
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/* enter interrupt */
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rt_interrupt_enter();
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/* UART in mode Receiver -------------------------------------------------*/
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if ((__HAL_UART_GET_FLAG(&uart->UartHandle, UART_FLAG_RXNE) != RESET) &&
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(__HAL_UART_GET_IT_SOURCE(&uart->UartHandle, UART_IT_RXNE) != RESET))
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{
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rt_hw_serial_isr(&serial1, RT_SERIAL_EVENT_RX_IND);
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/* Clear RXNE interrupt flag */
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__HAL_UART_CLEAR_IT(&uart->UartHandle, UART_FLAG_RXNE);
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}
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif /* BSP_USING_UART1 */
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#if defined(BSP_USING_UART4)
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/* UART4 device driver structure */
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static struct drv_uart uart4;
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struct rt_serial_device serial4;
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void UART4_IRQHandler(void)
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{
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struct drv_uart *uart;
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uart = &uart4;
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/* enter interrupt */
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rt_interrupt_enter();
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/* UART in mode Receiver -------------------------------------------------*/
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if ((__HAL_UART_GET_FLAG(&uart->UartHandle, UART_FLAG_RXNE) != RESET) &&
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(__HAL_UART_GET_IT_SOURCE(&uart->UartHandle, UART_IT_RXNE) != RESET))
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{
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rt_hw_serial_isr(&serial4, RT_SERIAL_EVENT_RX_IND);
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/* Clear RXNE interrupt flag */
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__HAL_UART_CLEAR_IT(&uart->UartHandle, UART_FLAG_RXNE);
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}
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif /* BSP_USING_UART4 */
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#if defined(BSP_USING_UART5)
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/* UART5 device driver structure */
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static struct drv_uart uart5;
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struct rt_serial_device serial5;
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void UART5_IRQHandler(void)
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{
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struct drv_uart *uart;
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uart = &uart5;
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/* enter interrupt */
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rt_interrupt_enter();
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/* UART in mode Receiver -------------------------------------------------*/
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if ((__HAL_UART_GET_FLAG(&uart->UartHandle, UART_FLAG_RXNE) != RESET) &&
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(__HAL_UART_GET_IT_SOURCE(&uart->UartHandle, UART_IT_RXNE) != RESET))
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{
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rt_hw_serial_isr(&serial5, RT_SERIAL_EVENT_RX_IND);
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/* Clear RXNE interrupt flag */
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__HAL_UART_CLEAR_IT(&uart->UartHandle, UART_FLAG_RXNE);
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}
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif /* BSP_USING_UART5 */
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#if defined(BSP_USING_UART6)
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/* UART6 device driver structure */
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static struct drv_uart uart6;
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struct rt_serial_device serial6;
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void USART6_IRQHandler(void)
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{
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struct drv_uart *uart;
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uart = &uart6;
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/* enter interrupt */
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rt_interrupt_enter();
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/* UART in mode Receiver -------------------------------------------------*/
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if ((__HAL_UART_GET_FLAG(&uart->UartHandle, UART_FLAG_RXNE) != RESET) &&
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(__HAL_UART_GET_IT_SOURCE(&uart->UartHandle, UART_IT_RXNE) != RESET))
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{
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rt_hw_serial_isr(&serial6, RT_SERIAL_EVENT_RX_IND);
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/* Clear RXNE interrupt flag */
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__HAL_UART_CLEAR_IT(&uart->UartHandle, UART_FLAG_RXNE);
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}
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif /* BSP_USING_UART6 */
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#if defined(BSP_USING_UART7)
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/* UART7 device driver structure */
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static struct drv_uart uart7;
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struct rt_serial_device serial7;
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void UART7_IRQHandler(void)
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{
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struct drv_uart *uart;
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uart = &uart7;
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/* enter interrupt */
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rt_interrupt_enter();
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/* UART in mode Receiver -------------------------------------------------*/
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if ((__HAL_UART_GET_FLAG(&uart->UartHandle, UART_FLAG_RXNE) != RESET) &&
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(__HAL_UART_GET_IT_SOURCE(&uart->UartHandle, UART_IT_RXNE) != RESET))
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{
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rt_hw_serial_isr(&serial7, RT_SERIAL_EVENT_RX_IND);
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/* Clear RXNE interrupt flag */
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__HAL_UART_CLEAR_IT(&uart->UartHandle, UART_FLAG_RXNE);
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}
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif /* BSP_USING_UART7 */
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/**
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* @brief UART MSP Initialization
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* This function configures the hardware resources used in this example:
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* - Peripheral's clock enable
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* - Peripheral's GPIO Configuration
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* - NVIC configuration for UART interrupt request enable
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* @param huart: UART handle pointer
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* @retval None
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*/
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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 == UART4)
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{
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/* UART4 clock enable */
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__HAL_RCC_UART4_CLK_ENABLE();
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__HAL_RCC_GPIOC_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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/**UART4 GPIO Configuration
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PC11 ------> UART4_RX
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PA0/WKUP ------> UART4_TX
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_11;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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GPIO_InitStruct.Alternate = GPIO_AF8_UART4;
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HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = GPIO_PIN_0;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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GPIO_InitStruct.Alternate = GPIO_AF8_UART4;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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/* UART4 interrupt Init */
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HAL_NVIC_SetPriority(UART4_IRQn, 5, 0);
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HAL_NVIC_EnableIRQ(UART4_IRQn);
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}
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else if (uartHandle->Instance == UART5)
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{
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/* UART5 clock enable */
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__HAL_RCC_UART5_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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__HAL_RCC_GPIOC_CLK_ENABLE();
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/**UART5 GPIO Configuration
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PB8 ------> UART5_RX
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PC12 ------> UART5_TX
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_8;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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GPIO_InitStruct.Alternate = GPIO_AF7_UART5;
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HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = GPIO_PIN_12;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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GPIO_InitStruct.Alternate = GPIO_AF8_UART5;
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HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
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/* UART5 interrupt Init */
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HAL_NVIC_SetPriority(UART5_IRQn, 5, 0);
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HAL_NVIC_EnableIRQ(UART5_IRQn);
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}
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else if (uartHandle->Instance == UART7)
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{
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/* UART7 clock enable */
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__HAL_RCC_UART7_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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/**UART7 GPIO Configuration
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PA15 ------> UART7_TX
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PA8 ------> UART7_RX
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_15 | GPIO_PIN_8;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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GPIO_InitStruct.Alternate = GPIO_AF12_UART7;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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/* UART7 interrupt Init */
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HAL_NVIC_SetPriority(UART7_IRQn, 5, 0);
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HAL_NVIC_EnableIRQ(UART7_IRQn);
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}
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else if (uartHandle->Instance == USART1)
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{
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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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PA10 ------> USART1_RX
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PA9 ------> USART1_TX
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_9 | GPIO_PIN_10;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
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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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}
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else if (uartHandle->Instance == USART6)
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{
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/* USART6 clock enable */
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__HAL_RCC_USART6_CLK_ENABLE();
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__HAL_RCC_GPIOC_CLK_ENABLE();
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/**USART6 GPIO Configuration
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PC7 ------> USART6_RX
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PC6 ------> USART6_TX
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_7 | GPIO_PIN_6;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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GPIO_InitStruct.Alternate = GPIO_AF8_USART6;
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HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
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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 == UART4)
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{
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/* Peripheral clock disable */
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__HAL_RCC_UART4_CLK_DISABLE();
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/**UART4 GPIO Configuration
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PC11 ------> UART4_RX
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PA0/WKUP ------> UART4_TX
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*/
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HAL_GPIO_DeInit(GPIOC, GPIO_PIN_11);
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HAL_GPIO_DeInit(GPIOA, GPIO_PIN_0);
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}
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else if (uartHandle->Instance == UART5)
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{
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/* Peripheral clock disable */
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__HAL_RCC_UART5_CLK_DISABLE();
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/**UART5 GPIO Configuration
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PB8 ------> UART5_RX
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PC12 ------> UART5_TX
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*/
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HAL_GPIO_DeInit(GPIOB, GPIO_PIN_8);
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HAL_GPIO_DeInit(GPIOC, GPIO_PIN_12);
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}
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else if (uartHandle->Instance == UART7)
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{
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/* Peripheral clock disable */
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__HAL_RCC_UART7_CLK_DISABLE();
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/**UART7 GPIO Configuration
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PA15 ------> UART7_TX
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PA8 ------> UART7_RX
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*/
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HAL_GPIO_DeInit(GPIOA, GPIO_PIN_15 | GPIO_PIN_8);
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}
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else if (uartHandle->Instance == USART1)
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{
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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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PB7 ------> USART1_RX
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PA9 ------> USART1_TX
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*/
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HAL_GPIO_DeInit(GPIOB, GPIO_PIN_7);
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HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9);
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}
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else if (uartHandle->Instance == USART6)
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{
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/* Peripheral clock disable */
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__HAL_RCC_USART6_CLK_DISABLE();
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/**USART6 GPIO Configuration
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PC7 ------> USART6_RX
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PC6 ------> USART6_TX
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*/
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HAL_GPIO_DeInit(GPIOC, GPIO_PIN_7 | GPIO_PIN_6);
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}
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}
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int hw_usart_init(void)
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{
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struct drv_uart *uart;
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struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
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#ifdef BSP_USING_UART1
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uart = &uart1;
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uart->UartHandle.Instance = USART1;
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uart->irq = USART1_IRQn;
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serial1.ops = &drv_uart_ops;
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serial1.config = config;
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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 /* BSP_USING_UART1 */
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#ifdef BSP_USING_UART4
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uart = &uart4;
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uart->UartHandle.Instance = UART4;
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uart->irq = UART4_IRQn;
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serial4.ops = &drv_uart_ops;
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serial4.config = config;
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/* register UART4 device */
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rt_hw_serial_register(&serial4, "uart4",
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
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uart);
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#endif /* BSP_USING_UART4 */
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#ifdef BSP_USING_UART5
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uart = &uart5;
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uart->UartHandle.Instance = UART5;
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uart->irq = UART5_IRQn;
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serial5.ops = &drv_uart_ops;
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serial5.config = config;
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/* register UART5 device */
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rt_hw_serial_register(&serial5, "uart5",
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
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uart);
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#endif /* BSP_USING_UART5 */
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#ifdef BSP_USING_UART6
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uart = &uart6;
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uart->UartHandle.Instance = USART6;
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uart->irq = USART6_IRQn;
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serial6.ops = &drv_uart_ops;
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|
serial6.config = config;
|
|
/* register UART6 device */
|
|
rt_hw_serial_register(&serial6, "uart6",
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
|
|
uart);
|
|
#endif /* BSP_USING_UART6 */
|
|
#ifdef BSP_USING_UART7
|
|
uart = &uart7;
|
|
uart->UartHandle.Instance = UART7;
|
|
uart->irq = UART7_IRQn;
|
|
serial7.ops = &drv_uart_ops;
|
|
serial7.config = config;
|
|
/* register UART7 device */
|
|
rt_hw_serial_register(&serial7, "uart7",
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
|
|
uart);
|
|
#endif /* BSP_USING_UART7 */
|
|
return 0;
|
|
}
|
|
INIT_BOARD_EXPORT(hw_usart_init);
|