563 lines
18 KiB
C
563 lines
18 KiB
C
/*
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* File : drv_usart.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2015, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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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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* 2015-08-01 xiaonong the first version for stm32f7xx
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* 2016-01-15 ArdaFu the first version for stm32f4xx with STM32 HAL
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* 2016-01-15 zyh the first version for stm32f401rc with STM32 HAL
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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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uart->UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
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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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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_SetPriority(uart->irq, 5, 0);
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NVIC_EnableIRQ(uart->irq);
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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_FLAG(&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_UART2)
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/* UART2 device driver structure */
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static struct drv_uart uart2;
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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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struct drv_uart *uart;
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uart = &uart2;
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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(&serial2, RT_SERIAL_EVENT_RX_IND);
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/* Clear RXNE interrupt flag */
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__HAL_UART_CLEAR_FLAG(&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_UART2 */
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#if defined(BSP_USING_UART3)
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/* UART3 device driver structure */
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static struct drv_uart uart3;
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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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struct drv_uart *uart;
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uart = &uart3;
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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(&serial3, RT_SERIAL_EVENT_RX_IND);
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/* Clear RXNE interrupt flag */
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__HAL_UART_CLEAR_FLAG(&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_UART3 */
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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_FLAG(&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_FLAG(&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_LPUART1)
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/* UART6 device driver structure */
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static struct drv_uart lpuart1;
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struct rt_serial_device lpserial1;
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void LPUART1_IRQHandler(void)
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{
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struct drv_uart *uart;
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uart = &lpuart1;
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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(&lpserial1, RT_SERIAL_EVENT_RX_IND);
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/* Clear RXNE interrupt flag */
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__HAL_UART_CLEAR_FLAG(&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_LPUART1 */
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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 == LPUART1)
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{
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/* LPUART1 clock enable */
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__HAL_RCC_LPUART1_CLK_ENABLE();
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/* GPIOC clock enable */
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__HAL_RCC_GPIOC_CLK_ENABLE();
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/**LPUART1 GPIO Configuration
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PC0 ------> LPUART1_RX
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PC1 ------> LPUART1_TX
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1;
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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_LPUART1;
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HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
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}
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else 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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/* GPIOA clock enable */
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__HAL_RCC_GPIOA_CLK_ENABLE();
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/**UART4 GPIO Configuration
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PA0 ------> UART4_TX
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PA1 ------> UART4_RX
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1;
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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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}
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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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/* GPIOD clock enable */
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__HAL_RCC_GPIOD_CLK_ENABLE();
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/* GPIOC clock enable */
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__HAL_RCC_GPIOC_CLK_ENABLE();
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/**UART5 GPIO Configuration
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PC12 ------> UART5_TX
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PD2 ------> UART5_RX
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*/
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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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GPIO_InitStruct.Pin = GPIO_PIN_2;
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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(GPIOD, &GPIO_InitStruct);
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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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/* GPIOA clock 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 | 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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}
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else if (uartHandle->Instance == USART2)
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{
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/* USART2 clock enable */
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__HAL_RCC_USART2_CLK_ENABLE();
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/* GPIOA clock 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 | GPIO_PIN_3;
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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_USART2;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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}
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else if (uartHandle->Instance == USART3)
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{
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/* USART3 clock enable */
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__HAL_RCC_USART3_CLK_ENABLE();
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/* GPIOC clock enable */
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__HAL_RCC_GPIOC_CLK_ENABLE();
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/**USART3 GPIO Configuration
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PC4 ------> USART3_TX
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PC5 ------> USART3_RX
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_4 | GPIO_PIN_5;
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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_USART3;
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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 == LPUART1)
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{
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/* Peripheral clock disable */
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__HAL_RCC_LPUART1_CLK_DISABLE();
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/**LPUART1 GPIO Configuration
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PC0 ------> LPUART1_RX
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PC1 ------> LPUART1_TX
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*/
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HAL_GPIO_DeInit(GPIOC, GPIO_PIN_0 | GPIO_PIN_1);
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}
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else 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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PA0 ------> UART4_TX
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PA1 ------> UART4_RX
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*/
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HAL_GPIO_DeInit(GPIOA, GPIO_PIN_0 | GPIO_PIN_1);
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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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PC12 ------> UART5_TX
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PD2 ------> UART5_RX
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*/
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HAL_GPIO_DeInit(GPIOC, GPIO_PIN_12);
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HAL_GPIO_DeInit(GPIOD, GPIO_PIN_2);
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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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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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}
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else if (uartHandle->Instance == USART2)
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{
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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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}
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else if (uartHandle->Instance == USART3)
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{
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/* Peripheral clock disable */
|
|
__HAL_RCC_USART3_CLK_DISABLE();
|
|
|
|
/**USART3 GPIO Configuration
|
|
PC4 ------> USART3_TX
|
|
PC5 ------> USART3_RX
|
|
*/
|
|
HAL_GPIO_DeInit(GPIOC, GPIO_PIN_4 | GPIO_PIN_5);
|
|
}
|
|
}
|
|
|
|
int bsp_hw_usart_init(void)
|
|
{
|
|
struct drv_uart *uart;
|
|
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
|
|
#ifdef BSP_USING_UART1
|
|
uart = &uart1;
|
|
uart->UartHandle.Instance = USART1;
|
|
uart->irq = USART1_IRQn;
|
|
serial1.ops = &drv_uart_ops;
|
|
serial1.config = config;
|
|
/* register UART1 device */
|
|
rt_hw_serial_register(&serial1, "uart1",
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
|
|
uart);
|
|
#endif /* BSP_USING_UART1 */
|
|
#ifdef BSP_USING_UART2
|
|
uart = &uart2;
|
|
uart->UartHandle.Instance = USART2;
|
|
uart->irq = USART2_IRQn;
|
|
serial2.ops = &drv_uart_ops;
|
|
serial2.config = config;
|
|
/* register UART2 device */
|
|
rt_hw_serial_register(&serial2, "uart2",
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
|
|
uart);
|
|
#endif /* BSP_USING_UART2 */
|
|
#ifdef BSP_USING_UART3
|
|
uart = &uart3;
|
|
uart->UartHandle.Instance = USART3;
|
|
uart->irq = USART3_IRQn;
|
|
serial3.ops = &drv_uart_ops;
|
|
serial3.config = config;
|
|
/* register UART3 device */
|
|
rt_hw_serial_register(&serial3, "uart3",
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
|
|
uart);
|
|
#endif /* BSP_USING_UART3 */
|
|
#ifdef BSP_USING_UART4
|
|
uart = &uart4;
|
|
uart->UartHandle.Instance = UART4;
|
|
uart->irq = UART4_IRQn;
|
|
serial4.ops = &drv_uart_ops;
|
|
serial4.config = config;
|
|
/* register UART4 device */
|
|
rt_hw_serial_register(&serial4, "uart4",
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
|
|
uart);
|
|
#endif /* BSP_USING_UART4 */
|
|
#ifdef BSP_USING_UART5
|
|
uart = &uart5;
|
|
uart->UartHandle.Instance = UART5;
|
|
uart->irq = UART5_IRQn;
|
|
serial5.ops = &drv_uart_ops;
|
|
serial5.config = config;
|
|
/* register UART5 device */
|
|
rt_hw_serial_register(&serial5, "uart5",
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
|
|
uart);
|
|
#endif /* BSP_USING_UART5 */
|
|
#ifdef BSP_USING_LPUART1
|
|
uart = &lpuart1;
|
|
uart->UartHandle.Instance = LPUART1;
|
|
uart->irq = LPUART1_IRQn;
|
|
lpserial1.ops = &drv_uart_ops;
|
|
lpserial1.config = config;
|
|
/* register LPUART1 device */
|
|
rt_hw_serial_register(&lpserial1, "lpuart1",
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
|
|
uart);
|
|
#endif /* BSP_USING_LPUART1 */
|
|
return 0;
|
|
}
|
|
INIT_BOARD_EXPORT(bsp_hw_usart_init);
|