96 lines
2.9 KiB
C
96 lines
2.9 KiB
C
#include "main.h"
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extern DMA_HandleTypeDef hdma_usart1_rx;
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extern DMA_HandleTypeDef hdma_usart2_rx;
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void HAL_MspInit (void)
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{
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__HAL_RCC_SYSCFG_CLK_ENABLE();
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__HAL_RCC_PWR_CLK_ENABLE();
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}
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void HAL_UART_MspInit (UART_HandleTypeDef* huart)
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{
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GPIO_InitTypeDef GPIO_InitStruct = {0};
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if (huart->Instance == USART1) {
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__HAL_RCC_USART1_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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// PA9 ------> USART1_TX
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// PA10 ------> USART1_RX
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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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hdma_usart1_rx.Instance = DMA2_Stream2;
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hdma_usart1_rx.Init.Channel = DMA_CHANNEL_4;
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hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
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hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
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hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE;
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hdma_usart1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
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hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
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hdma_usart1_rx.Init.Mode = DMA_CIRCULAR;
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hdma_usart1_rx.Init.Priority = DMA_PRIORITY_MEDIUM;
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hdma_usart1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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HAL_DMA_Init(&hdma_usart1_rx);
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__HAL_LINKDMA(huart, hdmarx, hdma_usart1_rx);
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HAL_NVIC_SetPriority(USART1_IRQn, 1, 0);
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HAL_NVIC_EnableIRQ(USART1_IRQn);
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} else if (huart->Instance == USART2) {
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__HAL_RCC_USART2_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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// PA2 ------> USART2_TX
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// PA3 ------> USART2_RX
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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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hdma_usart2_rx.Instance = DMA1_Stream5;
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hdma_usart2_rx.Init.Channel = DMA_CHANNEL_4;
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hdma_usart2_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
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hdma_usart2_rx.Init.PeriphInc = DMA_PINC_DISABLE;
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hdma_usart2_rx.Init.MemInc = DMA_MINC_ENABLE;
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hdma_usart2_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
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hdma_usart2_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
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hdma_usart2_rx.Init.Mode = DMA_CIRCULAR;
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hdma_usart2_rx.Init.Priority = DMA_PRIORITY_MEDIUM;
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hdma_usart2_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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HAL_DMA_Init(&hdma_usart2_rx);
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__HAL_LINKDMA(huart, hdmarx, hdma_usart2_rx);
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HAL_NVIC_SetPriority(USART2_IRQn, 1, 0);
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HAL_NVIC_EnableIRQ(USART2_IRQn);
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}
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}
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void HAL_UART_MspDeInit (UART_HandleTypeDef* huart)
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{
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if (huart->Instance == USART1) {
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__HAL_RCC_USART1_CLK_DISABLE();
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HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10);
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HAL_DMA_DeInit(huart->hdmarx);
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HAL_NVIC_DisableIRQ(USART1_IRQn);
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} else if (huart->Instance == USART2) {
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__HAL_RCC_USART2_CLK_DISABLE();
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HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2|GPIO_PIN_3);
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HAL_DMA_DeInit(huart->hdmarx);
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HAL_NVIC_DisableIRQ(USART2_IRQn);
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}
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}
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