58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
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#include "stm32f7xx_hal.h"
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#include "ext_uart.h"
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UART_HandleTypeDef ext_uart; // extension uart handler
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//------------------------------------------------------------------------------
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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;
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if(huart->Instance==USART6)
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{
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__HAL_RCC_GPIOC_CLK_ENABLE();
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__HAL_RCC_USART6_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_PULLUP;
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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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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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void Ext_UART_Init(uint32_t speed)
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{
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ext_uart.Instance = USART6;
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ext_uart.Init.BaudRate = speed;
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ext_uart.Init.WordLength = UART_WORDLENGTH_8B;
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ext_uart.Init.StopBits = UART_STOPBITS_1;
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ext_uart.Init.Parity = UART_PARITY_NONE;
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ext_uart.Init.Mode = UART_MODE_TX_RX;
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ext_uart.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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ext_uart.Init.OverSampling = UART_OVERSAMPLING_16;
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ext_uart.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
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ext_uart.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
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HAL_UART_Init(&ext_uart);
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/* USART6 interrupt Init */
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HAL_NVIC_SetPriority(USART6_IRQn, 0, 0);
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HAL_NVIC_EnableIRQ(USART6_IRQn);
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}
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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void USART6_IRQHandler(void)
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{
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HAL_UART_IRQHandler(&ext_uart);
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}
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