flipperzero-firmware/firmware/targets/f5/Src/usart.c

#include "usart.h"

UART_HandleTypeDef huart1;

void MX_USART1_UART_Init(void) {
    huart1.Instance = USART1;
    huart1.Init.BaudRate = 115200;
    huart1.Init.WordLength = UART_WORDLENGTH_8B;
    huart1.Init.StopBits = UART_STOPBITS_1;
    huart1.Init.Parity = UART_PARITY_NONE;
    huart1.Init.Mode = UART_MODE_TX_RX;
    huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
    huart1.Init.OverSampling = UART_OVERSAMPLING_16;
    huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
    huart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;
    huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;

    if (HAL_UART_Init(&huart1) != HAL_OK) {
        Error_Handler();
    }

    if (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK) {
        Error_Handler();
    }

    if (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK) {
        Error_Handler();
    }

    if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK) {
        Error_Handler();
    }
}

void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle) {
    GPIO_InitTypeDef GPIO_InitStruct = {0};
    if(uartHandle->Instance==USART1) {

        __HAL_RCC_USART1_CLK_ENABLE();
        __HAL_RCC_GPIOB_CLK_ENABLE();
        GPIO_InitStruct.Pin = USART1_TX_Pin|USART1_RX_Pin;
        GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
        GPIO_InitStruct.Pull = GPIO_NOPULL;
        GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
        GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
        HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
    }
}

void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle) {
    if(uartHandle->Instance==USART1) {
        __HAL_RCC_USART1_CLK_DISABLE();
        HAL_GPIO_DeInit(GPIOB, USART1_TX_Pin|USART1_RX_Pin);
    }
}