UART_HandleTypeDef Uart1Handle;

void HAL_UART1_Port_Init()
{
  GPIO_InitTypeDef  GPIO_InitStruct;

  /*##-1- Enable peripherals and GPIO Clocks ##*/
  /* Enable GPIO TX/RX clock */
  __HAL_RCC_GPIOB_CLK_ENABLE(); // PB6_USART1_TXD, PB7_USART1_RXD

  /* Enable USARTx clock */
  __HAL_RCC_USART1_FORCE_RESET(); // USART1強迫重置
  __HAL_RCC_USART1_RELEASE_RESET(); // USART1重置結束
  __HAL_RCC_USART1_CLK_ENABLE(); // 啟用USART1的Clock

  /* 
    Enable Alternative IO Clock AFIO 
    AFIO Remap USART 1
     Enable the remapping of USART1 alternate function TX and RX.
     ENABLE: Remap     (TX/PB6, RX/PB7)
  */
  __HAL_RCC_AFIO_CLK_ENABLE(); // 致能 Alternative IO Clock
  __HAL_AFIO_REMAP_USART1_ENABLE(); // 設定將USART1 Remap IO
  
  /*##-2- Configure peripheral GPIO ##*/
  /* UART TX GPIO pin configuration  */
  GPIO_InitStruct.Pin       = GPIO_PIN_6;
  GPIO_InitStruct.Mode      = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull      = GPIO_PULLUP;
  GPIO_InitStruct.Speed     = GPIO_SPEED_FREQ_HIGH;

  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /* UART RX GPIO pin configuration  */
  GPIO_InitStruct.Pin = GPIO_PIN_7;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}