void serial_free(serial_t *obj)
{
// Reset UART and disable clock
if (obj->uart == UART_1) {
__USART1_FORCE_RESET();
__USART1_RELEASE_RESET();
__USART1_CLK_DISABLE();
}
if (obj->uart == UART_2) {
__USART2_FORCE_RESET();
__USART2_RELEASE_RESET();
__USART2_CLK_DISABLE();
}
if (obj->uart == UART_3) {
__USART3_FORCE_RESET();
__USART3_RELEASE_RESET();
__USART3_CLK_DISABLE();
}
if (obj->uart == UART_4) {
__USART4_FORCE_RESET();
__USART4_RELEASE_RESET();
__USART4_CLK_DISABLE();
}
if (obj->uart == UART_5) {
__USART5_FORCE_RESET();
__USART5_RELEASE_RESET();
__USART5_CLK_DISABLE();
}
if (obj->uart == UART_6) {
__USART6_FORCE_RESET();
__USART6_RELEASE_RESET();
__USART6_CLK_DISABLE();
}
if (obj->uart == UART_7) {
__USART7_FORCE_RESET();
__USART7_RELEASE_RESET();
__USART7_CLK_DISABLE();
}
if (obj->uart == UART_8) {
__USART8_FORCE_RESET();
__USART8_RELEASE_RESET();
__USART8_CLK_DISABLE();
}
// Configure GPIOs
pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
serial_irq_ids[obj->index] = 0;
}
/**
* @brief UART MSP De-Initialization
* This function frees the hardware resources used in this example:
* - Disable the Peripheral's clock
* - Revert GPIO and NVIC configuration to their default state
* @param huart: UART handle pointer
* @retval None
*/
void HAL_UART_MspDeInit(UART_HandleTypeDef *huart)
{
switch((uint32_t)huart->Instance)
{
case (uint32_t)USART1 :
{
/*##-1- Reset peripherals ##################################################*/
__USART1_FORCE_RESET();
__USART1_RELEASE_RESET();
__USART1_CLK_DISABLE();
/*##-2- Disable peripherals and GPIO Clocks #################################*/
/* Configure UART Tx/Rx as alternate function */
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9 | GPIO_PIN_10);
/*##-3- Disable the NVIC for UART ##########################################*/
IRQ_Managment(__DISABLE, USART1_IRQn);
}
break;
case (uint32_t)USART2 :
{
/*##-1- Reset peripherals ##################################################*/
__USART2_FORCE_RESET();
__USART2_RELEASE_RESET();
__USART2_CLK_DISABLE();
/*##-2- Disable peripherals and GPIO Clocks #################################*/
/* Configure UART Tx/Rx as alternate function */
HAL_GPIO_DeInit(GPIOD, GPIO_PIN_5 | GPIO_PIN_6);
/*##-3- Disable the NVIC for UART ##########################################*/
IRQ_Managment(__DISABLE, USART2_IRQn);
}
break;
case (uint32_t)USART3 :
{
/*##-1- Reset peripherals ##################################################*/
__USART3_FORCE_RESET();
__USART3_RELEASE_RESET();
__USART3_CLK_DISABLE();
/*##-2- Disable peripherals and GPIO Clocks #################################*/
/* Configure UART Tx/Rx as alternate function */
HAL_GPIO_DeInit(GPIOD, GPIO_PIN_9 | GPIO_PIN_10);
/*##-3- Disable the NVIC for UART ##########################################*/
IRQ_Managment(__DISABLE, USART3_8_IRQn);
}
break;
case (uint32_t)USART4 :
{
/*##-1- Reset peripherals ##################################################*/
__USART4_FORCE_RESET();
__USART4_RELEASE_RESET();
__USART4_CLK_DISABLE();
/*##-2- Disable peripherals and GPIO Clocks #################################*/
/* Configure UART Tx/Rx as alternate function */
HAL_GPIO_DeInit(GPIOC, GPIO_PIN_10 | GPIO_PIN_11);
/*##-3- Disable the NVIC for UART ##########################################*/
IRQ_Managment(__DISABLE, USART3_8_IRQn);
}
break;
case (uint32_t)USART5 :
{
/*##-1- Reset peripherals ##################################################*/
__USART5_FORCE_RESET();
__USART5_RELEASE_RESET();
__USART5_CLK_DISABLE();
/*##-2- Disable peripherals and GPIO Clocks #################################*/
/* Configure UART Tx/Rx as alternate function */
HAL_GPIO_DeInit(GPIOB, GPIO_PIN_3 | GPIO_PIN_4);
/*##-3- Disable the NVIC for UART ##########################################*/
IRQ_Managment(__DISABLE, USART3_8_IRQn);
}
break;
case (uint32_t)USART6 :
{
/*##-1- Reset peripherals ##################################################*/
__USART6_FORCE_RESET();
__USART6_RELEASE_RESET();
__USART6_CLK_DISABLE();
/*##-2- Disable peripherals and GPIO Clocks #################################*/
/* Configure UART Tx/Rx as alternate function */
HAL_GPIO_DeInit(GPIOF, GPIO_PIN_9 | GPIO_PIN_10);
/*##-3- Disable the NVIC for UART ##########################################*/
IRQ_Managment(__DISABLE, USART3_8_IRQn);
}
break;
case (uint32_t)USART7 :
{
/*##-1- Reset peripherals ##################################################*/
__USART7_FORCE_RESET();
__USART7_RELEASE_RESET();
__USART7_CLK_DISABLE();
/*##-2- Disable peripherals and GPIO Clocks #################################*/
/* Configure UART Tx/Rx as alternate function */
HAL_GPIO_DeInit(GPIOF, GPIO_PIN_2 | GPIO_PIN_3);
/*##-3- Disable the NVIC for UART ##########################################*/
IRQ_Managment(__DISABLE, USART3_8_IRQn);
}
break;
case (uint32_t)USART8 :
{
/*##-1- Reset peripherals ##################################################*/
__USART8_FORCE_RESET();
__USART8_RELEASE_RESET();
__USART8_CLK_DISABLE();
/*##-2- Disable peripherals and GPIO Clocks #################################*/
/* Configure UART Tx/Rx as alternate function */
HAL_GPIO_DeInit(GPIOC, GPIO_PIN_8 | GPIO_PIN_9);
/*##-3- Disable the NVIC for UART ##########################################*/
IRQ_Managment(__DISABLE, USART3_8_IRQn);
}
break;
}
}
