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STM32F7: Fix serial IRQ handling 

Check that the RX or TX interrupt is enabled before calling
a registered handler with RxIrq or TxIrq arg.
pull/10774/head
Filip Jagodzinski 2019-06-06 11:51:39 +02:00
parent 94c27aa750
commit 84384162bb
1 changed files with 2 additions and 2 deletions
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4
targets/TARGET_STM/TARGET_STM32F7/serial_device.c
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@ -53,12 +53,12 @@ static void uart_irq(UARTName uart_name)
UART_HandleTypeDef *huart = &uart_handlers[id];
if (serial_irq_ids[id] != 0) {
if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) {
if (__HAL_UART_GET_IT(huart, UART_IT_TXE) != RESET) {
if (__HAL_UART_GET_IT(huart, UART_IT_TXE) != RESET && __HAL_UART_GET_IT_SOURCE(huart, UART_IT_TXE)) {
irq_handler(serial_irq_ids[id], TxIrq);
}
}
if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
if (__HAL_UART_GET_IT(huart, UART_IT_RXNE) != RESET) {
if (__HAL_UART_GET_IT(huart, UART_IT_RXNE) != RESET && __HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE)) {
irq_handler(serial_irq_ids[id], RxIrq);
/* Flag has been cleared when reading the content */
}