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[NUCLEO_F103RB] Serial interrupt fixes 

- use TC flag instead of TXE for TX interrupt
- clear interrupt flags to prevent possible interrupt storm
pull/122/head
Bogdan Marinescu 2013-12-09 13:01:39 +02:00
parent 2b8e05e002
commit faee2bf073
1 changed files with 10 additions and 19 deletions
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29
libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/serial_api.c
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@ -182,30 +182,21 @@ void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_b
******************************************************************************/
// not api
void uart1_irq(void) {
USART_TypeDef *usart = (USART_TypeDef *)UART_1;
if (serial_irq_ids[0] != 0) {
if (USART_GetITStatus(usart, USART_IT_TXE) != RESET) {
irq_handler(serial_irq_ids[0], TxIrq);
static void uart_irq(USART_TypeDef* usart, int id) {
if (serial_irq_ids[id] != 0) {
if (USART_GetITStatus(usart, USART_IT_TC) != RESET) {
irq_handler(serial_irq_ids[id], TxIrq);
USART_ClearITPendingBit(usart, USART_IT_TC);
}
if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) {
irq_handler(serial_irq_ids[0], RxIrq);
irq_handler(serial_irq_ids[id], RxIrq);
USART_ClearITPendingBit(usart, USART_IT_RXNE);
}
}
}
// not api
void uart2_irq(void) {
USART_TypeDef *usart = (USART_TypeDef *)UART_2;
if (serial_irq_ids[1] != 0) {
if (USART_GetITStatus(usart, USART_IT_TXE) != RESET) {
irq_handler(serial_irq_ids[1], TxIrq);
}
if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) {
irq_handler(serial_irq_ids[1], RxIrq);
}
}
}
static void uart1_irq(void) {uart_irq((USART_TypeDef*)UART_1, 0);}
static void uart2_irq(void) {uart_irq((USART_TypeDef*)UART_2, 1);}
void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
irq_handler = handler;
@ -233,7 +224,7 @@ void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
USART_ITConfig(usart, USART_IT_RXNE, ENABLE);
}
else { // TxIrq
USART_ITConfig(usart, USART_IT_TXE, ENABLE);
USART_ITConfig(usart, USART_IT_TC, ENABLE);
}
NVIC_SetVector(irq_n, vector);