bool usart_get_interrupt_source(uint32_t usart, uint32_t flag)
{
uint32_t flag_set = (USART_ISR(usart) & flag);
/* IDLE, RXNE, TC, TXE interrupts */
if ((flag >= USART_ISR_IDLE) && (flag <= USART_ISR_TXE)) {
return ((flag_set & USART_CR1(usart)) != 0);
/* Overrun error */
} else if (flag == USART_ISR_ORE) {
return flag_set && (USART_CR3(usart) & USART_CR3_CTSIE);
}
return false;
}
void BT_ISR(void)
{
if (((USART_CR1(BTUART) & USART_CR1_RXNEIE) != 0) &&
((USART_ISR(BTUART) & USART_ISR_RXNE) != 0))
{
/* Retrieve the data from the peripheral. */
*ptr = usart_recv(BTUART);
if ((ptr - bt_buf) < (int)sizeof(bt_buf) -1) {
ptr++;
}
//printf("%c", *ptr);
}
}
void UART5_IRQHandler(void){
USART_ISR(4);
}
void UART4_IRQHandler(void){
USART_ISR(3);
}
void USART3_IRQHandler(void){
USART_ISR(2);
}
void USART2_IRQHandler(void){
USART_ISR(1);
}
/////////////////////////////////////////////////////////////////////
// USARTs ISRs. For convenience, they all call USART_ISR(n);
/////////////////////////////////////////////////////////////////////
// @brief : usart1 ISR handler. Uses USART_ISR(n) for service.
void USART1_IRQHandler(void){
USART_ISR(0);
}
void usart_wait_recv_ready(uint32_t usart)
{
/* Wait until the data is ready to be received. */
while ((USART_ISR(usart) & USART_ISR_RXNE) == 0);
}
void usart_wait_send_ready(uint32_t usart)
{
/* Wait until the data has been transferred into the shift register. */
while ((USART_ISR(usart) & USART_ISR_TXE) == 0);
}
bool usart_get_flag(uint32_t usart, uint32_t flag)
{
return ((USART_ISR(usart) & flag) != 0);
}
bool usart_is_send_ready(uint32_t usart)
{
return ((USART_ISR(usart) & USART_ISR_TXE)); /* TXE set, means ready to write byte */
}
bool usart_is_recv_ready(uint32_t usart)
{
return ((USART_ISR(usart) & USART_ISR_RXNE)); /* RXNE set means there is data to be read */
}
bool usart_is_recv_ready(uint32_t usart)
{
return (USART_ISR(usart) & USART_ISR_RXNE);
}
bool usart_is_send_ready(uint32_t usart)
{
return (USART_ISR(usart) & USART_ISR_TXE);
}
