hi,I use RT1060 to detect Lin "break" by set LPUART Status Register (STAT)[LBKDE],that can trigger "kLPUART_LinBreakFlag" interrupt.But section of data cannot receive.
init uart and set STAT[LBKDE]:
static void LPUART2_init(void) {
LPUART_Init(LPUART2_PERIPHERAL, &LPUART2_config, LPUART2_CLOCK_SOURCE);
((LPUART_Type *)LPUART2_PERIPHERAL)->STAT |= LPUART_STAT_LBKDE(1);
LPUART_EnableInterrupts(LPUART2_PERIPHERAL, kLPUART_LinBreakInterruptEnable | kLPUART_RxDataRegFullInterruptEnable | kLPUART_RxOverrunInterruptEnable | kLPUART_TxFifoOverflowInterruptEnable | kLPUART_RxFifoUnderflowInterruptEnable);
/* Enable interrupt LPUART2_IRQn request in the NVIC. */
EnableIRQ(LPUART2_SERIAL_RX_TX_IRQN);
}
interrupt handle:
void LPUART2_SERIAL_RX_TX_IRQHANDLER(void) {
uint32_t intStatus;
status_t status;
/* Reading all interrupt flags of status registers */
intStatus = LPUART_GetStatusFlags(LPUART2_PERIPHERAL);
status = LPUART_ClearStatusFlags(LPUART2_PERIPHERAL, intStatus);
/*my code start */
if (intStatus & kLPUART_LinBreakFlag)
{
PRINTF("kLPUART_LinBreakFlag\r\n"); //It can be call
}
if (intStatus & kLPUART_RxDataRegFullFlag)
{
PRINTF("kLPUART_RxDataRegFullFlag\r\n"); //It cannot execute
PRINTF("data = 0x%x\r\n", LPUART_ReadByte(LPUART2_PERIPHERAL));
}
/*my code end*/
#if defined __CORTEX_M && (__CORTEX_M == 4U)
__DSB();
#endif
}
