QN9080C: RXERR is set during debugging

arpad_toth — Thu, 29 Nov 2018 13:57:25 GMT

Hello,

On QN9080C, after I setup Flexcomm0 - UART0, async mode, 115.2k 8N1, interrupt mode, I program it on the devkit it runs normally, but after I pause the IAR8 debugger, and resume it the UART0->FIFOSTAT: RXERR bit gets set,

even though I don't transmit anything to it, and RxD line is pulled high to 3.3v.

I don't get RXERR if I don't stop debugging.

/* FLEXCOMM0 */
/* select alternative DIO functionality for UART pins */
IOCON_PinMuxSet(IOCON, IO_PORTA_IDX, 4u, IOCON_FUNC4 | IOCON_MODE_HIGHZ | IOCON_DRIVE_LOW); /* FC0_TXD */
IOCON_PinMuxSet(IOCON, IO_PORTA_IDX, 5u, IOCON_FUNC4 | IOCON_MODE_HIGHZ | IOCON_DRIVE_LOW); /* FC0_RXD */
/* configure UART */
USART_GetDefaultConfig(&usartConfig);
usartConfig.baudRate_Bps = 115200u;
usartConfig.enableRx = TRUE;
usartConfig.enableTx = TRUE;
USART_Init(UART_GSM, &usartConfig, CLOCK_GetFreq(kCLOCK_BusClk));

USART_EnableInterrupts(UART_GSM, kUSART_TxErrorInterruptEnable | kUSART_RxLevelInterruptEnable | kUSART_RxErrorInterruptEnable);
EnableIRQ(UART_IRQ);

Re: QN9080C: RXERR is set during debugging

stephanie_m — Wed, 05 Dec 2018 17:46:47 GMT

Hello,

I'm running the USART example and I do not get such error, how are you managing the errors and interruptions?

Which example are you using as a base?

Regards,

Estephania

topic Re: QN9080C: RXERR is set during debugging in Wireless MCU

QN9080C: RXERR is set during debugging

Re: QN9080C: RXERR is set during debugging