RTOS/AWR1443: Timeout resolution

Alex Shirley

Intellectual 390 points

Part Number: AWR1443

Tool/software: TI-RTOS

Hey Guys,

I'm reviewing the documentation for the timeouts for the UART in:

/ti/mmwave_sdk_01_02_00_05/packages/ti/drivers/uart/

I can't seem to find the resolution of the timeout for reading and writing. Is it in clock ticks, useconds, or some other arbitrary tick?

The current text just says "Timeout for write semaphore" and "Timeout for read semaphore" for writeTimeout and readTimeout.

Thanks

over 5 years ago

0 Cesar over 5 years ago

TI__Guru*** 138329 points

Hi

Based on code timeout is used in following TI RTOS API

SemaphoreP_pend(gIntSemaHandle, BIOS_WAIT_FOREVER);

It is just a large number used for timeout.

Uart.c
/* Default UART parameters structure */
const UART_Params UART_defaultParams = {
UART_WAIT_FOREVER, /* readTimeout */
UART_WAIT_FOREVER, /* writeTimeout */

Uart.h
/*!
* @brief Wait forever define
*/
#define UART_WAIT_FOREVER 0xFFFFFFFFU

Thank you
Cesar

0 Alex Shirley over 5 years ago in reply to Cesar

Intellectual 390 points

Sure, that's the default value, but I'm investigating changing it for a Modbus Driver. Would it be better to create a timer instead?

0 Alex Shirley over 5 years ago in reply to Cesar

Intellectual 390 points

Sure, that's the default value, but I'm investigating changing it for a Modbus Driver. Is that a number of ticks? What units are used?
Would it be better to create a timer instead?

0 Jitendra Gupta over 5 years ago in reply to Alex Shirley

TI__Guru 68140 points

Hello Alex,

If you don't want it to block forever as given in above code snippet then you can pass your timeout value (instead of adding a timer at application space).

Default tick value is 1000us as mentioned in one of TIRtos Clock doc.

so you can invoke like this --> SemaphoreP_pend(gIntSemaHandle, <timeout Value>);

Regards,

Jitendra

0 Alex Shirley over 5 years ago in reply to Jitendra Gupta

Intellectual 390 points

Awesome! Thank you!

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RTOS/AWR1443: Timeout resolution