Legato Uart Read junk character , Read after wake up , Ar759x

[lotam]

Hi Donald, Vimal,

I would guess the junk char is just because of UART sleep after idle.

A quick test is to send below when issue happened, and ideally app uart read should recover

stty -F /dev/ttyHS0 115200

Once confirmed, please consider using stty or below routine to keep UART active, to avoid entering this situation.

Problem with Reading UART

Which module are you using ? I remember in WP77 R8, the UART will go to sleep mode after some time. Maybe you can have a try on R9 FW. Or you can try using a timer to periodically wake up the UART; #define TIMER_INTERVAL_SEC 1 #define TIMER_INTERVAL_uSEC 100000 int fd1; static void tmrHandler(le_timer_Ref_t timerRef) { //LE_INFO(“INSIDE TIMER”); tcflow(fd1,TCION ); } COMPONENT_INIT { fd1=OpenPort("/dev/ttyHS0"); le_clk_Time_t clk = { .sec = TIMER_INTERVAL_SEC, .usec = TIMER_INT…

Thanks