topic Re: UART Recieving Problem, IMX6Q ,SDK_Platform in i.MX Processors

UART Recieving Problem, IMX6Q ,SDK_Platform

khaledali — Mon, 15 Aug 2016 11:51:26 GMT

hi all,
i'm trying to run the i2c_test code imx6_sdk_platform but there is a problem in sending a character from my PC to UDOO board via uart to
choose which device
i want or exit the program
the i2c_test code locates at /sdk/driver/i2c/test

this is the segment of code that i'm trying to execute :

do {

printf("\n 1 - to perform a test with the i.MX6 as a master accessing an EEPROM.\n");

printf(" 2 - to perform a test with the i.MX6 as a slave device.\n");

printf(" x - to exit.\n\n");

do {

sel = uart_getchar(g_debug_uart_port);

} while (sel == NONE_CHAR);

if (sel == 'x') {

printf("\nTest exit.\n");

break;

}

if (sel == '1')

i2c_eeprom_at24cxx_test();

if (sel == '2')

i2c_imx6_slave_test();

} while(1);

//-----------------------------------------------------------------------------------------------------------------------

my program hangs at the inner do -while loop

do {

sel = uart_getchar(g_debug_uart_port);

} while (sel == NONE_CHAR);

i tried to send a character from minicom and putty and the same problem appears there is no action !!!!

Re: UART Recieving Problem, IMX6Q ,SDK_Platform

igorpadykov — Wed, 17 Aug 2016 10:03:13 GMT

Hi Khaled

after hang one can try to attach jtag and check uart regsiters, in particular

UARTx_URXD for errors.

Best regards

igor

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Re: UART Recieving Problem, IMX6Q ,SDK_Platform

aravinthkumarja — Wed, 17 Aug 2016 10:16:56 GMT

Hi Khaled,

Otherwise can you try manually,

1) Set the baudrate

=> stty -F /dev/ttymxc(UART no) 115200

2) If you want to send data

=> echo "ARAVINTH" > /dev/ttymxc(UART no)

3) If you want Receive Data

=> cat /dev/ttymxc(UART no)

Regards,

Aravinth

Re: UART Recieving Problem, IMX6Q ,SDK_Platform

khaledali — Wed, 17 Aug 2016 10:20:57 GMT

What if i haven't a jtag to check the registers ?

Re: UART Recieving Problem, IMX6Q ,SDK_Platform

khaledali — Wed, 17 Aug 2016 10:31:35 GMT

Hi aravinthkumar,

First thank u for your kind reply
I tried this trial 2 weeks ago and i couldn't send
let me ask u did you work with SDK v1.1 ?

Re: UART Recieving Problem, IMX6Q ,SDK_Platform

khaledali — Wed, 17 Aug 2016 10:33:48 GMT

Hi igorpadykov,
What if i haven't a jtag ?
i'm in need of SDK v1.1 support can you help me with this ?

Re: UART Recieving Problem, IMX6Q ,SDK_Platform

aravinthkumarja — Wed, 17 Aug 2016 10:38:24 GMT

Hi Khaled,

I'm not worked on SDK v1.1.

But i think UART same for all.

Regards,

Aravinth

Re: UART Recieving Problem, IMX6Q ,SDK_Platform

khaledali — Thu, 18 Aug 2016 07:00:33 GMT

Hi Aravinth,
So can you send me your UART driver what ever working with SDK or something else ?
and thank u in advance

Regrards,
Khaled

Re: UART Recieving Problem, IMX6Q ,SDK_Platform

aravinthkumarja — Thu, 18 Aug 2016 07:30:07 GMT

Hi,

In all kernel check inside below location:

driver/tty/

Regards,

Aravinth