UART debug logging

RE: UART debug logging

hawk — Sat, 14 Nov 2015 07:45:43 GMT

hi, all: the code of SDK9.0, simple uart example and app_trace_init/ app_trace_log are the same after i check the code. why i get error message log, please add some time delay in the loop. ererything is OK. ..

RE: UART debug logging

hawk — Sat, 14 Nov 2015 03:42:53 GMT

hi,stian:

when i test uart simple example, all is OK.. but when i test using app_trace_init() and app_trace_log(), i has the same question.. I can only get garbage characters...

int main(void) {

app_trace_init();

while (1) {

app_trace_log("a==B++\r\n"); }

}

but the log messages are: +B=aaB==a+==a

configuration: pca10028, APP_UART_FLOW_CONTROL_DISABLE, 38400,

and I change to use app_uart_fifo.c for app_uart. and test again, the following is the result:

the log messages are:

Ba+=+=

RE: UART debug logging

Shubham Kumar Mishra — Mon, 01 Jun 2015 12:50:37 GMT

As I want to debug using Hyperterminal But always got garbage values...... I also tried 9600 Baud rate and it executed few values well than after again started with garbage values. PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPppppppppppppp1PPPPPPPPPPPPPPPPPPPPPPPPPPPPPP PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP this is something.

RE: UART debug logging

Marius Heil — Fri, 28 Nov 2014 13:01:05 GMT

Hello,

thanks a lot. I managed to get UART working by building upon the simple_uart driver. I had a modified example, maybe that was the Problem. I managed to get another sample working by using 19200 baud rate and most of the time, RTS/CTS works for me. Most of the time, it boils down to searching in the code for the places where the UART interface is started. I am only starting the development and I have a hard time finding the right documentation. Most of the time it's somewhere, but I cannot find it :-)

RE: UART debug logging

Stian Røed Hafskjold — Thu, 27 Nov 2014 08:15:32 GMT

Looks like app_trace_init() sets the baud rate to 115200 by default. But notice the #ifdef ENABLE_DEBUG_LOG_SUPPORT in this file. You should define this under the "C/C++" fan in options.

I could get it to work with the ble_app_hrs_c_s120_pca10031 example. My settings were:

Putty
115200
8 data bits
1 stop bit
No parity
xon/xoff flow control

Did you try with an example without modifying it? Which SDK are you using?