Undefined symbol error when adding Simple_timer to uart example in Keil

[claudea159]

When I add a PWM or simple timer to a uart example I get the error in Keil.

Simple timer: I added app_simple_timer.c to the library, I added the #include "app_simple_timer.h" and I added the path to the Project Options.

My code is very simple:

// Initialize timer
   uint32_t err_code1 = app_simple_timer_init();
    APP_ERROR_CHECK(err_code1);
	// start timer for PWM 
   err_code = app_simple_timer_start(APP_SIMPLE_TIMER_MODE_REPEATED, PWM_timer_handler, 50000, NULL);
    APP_ERROR_CHECK(err_code);

I have the same problem with the PWM_Library.

Thanks

[claudea159]

Hello,

I decided to try the App_timer instead. Before compiling it, I reloaded the SDK and substituted my main.c in the ble_peripheral uart example. I followed the app_timer tutorial and got everything to compile and link. I noticed that things have changed since the tutorial, app_timer_init() has no arguments. 

Before closing the ticket, is there a tutorial on the sdk_config?

Thanks

Claude

[Mttrinh]

Hi,

Unfortunately, we do not have a tutorial or a blog post about sdk_config.

[adragocelestica]

Hi,

When possible, it would be really useful to have a tutorial for sdk_config. It can be quite confusing to realize what is and is not present on each version of the file, and copying and pasting defines between files feels...wrong.

Also, something even better than a tutorial would be a wizard where one chooses what to use, and the wizard would generate the sdk_config file with all the defines.

[Mttrinh]

Hi,

There already are a configuration wizard, where you can choose what to use and what is already enabled, in Keil. Go to sdk_config.h file in Keil -> at the bottom beside "Text Editor", there is a tab called " Configuration Wizard".