adding pwm to ble_template

[Stas]

Hello everyone! I'm very shy to ask probably a stupid question, but... I'm trying get abitity to change pwm signal via ble. I've created service, characteristic, then I try to add some code from pwm_library example but Keil doesn't like my idea to add APP_PWM_INSTANCE(PWM1, 2) the error is ......\main.c(105): error: #20: identifier "TIMER0_ENABLED" is undefined I understand that timer I'm gonna use for pwm (TIMER 1 I think) is disabled. I've tried change in sdk_config.h

define TIMER1_ENABLED 0 to define TIMER1_ENABLED 1 but nothing change.

[Jørgen Holmefjord]

Did you also set #define TIMER_ENABLED 1 in sdk_config.h?

[Stas]

Thank you. It's worked now. but I have such errors:

._build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol app_pwm_channel_duty_set (referred from main.o). ._build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol app_pwm_enable (referred from main.o). ._build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol app_pwm_init (referred from main.o).strong text

app_pwm.c added to nrf_library

[Jørgen Holmefjord]

Did you enable app_pwm in sdk_config.h? #define APP_PWM_ENABLED 1

[Stas]

Thanks a lot. I didn't know about sdk_config things). After I write new value to my characteristic (from nrf_connect app) how can I refer to that written value from main.c for adding to pwm set function? Should I create new extern variable in pwm_service.h file?

[Jørgen Holmefjord]

On a write to the characteristic, you will get a BLE_GATTS_EVT_WRITE event in the BLE event handler for your service. Here you can handle the newly received value and assign it to the PWM interface. Have a look at the ble_app_uart example, especially the ble_nus_on_ble_evt() and on_write() functions in ble_nus.c file, to get an idea how this can be handled.