sd_ppi_channel_xxx funtions

Question

Hello, I made a PWM with the TIMER2 of my nRF51822 (with the SoftDevice) and was working fine, till I read that I should not use the "NRF_PPI" functions and use the "sd_ppi_XXX". I change them in my code and the PWM doesn´t work. If I use my old configuration it still work. So my question is if I´m making something wrong, or I should continue using my old configuration? // Configure PPI channel 0 to toggle PWM_OUTPUT_PIN on every TIMER2 COMPARE[0] match err_code = sd_ppi_channel_assign( 0 , &NRF_TIMER2->EVENTS_COMPARE[1], &NRF_GPIOTE->TASKS_OUT[0]); // old // NRF_PPI->CH[0].EEP = (uint32_t)&NRF_TIMER2->EVENTS_COMPARE[1]; // old // NRF_PPI->CH[0].TEP = (uint32_t)&NRF_GPIOTE->TASKS_OUT[0]; // Configure PPI channel 1 to toggle PWM_OUTPUT_PIN on every TIMER2 COMPARE[1] match err_code = sd_ppi_channel_assign( 1 , &NRF_TIMER2->EVENTS_COMPARE[2], &NRF_GPIOTE->TASKS_OUT[0]); // old // NRF_PPI->CH[1].EEP = (uint32_t)&NRF_TIMER2->EVENTS_COMPARE[2]; // old // NRF_PPI->CH[1].TEP = (uint32_t)&NRF_GPIOTE->TASKS_OUT[0]; // Enable PPI channels 0-2 err_code = sd_ppi_channel_enable_set((PPI_CHEN_CH0_Enabled << PPI_CHEN_CH0_Pos) | (PPI_CHEN_CH1_Enabled << PPI_CHEN_CH1_Pos)); // old // NRF_PPI->CHEN = (PPI_CHEN_CH0_Enabled << PPI_CHEN_CH0_Pos) // old // | (PPI_CHEN_CH1_Enabled << PPI_CHEN_CH1_Pos); Thanks.

Audun · Accepted Answer

Hi Alvaro, 
 is the SoftDevice enabled when you call sd_ppi_x? If it is enabled those functions won't do anything, and possibly give you an error. 
 To see if you should use the SoftDevice functions or not you can do the following: 
 uint8_t softdevice_enabled;
uint32_t err_code;

err_code = sd_softdevice_is_enabled(&softdevice_enabled);
// Check error code

if (softdevice_enabled == 0)
{
 // Enable PPI using registers
}
else
{
 // Enable PPI using sd_ppi_x
}