Hi, i am disabling ppi channel so that my adc should stop working(i am taking data from 3-axis accelerometer), this process i am doing by pressing button(bsp_event_handler) and after disabling i am sending some data to other function. Some time it stuck..(now i have to reset board to work again),uptil now what i have recovered is that before disabling ppi an adc_event is generated and it is not returning back.
i need continous Adc data so in adc_event_handler I am calling nrf_drv_adc_buffer_convert(adc_buffer,ADC_BUFFER_SIZE) so that adc will be ques: is this a safe way to do it.
code for adc event handler is below:
static void adc_event_handler(nrf_drv_adc_evt_t const * p_event)
{
uint8_t adc_result[ADC_BUFFER_SIZE*2];
float gvalue = 0.0;
int16_t uartDecimal_result;
if (p_event->type == NRF_DRV_ADC_EVT_DONE)
{
if(PRINT_DEBUG) {
NRF_LOG_PRINTF("\n");
NRF_LOG_PRINTF("{");
}
for (uint8_t i = 0; i < p_event->data.done.size; i++)
{
Decimal_result = p_event->data.done.p_buffer[i];
if(PRINT_DEBUG){
NRF_LOG_PRINTF("%d,",Decimal_value);
}
if(PRINT_DEBUG) {
NRF_LOG_PRINTF("},");
}
adc_event_counter++;
APP_ERROR_CHECK(nrf_drv_adc_buffer_convert(adc_buffer,ADC_BUFFER_SIZE));
LEDS_INVERT(BSP_LED_3_MASK);
/** concerned part is nrf_drv_adc_convert**/ and this is how i assign adc to ppi
nrf_drv_ppi_channel_assign(m_ppi_channel, timer_compare_event_addr, adc_sample_event_addr);
where sadc_sample_event_handler is nrf_drv_adc_start_task_get()
enabling and disabling of adc is handled by buttons,nrf_drv_ppi_channel_enable and disable....
Qusestion: i need button implementation, by pressing button adc should be disabled and i can send testdata to other function. how this can be implemented?.
