ret_code_t nrf_drv_csense_sample(void) { ASSERT(m_csense.module_state == NRF_DRV_STATE_POWERED_ON); if(m_csense.adc_channels_input_mask != 0) { if(m_csense.channels_to_read == 0) { #if USE_COMP == 0 && defined(SAADC_PRESENT) nrf_saadc_enable(); #endif if(nrf_drv_csense_is_busy() == true) { return NRF_ERROR_BUSY; } m_csense.busy = true; m_csense.channels_to_read = m_csense.adc_channels_input_mask; calculate_next_channel(); } #if USE_COMP if (!m_csense.timers_powered_on) { nrf_drv_timer_enable(&m_timer0); nrf_drv_timer_enable(&m_timer1); m_csense.timers_powered_on = true; } else { nrf_drv_timer_resume(&m_timer0); nrf_drv_timer_resume(&m_timer1); } nrf_drv_comp_pin_select((nrf_comp_input_t)m_csense.cur_chann_idx); nrf_drv_comp_start(0, 0); #else ret_code_t err_code; #ifdef ADC_PRESENT adc_channel.config.config.ain = (nrf_adc_config_input_t)(1<<m_csense.cur_chann_idx); nrf_gpio_pin_clear(m_csense.output_pin); err_code = nrf_drv_adc_sample_convert(&adc_channel, NULL); #elif defined(SAADC_PRESENT) saadc_channel.pin_p = (nrf_saadc_input_t)(m_csense.cur_chann_idx + 1); nrf_saadc_channel_input_set(0, saadc_channel.pin_p, NRF_SAADC_INPUT_DISABLED); nrf_gpio_pin_clear(m_csense.output_pin); err_code = nrf_drv_saadc_sample(); #endif //ADC_PRESENT if(err_code != NRF_SUCCESS) { return err_code; } #endif //USE_COMP } return NRF_SUCCESS; }
uint16_t analogin_read_u16(analogin_t *obj) { nrf_adc_value_t adc_value; nrf_drv_adc_channel_t adc_channel; // initialization by assigment because IAR dosen't support variable initializer in declaration statement. adc_channel.config.config.resolution = NRF_ADC_CONFIG_RES_10BIT; adc_channel.config.config.input = NRF_ADC_CONFIG_SCALING_INPUT_ONE_THIRD; adc_channel.config.config.reference = NRF_ADC_CONFIG_REF_VBG; adc_channel.config.config.ain = (obj->adc_pin); adc_channel.p_next = NULL; ret_code_t ret_code; ret_code = nrf_drv_adc_sample_convert( &adc_channel, &adc_value); MBED_ASSERT(ret_code == NRF_SUCCESS); return adc_value; }