/// \method read() /// Read the value on the analog pin and return it. The returned value /// will be between 0 and 4095. STATIC mp_obj_t adc_read(mp_obj_t self_in) { pyb_adc_obj_t *self = self_in; uint32_t sample; // wait until a new value is available while (!MAP_ADCFIFOLvlGet(ADC_BASE, self->channel)); // read the sample sample = MAP_ADCFIFORead(ADC_BASE, self->channel); // the 12 bit sampled value is stored in bits [13:2] return MP_OBJ_NEW_SMALL_INT((sample & 0x3FFF) >> 2); }
uint16_t readBISEN(void) { unsigned long sample = 0; /* ADC measurement */ if(MAP_ADCFIFOLvlGet(ADC_BASE, BISENx)) { sample = MAP_ADCFIFORead(ADC_BASE, BISENx); sample = sample >> 2; sample &= 0x0FFF; } return (uint16_t)(sample); }
void adc (void){ unsigned long ulSample; unsigned int uiChannel; unsigned int uiIndex=0; while(uiIndex < NO_OF_SAMPLES + 4) { if(MAP_ADCFIFOLvlGet(ADC_BASE, uiChannel)) { ulSample = MAP_ADCFIFORead(ADC_BASE, uiChannel); pulAdcSamples[uiIndex++] = ulSample; // Fill data sample buffer } } }
//***************************************************************************** // //! main - calls Crypt function after populating either from pre- defined vector //! or from User //! //! \param none //! //! \return none //! //***************************************************************************** void main() { unsigned long uiAdcInputPin; unsigned int uiChannel; unsigned int uiIndex=0; unsigned long ulSample; // // Initialize Board configurations // BoardInit(); // // Configuring UART for Receiving input and displaying output // 1. PinMux setting // 2. Initialize UART // 3. Displaying Banner // PinMuxConfig(); InitTerm(); DisplayBanner(APP_NAME); while(FOREVER) { // // Initialize Array index for multiple execution // uiIndex=0; // // Read inputs from user // if(!ReadFromUser(&uiAdcInputPin)) { UART_PRINT("\n\rInvalid Input. Please try again. HAHAHAHAHAHAHAHAHA\n\r"); continue; } #ifdef CC3200_ES_1_2_1 // // Enable ADC clocks.###IMPORTANT###Need to be removed for PG 1.32 // HWREG(GPRCM_BASE + GPRCM_O_ADC_CLK_CONFIG) = 0x00000043; HWREG(ADC_BASE + ADC_O_ADC_CTRL) = 0x00000004; HWREG(ADC_BASE + ADC_O_ADC_SPARE0) = 0x00000100; HWREG(ADC_BASE + ADC_O_ADC_SPARE1) = 0x0355AA00; #endif // // Pinmux for the selected ADC input pin // MAP_PinTypeADC(uiAdcInputPin,PIN_MODE_255); // // Convert pin number to channel number // switch(uiAdcInputPin) { case PIN_58: uiChannel = ADC_CH_1; break; case PIN_59: uiChannel = ADC_CH_2; break; case PIN_60: uiChannel = ADC_CH_3; break; default: break; } // // Configure ADC timer which is used to timestamp the ADC data samples // MAP_ADCTimerConfig(ADC_BASE,2^17); // // Enable ADC timer which is used to timestamp the ADC data samples // MAP_ADCTimerEnable(ADC_BASE); // // Enable ADC module // MAP_ADCEnable(ADC_BASE); // // Enable ADC channel // MAP_ADCChannelEnable(ADC_BASE, uiChannel); while(uiIndex < NO_OF_SAMPLES + 4) { if(MAP_ADCFIFOLvlGet(ADC_BASE, uiChannel)) { ulSample = MAP_ADCFIFORead(ADC_BASE, uiChannel); pulAdcSamples[uiIndex++] = ulSample; } } MAP_ADCChannelDisable(ADC_BASE, uiChannel); uiIndex = 0; //UART_PRINT("\n\rTotal no of 32 bit ADC data printed :4096 \n\r"); //UART_PRINT("\n\rADC data format:\n\r"); //UART_PRINT("\n\rbits[13:2] : ADC sample\n\r"); //UART_PRINT("\n\rbits[31:14]: Time stamp of ADC sample \n\r"); // // Print out ADC samples // while(uiIndex < NO_OF_SAMPLES) { UART_PRINT("\n\rVoltage is %f\n\r",(((float)((pulAdcSamples[4+uiIndex] >> 2 ) & 0x0FFF))*1.4)/4096); uiIndex++; } //UART_PRINT("\n\rVoltage is %f\n\r",((pulAdcSamples[4] >> 2 ) & 0x0FFF)*1.4/4096); UART_PRINT("\n\r"); } }