/// \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");
}
}
