Other Parts Discussed in Thread: EK-TM4C123GXL
Hi Team,
We would like to ask your help regarding our customer's inquiry below.
int main(void)
{
unsigned int array[4];
//Set clock to 16 MHz
SysCtlClockSet(SYSCTL_SYSDIV_10 | SYSCTL_USE_PLL | SYSCTL_OSC_INT | SYSCTL_XTAL_16MHZ);
// Enable the GPIOE peripheral
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
// Enable the ADC0 module.
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);
// Wait for the GPIOE module to be ready.
InitConsole();
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_GPIOE))
{
}
// Wait for the ADC0 module to be ready.
//
while(!SysCtlPeripheralReady(SYSCTL_PERIPH_ADC0))
{
}
//Configures ADC pins PE3 (AIN0) and PE2 (AIN1)
GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_3 | GPIO_PIN_2);
//Configure ADC functions
// Using Sequence 1 which has a 4 entry FIFO
ADCSequenceConfigure(ADC0_BASE, 1, ADC_TRIGGER_PROCESSOR, 0);
ADCSequenceStepConfigure(ADC0_BASE, 1, 0, ADC_CTL_CH0 );
ADCSequenceStepConfigure(ADC0_BASE, 1, 1, ADC_CTL_CH1 | ADC_CTL_IE | ADC_CTL_END);
ADCSequenceEnable(ADC0_BASE,1);
ADCIntClear(ADC0_BASE, 1);
ADCClockConfigSet(ADC0_BASE, ADC_CLOCK_SRC_PIOSC | ADC_CLOCK_RATE_FULL, 1);
while(1)
{
ADCProcessorTrigger(ADC0_BASE, 1);
//wait for the conversion to be completed
while(!ADCIntStatus(ADC0_BASE, 1, false))
{
}
//clear Interrupt flag
ADCIntClear(ADC0_BASE, 1);
//Read ADC input and store PE3 in array[0], PE2 in array[1]
ADCSequenceDataGet(ADC0_BASE, 1, array); //read the analog values
UARTprintf("\rADC_CTL_CH0 - > %d , ADC_CTL_CH1 - > %d", array[0],array[1]);
SysCtlDelay(SysCtlClockGet() / 10 / 3);
SysCtlDelay(SysCtlClockGet() / 10 / 3);
SysCtlDelay(SysCtlClockGet() / 10 / 3);
SysCtlDelay(SysCtlClockGet() / 10 / 3);
SysCtlDelay(SysCtlClockGet() / 10 / 3);
}
}
