//-----------------------------------------------------------------------------
/// Convert a digital value in milivolt
/// /param valueToconvert Value to convert in milivolt
//-----------------------------------------------------------------------------
static unsigned int ConvHex2mV( unsigned int valueToConvert )
{
return( (ADC_VREF * valueToConvert)/0x3FF);
}
#include <lpc17xx.h>
#include <uart.h>
void Delay (uint32_t Time)
{
uint32_t i;
i = 0;
while (Time--) {
for (i = 0; i < 5000; i++);
}
}
void main(){
SystemInit();
UART0_Init();
LPC_PINCON->PINSEL3 |= (3<<30); /* P1.31 is AD0.5 */
LPC_SC->PCONP |= (1<<12); /* Enable power to ADC block */
LPC_ADC->ADCR = (1<< 5) | /* select AD0.5 pin */
(4<< 8) | /* ADC clock is 25MHz/5 */
(1<<21); /* enable ADC */
while(1){
uint32_t adcResult;
LPC_ADC->ADCR |= (1<<24); /* start conversion */
while (!(LPC_ADC->ADGDR & (1UL<<31))); /* Wait for Conversion end */
adcResult=((LPC_ADC->ADGDR) >> 4) & (0xFFF); /* read converted value */
LPC_ADC->ADCR &= ~(7<<24); /* stop conversion */
UART0_SendChar(adcResult);
UART0_SendByte('\n');
Delay(1000);
}
}
دیدگاه