Content originally posted in LPCWare by audriusmerfeldas on Mon Oct 19 14:45:46 MST 2015
My LPC1115 freezes at the line:
"while ((LPC_ADC->DR[1] < 0x7FFFFFFF)); //wait for "done" bit to be set" or sometimes on:
"while ((LPC_ADC->DR[2] < 0x7FFFFFFF)); //wait for "done" bit to be set".
Any advices?
Please find the code bellow:
//SET UP THE ADC
LPC_SYSCON->PDRUNCFG &= ~(0x1<<4); //power the ADC
LPC_SYSCON->SYSAHBCLKCTRL |= (1<<13); //enable clock for ADC
LPC_IOCON->R_PIO0_11 &= 0xFFFFFF78; //clear FUNC field for pin 32, set to analog input
LPC_IOCON->R_PIO1_0 &= ~(0x97); //clear FUNC field for pin 33, set to analog input
LPC_IOCON->R_PIO1_1 &= ~(0x97); //clear FUNC field for pin 34, set to analog input
LPC_IOCON->R_PIO0_11 |= (1<<1); //set to ADC mode for pin 32
LPC_IOCON->R_PIO1_0 |= (1<<1); //set to ADC mode for pin 33
LPC_IOCON->R_PIO1_1 |= (1<<1); //set to ADC mode for pin 34
LPC_IOCON->R_PIO0_11 &= ~(0x10); //turn off pull up
LPC_IOCON->R_PIO1_0 &= ~(0x10); //turn off pull up
LPC_IOCON->R_PIO1_1 &= ~(0x10); //turn off pull up
while (1) // Loop forever
{
LPC_ADC->CR = 0x0B01; //select ADC channel AD0 (pin 32), set up clock
LPC_ADC->CR |= (1<<24); //start conversion by setting "Start Conversion Now" bit
while ((LPC_ADC->DR[0] < 0x7FFFFFFF)); //wait for "done" bit to be set
x=(LPC_ADC->DR[0]);
LPC_ADC->CR = 0x0B02; //select ADC channel AD1 (pin 33), set up clock
LPC_ADC->CR |= (1<<24); //start conversion by setting "Start Conversion Now" bit
while ((LPC_ADC->DR[1] < 0x7FFFFFFF)); //wait for "done" bit to be set
y=(LPC_ADC->DR[1]);
LPC_ADC->CR = 0x0B04; //select ADC channel AD2 (pin 34), set up clock
LPC_ADC->CR |= (1<<24); //start conversion by setting "Start Conversion Now" bit
while ((LPC_ADC->DR[2] < 0x7FFFFFFF)); //wait for "done" bit to be set
z=(LPC_ADC->DR[2]);
