I have tried to combine two different example code. I intend to measure my sensor value so I used ADC example code (msp430x09x_apool_adc_07.c ). It works fine. After reading my sensor value, I wanted to measure built-in temperature sensor value. Although I used example code ( msp430x09x_apool_adc_06.c APOOL_ADC, Sampled Temperature and Convert to oC), it couldn't measure temperature sensor value. I considered that clear the ADC register APINT = 0x00; // Clear ADC-DAC-REG after measuring my sensor value but there is no change. I got result for temperature sensor that is DegC=3 or 5. First, I want to measure my sensor value and then built-in temperature sensor value respectively.
I don't want to measure my sensor value and built-in temperature sensor value at the same time.
I have tried to debug with IAR Embedded Workbench via MSP-FET FLASH EMULATION TOOL and MSP-TS430L092 Target Board.
I put my code below.
#include <msp430.h>
int ChannelA2;
int Result;
volatile short int DegC;
int main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
// Begin Configuration of the A-POOL registers
APCTL = 0; // Clear APCTL register
APCNF = CMPON+DBON+CONVON+EOCBU+APREFON+CLKSEL_MCLK; // Configure A-POOL elements, Select MCLK as A-POOL Clock Source
APINT = 0x00; // Clear ADC-DAC-REG
APVDIV=A2DIV_1;
APIE |= EOCIE; // Enable Interrupt for End of Conversion
APTRIM = REFTSEL;
APVDIV = TMPSEN; // Enable Temperature Sensor
P1DIR|=BIT4;
while(1)
{
APIE = EOCIE; // Enable Interrupt for End of Conversion
APINT = 0x00; // Clear ADC-DAC-REG
APCTL = OSEL+CBSTP+RUNSTOP+APNSEL_2+APPSEL_5; // Set Channels and Start Conversion
__bis_SR_register(LPM0_bits + GIE); // Enter LPM0 w/ interrupts enabled
ChannelA2 = APINT; // Get Result for A2
if(ChannelA2 >85){
APCTL = OSEL+ODEN+OSWP+APPSEL_4+APNSEL_5; // Set Channels and Start Conversion--+ODEN+
APINT = 0x00; // Clear ADC-DAC-REG
APIFG = 0;
APCTL |= CBSTP+SBSTP+RUNSTOP;
__bis_SR_register(LPM0_bits + GIE); // Enter LPM0 w/ interrupts enabled
Result = APINT;
DegC =(((Result-179)*125)/58) + 30; // Refer to datasheet for accuracy and offset specs
if(DegC>18 && DegC<30){
P1OUT|=BIT4;
}
}
else{
}
__no_operation(); // Place breakpoint here
}
}
//A_POOL Interrupt Service Routine
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=APOOL_VECTOR
__interrupt void A_POOL(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(APOOL_VECTOR))) A_POOL (void)
#else
#error Compiler not supported!
#endif
{
APIFG = 0; // Clear Interrupt Flag
__bic_SR_register_on_exit(LPM0_bits); // Exit Active to Sample next Channel
}
Please help me to fix mistakes
