CCS/MSP430F6736: printf support-output display

Keval,

I will answer the easy part first.  You are looking at the build options for a specific file (main.c) and not the project so you will not see linker options.  To see the options for the project select the project in Project Explorer and then right click and select properties.

As far as the "Library Function Assumptions" section being blank I see the same.  I am not sure what is going on there but it certainly looks like an issue.  You can change the option in another way.

Go to the properties for the project.  Select the MSP430 Compiler node in the tree on the left.

Then click on the Edit Flags button.  This will allow you to edit the options manually.  In general the option --printf_support=minimal is set for MSP430.

I would be surprised if that option was not already set as we set it by default when creating a new project.

Have you added printf's to your code and having issues getting it to work?

If you go to Project -> New CCS Project

Choose your device

Select the Hello world template

Does that work?

I suspect that you need to increase your heap size.

Regards,

John

Yes, I have used printf commands in my program but I am not getting values displayed on the console.
I tried the "Hello World" template but even that didn't work.
I tried changing the printf support to full from minimal, but even then I was not able to get the output displayed.

I will see if I can track down an MSP430F673x device. I have tried out the template on other MSP430s and it works fine.

Printf support would be set to minimal by default in the hello world template.

I have not be able to locate an MSP430F673x device. If you set a breakpoint on the line that has the printf and run does it run to that line and halt?

The hello world template worked when I put a breakpoint on that line.
However I am not able to print values of the ADC conversion result.

I am using the following example code:

#include <msp430.h>

unsigned int ADC_Result;

int main(void)
{
WDTCTL = WDTPW | WDTHOLD; // Stop WDT


// Setup P1.2 for A0
P1SEL |= BIT2; // Set P1.2 to non-IO
__disable_interrupt(); // Disable interrupts; Port Map cnfg
PMAPKEYID = PMAPKEY; // Enable access Port Mapping regs
P1MAP2 = PM_ANALOG; // Enable A0
PMAPKEYID = 0; // Disable access Port Mapping regs
__enable_interrupt(); // Re-enable all interrupts
P1DIR |= BIT0; // Set P1.0 to output direction
P1OUT &= ~BIT0; // Clear P1.0

// By default, REFMSTR=1 => REFCTL is used to configure the internal reference
while (REFCTL0 & REFGENBUSY) ; // If ref generator busy, WAIT
REFCTL0 |= REFVSEL_0 | REFON; // Select internal ref = 1.5V
// Internal Reference ON
// Setup ADC10
ADC10CTL0 = ADC10SHT_2 | ADC10ON; // S&H=16 ADC clks, Enable ADC10
ADC10CTL1 |= ADC10SHP; // ADCCLK = MODOSC; sampling timer
ADC10CTL2 |= ADC10RES; // 10-bit conversion results
ADC10IE |= ADC10IE0; // Enable ADC conv cmplete interrupt
ADC10MCTL0 |= ADC10INCH_0 | ADC10SREF_1; // A0 ADC input select; Vref=1.5V

// Configure TA0 to provide delay for reference settling ~75us
TA0CCR0 = 80; // Delay to allow Ref to settle
TA0CCTL0 |= CCIE; // Compare-mode interrupt.
TA0CTL = TASSEL_2 | MC_1; // TACLK = SMCLK, Up mode.
__bis_SR_register(LPM0_bits | GIE); // Enter LPM0 w/ interrupt
TA0CCTL0 &= ~CCIE; // Disable timer interrupt

while (1)
{
__delay_cycles(5000); // Delay between conversions

ADC10CTL0 |= ADC10ENC | ADC10SC; // Sampling and conversion start

__bis_SR_register(LPM0_bits | GIE); // Enter LPM0 w/ interrupt
__no_operation(); // For debug only

if (ADC_Result > 0x0100) // ADC10MEM = A0 > 0.5V?
{
P1OUT |= 0x01; // Clear P1.0 LED off
printf("ADC result: %d\n",ADC_Result);
}
else
{
P1OUT &= ~0x01; // Set P1.0 LED on
printf("ADC result: %d\n",ADC_Result);
}
}
}

// ADC10 interrupt service routine
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=ADC10_VECTOR
__interrupt void ADC10_ISR(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(ADC10_VECTOR))) ADC10_ISR (void)
#else
#error Compiler not supported!
#endif
{
switch (__even_in_range(ADC10IV, 12))
{
case ADC10IV_NONE: break; // No interrupt
case ADC10IV_ADC10OVIFG: break; // conversion result overflow
case ADC10IV_ADC10TOVIFG: break; // conversion time overflow
case ADC10IV_ADC10HIIFG: break; // ADC10HI
case ADC10IV_ADC10LOIFG: break; // ADC10LO
case ADC10IV_ADC10INIFG: break; // ADC10IN
case ADC10IV_ADC10IFG: // ADC10
ADC_Result = ADC10MEM0; // Store ADC10 channel 0 result
__bic_SR_register_on_exit(LPM0_bits); // Exit LPM0 on return
break;
default: break;
}
}

#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=TIMER0_A0_VECTOR
__interrupt void TA0_ISR(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(TIMER0_A0_VECTOR))) TA0_ISR (void)
#else
#error Compiler not supported!
#endif
{
TA0CTL = 0; // Reset TA0
__bic_SR_register_on_exit(LPM0_bits); // Exit LPM0 on return
}

I want to print the conversion result of the ADC. I tried putting the printf command but it didn't work.
I also put breakpoints on the two lines but no success.
Could you help me out with this?

Thank you.

Thank you John for the help.

Appreciate it.

No problem