CCS/MSP430F6736: No source available for "0x21008"

Gaurav Kumar44 said:

#pragma vector = SD24B_VECTOR
ISR(SD24B, adc_interrupt)
{
signed short int SD24BSample[2], noofsamples=0;
/*Raw Samples*/
SD24BSample[0] = (signed short int)SD24BMEMH0;
SD24BSample[1] = (signed short int)SD24BMEMH1;
noofsamples++;
}

I looked at the assembler generated by the TI v16.9.2.LTS compiler for that code. A function named ISR was created which was registered as the handler for the SD24_B interrupt source. However, the ISR function ended with a RETA instruction. For the correct operation of an interrupt handler the function must end with a RETI (return from interrupt) instruction. The fact that the function ended with a RETA instruction explains the crash on return from the function.

Instead try the following method to defined the interrupt handler by using the __interrupt qualifier, which is that the MSP430ware examples do. I checked the generated assembler and the function ends with the expected RETI instruction:

#pragma vector = SD24B_VECTOR
__interrupt void SD24BISR(void)
{
    signed short int SD24BSample[2], noofsamples=0;
    /*Raw Samples*/
    SD24BSample[0] = (signed short int)SD24BMEMH0;
    SD24BSample[1] = (signed short int)SD24BMEMH1;
    noofsamples++;
}