I added user module PWM8 3 times

PWM1, PWM2,PWM3

I wrote following code

typedef void (* const Function_Pass_Char)(char i);

static Function_Pass_Char SET_PWM[] = {
    &PWM1_WritePulseWidth,
    &PWM2_WritePulseWidth,
    &PWM3_WritePulseWidth,
}

void main(void){

SET_PWM[0](50);

}

code compiles fine, but the PWM(Pulsewidth value is not passed into A when calling the asm function

 PWM1_WritePulseWidth:
_PWM1_WritePulseWidth:
   RAM_PROLOGUE RAM_USE_CLASS_1
   mov   reg[PWM1_COMPARE_REG], A                          using debug window register shows different value!!!???? not(0x32)
   RAM_EPILOGUE RAM_USE_CLASS_1
   ret
 

Any ideas???

 I tried the code snippet which you have provided and debugged the assembly code generated by the compiler. This is a compiler bug because when the function is called the values are always passed in A or X register but in the implementation of this routine the value is stored in stack. Thus, the code is not working as my function is taking the value of A and write into period register.

I have reported this problem to Imagecraft.

Best regards,

Pushek

I had a similar problem, and solved by using the code keyword as follows:

// Function pointer to PWM writes
code void (code *pwm_ptr[])(uint8 compare) =
{
	PWM_1_WriteCompare,
	PWM_2_WriteCompare,
	PWM_3_WriteCompare
};


void main()
{
	(*pwm_ptr[0])(50);
}