Basic / Sample program for updating duty cycle (HET -> HalCogen -> CCS )

Hi,

  Here is a simple project I created. The HET program is generating a simple PWM with a 50% duty cycle PWM. In the application I try to change the duty cycle to 60% and then to 70%. See below.

; PWM with synchronous duty cycle update at compare match event
L00 CNT     {  reg=A, irq=OFF, max= 100 }
L01 ECMP   {  next=L03, cond_addr=L02, en_pin_action=ON, pin=0, action=PULSELO, reg=A, data= 50, hr_data=0}
L02 MOV32 { remote=L01, type=IMTOREG&REM, reg=NONE, data=50, hr_data=0} ; CPU to write to this data field
L03 BR        { next= L00, cond_addr=L00, event= NOCOND }

void main(void)
{
/* USER CODE BEGIN (3) */

	int i = 0;

	hetInit();

	hetRAM1->Instruction[L02].Data = 60 << 7; // Change the duty cycle to 60%

	for (i=0; i<10000000;i++);

	hetRAM1->Instruction[L02].Data = 70 << 7; // Change the duty cycle to 70%

	while(1);


/* USER CODE END */
}

You can use the scope to see the PWM on NHET[0] pin.

Here is the project.

3021.simple_PWM.zip

Hello,

I'm going though your program. I need more time to understand it well.

I wanted to execute same program with only 1 change - I changed  the o/p pin to '1' instead of pin '0' . I'm getting declaration problem in het.c file.This is my error  - 

Description Resource Path Location Type
#148 declaration is incompatible with "void edgeDisableNotification(uint32)" (declared at line 657 of "C:/myWorkspace/duty/include/het.h") het.c /duty/source line 738 C/C++ Problem 

for many kind of these functions

Regards,

Suyog

5228.duty.rar

Hello, 

Yes,  I had  made lots of changes and didn't go well. Here again, I am creating the project from scratch and  facing few issues

1. Without  writing a single line of code, I'm getting error -
   
   error #10056: symbol "HET_INIT0_PST" redefined: first defined in "./duty1.obj"; redefined in "./source/duty1.obj"
   
   
2. Declaration part - I found in reg_het.h your case while in case of mine it is in het.h
   Do I have to do this explicitly?

typedef volatile struct hetInstructionBase
{
    uint32 Program;
    uint32 Control;
    uint32 Data;
    uint32   rsvd1;
} hetINSTRUCTION_t;


/** @struct hetRamBase
*   @brief HET RAM Definition
*
*   This structure is used to access the HET RAM.
*/
/** @typedef hetRAMBASE_t
*   @brief HET RAM Type Definition
*
*   This type is used to access the HET RAM.
*/
typedef volatile struct het1RamBase
{
    hetINSTRUCTION_t Instruction[160U];
} hetRAMBASE_t;

 3.   As per my  generated code -

    hetSIGNAL_t capGetSignal(uint32 cap);

  As  per your code 

    void capGetSignal(hetRAMBASE_t * hetRAM, uint32 cap, hetSIGNAL_t *signal);

Again is it explicit declaration ?

4. Is there any tutorial to work from scratch  ? Its been problematic for me to understand it well. I am going through section 3 of  this doc   .

Regards,

Suyog

1682.duty1.rar

Hello, 

Finally sorted out with the issue with debugging. 

I am few queries stated in comments-

When I executing the code -

}

Hi Suyog,

  That is not how the code was written on the application side. I simply change from 60% to 70% and then end. You can easily modify the code to repeat between 60-70% by putting the them in a loop.