Tool/software: TI C/C++ Compiler
I am using the launchxl2-570lc43 and developing with Halcogen and CCS.
I followed the example_EPWM_ADC from Halcogen with the exception that I utilized AD1IN_6 (which is connected to a potentiometer) as the input.
I also added some code to test the value of the ADC and light an LED.
I am able to use the pot to adjust the PWM duty cycle while monitoring on an oscope.
I have observed a strange behavior on the nError LED.
Executions starts with no nError LED on.
When I adjust the duty cycle and the IF condition toggles, the nError LED comes on and stays on beyond that point.
This happens when I start from a high value and descend or a low value and ascend.
What might this error be related to and how can I prevent it from throwing the flag?
Here is the code I used in CCS:
/* USER CODE BEGIN (0) */
/* USER CODE END */
/* Include Files */
#include "HL_sys_common.h"
/* USER CODE BEGIN (1) */
#include "HL_etpwm.h"
#include "HL_adc.h"
#include "HL_gio.h"
/* USER CODE END */
/** @fn void main(void)
* @brief Application main function
* @note This function is empty by default.
*
* This function is called after startup.
* The user can use this function to implement the application.
*/
/* USER CODE BEGIN (2) */
/* USER CODE END */
int main(void)
{
/* USER CODE BEGIN (3) */
_enable_interrupt_();
adcInit();
etpwmInit();
gioInit();
adcEnableNotification(adcREG1, adcGROUP0);
adcStartConversion(adcREG1, adcGROUP0);
while(1);
/* USER CODE END */
return 0;
}
/* USER CODE BEGIN (4) */
void adcNotification(adcBASE_t *adc, uint32 group)
{
adcData_t data;
uint32 count;
uint16 cmpA;
count = adcGetData(adcREG1, adcGROUP0, &data);
cmpA = (etpwmREG1->TBPRD * data.value)/0xFFF;
etpwmSetCmpA(etpwmREG1, cmpA);
if(data.value>=1000){
gioSetBit(gioPORTB, 6,1);
}
else{
gioSetBit(gioPORTB, 6,0);
}
}
/* USER CODE END */
