His,
I am trying to get quadrature encoder counts using the TMS570LS04HDK. I've tried everything I can think of, but I still cannot read any data from it. I am enable to initialize it to a value I want, but nothing but QCTMR and QCTMRLAT actually change during normal run operation. I have attached the project in hopes someone can point out a silly error I made somewhere. The code is taken pretty much directly from the HalCoGen example:
/* USER CODE BEGIN (2) */
#define UNIT_POSITION_X 60U
/* USER CODE END */
void main(void)
{
/* USER CODE BEGIN (3) */
uint16 deltaT = 0U;
float velocity = 0U;
int count = 0;
/* EQEP initialization based on GUI Configuration. */
QEPInit();
/* Enable Position Counter */
eqepEnableCounter(eqepREG1);
/* Enable Unit Timer. */
eqepEnableUnitTimer(eqepREG1);
/* Enable capture timer and capture period latch. */
eqepEnableCapture(eqepREG1);
eqepREG1->QEPCTL |= 0xC000;
while(1)
{
eqepBASE_t encoder = * eqepREG1;
/* Status flag is set to indicate that a new value is latched in the QCPRD register. */
if((eqepREG1->QEPSTS & 0x80U) !=0U)
{
/* Elapsed time between unit position events */
deltaT = eqepREG1->QCPRD;
count = eqepReadPosnCount(eqepREG1);
/* Calculate Velocity from deltaT and the value of the unit position. */
/* The value of Unit Position is a sample value and should be changed by the User as per the actual value in the UNIT_POSITION_X macro above. */
velocity = (float)(UNIT_POSITION_X/deltaT);
/* Clear the Status flag. */
eqepREG1->QEPSTS |= 0x80U;
}
}
/* USER CODE END */
}
Thanks,
