server/actuators/pregulator.c

   1 #include "pregulator.h"
   2 #include "../bbb_pin.h"
   3
   4 #define PREGULATOR_PWM ECAP0
   5 #define PREGULATOR_PERIOD 16666667
   6
   7 /**
   8  * Initiliase the pressure regulator
   9  */
  10 bool Pregulator_Init(const char * name, int id)
  11 {
  12         return PWM_Export(PREGULATOR_PWM) && PWM_Set(PREGULATOR_PWM, false, PREGULATOR_PERIOD, 0);
  13 }
  14
  15 bool Pregulator_Cleanup(int id)
  16 {
  17         if (!PWM_Set(PREGULATOR_PWM, false, PREGULATOR_PERIOD, 0))
  18                 return false;
  19         PWM_Unexport(PREGULATOR_PWM);
  20         return true;
  21 }
  22
  23 bool Pregulator_Set(int id, double value)
  24 {
  25         return PWM_Set(PREGULATOR_PWM, false, PREGULATOR_PERIOD, value*(PREGULATOR_PERIOD));
  26 }
  27
  28 bool Pregulator_Sanity(int id, double value)
  29 {
  30         return (value >= 0.0 && value <= 1.0);
  31 }
  32