Split out ADC code into a separate file for pistol grip

Change-Id: Ie6401ef3fbfd1c33f7e46532a9624acb78a97bc6
diff --git a/motors/pistol_grip/controller.cc b/motors/pistol_grip/controller.cc
index b9e6683..b52a3dd 100644
--- a/motors/pistol_grip/controller.cc
+++ b/motors/pistol_grip/controller.cc
@@ -10,8 +10,8 @@
 #include "frc971/control_loops/drivetrain/integral_haptic_wheel.h"
 #include "motors/core/time.h"
 #include "motors/motor.h"
-#include "motors/peripheral/adc.h"
 #include "motors/peripheral/can.h"
+#include "motors/pistol_grip/controller_adc.h"
 #include "motors/pistol_grip/motor_controls.h"
 #include "motors/print/print.h"
 #include "motors/util.h"
@@ -70,106 +70,6 @@
   }
 }
 
-struct SmallAdcReadings {
-  uint16_t currents[3];
-};
-
-struct SmallInitReadings {
-  uint16_t motor0_abs;
-  uint16_t motor1_abs;
-  uint16_t wheel_abs;
-};
-
-void AdcInitSmall() {
-  AdcInitCommon();
-
-  // M0_CH0F ADC1_SE17
-  PORTA_PCR17 = PORT_PCR_MUX(0);
-
-  // M0_CH1F ADC1_SE14
-  PORTB_PCR10 = PORT_PCR_MUX(0);
-
-  // M0_CH2F ADC1_SE15
-  PORTB_PCR11 = PORT_PCR_MUX(0);
-
-  // M0_ABS ADC0_SE5b
-  PORTD_PCR1 = PORT_PCR_MUX(0);
-
-  // M1_CH0F ADC0_SE13
-  PORTB_PCR3 = PORT_PCR_MUX(0);
-
-  // M1_CH1F ADC0_SE12
-  PORTB_PCR2 = PORT_PCR_MUX(0);
-
-  // M1_CH2F ADC0_SE14
-  PORTC_PCR0 = PORT_PCR_MUX(0);
-
-  // M1_ABS ADC0_SE17
-  PORTE_PCR24 = PORT_PCR_MUX(0);
-
-  // WHEEL_ABS ADC0_SE18
-  PORTE_PCR25 = PORT_PCR_MUX(0);
-
-  // VIN ADC1_SE5B
-  PORTC_PCR9 = PORT_PCR_MUX(0);
-}
-
-SmallAdcReadings AdcReadSmall0(const DisableInterrupts &) {
-  SmallAdcReadings r;
-
-  ADC1_SC1A = 17;
-  while (!(ADC1_SC1A & ADC_SC1_COCO)) {
-  }
-  ADC1_SC1A = 14;
-  r.currents[0] = ADC1_RA;
-  while (!(ADC1_SC1A & ADC_SC1_COCO)) {
-  }
-  ADC1_SC1A = 15;
-  r.currents[1] = ADC1_RA;
-  while (!(ADC1_SC1A & ADC_SC1_COCO)) {
-  }
-  r.currents[2] = ADC1_RA;
-
-  return r;
-}
-
-SmallAdcReadings AdcReadSmall1(const DisableInterrupts &) {
-  SmallAdcReadings r;
-
-  ADC0_SC1A = 13;
-  while (!(ADC0_SC1A & ADC_SC1_COCO)) {
-  }
-  ADC0_SC1A = 12;
-  r.currents[0] = ADC0_RA;
-  while (!(ADC0_SC1A & ADC_SC1_COCO)) {
-  }
-  ADC0_SC1A = 14;
-  r.currents[1] = ADC0_RA;
-  while (!(ADC0_SC1A & ADC_SC1_COCO)) {
-  }
-  r.currents[2] = ADC0_RA;
-
-  return r;
-}
-
-SmallInitReadings AdcReadSmallInit(const DisableInterrupts &) {
-  SmallInitReadings r;
-
-  ADC0_SC1A = 5;
-  while (!(ADC0_SC1A & ADC_SC1_COCO)) {
-  }
-  ADC0_SC1A = 17;
-  r.motor0_abs = ADC0_RA;
-  while (!(ADC0_SC1A & ADC_SC1_COCO)) {
-  }
-  ADC0_SC1A = 18;
-  r.motor1_abs = ADC0_RA;
-  while (!(ADC0_SC1A & ADC_SC1_COCO)) {
-  }
-  r.wheel_abs = ADC0_RA;
-
-  return r;
-}
 
 constexpr float kHapticWheelCurrentLimit = static_cast<float>(
     ::frc971::control_loops::drivetrain::kHapticWheelCurrentLimit);