| Brian Silverman | 26e4e52 | 2015-12-17 01:56:40 -0500 | [diff] [blame^] | 1 | /*----------------------------------------------------------------------------*/ |
| 2 | /* Copyright (c) FIRST 2008. All Rights Reserved. */ |
| 3 | /* Open Source Software - may be modified and shared by FRC teams. The code */ |
| 4 | /* must be accompanied by the FIRST BSD license file in $(WIND_BASE)/WPILib. */ |
| 5 | /*----------------------------------------------------------------------------*/ |
| 6 | |
| 7 | #include "Victor.h" |
| 8 | |
| 9 | //#include "NetworkCommunication/UsageReporting.h" |
| 10 | #include "LiveWindow/LiveWindow.h" |
| 11 | |
| 12 | /** |
| 13 | * @param channel The PWM channel that the Victor is attached to. |
| 14 | */ |
| 15 | Victor::Victor(uint32_t channel) : SafePWM(channel) |
| 16 | { |
| 17 | /* Note that the Victor uses the following bounds for PWM values. These values |
| 18 | * were determined empirically and optimized for the Victor 888. These values |
| 19 | * should work reasonably well for Victor 884 controllers as well but if users |
| 20 | * experience issues such as asymmetric behavior around the deadband or |
| 21 | * inability to saturate the controller in either direction, calibration is |
| 22 | * recommended. The calibration procedure can be found in the Victor 884 User |
| 23 | * Manual available from IFI. |
| 24 | * |
| 25 | * - 206 = full "forward" |
| 26 | * - 131 = the "high end" of the deadband range |
| 27 | * - 128 = center of the deadband range (off) |
| 28 | * - 125 = the "low end" of the deadband range |
| 29 | * - 56 = full "reverse" |
| 30 | */ |
| 31 | |
| 32 | SetBounds(2.027, 1.525, 1.507, 1.49, 1.026); |
| 33 | SetPeriodMultiplier(kPeriodMultiplier_2X); |
| 34 | SetRaw(m_centerPwm); |
| 35 | |
| 36 | LiveWindow::GetInstance()->AddActuator("Victor", GetChannel(), this); |
| 37 | } |
| 38 | |
| 39 | /** |
| 40 | * Set the PWM value. |
| 41 | * |
| 42 | * The PWM value is set using a range of -1.0 to 1.0, appropriately |
| 43 | * scaling the value for the FPGA. |
| 44 | * |
| 45 | * @param speed The speed value between -1.0 and 1.0 to set. |
| 46 | * @param syncGroup Unused interface. |
| 47 | */ |
| 48 | void Victor::Set(float speed, uint8_t syncGroup) |
| 49 | { |
| 50 | SetSpeed(speed); |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Get the recently set value of the PWM. |
| 55 | * |
| 56 | * @return The most recently set value for the PWM between -1.0 and 1.0. |
| 57 | */ |
| 58 | float Victor::Get() const |
| 59 | { |
| 60 | return GetSpeed(); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Common interface for disabling a motor. |
| 65 | */ |
| 66 | void Victor::Disable() |
| 67 | { |
| 68 | SetRaw(kPwmDisabled); |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * Write out the PID value as seen in the PIDOutput base object. |
| 73 | * |
| 74 | * @param output Write out the PWM value as was found in the PIDController |
| 75 | */ |
| 76 | void Victor::PIDWrite(float output) |
| 77 | { |
| 78 | Set(output); |
| 79 | } |