Practical Robotics Modular Robot Library
motors.h@3:8762f6b2ea8d, 2016-11-28 (annotated)
- Committer:
- jah128
- Date:
- Mon Nov 28 22:41:14 2016 +0000
- Revision:
- 3:8762f6b2ea8d
- Parent:
- 1:a6728adaf7e7
- Child:
- 5:6da8daaeb9f7
Added first RPi input
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
jah128 | 0:8a2dd255c508 | 1 | #ifndef MOTORS_H |
jah128 | 0:8a2dd255c508 | 2 | #define MOTORS_H |
jah128 | 0:8a2dd255c508 | 3 | |
jah128 | 1:a6728adaf7e7 | 4 | /** |
jah128 | 1:a6728adaf7e7 | 5 | * The Motors class contains the functions to control the robots motors |
jah128 | 1:a6728adaf7e7 | 6 | */ |
jah128 | 0:8a2dd255c508 | 7 | class Motors |
jah128 | 0:8a2dd255c508 | 8 | { |
jah128 | 0:8a2dd255c508 | 9 | public: |
jah128 | 0:8a2dd255c508 | 10 | /** |
jah128 | 0:8a2dd255c508 | 11 | * Setup the PWM based H-Bridge drivers for the motors |
jah128 | 0:8a2dd255c508 | 12 | */ |
jah128 | 0:8a2dd255c508 | 13 | void init(void); |
jah128 | 3:8762f6b2ea8d | 14 | |
jah128 | 3:8762f6b2ea8d | 15 | /** |
jah128 | 3:8762f6b2ea8d | 16 | * Returns the current [adjusted] value for the target left motor speed |
jah128 | 3:8762f6b2ea8d | 17 | * |
jah128 | 3:8762f6b2ea8d | 18 | * @returns The speed value from -1.0 to 1.0 |
jah128 | 3:8762f6b2ea8d | 19 | */ |
jah128 | 3:8762f6b2ea8d | 20 | float get_left_motor_speed(void); |
jah128 | 3:8762f6b2ea8d | 21 | |
jah128 | 3:8762f6b2ea8d | 22 | /** |
jah128 | 3:8762f6b2ea8d | 23 | * Returns the current [adjusted] value for the target right motor speed |
jah128 | 3:8762f6b2ea8d | 24 | * |
jah128 | 3:8762f6b2ea8d | 25 | * @returns The speed value from -1.0 to 1.0 |
jah128 | 3:8762f6b2ea8d | 26 | */ |
jah128 | 3:8762f6b2ea8d | 27 | float get_right_motor_speed(void); |
jah128 | 3:8762f6b2ea8d | 28 | |
jah128 | 3:8762f6b2ea8d | 29 | /** |
jah128 | 3:8762f6b2ea8d | 30 | * Calls set_left_motor_speed and set_right_motor_speed with equal values |
jah128 | 3:8762f6b2ea8d | 31 | * |
jah128 | 3:8762f6b2ea8d | 32 | * @params speed - The forward speed value from -1.0 to 1.0 |
jah128 | 3:8762f6b2ea8d | 33 | */ |
jah128 | 3:8762f6b2ea8d | 34 | void forwards(float speed); |
jah128 | 3:8762f6b2ea8d | 35 | |
jah128 | 3:8762f6b2ea8d | 36 | /** |
jah128 | 3:8762f6b2ea8d | 37 | * Calls set_left_motor_speed and set_right_motor_speed with equal inverse values |
jah128 | 3:8762f6b2ea8d | 38 | * |
jah128 | 3:8762f6b2ea8d | 39 | * @params speed - The forward speed value from -1.0 (max forwards) to 1.0 (max reverse) |
jah128 | 3:8762f6b2ea8d | 40 | */ |
jah128 | 3:8762f6b2ea8d | 41 | void backwards(float speed); |
jah128 | 3:8762f6b2ea8d | 42 | |
jah128 | 3:8762f6b2ea8d | 43 | /** |
jah128 | 3:8762f6b2ea8d | 44 | * Calls set_left_motor_speed and set_right_motor_speed with sign-opposite values |
jah128 | 3:8762f6b2ea8d | 45 | * |
jah128 | 3:8762f6b2ea8d | 46 | * @params speed - The forward speed value from -1.0 (max counterclockwise) to 1.0 (max clockwise) |
jah128 | 3:8762f6b2ea8d | 47 | */ |
jah128 | 3:8762f6b2ea8d | 48 | void turn(float speed); |
jah128 | 3:8762f6b2ea8d | 49 | |
jah128 | 1:a6728adaf7e7 | 50 | /** |
jah128 | 1:a6728adaf7e7 | 51 | * Put the H-Bridge drivers in sleep (low-power) mode |
jah128 | 3:8762f6b2ea8d | 52 | */ |
jah128 | 1:a6728adaf7e7 | 53 | void sleep(void); |
jah128 | 3:8762f6b2ea8d | 54 | |
jah128 | 1:a6728adaf7e7 | 55 | /** |
jah128 | 1:a6728adaf7e7 | 56 | * Wake the H-Bridge drivers from sleep mode |
jah128 | 1:a6728adaf7e7 | 57 | */ |
jah128 | 0:8a2dd255c508 | 58 | void wake_up(void); |
jah128 | 3:8762f6b2ea8d | 59 | |
jah128 | 1:a6728adaf7e7 | 60 | /** |
jah128 | 1:a6728adaf7e7 | 61 | * Set the left H-Bridge driver to high-Z (coast mode) for the motor |
jah128 | 1:a6728adaf7e7 | 62 | */ |
jah128 | 0:8a2dd255c508 | 63 | void coast_left(void); |
jah128 | 3:8762f6b2ea8d | 64 | |
jah128 | 1:a6728adaf7e7 | 65 | /** |
jah128 | 1:a6728adaf7e7 | 66 | * Set the left H-Bridge driver to active brake |
jah128 | 1:a6728adaf7e7 | 67 | */ |
jah128 | 0:8a2dd255c508 | 68 | void brake_left(void); |
jah128 | 3:8762f6b2ea8d | 69 | |
jah128 | 1:a6728adaf7e7 | 70 | /** |
jah128 | 1:a6728adaf7e7 | 71 | * Set the speed and direction of the left-motor H-Bridge driver |
jah128 | 1:a6728adaf7e7 | 72 | * |
jah128 | 1:a6728adaf7e7 | 73 | * @param speed - A value between -1.0 [max reverse], 0 [coast] and 1.0 [max forward] |
jah128 | 1:a6728adaf7e7 | 74 | */ |
jah128 | 0:8a2dd255c508 | 75 | void set_left_motor_speed(float speed); |
jah128 | 3:8762f6b2ea8d | 76 | |
jah128 | 1:a6728adaf7e7 | 77 | /** |
jah128 | 1:a6728adaf7e7 | 78 | * Set the right H-Bridge driver to high-Z (coast mode) for the motor |
jah128 | 1:a6728adaf7e7 | 79 | */ |
jah128 | 0:8a2dd255c508 | 80 | void coast_right(void); |
jah128 | 3:8762f6b2ea8d | 81 | |
jah128 | 1:a6728adaf7e7 | 82 | /** |
jah128 | 1:a6728adaf7e7 | 83 | * Set the right H-Bridge driver to active brake |
jah128 | 1:a6728adaf7e7 | 84 | */ |
jah128 | 0:8a2dd255c508 | 85 | void brake_right(void); |
jah128 | 3:8762f6b2ea8d | 86 | |
jah128 | 1:a6728adaf7e7 | 87 | /** |
jah128 | 1:a6728adaf7e7 | 88 | * Set both H-Bridge drivers to high-Z (coast mode) for the motor |
jah128 | 1:a6728adaf7e7 | 89 | */ |
jah128 | 0:8a2dd255c508 | 90 | void coast(void); |
jah128 | 3:8762f6b2ea8d | 91 | |
jah128 | 3:8762f6b2ea8d | 92 | /** |
jah128 | 3:8762f6b2ea8d | 93 | * Set both H-Bridge drivers to active brake |
jah128 | 3:8762f6b2ea8d | 94 | */ |
jah128 | 0:8a2dd255c508 | 95 | void brake(void); |
jah128 | 3:8762f6b2ea8d | 96 | |
jah128 | 1:a6728adaf7e7 | 97 | /** |
jah128 | 1:a6728adaf7e7 | 98 | * Set the speed and direction of the right-motor H-Bridge driver |
jah128 | 1:a6728adaf7e7 | 99 | * |
jah128 | 1:a6728adaf7e7 | 100 | * @param speed - A value between -1.0 [max reverse], 0 [coast] and 1.0 [max forward] |
jah128 | 1:a6728adaf7e7 | 101 | */ |
jah128 | 0:8a2dd255c508 | 102 | void set_right_motor_speed(float speed); |
jah128 | 3:8762f6b2ea8d | 103 | |
jah128 | 1:a6728adaf7e7 | 104 | /** |
jah128 | 1:a6728adaf7e7 | 105 | * Get the approximate instantaneous current draw of the left-motor H-Bridge driver |
jah128 | 1:a6728adaf7e7 | 106 | * |
jah128 | 1:a6728adaf7e7 | 107 | * @returns The current value in A |
jah128 | 1:a6728adaf7e7 | 108 | */ |
jah128 | 0:8a2dd255c508 | 109 | float get_current_left(void); |
jah128 | 3:8762f6b2ea8d | 110 | |
jah128 | 1:a6728adaf7e7 | 111 | /** |
jah128 | 1:a6728adaf7e7 | 112 | * Get the approximate instantaneous current draw of the right-motor H-Bridge driver |
jah128 | 1:a6728adaf7e7 | 113 | * |
jah128 | 1:a6728adaf7e7 | 114 | * @returns The current value in A |
jah128 | 1:a6728adaf7e7 | 115 | */ |
jah128 | 0:8a2dd255c508 | 116 | float get_current_right(void); |
jah128 | 3:8762f6b2ea8d | 117 | |
jah128 | 1:a6728adaf7e7 | 118 | /** |
jah128 | 1:a6728adaf7e7 | 119 | * Calculates an adjusted speed value to avoid stalls at low-speeds if USE_STALL_OFFSET is set to 1 [in robot.h] |
jah128 | 1:a6728adaf7e7 | 120 | * @params speed_in - The speed value from 0.0 to 1.0 |
jah128 | 1:a6728adaf7e7 | 121 | * @returns The adjusted speed value from 0.0 to 1.0, increased by STALL_OFFSET then scaled to fit |
jah128 | 1:a6728adaf7e7 | 122 | */ |
jah128 | 0:8a2dd255c508 | 123 | float get_adjusted_speed(float speed_in); |
jah128 | 3:8762f6b2ea8d | 124 | |
jah128 | 0:8a2dd255c508 | 125 | |
jah128 | 0:8a2dd255c508 | 126 | }; |
jah128 | 0:8a2dd255c508 | 127 | |
jah128 | 0:8a2dd255c508 | 128 | #endif |