Lab 1 Program C
Fork of mbed by
PwmOut.h
- Committer:
- simon.ford@mbed.co.uk
- Date:
- 2008-04-08
- Revision:
- 0:82220227f4fa
- Child:
- 1:6b7f447ca868
File content as of revision 0:82220227f4fa:
/* mbed Microcontroller Library - PwmOut * Copyright (c) 2007-2008, sford */ #ifndef MBED_PWMOUT_H #define MBED_PWMOUT_H #include "Base.h" namespace mbed { /* Class: PwmOut * A pulse-width modulation digital output */ class PwmOut : public Base { public: /* Group: Configuration Methods */ /* Constructor: PwmOut * Create a PwmOut connected to the specified pin * * Variables: * pin - PwmOut pin to connect to (21-26) */ PwmOut(int pin); /* Group: Access Methods (Analog-like) */ /* Function: write * Set the ouput duty-cycle, specified as a percentage (float) * * Variables: * percent - A floating-point value representing the output duty-cycle, * specified as a percentage. The value should lie between * 0.0f (representing 0v / on 0%) and 1.0f (representing 3.3v / on 100%). * Values outside this range will be saturated to 0.0f or 1.0f. */ void write(float percent); /* Function: write_v * Set the output duty-cycle, specified in volts (float) * * Variables: * v - A floating-point value representing the output duty-cycle, * specified in volts. The value should lie between * 0.0f (representing 0v / 0% on) and 3.3f (representing 3.3v / 100% on). * Values outside this range will be saturated to 0.0f or 3.3f. */ void write_v(float v); /* Function: write_mv * Set the output duty-cycle, specified in mili-volts (int) * * Variables: * mv - An integer value representing the output duty-cycle, * specified in milli-volts. The value should lie between * 0 (representing 0v / 0% on) and 3300 (representing 3.3v / 100% on). * Values outside this range will be saturated to 0 or 3300. */ void write_mv(int mv); /* Function: read * Return the current output duty-cycle setting, measured as a percentage (float) * * Variables: * returns - A floating-point value representing the current duty-cycle being output on the pin, * measured as a percentage. The returned value will lie between * 0.0f (representing 0v / 0% on) and 1.0f (representing 3.3v / 100% on). * * Note: * This value may not match exactly the value set by a previous <write>. */ float read(); /* Group: Access Methods (Pulse-width) */ /* Function: period * Set the PWM period, specified in seconds (float) * * Note: * This is common to all PwmOut's, so changing it on one will change them all */ void period(float seconds); /* Function: pulsewidth * Set the PWM pulsewidth, specified in seconds (float) */ void pulsewidth(float seconds); /* Function: period_ms * Set the PWM period, specified in milli-seconds (int) * * Note: * This is common to all PwmOut's, so changing it on one will change them all */ void period_ms(int ms); /* Function: pulsewidth_ms * Set the PWM pulsewidth, specified in milli-seconds (int) */ void pulsewidth_ms(int ms); /* Function: period_us * Set the PWM period, specified in micro-seconds (int) * * Note: * This is common to all PwmOut's, so changing it on one will change them all */ void period_us(int us); /* Function: pulsewidth_us * Set the PWM pulsewidth, specified in micro-seconds (int) */ void pulsewidth_us(int us); /* Group: Access Method Shorthand */ /* Function: operator= * A shorthand for <write> */ PwmOut& operator= (float percent); PwmOut& operator= (PwmOut& rhs); /* Function: operator float() * A shorthand for <read> */ operator float(); protected: int _id; }; } #endif