mouvement AX12 petit robot version 2
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Diff: mbed/AnalogOut.h
- Revision:
- 2:99b1cb0d9f5e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed/AnalogOut.h Tue Apr 18 16:02:40 2017 +0000 @@ -0,0 +1,112 @@ +/* mbed Microcontroller Library - AnalogOut + * Copyright (c) 2006-2011 ARM Limited. All rights reserved. + */ + +#ifndef MBED_ANALOGOUT_H +#define MBED_ANALOGOUT_H + +#include "device.h" + +#if DEVICE_ANALOGOUT + +#include "platform.h" +#include "PinNames.h" +#include "PeripheralNames.h" +#include "Base.h" + +namespace mbed { + +/* Class: AnalogOut + * An analog output, used for setting the voltage on a pin + * + * Example: + * > // Make a sawtooth output + * > + * > #include "mbed.h" + * > + * > AnalogOut tri(p18); + * > int main() { + * > while(1) { + * > tri = tri + 0.01; + * > wait_us(1); + * > if(tri == 1) { + * > tri = 0; + * > } + * > } + * > } + */ +class AnalogOut : public Base { + +public: + + /* Constructor: AnalogOut + * Create an AnalogOut connected to the specified pin + * + * Variables: + * pin - AnalogOut pin to connect to (18) + */ + AnalogOut(PinName pin, const char *name = NULL); + + /* Function: write + * Set the output voltage, specified as a percentage (float) + * + * Variables: + * percent - A floating-point value representing the output voltage, + * specified as a percentage. The value should lie between + * 0.0f (representing 0v / 0%) and 1.0f (representing 3.3v / 100%). + * Values outside this range will be saturated to 0.0f or 1.0f. + */ + void write(float value); + + /* Function: write_u16 + * Set the output voltage, represented as an unsigned short in the range [0x0, 0xFFFF] + * + * Variables: + * value - 16-bit unsigned short representing the output voltage, + * normalised to a 16-bit value (0x0000 = 0v, 0xFFFF = 3.3v) + */ + void write_u16(unsigned short value); + + /* Function: read + * Return the current output voltage setting, measured as a percentage (float) + * + * Variables: + * returns - A floating-point value representing the current voltage being output on the pin, + * measured as a percentage. The returned value will lie between + * 0.0f (representing 0v / 0%) and 1.0f (representing 3.3v / 100%). + * + * Note: + * This value may not match exactly the value set by a previous <write>. + */ + float read(); + + +#ifdef MBED_OPERATORS + /* Function: operator= + * An operator shorthand for <write()> + */ + AnalogOut& operator= (float percent); + AnalogOut& operator= (AnalogOut& rhs); + + /* Function: operator float() + * An operator shorthand for <read()> + */ + operator float(); +#endif + +#ifdef MBED_RPC + virtual const struct rpc_method *get_rpc_methods(); + static struct rpc_class *get_rpc_class(); +#endif + +protected: + + DACName _dac; + +}; + +} // namespace mbed + +#endif + +#endif