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CommandStation-EX/IO_ExampleSerial.h
Neil McKechnie 9dacd24d27
Various HAL enhancements. (#182)
* Add <D SERVO vpin position> command

Allow a PWM servo to be driven to any arbitrary position.

* Enhancements for HAL drivers

Add state change notification for external GPIO module drivers;
Allow drivers to be installed statically by declaration (as an alternative to the 'create' call).

* Create IO_HCSR04.h

HAL driver for HC-SR04 ultrasonic distance sensor (sonar).

* Enable servo commands in NO-HAL mode, but return error.

Avoid compile errors in RMFT.cpp when compiled with basic HAL by including the Turnout::createServo function as a stub that returns NULL.

* Update IO_HCSR04.h

Minor changes

* Change <D SERVO>

Give the <D SERVO> command an optional parameter of the profile.  For example, <D SERVO 100 200 3> will slowly move the servo on pin 100 to PWM position corresponding to 200.  If omitted, the servo will move immediately (no animation).

* IODevice (HAL) changes

1) Put new devices on the end of the chain instead of the beginning.  This will give better performance for devices created first (ArduinoPins and extender GPIO devices, typically).
2) Remove unused functions.

* Update IO_HCSR04.h

Allow thresholds for ON and OFF to be separately configured at creation.

* Update IODevice.cpp

Fix compile error on IO_NO_HAL minimal HAL version.

* Update IO_PCA9685.cpp

Remove unnecessary duplicated call to min() function.
2021-08-17 23:41:34 +01:00

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C++

/*
* © 2021, Neil McKechnie. All rights reserved.
*
* This file is part of DCC++EX API
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* It is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
*/
/*
* To declare a device instance,
* IO_ExampleSerial myDevice(1000, 10, Serial3, 9600);
* or to create programmatically,
* IO_ExampleSerial::create(1000, 10, Serial3, 9600);
*
* (uses VPINs 1000-1009, talke on Serial 3 at 9600 baud.)
*
* See IO_ExampleSerial.cpp for the protocol used over the serial line.
*
*/
#ifndef IO_EXAMPLESERIAL_H
#define IO_EXAMPLESERIAL_H
#include "IODevice.h"
class IO_ExampleSerial : public IODevice {
public:
IO_ExampleSerial(VPIN firstVpin, int nPins, HardwareSerial *serial, unsigned long baud);
static void create(VPIN firstVpin, int nPins, HardwareSerial *serial, unsigned long baud);
protected:
void _begin() override;
void _loop(unsigned long currentMicros) override;
void _write(VPIN vpin, int value) override;
int _read(VPIN vpin) override;
void _display() override;
private:
HardwareSerial *_serial;
uint8_t _inputState = 0;
int _inputIndex = 0;
int _inputValue = 0;
uint16_t *_pinValues; // Pointer to block of memory containing pin values
unsigned long _baud;
};
#endif // IO_EXAMPLESERIAL_H