Mon, 28 Jan 2019 21:51:45 +0100
Add the (missing?) Keypad lib
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lib/keypad/Keypad.cpp Mon Jan 28 21:51:45 2019 +0100 @@ -0,0 +1,88 @@ +#include "mbed.h" +#include "Keypad.h" + + +Keypad::Keypad(uint8_t nRows, DigitalIn rows[], + uint8_t nColumns, DigitalOut cols[], + int debounce_ms): + _rows(), + _columns(), + _debounce(debounce_ms), + _started(false), + _nrows(nRows), + _ncols(nColumns) +{ + printf("Setup Keypad: %dx%d\r\n", nColumns, nRows); + for(uint8_t c=0; c<nColumns; c++) { + _columns.push_back(cols[c]); + _columns[c].write(0); + } + + for(uint8_t r=0; r<nRows; r++) { + _rows.push_back(rows[r]); + _rows[r].mode(PullDown); + } + _keys = new uint8_t[_nrows*_ncols]; +} + +Keypad::~Keypad() +{ + delete _keys; +} + +void Keypad::run() +{ + uint8_t col=0; + uint8_t row; + + for (row=0; row<(_ncols*_nrows); row++) + _keys[row] = 0; + while(_started) { + _columns[col].write(1); + Thread::wait(5); + for(row=0; row<_nrows; row++) + { + if (_rows[row].read()) + { + if (_keys[row + _nrows*col] < 2) + { + _keys[row + _nrows*col]++; + if ((_keys[row + _nrows*col] == 2) && _kp_callback) + _kp_callback.call(row, col); + } + } + else + { + if (_keys[row + _nrows*col] > 0) + { + _keys[row + _nrows*col]--; + if ((_keys[row + _nrows*col] == 0) && _kr_callback) + _kr_callback.call(row, col); + } + } + } + _columns[col].write(0); + col = (col+1) % _ncols; + Thread::wait(5); + } +} + +void Keypad::attach(const keyevent_callback_t& kp_callback, + const keyevent_callback_t& kr_callback) +{ + _kp_callback = kp_callback; + _kr_callback = kr_callback; +} + +void Keypad::start(void) +{ +if (_started) + return; +_started = true; +_loop.start(this, &Keypad::run); +} + +void Keypad::stop(void) +{ + _started = false; +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lib/keypad/Keypad.h Mon Jan 28 21:51:45 2019 +0100 @@ -0,0 +1,53 @@ + +#ifndef KEYPAD_H +#define KEYPAD_H + +#include "mbed.h" +#include "rtos.h" +#include <vector> + + + +typedef Callback<void(uint8_t, uint8_t)> keyevent_callback_t; + +class Keypad { +public: + Keypad(uint8_t nRows, DigitalIn rows[], + uint8_t nColumns, DigitalOut cols[], + int debounce_ms=20); + + /** Destructor + */ + ~Keypad(); + + void attach(const keyevent_callback_t& kp_callback=NULL, + const keyevent_callback_t& kr_callback=NULL); + + void start(void); + void stop(void); + + +protected: + std::vector<DigitalIn> _rows; + std::vector<DigitalOut> _columns; + int _debounce; // miliseconds + + void _kp(); + void _kr(); + void _keyPressed(int row); + void _keyReleased(int row); + void run(); + +private: + keyevent_callback_t _kp_callback; + keyevent_callback_t _kr_callback; + bool _started; + Thread _loop; + //tloop.start(&loop); + uint8_t _nrows; + uint8_t _ncols; + uint8_t *_keys; +}; + + +#endif // KEYPAD_H
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lib/keypad/library.json Mon Jan 28 21:51:45 2019 +0100 @@ -0,0 +1,36 @@ +{ + "authors": { + "name": "HM Yoong", + "url": "https://developer.mbed.org/users/yoonghm/" + }, + "description": "An interrupt-driven interface to 4x4 keypad.", + "examples": [ + "https://developer.mbed.org/users/daryl2110/code/FYPFinalProgram/", + "https://developer.mbed.org/users/daryl2110/code/FYPFinalizeProgram/", + "https://developer.mbed.org/users/ficofer/code/KEYS/", + "https://developer.mbed.org/users/sherckuith/code/Proyect_Patric_electronic_door_MSC_Ok_ES/", + "https://developer.mbed.org/users/salondonog/code/Tarea6/", + "https://developer.mbed.org/users/avallejopo/code/Tarea6/", + "https://developer.mbed.org/users/amarincan/code/tarea6keypad/", + "https://developer.mbed.org/users/mandres7/code/Teclado/", + "https://developer.mbed.org/users/lcorralesc1/code/Tarea6_Teclado/", + "https://developer.mbed.org/users/yoonghm/code/_library_keypad/" + ], + "frameworks": "mbed", + "keywords": [ + "interrupt", + "keypad" + ], + "name": "keypad", + "platforms": [ + "freescalekinetis", + "nordicnrf51", + "nxplpc", + "ststm32", + "teensy" + ], + "repository": { + "type": "hg", + "url": "https://developer.mbed.org/users/yoonghm/code/keypad/" + } +} \ No newline at end of file