add arduino-0018-linux (32 bit)
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229
arduino-0018-linux/libraries/Matrix/Matrix.cpp
Executable file
229
arduino-0018-linux/libraries/Matrix/Matrix.cpp
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/*
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Matrix.cpp - Max7219 LED Matrix library for Arduino & Wiring
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Copyright (c) 2006 Nicholas Zambetti. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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// TODO: Support segment displays in api?
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// TODO: Support varying vendor layouts?
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/******************************************************************************
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* Includes
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******************************************************************************/
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extern "C" {
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// AVR LibC Includes
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#include <inttypes.h>
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#include <stdlib.h>
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// Wiring Core Includes
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#undef abs
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#include "WConstants.h"
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// Wiring Core Prototypes
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//void pinMode(uint8_t, uint8_t);
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//void digitalWrite(int, uint8_t);
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}
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#include "Sprite.h"
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#include "Matrix.h"
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/******************************************************************************
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* Definitions
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******************************************************************************/
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// Matrix registers
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#define REG_NOOP 0x00
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#define REG_DIGIT0 0x01
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#define REG_DIGIT1 0x02
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#define REG_DIGIT2 0x03
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#define REG_DIGIT3 0x04
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#define REG_DIGIT4 0x05
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#define REG_DIGIT5 0x06
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#define REG_DIGIT6 0x07
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#define REG_DIGIT7 0x08
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#define REG_DECODEMODE 0x09
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#define REG_INTENSITY 0x0A
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#define REG_SCANLIMIT 0x0B
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#define REG_SHUTDOWN 0x0C
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#define REG_DISPLAYTEST 0x0F
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/******************************************************************************
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* Constructors
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******************************************************************************/
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Matrix::Matrix(uint8_t data, uint8_t clock, uint8_t load, uint8_t screens /* = 1 */)
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{
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// record pins for sw spi
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_pinData = data;
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_pinClock = clock;
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_pinLoad = load;
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// set ddr for sw spi pins
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pinMode(_pinClock, OUTPUT);
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pinMode(_pinData, OUTPUT);
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pinMode(_pinLoad, OUTPUT);
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// allocate screenbuffers
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_screens = screens;
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_buffer = (uint8_t*)calloc(_screens, 64);
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_maximumX = (_screens * 8);
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// initialize registers
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clear(); // clear display
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setScanLimit(0x07); // use all rows/digits
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setBrightness(0x0F); // maximum brightness
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setRegister(REG_SHUTDOWN, 0x01); // normal operation
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setRegister(REG_DECODEMODE, 0x00); // pixels not integers
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setRegister(REG_DISPLAYTEST, 0x00); // not in test mode
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}
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/******************************************************************************
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* MAX7219 SPI
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******************************************************************************/
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// sends a single byte by sw spi (no latching)
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void Matrix::putByte(uint8_t data)
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{
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uint8_t i = 8;
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uint8_t mask;
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while(i > 0) {
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mask = 0x01 << (i - 1); // get bitmask
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digitalWrite(_pinClock, LOW); // tick
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if (data & mask){ // choose bit
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digitalWrite(_pinData, HIGH); // set 1
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}else{
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digitalWrite(_pinData, LOW); // set 0
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}
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digitalWrite(_pinClock, HIGH); // tock
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--i; // move to lesser bit
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}
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}
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// sets register to a byte value for all screens
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void Matrix::setRegister(uint8_t reg, uint8_t data)
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{
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digitalWrite(_pinLoad, LOW); // begin
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for(uint8_t i = 0; i < _screens; ++i){
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putByte(reg); // specify register
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putByte(data); // send data
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}
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digitalWrite(_pinLoad, HIGH); // latch in data
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digitalWrite(_pinLoad, LOW); // end
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}
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// syncs row of display with buffer
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void Matrix::syncRow(uint8_t row)
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{
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if (!_buffer) return;
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// uint8_t's can't be negative, so don't test for negative row
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if (row >= 8) return;
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digitalWrite(_pinLoad, LOW); // begin
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for(uint8_t i = 0; i < _screens; ++i){
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putByte(8 - row); // specify register
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putByte(_buffer[row + (8 * i)]); // send data
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}
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digitalWrite(_pinLoad, HIGH); // latch in data
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digitalWrite(_pinLoad, LOW); // end
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}
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/******************************************************************************
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* MAX7219 Configuration
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******************************************************************************/
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// sets how many digits are displayed
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void Matrix::setScanLimit(uint8_t value)
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{
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setRegister(REG_SCANLIMIT, value & 0x07);
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}
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// sets brightness of the display
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void Matrix::setBrightness(uint8_t value)
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{
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setRegister(REG_INTENSITY, value & 0x0F);
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}
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/******************************************************************************
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* Helper Functions
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******************************************************************************/
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void Matrix::buffer(uint8_t x, uint8_t y, uint8_t value)
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{
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if (!_buffer) return;
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// uint8_t's can't be negative, so don't test for negative x and y.
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if (x >= _maximumX || y >= 8) return;
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uint8_t offset = x; // record x
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x %= 8; // make x relative to a single matrix
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offset -= x; // calculate buffer offset
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// wrap shift relative x for nexus module layout
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if (x == 0){
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x = 8;
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}
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--x;
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// record value in buffer
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if(value){
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_buffer[y + offset] |= 0x01 << x;
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}else{
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_buffer[y + offset] &= ~(0x01 << x);
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}
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}
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/******************************************************************************
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* User API
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******************************************************************************/
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// buffers and writes to screen
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void Matrix::write(uint8_t x, uint8_t y, uint8_t value)
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{
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buffer(x, y, value);
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// update affected row
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syncRow(y);
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}
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void Matrix::write(uint8_t x, uint8_t y, Sprite sprite)
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{
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for (uint8_t i = 0; i < sprite.height(); i++){
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for (uint8_t j = 0; j < sprite.width(); j++)
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buffer(x + j, y + i, sprite.read(j, i));
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syncRow(y + i);
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}
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}
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// clears screens and buffers
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void Matrix::clear(void)
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{
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if (!_buffer) return;
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// clear buffer
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for(uint8_t i = 0; i < 8; ++i){
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for(uint8_t j = 0; j < _screens; ++j){
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_buffer[i + (8 * j)] = 0x00;
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}
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}
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// clear registers
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for(uint8_t i = 0; i < 8; ++i){
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syncRow(i);
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}
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}
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54
arduino-0018-linux/libraries/Matrix/Matrix.h
Executable file
54
arduino-0018-linux/libraries/Matrix/Matrix.h
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/*
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Matrix.h - Max7219 LED Matrix library for Arduino & Wiring
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Copyright (c) 2006 Nicholas Zambetti. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef Matrix_h
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#define Matrix_h
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#include <inttypes.h>
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class Sprite;
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class Matrix
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{
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private:
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uint8_t _pinData;
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uint8_t _pinClock;
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uint8_t _pinLoad;
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uint8_t* _buffer;
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uint8_t _screens;
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uint8_t _maximumX;
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void putByte(uint8_t);
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void setRegister(uint8_t, uint8_t);
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void syncRow(uint8_t);
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void setScanLimit(uint8_t);
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void buffer(uint8_t, uint8_t, uint8_t);
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public:
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Matrix(uint8_t, uint8_t, uint8_t, uint8_t = 1);
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void setBrightness(uint8_t);
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void write(uint8_t, uint8_t, uint8_t);
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void write(uint8_t, uint8_t, Sprite);
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void clear(void);
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};
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#endif
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#include <Sprite.h>
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#include <Matrix.h>
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// Hello Matrix
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// by Nicholas Zambetti <http://www.zambetti.com>
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// Demonstrates the use of the Matrix library
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// For MAX7219 LED Matrix Controllers
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// Blinks welcoming face on screen
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// Created 13 February 2006
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/* create a new Matrix instance
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pin 0: data (din)
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pin 1: load (load)
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pin 2: clock (clk)
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*/
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Matrix myMatrix = Matrix(0, 2, 1);
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void setup()
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{
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}
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void loop()
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{
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myMatrix.clear(); // clear display
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delay(1000);
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// turn some pixels on
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myMatrix.write(1, 5, HIGH);
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myMatrix.write(2, 2, HIGH);
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myMatrix.write(2, 6, HIGH);
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myMatrix.write(3, 6, HIGH);
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myMatrix.write(4, 6, HIGH);
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myMatrix.write(5, 2, HIGH);
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myMatrix.write(5, 6, HIGH);
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myMatrix.write(6, 5, HIGH);
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delay(1000);
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}
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#include <Sprite.h>
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#include <Matrix.h>
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// Sprite Animation
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// by Nicholas Zambetti <http://www.zambetti.com>
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// Demonstrates the use of the Matrix & Sprite libraries
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// Displays animated waveform graphic on screen
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// Created 29 March 2006
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/* create a new Matrix instance
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pin 0: data (din)
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pin 1: load (load)
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pin 2: clock (clk)
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*/
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Matrix myMatrix = Matrix(0, 2, 1);
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/* create a new Sprite instance
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8 pixels wide, 4 pixels tall
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*/
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Sprite wave = Sprite(
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8, 4,
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B00011000,
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B00100100,
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B01000010,
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B10000001
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);
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void setup()
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{
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}
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int x = 0;
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void loop()
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{
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myMatrix.write(x, 2, wave); // place sprite on screen
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myMatrix.write(x - 8, 2, wave); // place sprite again, elsewhere on screen
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delay(75); // wait a little bit
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myMatrix.clear(); // clear the screen for next animation frame
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if(x == 8) // if reached end of animation sequence
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{
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x = 0; // start from beginning
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}
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x++; // advance x coordinate to the right
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}
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22
arduino-0018-linux/libraries/Matrix/keywords.txt
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arduino-0018-linux/libraries/Matrix/keywords.txt
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#######################################
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# Syntax Coloring Map For Matrix
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#######################################
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#######################################
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# Datatypes (KEYWORD1)
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#######################################
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Matrix KEYWORD1
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#######################################
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# Methods and Functions (KEYWORD2)
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#######################################
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setBrightness KEYWORD2
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write KEYWORD2
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clear KEYWORD2
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#######################################
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# Constants (LITERAL1)
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#######################################
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