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Diffstat (limited to 'libraries/Matrix/Matrix.cpp')
| -rwxr-xr-x | libraries/Matrix/Matrix.cpp | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/libraries/Matrix/Matrix.cpp b/libraries/Matrix/Matrix.cpp deleted file mode 100755 index 2eb3e25..0000000 --- a/libraries/Matrix/Matrix.cpp +++ /dev/null @@ -1,229 +0,0 @@ -/* - Matrix.cpp - Max7219 LED Matrix library for Arduino & Wiring - Copyright (c) 2006 Nicholas Zambetti. All right reserved. - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - This library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -*/ - -// TODO: Support segment displays in api? -// TODO: Support varying vendor layouts? - -/****************************************************************************** - * Includes - ******************************************************************************/ - -extern "C" { - // AVR LibC Includes - #include <inttypes.h> - #include <stdlib.h> - - // Wiring Core Includes - #undef abs - #include "WConstants.h" - - // Wiring Core Prototypes - //void pinMode(uint8_t, uint8_t); - //void digitalWrite(int, uint8_t); -} - -#include "Sprite.h" -#include "Matrix.h" - -/****************************************************************************** - * Definitions - ******************************************************************************/ - -// Matrix registers -#define REG_NOOP 0x00 -#define REG_DIGIT0 0x01 -#define REG_DIGIT1 0x02 -#define REG_DIGIT2 0x03 -#define REG_DIGIT3 0x04 -#define REG_DIGIT4 0x05 -#define REG_DIGIT5 0x06 -#define REG_DIGIT6 0x07 -#define REG_DIGIT7 0x08 -#define REG_DECODEMODE 0x09 -#define REG_INTENSITY 0x0A -#define REG_SCANLIMIT 0x0B -#define REG_SHUTDOWN 0x0C -#define REG_DISPLAYTEST 0x0F - -/****************************************************************************** - * Constructors - ******************************************************************************/ - -Matrix::Matrix(uint8_t data, uint8_t clock, uint8_t load, uint8_t screens /* = 1 */) -{ - // record pins for sw spi - _pinData = data; - _pinClock = clock; - _pinLoad = load; - - // set ddr for sw spi pins - pinMode(_pinClock, OUTPUT); - pinMode(_pinData, OUTPUT); - pinMode(_pinLoad, OUTPUT); - - // allocate screenbuffers - _screens = screens; - _buffer = (uint8_t*)calloc(_screens, 64); - _maximumX = (_screens * 8); - - // initialize registers - clear(); // clear display - setScanLimit(0x07); // use all rows/digits - setBrightness(0x0F); // maximum brightness - setRegister(REG_SHUTDOWN, 0x01); // normal operation - setRegister(REG_DECODEMODE, 0x00); // pixels not integers - setRegister(REG_DISPLAYTEST, 0x00); // not in test mode -} - -/****************************************************************************** - * MAX7219 SPI - ******************************************************************************/ - -// sends a single byte by sw spi (no latching) -void Matrix::putByte(uint8_t data) -{ - uint8_t i = 8; - uint8_t mask; - while(i > 0) { - mask = 0x01 << (i - 1); // get bitmask - digitalWrite(_pinClock, LOW); // tick - if (data & mask){ // choose bit - digitalWrite(_pinData, HIGH); // set 1 - }else{ - digitalWrite(_pinData, LOW); // set 0 - } - digitalWrite(_pinClock, HIGH); // tock - --i; // move to lesser bit - } -} - -// sets register to a byte value for all screens -void Matrix::setRegister(uint8_t reg, uint8_t data) -{ - digitalWrite(_pinLoad, LOW); // begin - for(uint8_t i = 0; i < _screens; ++i){ - putByte(reg); // specify register - putByte(data); // send data - } - digitalWrite(_pinLoad, HIGH); // latch in data - digitalWrite(_pinLoad, LOW); // end -} - -// syncs row of display with buffer -void Matrix::syncRow(uint8_t row) -{ - if (!_buffer) return; - - // uint8_t's can't be negative, so don't test for negative row - if (row >= 8) return; - digitalWrite(_pinLoad, LOW); // begin - for(uint8_t i = 0; i < _screens; ++i){ - putByte(8 - row); // specify register - putByte(_buffer[row + (8 * i)]); // send data - } - digitalWrite(_pinLoad, HIGH); // latch in data - digitalWrite(_pinLoad, LOW); // end -} - -/****************************************************************************** - * MAX7219 Configuration - ******************************************************************************/ - -// sets how many digits are displayed -void Matrix::setScanLimit(uint8_t value) -{ - setRegister(REG_SCANLIMIT, value & 0x07); -} - -// sets brightness of the display -void Matrix::setBrightness(uint8_t value) -{ - setRegister(REG_INTENSITY, value & 0x0F); -} - -/****************************************************************************** - * Helper Functions - ******************************************************************************/ - -void Matrix::buffer(uint8_t x, uint8_t y, uint8_t value) -{ - if (!_buffer) return; - - // uint8_t's can't be negative, so don't test for negative x and y. - if (x >= _maximumX || y >= 8) return; - - uint8_t offset = x; // record x - x %= 8; // make x relative to a single matrix - offset -= x; // calculate buffer offset - - // wrap shift relative x for nexus module layout - if (x == 0){ - x = 8; - } - --x; - - // record value in buffer - if(value){ - _buffer[y + offset] |= 0x01 << x; - }else{ - _buffer[y + offset] &= ~(0x01 << x); - } -} - -/****************************************************************************** - * User API - ******************************************************************************/ - -// buffers and writes to screen -void Matrix::write(uint8_t x, uint8_t y, uint8_t value) -{ - buffer(x, y, value); - - // update affected row - syncRow(y); -} - -void Matrix::write(uint8_t x, uint8_t y, Sprite sprite) -{ - for (uint8_t i = 0; i < sprite.height(); i++){ - for (uint8_t j = 0; j < sprite.width(); j++) - buffer(x + j, y + i, sprite.read(j, i)); - - syncRow(y + i); - } -} - -// clears screens and buffers -void Matrix::clear(void) -{ - if (!_buffer) return; - - // clear buffer - for(uint8_t i = 0; i < 8; ++i){ - for(uint8_t j = 0; j < _screens; ++j){ - _buffer[i + (8 * j)] = 0x00; - } - } - - // clear registers - for(uint8_t i = 0; i < 8; ++i){ - syncRow(i); - } -} - |