For 24bar graph support
Dependents: toastboard_integrated
Fork of Adafruit_LEDBackpack_2 by
Adafruit_LEDBackpack.cpp
- Committer:
- ddrew73
- Date:
- 2014-11-18
- Revision:
- 2:0491b3f9a639
- Parent:
- 1:f066d5347c60
File content as of revision 2:0491b3f9a639:
/*************************************************** This is a library for our I2C LED Backpacks Designed specifically to work with the Adafruit LED Matrix backpacks ----> http://www.adafruit.com/products/ ----> http://www.adafruit.com/products/ These displays use I2C to communicate, 2 pins are required to interface. There are multiple selectable I2C addresses. For backpacks with 2 Address Select pins: 0x70, 0x71, 0x72 or 0x73. For backpacks with 3 Address Select pins: 0x70 thru 0x77 Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Limor Fried/Ladyada for Adafruit Industries. BSD license, all text above must be included in any redistribution ****************************************************/ /* * Modified by Luiz Hespanha (http://www.d3.do) 8/16/2013 for use in LPC1768 */ /* * Modified by Daniel Drew 11/13/2014 for use with 24ledbar backpack */ #include "mbed.h" #include "Adafruit_LEDBackpack.h" #include "Adafruit_GFX.h" #ifndef _BV #define _BV(bit) (1<<(bit)) #endif void Adafruit_LEDBackpack::setBrightness(uint8_t b) { if (b > 15) b = 15; uint8_t c = 0xE0 | b; char foo[1]; foo[0] = c; _i2c->write(i2c_addr, foo, 1); } void Adafruit_LEDBackpack::blinkRate(uint8_t b) { if (b > 3) b = 0; // turn off if not sure uint8_t c = HT16K33_BLINK_CMD | HT16K33_BLINK_DISPLAYON | (b << 1); char foo[1]; foo[0] = c; _i2c->write(i2c_addr, foo, 1); } Adafruit_LEDBackpack::Adafruit_LEDBackpack(I2C *i2c): _i2c(i2c) { } void Adafruit_LEDBackpack::begin(uint8_t _addr = 0x70) { i2c_addr = _addr << 1; char foo[1]; foo[0] = 0x21; _i2c->write(i2c_addr, foo, 1); // turn on oscillator blinkRate(HT16K33_BLINK_OFF); setBrightness(15); // max brightness } void Adafruit_LEDBackpack::writeDisplay(void) { char foo[17]; foo[0] = 0x00; int j = 0; for (uint8_t i=1; i<=16; i+=2) { int x = displaybuffer[j] & 0xFF; foo[i] = x; int x2 = displaybuffer[j] >> 8; foo[i+1] = x2; j++; } _i2c->write(i2c_addr, foo, 17); } void Adafruit_LEDBackpack::clear(void) { for (uint8_t i=0; i<8; i++) { displaybuffer[i] = 0; } } Adafruit_8x8matrix::Adafruit_8x8matrix(I2C *i2c) : Adafruit_LEDBackpack(i2c), Adafruit_GFX(8, 8) { } void Adafruit_8x8matrix::drawPixel(int16_t x, int16_t y, uint16_t color) { if ((y < 0) || (y >= 8)) return; if ((x < 0) || (x >= 8)) return; // check rotation, move pixel around if necessary switch (getRotation()) { case 1: swap(x, y); x = 8 - x - 1; break; case 2: x = 8 - x - 1; y = 8 - y - 1; break; case 3: swap(x, y); y = 8 - y - 1; break; } // wrap around the x x += 7; x %= 8; if (color) { displaybuffer[y] |= 1 << x; } else { displaybuffer[y] &= ~(1 << x); } } /******************************* 24 BARGRAPH OBJECT */ Adafruit_24bargraph::Adafruit_24bargraph(I2C *i2c): Adafruit_LEDBackpack(i2c) { } void Adafruit_24bargraph::setBar(uint8_t bar, uint8_t color) { uint16_t a, c; if (bar < 12) c = bar / 4; else c = (bar - 12) / 4; a = bar % 4; if (bar >= 12) a += 4; //Serial.print("Ano = "); Serial.print(a); Serial.print(" Cath = "); Serial.println(c); if (color == LED_RED) { // Turn on red LED. displaybuffer[c] |= _BV(a); // Turn off green LED. displaybuffer[c] &= ~_BV(a+8); } else if (color == LED_YELLOW) { // Turn on red and green LED. displaybuffer[c] |= _BV(a) | _BV(a+8); } else if (color == LED_OFF) { // Turn off red and green LED. displaybuffer[c] &= ~_BV(a) & ~_BV(a+8); } else if (color == LED_GREEN) { // Turn on green LED. displaybuffer[c] |= _BV(a+8); // Turn off red LED. displaybuffer[c] &= ~_BV(a); } }