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mymaestromymaestro
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Library for controlling an SAA1064
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‎SAA1064-library/libraries/SAA1064/examples/counter/counter.ino‎

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/*
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* Write to 7-segment LEDs using the SAA1064
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*/
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#include "Wire.h" // enable I2C bus
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#include <saa1064.h>
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byte addr = 0x70; // Chip select address (pin 1 to GND)
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int brightness = 2; // 0 = off, 6 = bright (21ma)
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SAA1064 saa1064;
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void setup() {
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saa1064.begin(addr, brightness);
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}
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void loop() {
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saa1064.clear();
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for (int i=0; i<10000; i++) {
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saa1064.displayInt(i, 0);
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delay(125);
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}
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}
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‎SAA1064-library/libraries/SAA1064/examples/counterBrightness/counterBrightness.ino‎

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/*
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* Write to 7-segment LEDs using the SAA1064
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*/
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#include "Wire.h" // enable I2C bus
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#include <saa1064.h>
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byte addr = 0x70; // Chip select address (pin 1 to GND)
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int brightness = 2; // 0 = off, 6 = bright (21ma)
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#define INPUT A0
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SAA1064 saa1064;
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void setup() {
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saa1064.begin(addr, brightness);
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pinMode(INPUT, input);
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}
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void loop() {
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saa1064.clear();
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for (int i=0; i<10000; i++) {
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saa1064.displayInt(i, 0);
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delay(125);
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}
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}
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‎SAA1064-library/libraries/SAA1064/keywords.txt‎

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#######################################
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# Syntax Coloring Map for SAA1064
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#######################################
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#######################################
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# Datatypes (KEYWORD1)
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#######################################
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SAA1064 KEYWORD1
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#######################################
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# Methods and Functions (KEYWORD2)
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#######################################
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clear KEYWORD2
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displayInt KEYWORD2
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#######################################
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# Constants (LITERAL1)
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#######################################

‎SAA1064-library/libraries/SAA1064/saa1064.cpp‎

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/*
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* saa1064.cpp
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*
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* Copyright 2012 Warren Gill <[email protected]>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* Thanks to John Boxall at tronixstuff
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* Example 39.3 - NXP SAA1064 I2C LED Driver IC Demo III
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* Displaying numbers on command
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* http://tronixstuff.wordpress.com/tutorials > chapter 39
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* John Boxall July 2011 | CC by-sa-nc
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*/
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#include <Wire.h>
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#include <avr/pgmspace.h>
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#include "Arduino.h"
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#include "saa1064.h"
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// Byte representations of pins required to display each digit 0~9
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// then A~F, and blank digit
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int SAA1064::_digits[]={ 63, 6, 91, 79, 102, 109, 125,7, 127, 111, 119, 124, 57, 94, 121, 113, 0};
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uint8_t SAA1064::_brightness[]={
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(byte)B00000111, // 0ma
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(byte)B00010111, // 3ma
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(byte)B00100111, // 6ma
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(byte)B00110111, // 9ma
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(byte)B01000111, // 12ma
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(byte)B01100111, // 18ma
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(byte)B01110111 // 21ma
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};
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void SAA1064::begin(uint8_t ioaddr, int brightness) {
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// define the I2C address for the SAA1064
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_addr = ioaddr >> 1;
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if (brightness > 6) brightness = 6;
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Wire.begin(); // Start the I2C bus
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Wire.beginTransmission(_addr);
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Wire.write((byte)B00000000); // this is the instruction byte.
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// Zero means the next byte is the control byte
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// control byte (dynamic mode on, digits 1+3 on, digits 2+4 on,
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// 9mA segment current
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// Wire.write((byte)B00110111); // 9ma
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Wire.write(_brightness[brightness]);
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Wire.endTransmission();
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}
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void SAA1064::begin(uint8_t ioaddr) {
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begin(ioaddr, 2);
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}
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void SAA1064::begin() {
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begin(0x70, 2);
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}
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void SAA1064::clear() {
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Wire.beginTransmission(_addr);
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Wire.write(0x01); // start with digit 1 (right-hand side)
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Wire.write((byte)0); // blank digit 1
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Wire.write((byte)0); // blank digit 2
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Wire.write((byte)0); // blank digit 3
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Wire.write((byte)0); // blank digit 4
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Wire.endTransmission();
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}
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void SAA1064::setBrightness(int brightness) {
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if (brightness > 6) brightness = 6;
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Wire.beginTransmission(_addr);
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Wire.write((byte)B00000000); // this is the instruction byte.
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Wire.write(_brightness[brightness]);
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Wire.endTransmission();
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}
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/*
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displayInt
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displays the number 'num'
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zero = 0 - no leading zero
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zero = 1 - leading zero
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*/
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void SAA1064::displayInt(int num, int zero) {
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int thousand, hundred, ten, one;
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// breakdown number into columns
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thousand = num/1000;
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hundred = (num-(thousand*1000))/100;
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ten = (num-((thousand*1000)+(hundred*100)))/10;
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one = num-((thousand*1000)+(hundred*100)+(ten*10));
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if (zero==1) { // yes to leading zero
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Wire.beginTransmission(_addr);
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Wire.write(0x01);
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Wire.write(_digits[one]);
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Wire.write(_digits[ten]);
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Wire.write(_digits[hundred]);
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Wire.write(_digits[thousand]);
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Wire.endTransmission();
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delay(10);
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} else
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if (zero==0) { // no to leading zero
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if (thousand==0) {
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thousand=16;
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}
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if (hundred==0 && num<100) {
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hundred=16;
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}
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if (ten==0 && num<10) {
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ten=16;
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}
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Wire.beginTransmission(_addr);
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Wire.write(1);
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Wire.write(_digits[one]);
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Wire.write(_digits[ten]);
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Wire.write(_digits[hundred]);
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Wire.write(_digits[thousand]);
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Wire.endTransmission();
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delay(10);
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}
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}

‎SAA1064-library/libraries/SAA1064/saa1064.h‎

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/*
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* saa1064.h
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*
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* Copyright 2012 Warren Gill <[email protected]>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* Thanks to John Boxall at tronixstuff
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* NXP SAA1064 I2C LED Driver IC Demo
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* http://tronixstuff.wordpress.com/tutorials
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* John Boxall July 2011 | CC by-sa-nc
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*/
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#ifndef _SAA1064_H__
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#define _SAA1064_H__
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#define byte uint8_t
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class SAA1064 {
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public:
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void begin(uint8_t ioaddr, int brightness);
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void begin(uint8_t ioaddr);
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void begin(void);
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void setBrightness(int brightness);
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void clear();
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void displayInt(int num, int zero);
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private:
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static int _digits[];
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static uint8_t _brightness[];
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uint8_t _addr;
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};
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#endif

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