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135 lines
3.5 KiB
135 lines
3.5 KiB
/*
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TM1638.cpp - Library implementation for TM1638.
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Copyright (C) 2011 Ricardo Batista (rjbatista <at> gmail <dot> com)
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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 version 3 GNU General Public License as
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published by the Free Software Foundation.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#if defined(ARDUINO) && ARDUINO >= 100
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#include "Arduino.h"
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#else
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#include "WProgram.h"
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#endif
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#include "TM1638.h"
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#include "string.h"
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TM1638::TM1638(byte dataPin, byte clockPin, byte strobePin, boolean activateDisplay, byte intensity)
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: TM16XX(dataPin, clockPin, strobePin, 8, activateDisplay, intensity)
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{
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// nothing else to do - calling super is enough
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}
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void TM1638::setDisplayToHexNumber(unsigned long number, byte dots, boolean leadingZeros,
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const byte numberFont[])
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{
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for (int i = 0; i < displays; i++) {
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if (!leadingZeros && number == 0) {
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clearDisplayDigit(displays - i - 1, (dots & (1 << i)) != 0);
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} else {
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setDisplayDigit(number & 0xF, displays - i - 1, (dots & (1 << i)) != 0, numberFont);
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number >>= 4;
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}
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}
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}
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void TM1638::setDisplayToDecNumberAt(unsigned long number, byte dots, byte startingPos, boolean leadingZeros,
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const byte numberFont[])
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{
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if (number > 99999999L) {
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setDisplayToError();
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} else {
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for (int i = 0; i < displays - startingPos; i++) {
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if (number != 0) {
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setDisplayDigit(number % 10, displays - i - 1, (dots & (1 << i)) != 0, numberFont);
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number /= 10;
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} else {
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if (leadingZeros) {
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setDisplayDigit(0, displays - i - 1, (dots & (1 << i)) != 0, numberFont);
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} else {
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clearDisplayDigit(displays - i - 1, (dots & (1 << i)) != 0);
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}
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}
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}
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}
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}
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void TM1638::setDisplayToDecNumber(unsigned long number, byte dots, boolean leadingZeros,
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const byte numberFont[])
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{
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setDisplayToDecNumberAt(number, dots, 0, leadingZeros, numberFont);
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}
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void TM1638::setDisplayToSignedDecNumber(signed long number, byte dots, boolean leadingZeros,
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const byte numberFont[])
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{
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if (number >= 0) {
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setDisplayToDecNumberAt(number, dots, 0, leadingZeros, numberFont);
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} else {
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if (-number > 9999999L) {
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setDisplayToError();
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} else {
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setDisplayToDecNumberAt(-number, dots, 1, leadingZeros, numberFont);
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sendChar(0, MINUS, (dots & (0x80)) != 0);
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}
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}
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}
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void TM1638::setDisplayToBinNumber(byte number, byte dots, const byte numberFont[])
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{
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for (int i = 0; i < displays; i++) {
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setDisplayDigit((number & (1 << i)) == 0 ? 0 : 1, displays - i - 1, (dots & (1 << i)) != 0, numberFont);
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}
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}
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void TM1638::setLED(byte color, byte pos)
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{
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sendData((pos << 1) + 1, color);
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}
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void TM1638::setLEDs(word leds)
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{
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for (int i = 0; i < displays; i++) {
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byte color = 0;
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if ((leds & (1 << i)) != 0) {
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color |= TM1638_COLOR_RED;
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}
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if ((leds & (1 << (i + 8))) != 0) {
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color |= TM1638_COLOR_GREEN;
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}
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setLED(color, i);
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}
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}
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byte TM1638::getButtons(void)
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{
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byte keys = 0;
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digitalWrite(strobePin, LOW);
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send(0x42);
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for (int i = 0; i < 4; i++) {
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keys |= receive() << i;
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}
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digitalWrite(strobePin, HIGH);
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return keys;
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}
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void TM1638::sendChar(byte pos, byte data, boolean dot)
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{
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sendData(pos << 1, data | (dot ? 0b10000000 : 0));
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}
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