mirror of https://github.com/arendst/Tasmota.git
381 lines
9.5 KiB
C++
381 lines
9.5 KiB
C++
/*
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xdsp_11_sevenseg.ino - Display seven segment support for Tasmota
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Copyright (C) 2020 Theo Arends and Adafruit
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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 3 of the License, or
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(at your option) any later version.
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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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#ifdef USE_I2C
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#ifdef USE_DISPLAY
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#ifdef USE_DISPLAY_SEVENSEG
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#define XDSP_11 11
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#define XI2C_47 47 // See I2CDEVICES.md
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#include <Wire.h>
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#include <Adafruit_GFX.h>
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#include <Adafruit_LEDBackpack.h> // Seven segment LED
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Adafruit_7segment *sevenseg[8];
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uint8_t sevensegs = 0;
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uint8_t sevenseg_state = 0;
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/*********************************************************************************************/
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void SevensegWrite(void)
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{
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for (uint32_t i = 0; i < sevensegs; i++) {
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sevenseg[i]->writeDisplay();
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}
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}
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void SevensegClear(void)
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{
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for (uint32_t i = 0; i < sevensegs; i++) {
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sevenseg[i]->clear();
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}
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SevensegWrite();
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}
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/*********************************************************************************************/
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void SevensegInitMode(void)
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{
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for (uint32_t i = 0; i < sevensegs; i++) {
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sevenseg[i]->setBrightness(Settings.display_dimmer);
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sevenseg[i]->blinkRate(0);
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}
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SevensegClear();
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}
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void SevensegInit(uint8_t mode)
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{
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switch(mode) {
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case DISPLAY_INIT_MODE:
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case DISPLAY_INIT_PARTIAL:
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case DISPLAY_INIT_FULL:
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SevensegInitMode();
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break;
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}
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}
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void SevensegInitDriver(void)
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{
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if (!Settings.display_model) {
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if (I2cSetDevice(Settings.display_address[0])) {
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Settings.display_model = XDSP_11;
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}
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}
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if (XDSP_11 == Settings.display_model) {
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sevenseg_state = 1;
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for (sevensegs = 0; sevensegs < 8; sevensegs++) {
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if (Settings.display_address[sevensegs]) {
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I2cSetActiveFound(Settings.display_address[sevensegs], "SevenSeg");
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sevenseg[sevensegs] = new Adafruit_7segment();
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sevenseg[sevensegs]->begin(Settings.display_address[sevensegs]);
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} else {
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break;
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}
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}
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Settings.display_width = 4;
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Settings.display_height = sevensegs;
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SevensegInitMode();
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}
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}
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void SevensegOnOff(void)
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{
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if (!disp_power) { SevensegClear(); }
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}
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void SevensegDrawStringAt(uint16_t x, uint16_t y, char *str, uint16_t color, uint8_t flag)
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{
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enum OutNumType {DECIMAL, HEXADECIMAL, FLOAT, SEGMENTS};
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int16_t number = 0;
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double numberf = 0;
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boolean hasnumber= false;
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uint8_t dots= 0;
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OutNumType outnumtype= DECIMAL;
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uint8 fds = 0; // number of fractional digits for fp number
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boolean done= false;
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boolean s= false;
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uint8_t unit= y;
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char *buf;
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if ((unit>=sevensegs) || (unit<0)) {
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unit=0;
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}
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for (int i=0; (str[i]!='\0') && (!done); i++) {
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// [optional prefix(es) chars]digits
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// Some combinations won't make sense.
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// Reference: https://cdn-learn.adafruit.com/downloads/pdf/adafruit-led-backpack.pdf
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// This code has been tested on 1.2" and 0.56" 7-Segment LED displays, but should mostly work for others.
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//
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// Prefixes:
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// x upcoming decimal integer number displayed as hex
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// : turn on middle colon
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// ^ turn on top left dot
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// v turn on bottom left dot
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// . turn on AM/PM/Degree dot
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// s upcoming number is seconds, print as HH:MM or MM:SS
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// z clear this display
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// f upcoming number is floating point
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// r raw segment based on bitmap of upcoming integer number (see reference document above)
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//
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// Some sample valid combinations:
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// 787 -> 787
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// x47 -> 2F
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// s:241 -> 04:01
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// s241 -> 4 01
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// s1241 -> 20:41
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// z ->
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// x88 -> 58
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// f8.5 -> 8.5
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// f-9.34 -> -9.34
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// f:-9.34 -> -9.:34
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// r255 -> 8. (all 8 segments on)
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switch (str[i]) {
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case 'x': // print given dec value as hex
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// hex = true;
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outnumtype = HEXADECIMAL;
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break;
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case 'f': // given number is floating point number
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// fp = true;
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outnumtype = FLOAT;
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break;
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case ':': // print colon
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dots |= 0x02;
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break;
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case '^': // print top_left_dot
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dots |= 0x08;
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break;
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case 'v': // print bottom_left_dot
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dots |= 0x04;
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break;
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case '.': // print ampm
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dots |= 0x10;
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break;
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case 's': // duration in seconds
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s = true;
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break;
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case '-':
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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case '8':
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case '9':
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hasnumber= true;
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if (outnumtype == FLOAT) {
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// Floating point number is given
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numberf = atof(str+i);
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// Find number of fractional digits
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buf= str+i;
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char *cp= strchr(buf, '.');
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if (cp == NULL) {
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fds= 0;
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} else {
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fds= buf+strlen(buf) - 1 - cp;
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}
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} else {
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// Integer is given
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number = atoi(str+i);
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}
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done = true;
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break;
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case 'z': // Clear this display
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hasnumber=false;
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dots=0;
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s=false;
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sevenseg[unit]->clear();
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break;
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case 'r': // Raw segment
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outnumtype= SEGMENTS;
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break;
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default: // unknown format, ignore
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break;
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}
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}
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if (hasnumber) {
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if (s) {
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// number is duration in seconds
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int hour = number/60/60;
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int minute = (number/60)%60;
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if (hour) {
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// HH:MM
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number = hour*100 + minute;
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} else {
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// MM:SS
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number = minute*100 + number%60;
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}
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}
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if (outnumtype == HEXADECIMAL) {
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// Hex
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sevenseg[unit]->print(number, HEX);
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} else if (outnumtype == FLOAT) {
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// Floating point
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sevenseg[unit]->printFloat(numberf, fds, 10);
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} else if (outnumtype == SEGMENTS) {
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// Raw segments
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sevenseg[unit]->writeDigitRaw(x, number);
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} else {
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// Decimal
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sevenseg[unit]->print(number, DEC);
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}
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}
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if (dots) {
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sevenseg[unit]->writeDigitRaw(2, dots);
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}
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sevenseg[unit]->writeDisplay();
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}
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/*********************************************************************************************/
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#ifdef USE_DISPLAY_MODES1TO5
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void SevensegTime(boolean time_24)
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{
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uint hours = RtcTime.hour;
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uint minutes = RtcTime.minute;
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uint second = RtcTime.second;
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uint16_t displayValue = hours * 100 + minutes;
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uint16_t dots = 0;
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// Do 24 hour to 12 hour format conversion when required.
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if (!time_24) {
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// Handle when hours are past 12 by subtracting 12 hours (1200 value).
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if (hours > 12) {
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displayValue -= 1200;
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}
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// Handle hour 0 (midnight) being shown as 12.
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else if (hours == 0) {
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displayValue += 1200;
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}
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}
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// Now print the time value to the display.
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sevenseg[0]->print(displayValue, DEC);
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// Add zero padding when in 24 hour mode and it's midnight.
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// In this case the print function above won't have leading 0's
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// which can look confusing. Go in and explicitly add these zeros.
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if (time_24) {
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if (hours == 0) {
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// Pad hour 0.
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sevenseg[0]->writeDigitNum(1, 0);
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// Also pad when the 10's minute is 0 and should be padded.
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if (minutes < 10) {
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sevenseg[0]->writeDigitNum(3, 0);
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}
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}
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if (hours < 10) {
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// Always have 4 digits time
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sevenseg[0]->writeDigitNum(0, 0);
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}
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} else {
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// Identify and display AM/PM
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if (hours >= 12) {
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dots |= 0x10;
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}
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}
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sevenseg[0]->writeDigitRaw(2, dots |= ((second%2) << 1));
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sevenseg[0]->writeDisplay();
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}
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void SevensegRefresh(void) // Every second
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{
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if (disp_power) {
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if (Settings.display_mode) { // Mode 0 is User text
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switch (Settings.display_mode) {
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case 1: // Time 12
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SevensegTime(false);
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break;
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case 2: // Time 24
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SevensegTime(true);
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break;
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case 4: // Mqtt
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case 3: // Local
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case 5: { // Mqtt
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break;
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}
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}
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}
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}
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}
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#endif // USE_DISPLAY_MODES1TO5
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/*********************************************************************************************\
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* Interface
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\*********************************************************************************************/
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bool Xdsp11(uint8_t function)
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{
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if (!I2cEnabled(XI2C_47)) { return false; }
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bool result = false;
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if (FUNC_DISPLAY_INIT_DRIVER == function) {
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SevensegInitDriver();
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}
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else if (XDSP_11 == Settings.display_model) {
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switch (function) {
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case FUNC_DISPLAY_MODEL:
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result = true;
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break;
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case FUNC_DISPLAY_INIT:
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SevensegInit(dsp_init);
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break;
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case FUNC_DISPLAY_CLEAR:
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SevensegClear();
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break;
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#ifdef USE_DISPLAY_MODES1TO5
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case FUNC_DISPLAY_EVERY_SECOND:
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SevensegRefresh();
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break;
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#endif // USE_DISPLAY_MODES1TO5
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case FUNC_DISPLAY_POWER:
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SevensegOnOff();
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break;
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case FUNC_DISPLAY_DRAW_STRING:
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SevensegDrawStringAt(dsp_x, dsp_y, dsp_str, dsp_color, dsp_flag);
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break;
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}
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}
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return result;
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}
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#endif // USE_DISPLAY_SEVENSEG
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#endif // USE_DISPLAY
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#endif // USE_I2C
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