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Tasmota/tasmota/xdsp_11_sevenseg.ino
Christian Langanke 0747239d4c - for 7 segment displays 
- added support for FUNC_DISPLAY_DIM
  - added new FUNC_DISPLAY_BLINKRATE with new command DisplayBlinkrate
    Value is not being persistently stored, so no seting req.
  - added SevensegLog for DisplayMode 1..5 support, displaying the
    nth sensor value to nth atached 7-segment display.
    For that unsed display adresses before the first one being used
    may not be zero, but must be configured to unused addresses
    (e.g. 0xFF), otherwise driver init will fail.
2021-01-01 18:17:55 +01:00

470 lines
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/*
xdsp_11_sevenseg.ino - Display seven segment support for Tasmota
Copyright (C) 2021 Theo Arends and Adafruit
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef USE_I2C
#ifdef USE_DISPLAY
#ifdef USE_DISPLAY_SEVENSEG
#define XDSP_11 11
#define XI2C_47 47 // See I2CDEVICES.md
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_LEDBackpack.h> // Seven segment LED
Adafruit_7segment *sevenseg[8];
uint8_t sevensegs = 0;
uint8_t sevenseg_state = 0;
/*********************************************************************************************/
#ifdef USE_DISPLAY_SEVENSEG_COMMON_ANODE
void bufferStuffer(uint32_t i) {
uint8_t outArray[8] = {0,0,0,0,0,0,0,0};
uint8_t v;
for (int j = 0; j < 8; j++) {
for (int k = 0; k < 8; k++) {
v = ((sevenseg[i]->displaybuffer[j] >> k) & 1);
outArray[k] |= (v << j);
}
}
for (int j = 0; j < 8; j++) {
sevenseg[i]->displaybuffer[j] = outArray[j];
}
}
#endif
void SevensegWrite(void)
{
for (uint32_t i = 0; i < sevensegs; i++) {
#ifdef USE_DISPLAY_SEVENSEG_COMMON_ANODE
bufferStuffer(i);
#endif
sevenseg[i]->writeDisplay();
}
}
void SevensegLog(void)
{
// get sensor data
ResponseClear();
ResponseAppendTime();
XsnsCall(FUNC_JSON_APPEND);
ResponseJsonEnd();
// display nth sensor value on nth display
// code adapted from xdrv_13_display.ino, DisplayAnalyzeJson()
uint8_t unit = 0;
int16_t valueDecimal = 0;
double valueFloat = 0;
uint8 fDigits = 0;
String jsonStr = TasmotaGlobal.mqtt_data; // Move from stack to heap to fix watchdogs (20180626)
JsonParser parser((char*)jsonStr.c_str());
JsonParserObject object_root = parser.getRootObject();
if (object_root) {
for (auto key_level1 : object_root) {
JsonParserToken token_level1 = key_level1.getValue();
if (token_level1.isObject()) {
JsonParserObject object_level1 = token_level1.getObject();
for (auto key_level2 : object_level1) {
const char* value_level2 = key_level2.getValue().getStr(nullptr);
if (value_level2 != nullptr) {
if ((unit < sevensegs) && (sevenseg[unit] != nullptr)) {
if (strchr( value_level2, '.') == NULL) {
sevenseg[unit]->print(atoi(value_level2), DEC);
} else {
sevenseg[unit]->printFloat(atof(value_level2), 1, DEC);
}
sevenseg[unit]->writeDisplay();
unit++;
}
}
}
}
}
}
}
void SevensegDim(void)
{
for (uint32_t i = 0; i < sevensegs; i++) {
sevenseg[i]->setBrightness(Settings.display_dimmer);
}
}
void SevensegBlinkrate( void)
{
for (uint32_t i = 0; i < sevensegs; i++) {
sevenseg[i]->blinkRate(XdrvMailbox.payload);
}
}
void SevensegClear(void)
{
for (uint32_t i = 0; i < sevensegs; i++) {
sevenseg[i]->clear();
}
SevensegWrite();
}
/*********************************************************************************************/
void SevensegInitMode(void)
{
for (uint32_t i = 0; i < sevensegs; i++) {
sevenseg[i]->setBrightness(Settings.display_dimmer);
sevenseg[i]->blinkRate(0);
}
SevensegClear();
}
void SevensegInit(uint8_t mode)
{
switch(mode) {
case DISPLAY_INIT_MODE:
case DISPLAY_INIT_PARTIAL:
case DISPLAY_INIT_FULL:
SevensegInitMode();
break;
}
}
void SevensegInitDriver(void)
{
if (!Settings.display_model) {
if (I2cSetDevice(Settings.display_address[0])) {
Settings.display_model = XDSP_11;
}
}
if (XDSP_11 == Settings.display_model) {
sevenseg_state = 1;
for (sevensegs = 0; sevensegs < 8; sevensegs++) {
if (Settings.display_address[sevensegs]) {
I2cSetActiveFound(Settings.display_address[sevensegs], "SevenSeg");
sevenseg[sevensegs] = new Adafruit_7segment();
sevenseg[sevensegs]->begin(Settings.display_address[sevensegs]);
} else {
break;
}
}
Settings.display_width = 4;
Settings.display_height = sevensegs;
SevensegInitMode();
}
}
void SevensegOnOff(void)
{
if (!disp_power) { SevensegClear(); }
}
void SevensegDrawStringAt(uint16_t x, uint16_t y, char *str, uint16_t color, uint8_t flag)
{
enum OutNumType {DECIMAL, HEXADECIMAL, FLOAT, SEGMENTS};
int16_t number = 0;
double numberf = 0;
boolean hasnumber= false;
uint8_t dots= 0;
OutNumType outnumtype= DECIMAL;
uint8 fds = 0; // number of fractional digits for fp number
boolean done= false;
boolean s= false;
uint8_t unit= y;
char *buf;
if ((unit>=sevensegs) || (unit<0)) {
unit=0;
}
for (int i=0; (str[i]!='\0') && (!done); i++) {
// [optional prefix(es) chars]digits
// Some combinations won't make sense.
// Reference: https://cdn-learn.adafruit.com/downloads/pdf/adafruit-led-backpack.pdf
// This code has been tested on 1.2" and 0.56" 7-Segment LED displays, but should mostly work for others.
//
// Prefixes:
// x upcoming decimal integer number displayed as hex
// : turn on middle colon
// ^ turn on top left dot
// v turn on bottom left dot
// . turn on AM/PM/Degree dot
// s upcoming number is seconds, print as HH:MM or MM:SS
// z clear this display
// f upcoming number is floating point
// r raw segment based on bitmap of upcoming integer number (see reference document above)
//
// Some sample valid combinations:
// 787 -> 787
// x47 -> 2F
// s:241 -> 04:01
// s241 -> 4 01
// s1241 -> 20:41
// z ->
// x88 -> 58
// f8.5 -> 8.5
// f-9.34 -> -9.34
// f:-9.34 -> -9.:34
// r255 -> 8. (all 8 segments on)
switch (str[i]) {
case 'x': // print given dec value as hex
// hex = true;
outnumtype = HEXADECIMAL;
break;
case 'f': // given number is floating point number
// fp = true;
outnumtype = FLOAT;
break;
case ':': // print colon
dots |= 0x02;
break;
case '^': // print top_left_dot
dots |= 0x08;
break;
case 'v': // print bottom_left_dot
dots |= 0x04;
break;
case '.': // print ampm
dots |= 0x10;
break;
case 's': // duration in seconds
s = true;
break;
case '-':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
hasnumber= true;
if (outnumtype == FLOAT) {
// Floating point number is given
numberf = atof(str+i);
// Find number of fractional digits
buf= str+i;
char *cp= strchr(buf, '.');
if (cp == NULL) {
fds= 0;
} else {
fds= buf+strlen(buf) - 1 - cp;
}
} else {
// Integer is given
number = atoi(str+i);
}
done = true;
break;
case 'z': // Clear this display
hasnumber=false;
dots=0;
s=false;
sevenseg[unit]->clear();
break;
case 'r': // Raw segment
outnumtype= SEGMENTS;
break;
default: // unknown format, ignore
break;
}
}
if (hasnumber) {
if (s) {
// number is duration in seconds
int hour = number/60/60;
int minute = (number/60)%60;
if (hour) {
// HH:MM
number = hour*100 + minute;
} else {
// MM:SS
number = minute*100 + number%60;
}
}
if (outnumtype == HEXADECIMAL) {
// Hex
sevenseg[unit]->print(number, HEX);
} else if (outnumtype == FLOAT) {
// Floating point
sevenseg[unit]->printFloat(numberf, fds, 10);
} else if (outnumtype == SEGMENTS) {
// Raw segments
sevenseg[unit]->writeDigitRaw(x, number);
} else {
// Decimal
sevenseg[unit]->print(number, DEC);
}
}
if (dots) {
sevenseg[unit]->writeDigitRaw(2, dots);
}
#ifdef USE_DISPLAY_SEVENSEG_COMMON_ANODE
bufferStuffer(unit);
#endif
sevenseg[unit]->writeDisplay();
}
/*********************************************************************************************/
#ifdef USE_DISPLAY_MODES1TO5
void SevensegTime(boolean time_24)
{
uint hours = RtcTime.hour;
uint minutes = RtcTime.minute;
uint second = RtcTime.second;
uint16_t displayValue = hours * 100 + minutes;
uint16_t dots = 0;
// Do 24 hour to 12 hour format conversion when required.
if (!time_24) {
// Handle when hours are past 12 by subtracting 12 hours (1200 value).
if (hours > 12) {
displayValue -= 1200;
}
// Handle hour 0 (midnight) being shown as 12.
else if (hours == 0) {
displayValue += 1200;
}
}
// Now print the time value to the display.
sevenseg[0]->print(displayValue, DEC);
// Add zero padding when in 24 hour mode and it's midnight.
// In this case the print function above won't have leading 0's
// which can look confusing. Go in and explicitly add these zeros.
if (time_24) {
if (hours == 0) {
// Pad hour 0.
sevenseg[0]->writeDigitNum(1, 0);
// Also pad when the 10's minute is 0 and should be padded.
if (minutes < 10) {
sevenseg[0]->writeDigitNum(3, 0);
}
}
if (hours < 10) {
// Always have 4 digits time
sevenseg[0]->writeDigitNum(0, 0);
}
} else {
// Identify and display AM/PM
if (hours >= 12) {
dots |= 0x10;
}
}
sevenseg[0]->writeDigitRaw(2, dots |= ((second%2) << 1));
#ifdef USE_DISPLAY_SEVENSEG_COMMON_ANODE
bufferStuffer(0);
#endif
sevenseg[0]->writeDisplay();
}
void SevensegRefresh(void) // Every second
{
if (disp_power) {
if (Settings.display_mode) { // Mode 0 is User text
switch (Settings.display_mode) {
case 1: // Time 12
SevensegTime(false);
break;
case 2: // Time 24
SevensegTime(true);
break;
case 4: // Mqtt
case 3: // Local
case 5: { // Mqtt
SevensegLog();
break;
}
}
}
}
}
#endif // USE_DISPLAY_MODES1TO5
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
bool Xdsp11(uint8_t function)
{
if (!I2cEnabled(XI2C_47)) { return false; }
bool result = false;
if (FUNC_DISPLAY_INIT_DRIVER == function) {
SevensegInitDriver();
}
else if (XDSP_11 == Settings.display_model) {
switch (function) {
case FUNC_DISPLAY_MODEL:
result = true;
break;
case FUNC_DISPLAY_INIT:
SevensegInit(dsp_init);
break;
case FUNC_DISPLAY_CLEAR:
SevensegClear();
break;
#ifdef USE_DISPLAY_MODES1TO5
case FUNC_DISPLAY_EVERY_SECOND:
SevensegRefresh();
break;
#endif // USE_DISPLAY_MODES1TO5
case FUNC_DISPLAY_POWER:
SevensegOnOff();
break;
case FUNC_DISPLAY_DRAW_STRING:
SevensegDrawStringAt(dsp_x, dsp_y, dsp_str, dsp_color, dsp_flag);
break;
case FUNC_DISPLAY_DIM:
SevensegDim();
break;
case FUNC_DISPLAY_BLINKRATE:
SevensegBlinkrate();
break;
}
}
return result;
}
#endif // USE_DISPLAY_SEVENSEG
#endif // USE_DISPLAY
#endif // USE_I2C
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