Support up to 8 I2C Seven Segment Displays

tasmota/my_user_config.h

@@ -559,7 +559,7 @@
       #define MTX_ADDRESS7     0x00              // [DisplayAddress7] I2C address of seventh 8x8 matrix module
       #define MTX_ADDRESS8     0x00              // [DisplayAddress8] I2C address of eigth 8x8 matrix module
     #define USE_DISPLAY_SEVENSEG                 // [DisplayModel 11] [I2cDriver47] Enable sevenseg display (I2C 0x70-0x77) (<+11k code)
-      #define SEVENSEG_ADDRESS1     0x70         // [DisplayAddress1] I2C address of first sevenseg matrix module
+    // #define SEVENSEG_ADDRESS1     0x70      // No longer used.  Use MTX_ADDRESS1 - MTX_ADDRESS8 instead to specify I2C address of sevenseg displays
 //    #define USE_DISPLAY_SH1106                   // [DisplayModel 7] [I2cDriver6] Enable SH1106 Oled 128x64 display (I2C addresses 0x3C and 0x3D)
 #endif  // USE_I2C
 

tasmota/xdsp_11_sevenseg.ino

@@ -28,20 +28,24 @@
 #include <Adafruit_GFX.h>
 #include <Adafruit_LEDBackpack.h>  // Seven segment LED
 
-Adafruit_7segment sevenseg = Adafruit_7segment();
+Adafruit_7segment *sevenseg[8];
-
+uint8_t sevensegs = 0;
 uint8_t sevenseg_state = 0;
 
 /*********************************************************************************************/
 
 void SevensegWrite(void)
 {
-  sevenseg.writeDisplay();
+  for (uint32_t i = 0; i < sevensegs; i++) {
+    sevenseg[i]->writeDisplay();
+  }
 }
 
 void SevensegClear(void)
 {
-  sevenseg.clear();
+  for (uint32_t i = 0; i < sevensegs; i++) {
+    sevenseg[i]->clear();
+  }
   SevensegWrite();
 }
 
@@ -50,8 +54,10 @@ void SevensegClear(void)
 
 void SevensegInitMode(void)
 {
-  sevenseg.setBrightness(Settings.display_dimmer);
+  for (uint32_t i = 0; i < sevensegs; i++) {
-  sevenseg.blinkRate(0);               // 0 - 3
+    sevenseg[i]->setBrightness(Settings.display_dimmer);
+    sevenseg[i]->blinkRate(0);
+  }
   SevensegClear();
 }
 
@@ -69,17 +75,25 @@ void SevensegInit(uint8_t mode)
 void SevensegInitDriver(void)
 {
   if (!Settings.display_model) {
-    if (I2cSetDevice(SEVENSEG_ADDRESS1)) {
+    if (I2cSetDevice(Settings.display_address[0])) {
       Settings.display_model = XDSP_11;
     }
   }
 
   if (XDSP_11 == Settings.display_model) {
     sevenseg_state = 1;
-    sevenseg.begin(SEVENSEG_ADDRESS1);
+    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 = 1;
+    Settings.display_height = sevensegs;
 
     SevensegInitMode();
   }
@@ -101,15 +115,34 @@ void SevensegDrawStringAt(uint16_t x, uint16_t y, char *str, uint16_t color, uin
   boolean hex=false;
   boolean done=false;
   boolean s=false;
+  uint8_t unit=y;
+  if ((unit>=sevensegs) || (unit<0)) {
+    unit=0;
+  }
+
   for (int i=0; (str[i]!='\0') && (!done); i++) {
-    // [prefix(es) chars]digits
+    // [optional prefix(es) chars]digits
     // Some combinations won't make sense.
     // Reference: https://learn.adafruit.com/adafruit-led-backpack/1-2-inch-7-segment-backpack-arduino-wiring-and-setup
+    // 
+    // Prefixes:
+    // x  upcoming number decimal integer displayed as hex
+    // :  turn on middle colon
+    // ^  turh 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
+    // 
     // Some sample valid combinations:
-    // 787 -> 787
+    // 787    -> 787
-    // x47 -> 2F
+    // x47    -> 2F
-    // st:241 -> 04:01
+    // s:241  -> 04:01
-    // sT241 -> 4 01
+    // s241   -> 4 01
+    // s1241  -> 20:41
+    // z      ->
+    // x88    -> 58
+
     switch (str[i]) {
       case 'x': // print given dec value as hex
         hex = true;
@@ -126,12 +159,6 @@ void SevensegDrawStringAt(uint16_t x, uint16_t y, char *str, uint16_t color, uin
       case '.': // print ampm
         dots |= 0x10;
         break;
-      case 'T': // print as time 12 format
-        t = true;
-        break;
-      case 't': // print as time 24 format
-        T = true;
-        break;
       case 's': // duration in seconds
         s = true;
         break;
@@ -149,6 +176,12 @@ void SevensegDrawStringAt(uint16_t x, uint16_t y, char *str, uint16_t color, uin
         number = atoi(str+i);
         done = true;
         break;
+      case 'z': // Clear this display
+        hasnumber=false;
+        dots=0;
+        s=false;
+        sevenseg[unit]->clear();
+        break;
       default: // unknown format, ignore
         break;
     }
@@ -171,17 +204,17 @@ void SevensegDrawStringAt(uint16_t x, uint16_t y, char *str, uint16_t color, uin
 
   if (hasnumber) {
     if (hex) {
-      sevenseg.print(number, HEX);
+      sevenseg[unit]->print(number, HEX);
     } else {
-      sevenseg.print(number, DEC);
+      sevenseg[unit]->print(number, DEC);
     }
   }
 
   if (dots) {
-    sevenseg.writeDigitRaw(2, dots);
+    sevenseg[unit]->writeDigitRaw(2, dots);
   }
 
-  sevenseg.writeDisplay();
+  sevenseg[unit]->writeDisplay();
 }
 
 /*********************************************************************************************/
@@ -210,7 +243,7 @@ void SevensegTime(boolean time_24)
 
 
   // Now print the time value to the display.
-  sevenseg.print(displayValue, DEC);
+  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
@@ -218,15 +251,15 @@ void SevensegTime(boolean time_24)
   if (time_24) {
     if (hours == 0) {
       // Pad hour 0.
-      sevenseg.writeDigitNum(1, 0);
+      sevenseg[0]->writeDigitNum(1, 0);
       // Also pad when the 10's minute is 0 and should be padded.
       if (minutes < 10) {
-        sevenseg.writeDigitNum(3, 0);
+        sevenseg[0]->writeDigitNum(3, 0);
       }
     }
     if (hours < 10) {
       // Always have 4 digits time
-      sevenseg.writeDigitNum(0, 0);
+      sevenseg[0]->writeDigitNum(0, 0);
     }
   } else {
     // Identify and display AM/PM
@@ -235,8 +268,8 @@ void SevensegTime(boolean time_24)
     }
   }
 
-  sevenseg.writeDigitRaw(2, dots |= ((second%2) << 1));
+  sevenseg[0]->writeDigitRaw(2, dots |= ((second%2) << 1));
-  sevenseg.writeDisplay();
+  sevenseg[0]->writeDisplay();
 }
 
 void SevensegRefresh(void)  // Every second