Add support for M5Stack Unit6CL display

lib/lib_display/UDisplay/src/uDisplay_control.cpp

@@ -114,8 +114,19 @@ void uDisplay::dim10(uint8_t dim, uint16_t dim_gamma) {
         if (dim_op != 0xff) {
             spiController->beginTransaction();
             spiController->csLow();
+/*
+            M5Stack SSD1306 additional commands
+            spiController->writeCommand(0xD9);
+            spiController->writeCommand(((dimmer8+15)/17)*0x11);
+            spiController->writeCommand(0xDB);
+            spiController->writeCommand(dimmer8>>1);
+*/
             spiController->writeCommand(dim_op);
-            spiController->writeData8(dimmer8);
+            if (!allcmd_mode) {
+              spiController->writeData8(dimmer8);
+            } else {
+              spiController->writeCommand(dimmer8);
+            }
             spiController->csHigh();
             spiController->endTransaction();
         }

tasmota/displaydesc/M5Stack_Unit6CL_SSD1306_64x48_display.ini

@@ -0,0 +1,25 @@
+:H,SSD1306,64,48,1,SPI,1,6,20,21,18,*,15,22,10
+:S,1,1,1,0,8,20
+:IC
+AE,0
+D5,1,80
+A8,1,2F
+D3,1,00
+40,0
+20,1,00
+A0,0
+C0,0
+DB,1,10
+A4,0
+2E,0
+8D,1,14
+AF,0
+81,1,00
+D9,1,11
+DA,1,12
+:o,AE
+:O,AF
+:A,20,00,00,00
+:i,A6,A7
+:D,81
+#