ssd1351 support for 4 wire spi

lib/lib_display/Adafruit_SSD1351-gemu-1.0/SSD1351.cpp

@@ -22,11 +22,12 @@ const uint16_t ssd1351_colors[]={SSD1351_BLACK,SSD1351_WHITE,SSD1351_RED,SSD1351
 SSD1351_LIGHTGREY,SSD1351_DARKGREY,SSD1351_ORANGE,SSD1351_GREENYELLOW,SSD1351_PINK};
 
 // Constructor when using software SPI.  All output pins are configurable.
-SSD1351::SSD1351(int8_t cs,int8_t mosi,int8_t sclk) : Renderer(SSD1351_WIDTH, SSD1351_HEIGHT) {
+SSD1351::SSD1351(int8_t cs,int8_t mosi,int8_t sclk, int8_t dc) : Renderer(SSD1351_WIDTH, SSD1351_HEIGHT) {
   _cs   = cs;
   _mosi  = mosi;
   _sclk = sclk;
   _hwspi = 0;
+  _dc = dc;
 }
 
 #ifndef ESP32
@@ -70,6 +71,9 @@ uint32_t ssd1351_mtdo_prev;
 void SSD1351::spi_lcd_mode_init(void) {
 	uint32 regvalue;
 
+  if (_dc >= 0) {
+    spis = SPISettings(40000000, MSBFIRST, SPI_MODE0);
+  } else {
     ssd1351_clock_prev=SPI1CLK;
     ssd1351_usr_prev=SPI1U;
     ssd1351_usr1_prev=SPI1U1;
@@ -120,12 +124,17 @@ void SSD1351::spi_lcd_mode_init(void) {
     ssd1351_spi1p=SPI1P;
     //ssd1351_gpmux=GPMUX;
     ssd1351_mtdo=READ_PERI_REG(PERIPHS_IO_MUX_MTDO_U);
+  }
+
   ssd131_start = 0;
 }
 
 void SSD1351::start(void) {
   if (ssd131_start) return;
   //while(SPI1CMD & SPIBUSY) {}
+  if (_dc >= 0) {
+    SPI.beginTransaction(spis);
+  } else {
     while(READ_PERI_REG(SPI_CMD(1))&SPI_USR);
     SPI1CLK=ssd1351_clock;
     SPI1U=ssd1351_usr;
@@ -135,11 +144,16 @@ void SSD1351::start(void) {
     SPI1P=ssd1351_spi1p;
     //GPMUX=ssd1351_gpmux;
     WRITE_PERI_REG(PERIPHS_IO_MUX_MTDO_U,ssd1351_mtdo);
+  }
   ssd131_start = 1;
 }
 
 void SSD1351::stop(void) {
   if (!ssd131_start) return;
+
+  if (_dc >= 0) {
+    SPI.endTransaction();
+  } else {
     //while(SPI1CMD & SPIBUSY) {}
     while(READ_PERI_REG(SPI_CMD(1))&SPI_USR);
     SPI1CLK=ssd1351_clock_prev;
@@ -150,6 +164,7 @@ void SSD1351::stop(void) {
     SPI1P=ssd1351_spi1p_prev;
     //GPMUX=ssd1351_gpmux_prev;
     WRITE_PERI_REG(PERIPHS_IO_MUX_MTDO_U,ssd1351_mtdo_prev);
+  }
   ssd131_start = 0;
 }
 
@@ -158,19 +173,23 @@ void SSD1351::writecommand(uint8_t c) {
   if (_hwspi) {
     uint32_t regvalue;
     uint8_t bytetemp;
-    bytetemp=(c>>1)&0x7f;
-
     start();
-
 //#define SPI_USR_COMMAND_BITLEN 0x0000000F
 //#define SPI_USR_COMMAND_BITLEN_S 28
-
+    if (_dc >= 0) {
+      digitalWrite(_dc, LOW);
+      SPI.transfer(c);
+    } else {
+      bytetemp = (c >> 1) & 0x7f;
       regvalue= ((8&SPI_USR_COMMAND_BITLEN)<<SPI_USR_COMMAND_BITLEN_S)|((uint32)bytetemp);		//configure transmission variable,9bit transmission length and first 8 command bit
       if (c & 0x01) 	regvalue |= BIT15;        //write the 9th bit
       while (READ_PERI_REG(SPI_CMD(1)) & SPI_USR);		//waiting for spi module available
       WRITE_PERI_REG(SPI_USER2(1), regvalue);				//write  command and command length into spi reg
       SET_PERI_REG_MASK(SPI_CMD(1), SPI_USR);		//transmission start
-  } else fastSPIwrite(c,0);
+    }
+  } else {
+    fastSPIwrite(c, 0);
+  }
 }
 
 // dc = 1
@@ -178,37 +197,53 @@ void SSD1351::writedata(uint8_t d) {
   if (_hwspi) {
     uint32_t regvalue;
     uint8_t bytetemp;
-    bytetemp=(d>>1)|0x80;
-
     start();
 
+    if (_dc >= 0) {
+      digitalWrite(_dc, HIGH);
+      SPI.transfer(d);
+    } else {
+      bytetemp = (d >> 1) | 0x80;
       regvalue= ((8&SPI_USR_COMMAND_BITLEN)<<SPI_USR_COMMAND_BITLEN_S)|((uint32)bytetemp);		//configure transmission variable,9bit transmission length and first 8 command bit
       if(d&0x01) 	regvalue|=BIT15;        //write the 9th bit
       while(READ_PERI_REG(SPI_CMD(1))&SPI_USR);		//waiting for spi module available
       WRITE_PERI_REG(SPI_USER2(1), regvalue);				//write  command and command length into spi reg
       SET_PERI_REG_MASK(SPI_CMD(1), SPI_USR);		//transmission start
-  } else  fastSPIwrite(d,1);
+    }
+  } else {
+    fastSPIwrite(d, 1);
+  }
 }
 
 
 void ICACHE_RAM_ATTR SSD1351::fastSPIwrite(uint8_t d, uint8_t dc) {
 
   WRITE_PERI_REG( PIN_OUT_CLEAR, 1 << _cs);
-  WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
-  if(dc) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
-  else   WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
-  WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
 
+  if (_dc >= 0) {
+    digitalWrite(_dc, dc);
+    WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
     for(uint8_t bit = 0x80; bit; bit >>= 1) {
       WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
       if(d&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
       else   WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
       WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
     }
+  } else {
+    WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
+    if(dc) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
+    else   WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
+    WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
+    for(uint8_t bit = 0x80; bit; bit >>= 1) {
+      WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_sclk);
+      if(d&bit) WRITE_PERI_REG( PIN_OUT_SET, 1<<_mosi);
+      else   WRITE_PERI_REG( PIN_OUT_CLEAR, 1<<_mosi);
+      WRITE_PERI_REG( PIN_OUT_SET, 1<<_sclk);
+    }
+  }
   WRITE_PERI_REG( PIN_OUT_SET, 1 << _cs);
 }
 
-
 #else
 // ESP32 section
 uint8_t ssd131_start;
@@ -227,12 +262,10 @@ void SSD1351::writecommand(uint8_t c) {
 #include "esp32-hal.h"
 #include "soc/spi_struct.h"
 
-SPISettings oled_spiSettings;
-
 // diconnect from spi
 void SSD1351::start(void) {
   if (ssd131_start) return;
-  SPI.beginTransaction(oled_spiSettings);
+  SPI.beginTransaction(spis);
   ssd131_start = 1;
 }
 
@@ -246,8 +279,12 @@ void SSD1351::stop(void) {
 // since ardunio transferBits ia completely disfunctional
 // we use our own hardware driver for 9 bit spi
 void SSD1351::fastSPIwrite(uint8_t d, uint8_t dc) {
-    digitalWrite( _cs, LOW);
 
+    digitalWrite( _cs, LOW);
+    if (_dc >= 0) {
+      digitalWrite(_dc, dc);
+      SPI.transfer(d);
+    } else {
       uint32_t regvalue = d >> 1;
       if (dc) regvalue |= 0x80;
       else regvalue &= 0x7f;
@@ -259,7 +296,7 @@ void SSD1351::fastSPIwrite(uint8_t d,uint8_t dc) {
       *dp = regvalue;
       REG_SET_BIT(SPI_CMD_REG(3), SPI_USR);
       while (REG_GET_FIELD(SPI_CMD_REG(3), SPI_USR));
-
+    }
     digitalWrite( _cs, HIGH);
 }
 
@@ -312,6 +349,11 @@ void SSD1351::begin(void) {
   pinMode(_mosi, OUTPUT);
   digitalWrite(_mosi, LOW);
 
+  if (_dc >= 0) {
+    pinMode(_dc, OUTPUT);
+    digitalWrite(_dc, LOW);
+  }
+
 
 #ifndef ESP32
   if ((_sclk == 14) && (_mosi == 13) && (_cs == 15)) {
@@ -326,7 +368,7 @@ void SSD1351::begin(void) {
 #else
   _hwspi = 1;
   SPI.begin(_sclk, -1, _mosi, -1);
-  oled_spiSettings = SPISettings(4500000, MSBFIRST, SPI_MODE3);
+  spis = SPISettings(4500000, MSBFIRST, SPI_MODE3);
 #endif
 
   const uint8_t *addr = (const uint8_t *)initList;

lib/lib_display/Adafruit_SSD1351-gemu-1.0/SSD1351.h

@@ -93,7 +93,7 @@ class SSD1351 : public Renderer {
 
  public:
 
-  SSD1351(int8_t cs,int8_t mosi,int8_t sclk);
+  SSD1351(int8_t cs,int8_t mosi,int8_t sclk, int8_t dc);
 
   void begin(void);
   void DisplayInit(int8_t p,int8_t size,int8_t rot,int8_t font);
@@ -119,10 +119,11 @@ class SSD1351 : public Renderer {
 
  private:
   uint8_t  tabcolor;
+  SPISettings spis;
   void fastSPIwrite(uint8_t d,uint8_t dc);
   void start(void);
   void stop(void);
-  int8_t  _cs, _mosi, _sclk, _hwspi;
+  int8_t  _cs, _mosi, _sclk, _hwspi, _dc;
 
 };
 

tasmota/language/af_AF.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/bg_BG.h

@@ -782,6 +782,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/cs_CZ.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/de_DE.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/el_GR.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/en_GB.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/es_ES.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/fr_FR.h

@@ -779,6 +779,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/fy_NL.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/he_HE.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/hu_HU.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/it_IT.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 - CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 - CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 - CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 - DC"
 #define D_SENSOR_RA8876_CS     "RA8876 - CS"
 #define D_SENSOR_ST7789_CS     "ST7789 - CS"
 #define D_SENSOR_ST7789_DC     "ST7789 - DC"

tasmota/language/ko_KO.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/nl_NL.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/pl_PL.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/pt_BR.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/pt_PT.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/ro_RO.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/ru_RU.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/sk_SK.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/sv_SE.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/tr_TR.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/uk_UA.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/vi_VN.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/zh_CN.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/language/zh_TW.h

@@ -783,6 +783,7 @@
 #define D_SENSOR_EPAPER29_CS   "EPaper29 CS"
 #define D_SENSOR_EPAPER42_CS   "EPaper42 CS"
 #define D_SENSOR_SSD1351_CS    "SSD1351 CS"
+#define D_SENSOR_SSD1351_DC    "SSD1351 DC"
 #define D_SENSOR_RA8876_CS     "RA8876 CS"
 #define D_SENSOR_ST7789_CS     "ST7789 CS"
 #define D_SENSOR_ST7789_DC     "ST7789 DC"

tasmota/tasmota_template.h

@@ -151,6 +151,7 @@ enum UserSelectablePins {
   GPIO_SDM72_TX, GPIO_SDM72_RX,        // SDM72 Serial interface
   GPIO_TM1637CLK, GPIO_TM1637DIO,      // TM1637 interface
   GPIO_PROJECTOR_CTRL_TX, GPIO_PROJECTOR_CTRL_RX,  // LCD/DLP Projector Serial Control
+  GPIO_SSD1351_DC,
   GPIO_SENSOR_END };
 
 enum ProgramSelectablePins {
@@ -322,6 +323,7 @@ const char kSensorNames[] PROGMEM =
   D_SENSOR_SDM72_TX "|" D_SENSOR_SDM72_RX "|"
   D_SENSOR_TM1637_CLK "|" D_SENSOR_TM1637_DIO "|"
   D_SENSOR_PROJECTOR_CTRL_TX "|" D_SENSOR_PROJECTOR_CTRL_RX "|"
+  D_SENSOR_SSD1351_DC "|"
   ;
 
 const char kSensorNamesFixed[] PROGMEM =
@@ -423,6 +425,7 @@ const uint16_t kGpioNiceList[] PROGMEM = {
 #endif  // USE_DISPLAY_EPAPER_42
 #ifdef USE_DISPLAY_SSD1351
   AGPIO(GPIO_SSD1351_CS),
+  AGPIO(GPIO_SSD1351_DC),
 #endif  // USE_DISPLAY_SSD1351
 #ifdef USE_DISPLAY_RA8876
   AGPIO(GPIO_RA8876_CS),
@@ -766,7 +769,6 @@ const uint16_t kGpioNiceList[] PROGMEM = {
   AGPIO(GPIO_PROJECTOR_CTRL_TX),      // LCD/DLP Projector Serial Control
   AGPIO(GPIO_PROJECTOR_CTRL_RX),      // LCD/DLP Projector Serial Control
 #endif
-
 /*-------------------------------------------------------------------------------------------*\
  * ESP32 specifics
 \*-------------------------------------------------------------------------------------------*/

tasmota/xdsp_09_SSD1351.ino

@@ -59,12 +59,25 @@ void SSD1351_InitDriver() {
     fg_color = SSD1351_WHITE;
     bg_color = SSD1351_BLACK;
 
+
+#ifdef SSD1351_DC
+    int8_t dcpin = SSD1351_DC;
+#else
+    int8_t dcpin = -1;
+#endif
+
+#ifdef GPIO_SSD1351_DC
+    if (PinUsed(GPIO_SSD1351_DC)) {
+      dcpin = Pin(GPIO_SSD1351_DC);
+    }
+#endif
+
     // init renderer
     if (TasmotaGlobal.soft_spi_enabled){
-      ssd1351 = new SSD1351(Pin(GPIO_SSD1351_CS), Pin(GPIO_SSPI_MOSI), Pin(GPIO_SSPI_SCLK));
+      ssd1351 = new SSD1351(Pin(GPIO_SSD1351_CS), Pin(GPIO_SSPI_MOSI), Pin(GPIO_SSPI_SCLK), dcpin);
     }
     else if (TasmotaGlobal.spi_enabled) {
-      ssd1351 = new SSD1351(Pin(GPIO_SSD1351_CS), Pin(GPIO_SPI_MOSI), Pin(GPIO_SPI_CLK));
+      ssd1351 = new SSD1351(Pin(GPIO_SSD1351_CS), Pin(GPIO_SPI_MOSI), Pin(GPIO_SPI_CLK), dcpin);
     }
 
     delay(100);