2.4.1

examples/page_buffer/ExtUTF8/ExtUTF8.ino

@@ -65,7 +65,7 @@
 //U8G2_SSD1306_128X64_NONAME_1_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);   // All Boards without Reset of the Display
 //U8G2_SSD1306_128X64_NONAME_1_6800 u8g2(U8G2_R0, 13, 11, 2, 3, 4, 5, 6, A4, /*enable=*/ 7, /*cs=*/ 10, /*dc=*/ 9, /*reset=*/ 8);
 //U8G2_SSD1306_128X64_NONAME_1_8080 u8g2(U8G2_R0, 13, 11, 2, 3, 4, 5, 6, A4, /*enable=*/ 7, /*cs=*/ 10, /*dc=*/ 9, /*reset=*/ 8);
-U8G2_SH1106_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
+//U8G2_SH1106_128X64_NONAME_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
 //U8G2_SSD1306_128X32_UNIVISION_1_SW_I2C u8g2(U8G2_R0, /* clock=*/ 21, /* data=*/ 20, /* reset=*/ U8X8_PIN_NONE);   // Adafruit Feather M0 Basic Proto + FeatherWing OLED
 //U8G2_SSD1306_128X32_UNIVISION_1_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);   // Adafruit Feather ESP8266/32u4 Boards + FeatherWing OLED
 //U8G2_SSD1306_128X32_UNIVISION_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);   // Adafruit ESP8266/32u4/ARM Boards + FeatherWing OLED

extras/ChangeLog

@@ -36,5 +36,6 @@ https://github.com/olikraus/u8g2 ChangeLog
  * Fixed ST7920 HW SPI with very fast uC, issue 50
  * Improved HW SPI for SH1106 and SSD1306 displays
  * Fixed issue with missing fonts
-2016-xx-xx	v2.4.x	olikraus@gmail.com
-
+2016-08-21	v2.4.1	olikraus@gmail.com
+ * Fixed HW SPI Modes (issue 52)
+ 

library.properties

@@ -1,5 +1,5 @@
 name=U8g2
-version=2.4.0
+version=2.4.1
 author=oliver <olikraus@gmail.com>
 maintainer=oliver <olikraus@gmail.com>
 sentence=Library for monochrome LCDs and OLEDs. Successor of U8glib.

src/U8x8lib.cpp

@@ -278,6 +278,7 @@ extern "C" uint8_t u8x8_byte_arduino_hw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t a
 {
 #ifdef U8X8_HAVE_HW_SPI
   uint8_t *data;
+  uint8_t internal_spi_mode;
  
   switch(msg)
   {
@@ -310,8 +311,18 @@ extern "C" uint8_t u8x8_byte_arduino_hw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t a
       break;
       
     case U8X8_MSG_BYTE_START_TRANSFER:
+      /* SPI mode has to be mapped to the mode of the current controller, at least Uno, Due, 101 have different SPI_MODEx values */
+      internal_spi_mode =  0;
+      switch(u8x8->display_info->spi_mode)
+      {
+	case 0: internal_spi_mode = SPI_MODE0; break;
+	case 1: internal_spi_mode = SPI_MODE1; break;
+	case 2: internal_spi_mode = SPI_MODE2; break;
+	case 3: internal_spi_mode = SPI_MODE3; break;
+      }
+      
 #if ARDUINO >= 10600
-      SPI.beginTransaction(SPISettings(u8x8->display_info->sck_clock_hz, MSBFIRST, u8x8->display_info->spi_mode));
+      SPI.beginTransaction(SPISettings(u8x8->display_info->sck_clock_hz, MSBFIRST, internal_spi_mode));
 #else
       SPI.begin();
       
@@ -321,7 +332,7 @@ extern "C" uint8_t u8x8_byte_arduino_hw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t a
 	SPI.setClockDivider( SPI_CLOCK_DIV4 );
       else
 	SPI.setClockDivider( SPI_CLOCK_DIV8 );
-      SPI.setDataMode(u8x8->display_info->spi_mode);
+      SPI.setDataMode(internal_spi_mode);
       SPI.setBitOrder(MSBFIRST);
 #endif
       
@@ -343,6 +354,8 @@ extern "C" uint8_t u8x8_byte_arduino_hw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t a
     default:
       return 0;
   }
+  
+#else
 #endif
   return 1;
 }

src/clib/u8x8.h

@@ -215,10 +215,10 @@ struct u8x8_display_info_struct
   uint32_t sck_clock_hz;
   
   /* previous name "sck_takeover_edge" renamed to "spi_mode" */
-  /* bit 0 of spi_mode is equal to the value of the previous variable sck_takeover_edge */ 
+  /* bit 0 of spi_mode is equal to the value of the previous variable sck_takeover_edge, 20 Aug 16: This is wrong the bit is actually inverted */ 
   /* SPI has four clock modes: */
-  /*   0: clock active high, data out on falling edge */
-  /*   1: clock active high, data out on rising edge */
+  /*   0: clock active high, data out on falling edge, clock default value is zero, takover on rising edge */
+  /*   1: clock active high, data out on rising edge, clock default value is zero, takover on falling edge */
   /*   2: clock active low, data out on rising edge */
   /*   3: clock active low, data out on falling edge */
   /* most displays have clock mode 1 */
@@ -322,8 +322,9 @@ struct u8x8_struct
 #define u8x8_GetRows(u8x8) ((u8x8)->display_info->tile_height)
 #define u8x8_GetI2CAddress(u8x8) ((u8x8)->i2c_address)
 #define u8x8_SetGPIOResult(u8x8, val) ((u8x8)->gpio_result = (val))
-#define u8x8_GetSPIClockPhase(u8x8) ((u8x8)->display_info->spi_mode & 0x01)  /* this returns "sck_takeover_edge" */
+#define u8x8_GetSPIClockPhase(u8x8) ((u8x8)->display_info->spi_mode & 0x01)  /* 0 means rising edge */
 #define u8x8_GetSPIClockPolarity(u8x8) (((u8x8)->display_info->spi_mode & 0x02) >> 1)
+#define u8x8_GetSPIClockDefaultLevel(u8x8) (((u8x8)->display_info->spi_mode & 0x02) >> 1)
 
 
 #ifdef U8X8_USE_PINS 

src/clib/u8x8_cad.c

@@ -321,8 +321,11 @@ uint8_t u8x8_cad_st7920_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *ar
     case U8X8_MSG_CAD_SEND_CMD:
       //u8x8_byte_SetDC(u8x8, 0);
       u8x8_byte_SendByte(u8x8, 0x0f8);
+      u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, 1);
       u8x8_byte_SendByte(u8x8, arg_int & 0x0f0);
+      u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, 1);
       u8x8_byte_SendByte(u8x8, arg_int << 4);
+      u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, 1);
       break;
     case U8X8_MSG_CAD_SEND_ARG:
       //u8x8_byte_SetDC(u8x8, 0);
@@ -334,6 +337,7 @@ uint8_t u8x8_cad_st7920_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *ar
       //u8x8_byte_SetDC(u8x8, 1);
     
       u8x8_byte_SendByte(u8x8, 0x0fa);
+      u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, 1);
 
       /* this loop should be optimized: multiple bytes should be sent */
       /* u8x8_byte_SendBytes(u8x8, arg_int, arg_ptr); */
@@ -348,6 +352,7 @@ uint8_t u8x8_cad_st7920_spi(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *ar
 	data++;
 	arg_int--;
       }
+      u8x8_gpio_Delay(u8x8, U8X8_MSG_DELAY_NANO, 1);
       break;
     case U8X8_MSG_CAD_INIT:
     case U8X8_MSG_CAD_START_TRANSFER:

src/clib/u8x8_d_a2printer.c

@@ -150,7 +150,7 @@ static const u8x8_display_info_t u8x8_a2printer_384x240_display_info =
   /* sda_setup_time_ns = */ 20,		
   /* sck_pulse_width_ns = */  140,	
   /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		/* old: sck_takeover_edge, new: active high (bit 1), rising edge (bit 0) */
+  /* spi_mode = */ 0,		/* old: sck_takeover_edge, new: active high (bit 1), rising edge (bit 0) */
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 30,
   /* write_pulse_width_ns = */ 40,

src/clib/u8x8_d_ld7032_60x32.c

@@ -182,7 +182,7 @@ static const u8x8_display_info_t u8x8_ld7032_60x32_display_info =
   /* sda_setup_time_ns = */ 30,		/* 20ns, but cycle time is 60ns, so use 60/2 */
   /* sck_pulse_width_ns = */ 30,	/* 20ns, but cycle time is 60ns, so use 60/2  */
   /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		/* active high, rising edge */
+  /* spi_mode = */ 0,		/* active high, rising edge */
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 20,
   /* write_pulse_width_ns = */ 40,	

src/clib/u8x8_d_ls013b7dh03.c

@@ -55,7 +55,7 @@ static const u8x8_display_info_t u8x8_ls013b7dh03_128x128_display_info =
   /* sda_setup_time_ns = */ 227,	/* 227 nsec according to the datasheet */		
   /* sck_pulse_width_ns = */  255,	/* 450 nsec according to the datasheet */
   /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 3,		/* active low, rising edge */
+  /* spi_mode = */ 2,		/* active low, rising edge */
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 100,
   /* write_pulse_width_ns = */ 100,

src/clib/u8x8_d_sed1330.c

@@ -126,7 +126,7 @@ static const u8x8_display_info_t u8x8_sed1330_240x128_display_info =
   /* sda_setup_time_ns = */ 20,		
   /* sck_pulse_width_ns = */  140,	
   /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		
+  /* spi_mode = */ 0,		
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 120,		/* G242CX Datasheet p5 */
   /* write_pulse_width_ns = */ 220,		/* G242CX Datasheet p5 */

src/clib/u8x8_d_ssd1306_128x32.c

@@ -189,7 +189,7 @@ static const u8x8_display_info_t u8x8_ssd1306_128x32_univision_display_info =
   /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
   /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
   /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		/* active high, rising edge */
+  /* spi_mode = */ 0,		/* active high, rising edge */
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 40,
   /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */

src/clib/u8x8_d_ssd1306_128x64_noname.c

@@ -193,7 +193,7 @@ static const u8x8_display_info_t u8x8_ssd1306_128x64_noname_display_info =
   /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
   /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
   /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		/* active high, rising edge */
+  /* spi_mode = */ 0,		/* active high, rising edge */
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 40,
   /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */
@@ -228,7 +228,7 @@ static const u8x8_display_info_t u8x8_sh1106_128x64_noname_display_info =
   /* sda_setup_time_ns = */ 50,		/* SSD1306: 15ns, but cycle time is 100ns, so use 100/2 */
   /* sck_pulse_width_ns = */ 50,	/* SSD1306: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
   /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		/* active high, rising edge */
+  /* spi_mode = */ 3,		/* active low (clock is high by default), rising edge, this seems to be a difference to the ssd1306 */
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 40,
   /* write_pulse_width_ns = */ 150,	/* SSD1306: cycle time is 300ns, so use 300/2 = 150 */

src/clib/u8x8_d_ssd1322.c

@@ -199,7 +199,7 @@ static const u8x8_display_info_t u8x8_ssd1322_256x64_display_info =
   /* sda_setup_time_ns = */ 50,		/* SSD1322: 15ns, but cycle time is 100ns, so use 100/2 */
   /* sck_pulse_width_ns = */ 50,	/* SSD1322: 20ns, but cycle time is 100ns, so use 100/2, AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
   /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		/* active high, rising edge */
+  /* spi_mode = */ 0,		/* active high, rising edge */
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 10,
   /* write_pulse_width_ns = */ 150,	/* SSD1322: cycle time is 300ns, so use 300/2 = 150 */

src/clib/u8x8_d_st7565.c

@@ -82,7 +82,7 @@ static const u8x8_display_info_t u8x8_st7565_128x64_display_info =
   /* sda_setup_time_ns = */ 50,		/* st7565 datasheet, table 26, tsds */
   /* sck_pulse_width_ns = */ 120,	/* half of cycle time (100ns according to datasheet), AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
   /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		/* active high, rising edge */
+  /* spi_mode = */ 0,		/* active high, rising edge */
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 40,	/* st7565 datasheet, table 24, tds8 */
   /* write_pulse_width_ns = */ 80,	/* st7565 datasheet, table 24, tcclw */
@@ -106,7 +106,7 @@ static const u8x8_display_info_t u8x8_st7565_128x32_display_info =
   /* sda_setup_time_ns = */ 50,		/* st7565 datasheet, table 26, tsds */
   /* sck_pulse_width_ns = */ 120,	/* half of cycle time (100ns according to datasheet), AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
   /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		/* active high, rising edge */
+  /* spi_mode = */ 0,		/* active high, rising edge */
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 40,	/* st7565 datasheet, table 24, tds8 */
   /* write_pulse_width_ns = */ 80,	/* st7565 datasheet, table 24, tcclw */

src/clib/u8x8_d_st7920.c

@@ -45,14 +45,14 @@ static const uint8_t u8x8_d_st7920_init_seq[] = {
     
   U8X8_DLY(100),
   U8X8_START_TRANSFER(),             	/* enable chip, delay is part of the transfer start */
-  U8X8_DLY(100),
+  U8X8_DLY(10),
   
   U8X8_C(0x038),            			/* 8 Bit interface (DL=1), basic instruction set (RE=0) */
-  U8X8_C(0x00c),		                /* display on, cursor & blink off; 0x08: all off */
+  U8X8_C(0x008),		                /* display on, cursor & blink off; 0x08: all off */
   U8X8_C(0x006),		                /* Entry mode: Cursor move to right ,DDRAM address counter (AC) plus 1, no shift  */  
   U8X8_C(0x002),		                /* disable scroll, enable CGRAM adress  */
-  //U8X8_C(0x001),		                /* clear RAM, needs 1.6 ms */
-  U8X8_DLY(2),					/* delay 2ms */
+  U8X8_C(0x001),		                /* clear RAM, needs 1.6 ms */
+  U8X8_DLY(4),					/* delay 2ms */
 
   
   U8X8_END_TRANSFER(),             	/* disable chip */
@@ -133,10 +133,10 @@ uint8_t u8x8_d_st7920_common(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *a
 	u8x8_cad_SendCmd(u8x8, 0x080 | x );      /* set x pos */
 	c = ((u8x8_tile_t *)arg_ptr)->cnt;	/* number of tiles */
 
-	u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, 200, NULL);	/* extra dely required */
+	//u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, 200, NULL);	/* extra dely required */
 	u8x8_cad_SendData(u8x8, c, ptr);	/* note: SendData can not handle more than 255 bytes, send one line of data */
 	ptr += c;
-	u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, 200, NULL);	/* extra dely required */
+	//u8x8->gpio_and_delay_cb(u8x8, U8X8_MSG_DELAY_NANO, 200, NULL);	/* extra dely required */
       }
 
       u8x8_cad_EndTransfer(u8x8);
@@ -161,6 +161,7 @@ static const u8x8_display_info_t u8x8_st7920_192x32_display_info =
   /* sck_pulse_width_ns = */  140,	/* datasheet ST7920 */
   /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
   /* spi_mode = */ 3,		/* old: sck_takeover_edge, new: active high (bit 1), rising edge (bit 0), 18 Aug 16: changed from 1 to 3 which works for 101 */
+	/* Arduino mode 3: aktive low clock, but use rising edge */
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 30,
   /* write_pulse_width_ns = */ 40,
@@ -186,6 +187,7 @@ static const u8x8_display_info_t u8x8_st7920_128x64_display_info =
   /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
   /* ST7920+Due work with 1MHz but not with 2MHz, ST7920+Uno works with 2MHz */
   /* spi_mode = */ 3,		/* active high, rising edge, 18 Aug 16: changed from 1 to 3 which works for 101  */
+  /* in theory mode 3 should be correct  */
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 30,
   /* write_pulse_width_ns = */ 40,

src/clib/u8x8_d_t6963.c

@@ -135,7 +135,7 @@ static const u8x8_display_info_t u8x8_t6963_240x128_display_info =
   /* sda_setup_time_ns = */ 20,		
   /* sck_pulse_width_ns = */  140,	
   /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		
+  /* spi_mode = */ 0,		
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 80,
   /* write_pulse_width_ns = */ 80,
@@ -222,7 +222,7 @@ static const u8x8_display_info_t u8x8_t6963_256x64_display_info =
   /* sda_setup_time_ns = */ 20,		
   /* sck_pulse_width_ns = */  140,	
   /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		
+  /* spi_mode = */ 0,		
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 80,
   /* write_pulse_width_ns = */ 80,
@@ -305,7 +305,7 @@ static const u8x8_display_info_t u8x8_t6963_128x64_display_info =
   /* sda_setup_time_ns = */ 20,		
   /* sck_pulse_width_ns = */  140,	
   /* sck_clock_hz = */ 1000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		
+  /* spi_mode = */ 0,		
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 80,
   /* write_pulse_width_ns = */ 80,

src/clib/u8x8_d_uc1701_dogs102.c

@@ -108,7 +108,7 @@ static const u8x8_display_info_t u8x8_uc1701_display_info =
   /* sda_setup_time_ns = */ 12,		
   /* sck_pulse_width_ns = */ 75,	/* half of cycle time (100ns according to datasheet), AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
   /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		/* active high, rising edge */
+  /* spi_mode = */ 0,		/* active high, rising edge */
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 30,
   /* write_pulse_width_ns = */ 40,

src/clib/u8x8_d_uc1701_mini12864.c

@@ -109,7 +109,7 @@ static const u8x8_display_info_t u8x8_uc1701_display_info =
   /* sda_setup_time_ns = */ 12,		
   /* sck_pulse_width_ns = */ 75,	/* half of cycle time (100ns according to datasheet), AVR: below 70: 8 MHz, >= 70 --> 4MHz clock */
   /* sck_clock_hz = */ 4000000UL,	/* since Arduino 1.6.0, the SPI bus speed in Hz. Should be  1000000000/sck_pulse_width_ns */
-  /* spi_mode = */ 1,		/* active high, rising edge */
+  /* spi_mode = */ 0,		/* active high, rising edge */
   /* i2c_bus_clock_100kHz = */ 4,
   /* data_setup_time_ns = */ 30,
   /* write_pulse_width_ns = */ 40,