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ST7789 Driver for esp-idf

License: MIT License

CMake 0.61% Makefile 0.21% C 99.19%

st7789 esp32 esp-idf ttgo bmp jpeg jpeg-decoder png png-decoder

esp-idf-st7789's Issues

This Project can not work on esp32C3

MOSI ： GPIO10
SCLK ：GPIO7
CS：-1
DC：GPIO1
RESET：GPIO3
BL： GPIO0

Can anyone help me check it，Thanks！

No demo appears on screen

Hi,
I have been trying to run this demo on an 1.3" display with ST7889 driver connected to a ESP32C3 board. I believe that the pin connections are fine because I managed to get some small example running on Rust with the same wiring. I get this output in the monitor (debug level activated). I don't see any error, but something is still not right.

Executing action: monitor
Serial port /dev/ttyUSB0
Connecting....ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0x1 (POWERON),boot:0xc (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd6100,len:0x16c8
load:0x403ce000,len:0x930
load:0x403d0000,len:0x2d40
entry 0x403ce000
I (30) boot: ESP-IDF v4.4-84-g257d95fc22-dirty 2nd stage bootloader
I (30) boot: compile time 22:34:31
I (30) boot: chip revision: 3
I (33) boot.esp32c3: SPI Speed      : 80MHz
I (38) boot.esp32c3: SPI Mode       : DIO
I (43) boot.esp32c3: SPI Flash Size : 2MB
I (48) boot: Enabling RNG early entropy source...
I (53) boot: Partition Table:
I (57) boot: ## Label            Usage          Type ST Offset   Length
I (64) boot:  0 nvs              WiFi data        01 02 00009000 00006000
I (71) boot:  1 phy_init         RF data          01 01 0000f000 00001000
I (79) boot:  2 factory          factory app      00 00 00010000 00100000
I (86) boot:  3 storage          Unknown data     01 82 00110000 000f0000
I (94) boot: End of partition table
I (98) esp_image: segment 0: paddr=00010020 vaddr=3c030020 size=0a5d8h ( 42456) map
I (113) esp_image: segment 1: paddr=0001a600 vaddr=3fc8be00 size=0157ch (  5500) load
I (116) esp_image: segment 2: paddr=0001bb84 vaddr=40380000 size=04494h ( 17556) load
I (127) esp_image: segment 3: paddr=00020020 vaddr=42000020 size=284e4h (165092) map
I (158) esp_image: segment 4: paddr=0004850c vaddr=40384494 size=07804h ( 30724) load
I (164) esp_image: segment 5: paddr=0004fd18 vaddr=50000010 size=00010h (    16) load
I (167) boot: Loaded app from partition at offset 0x10000
I (169) boot: Disabling RNG early entropy source...
I (186) cpu_start: Pro cpu up.
D (186) efuse: In EFUSE_BLK2__DATA4_REG is used 3 bits starting with 0 bit
D (187) efuse: In EFUSE_BLK2__DATA4_REG is used 8 bits starting with 12 bit
D (193) efuse: In EFUSE_BLK1__DATA3_REG is used 3 bits starting with 18 bit
D (200) efuse: In EFUSE_BLK1__DATA5_REG is used 5 bits starting with 5 bit
D (207) efuse: In EFUSE_BLK1__DATA4_REG is used 7 bits starting with 7 bit
D (214) efuse: In EFUSE_BLK1__DATA4_REG is used 7 bits starting with 14 bit
D (221) efuse: In EFUSE_BLK1__DATA4_REG is used 8 bits starting with 21 bit
D (228) efuse: In EFUSE_BLK1__DATA4_REG is used 3 bits starting with 29 bit
D (235) efuse: In EFUSE_BLK1__DATA5_REG is used 5 bits starting with 0 bit
D (249) clk: RTC_SLOW_CLK calibration value: 3775962
I (258) cpu_start: Pro cpu start user code
I (258) cpu_start: cpu freq: 160000000
I (258) cpu_start: Application information:
I (261) cpu_start: Project name:     st7789
I (266) cpu_start: App version:      bd9dcac-dirty
I (271) cpu_start: Compile time:     Jan 28 2022 22:34:30
I (277) cpu_start: ELF file SHA256:  dc6250632bdfbf57...
I (283) cpu_start: ESP-IDF:          v4.4-84-g257d95fc22-dirty
D (290) memory_layout: Checking 4 reserved memory ranges:
D (295) memory_layout: Reserved memory range 0x3fc80000 - 0x3fc8be00
D (302) memory_layout: Reserved memory range 0x3fc8be00 - 0x3fc8ea10
D (308) memory_layout: Reserved memory range 0x3fcdf060 - 0x3fce0000
D (315) memory_layout: Reserved memory range 0x50000000 - 0x50000020
D (321) memory_layout: Building list of available memory regions:
D (327) memory_layout: Available memory region 0x3fc8ea10 - 0x3fca0000
D (334) memory_layout: Available memory region 0x3fca0000 - 0x3fcc0000
D (340) memory_layout: Available memory region 0x3fcc0000 - 0x3fcdf060
D (347) memory_layout: Available memory region 0x50000020 - 0x50002000
I (354) heap_init: Initializing. RAM available for dynamic allocation:
D (361) heap_init: New heap initialised at 0x3fc8ea10
I (366) heap_init: At 3FC8EA10 len 000315F0 (197 KiB): DRAM
I (372) heap_init: At 3FCC0000 len 0001F060 (124 KiB): STACK/DRAM
D (379) heap_init: New heap initialised at 0x50000020
I (384) heap_init: At 50000020 len 00001FE0 (7 KiB): RTCRAM
D (391) FLASH_HAL: extra_dummy: 0
D (394) spi_flash: trying chip: issi
D (398) spi_flash: trying chip: gd
D (401) spi_flash: trying chip: mxic
D (405) spi_flash: trying chip: winbond
D (409) spi_flash: trying chip: boya
D (412) spi_flash: trying chip: generic
I (416) spi_flash: detected chip: generic
I (421) spi_flash: flash io: dio
D (425) cpu_start: calling init function: 0x4200002a
D (430) intr_alloc: Connected src 39 to int 2 (cpu 0)
I (435) sleep: Configure to isolate all GPIO pins in sleep state
I (442) sleep: Enable automatic switching of GPIO sleep configuration
D (449) intr_alloc: Connected src 50 to int 3 (cpu 0)
I (454) cpu_start: Starting scheduler.
D (458) intr_alloc: Connected src 37 to int 4 (cpu 0)
D (458) heap_init: New heap initialised at 0x3fcc0000
D (458) intr_alloc: Connected src 33 to int 7 (cpu 0)
I (468) ST7789: Initializing SPIFFS
D (468) partition: Loading the partition table
D (468) partition: Partition table MD5 verified
I (498) ST7789: Partition size: total: 896321, used: 313499
I (498) SPIFFS_Directory: d_name=esp_logo.png d_ino=0 d_type=1
I (498) SPIFFS_Directory: d_name=LATIN32B.FNT d_ino=0 d_type=1
I (508) SPIFFS_Directory: d_name=ILMH32XB.FNT d_ino=0 d_type=1
I (518) SPIFFS_Directory: d_name=image.bmp d_ino=0 d_type=1
I (528) SPIFFS_Directory: d_name=ILMH16XB.FNT d_ino=0 d_type=1
I (528) SPIFFS_Directory: d_name=esp32.jpeg d_ino=0 d_type=1
I (538) SPIFFS_Directory: d_name=ILGH16XB.FNT d_ino=0 d_type=1
I (538) SPIFFS_Directory: d_name=ILMH24XB.FNT d_ino=0 d_type=1
I (548) SPIFFS_Directory: d_name=ILGH32XB.FNT d_ino=0 d_type=1
I (558) SPIFFS_Directory: d_name=ILGH24XB.FNT d_ino=0 d_type=1
I (568) ST7789: GPIO_CS=-1
I (568) ST7789: GPIO_DC=8
I (568) gpio: GPIO[8]| InputEn: 0| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
I (578) ST7789: GPIO_RESET=9
I (578) gpio: GPIO[9]| InputEn: 0| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
D (588) ST7789: ms=50 _ms=59 portTICK_PERIOD_MS=10 xTicksToDelay=5
D (648) ST7789: ms=100 _ms=109 portTICK_PERIOD_MS=10 xTicksToDelay=10
D (748) ST7789: ms=50 _ms=59 portTICK_PERIOD_MS=10 xTicksToDelay=5
I (798) ST7789: GPIO_BL=18
I (798) gpio: GPIO[18]| InputEn: 0| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
I (798) ST7789: GPIO_MOSI=7
I (798) ST7789: GPIO_SCLK=6
D (798) gdma: new group (0) at 0x3fc909b4
D (808) gdma: new pair (0,0) at 0x3fc909e0
D (808) gdma: new tx channel (0,0) at 0x3fc9234c
D (818) gdma: new rx channel (0,0) at 0x3fc90a00
D (818) spi: SPI2 use iomux pins.
D (818) ST7789: spi_bus_initialize=0
D (828) intr_alloc: Connected src 19 to int 9 (cpu 0)
D (828) spi_hal: eff: 20000, limit: 80000k(/0), 0 dummy, -1 delay
D (838) spi_master: SPI2: New device added to CS5, effective clock: 20000kHz
D (848) ST7789: spi_bus_add_device=0
D (848) ST7789: ms=150 _ms=159 portTICK_PERIOD_MS=10 xTicksToDelay=15
D (1008) ST7789: ms=255 _ms=264 portTICK_PERIOD_MS=10 xTicksToDelay=26
D (1268) ST7789: ms=10 _ms=19 portTICK_PERIOD_MS=10 xTicksToDelay=1
D (1278) ST7789: ms=10 _ms=19 portTICK_PERIOD_MS=10 xTicksToDelay=1
D (1288) ST7789: ms=10 _ms=19 portTICK_PERIOD_MS=10 xTicksToDelay=1
D (1298) ST7789: ms=255 _ms=264 portTICK_PERIOD_MS=10 xTicksToDelay=26
D (1558) ST7789: offset(x)=0 offset(y)=0
D (2108) ST7789: offset(x)=0 offset(y)=0
D (2658) ST7789: offset(x)=0 offset(y)=0
I (3208) FillTest: elapsed time[ms]:1650
D (7208) ST7789: offset(x)=0 offset(y)=0
D (7228) ST7789: offset(x)=0 offset(y)=0
D (7248) ST7789: offset(x)=0 offset(y)=0
I (7258) ColorBarTest: elapsed time[ms]:50
D (11268) ST7789: offset(x)=0 offset(y)=0
I (11548) ArrowTest: elapsed time[ms]:280
D (15548) ST7789: offset(x)=0 offset(y)=0

I have followed the instructions on the page, and I am also using ESP-IDF 4.4 for this (I checked out today the release/v4.4 branch)

$ idf.py --version
ESP-IDF v4.4-84-g257d95fc22-dirty

Any ideas? Thanks for your help!

IMAGE

Preventing black screen while refreshing text

Hi,
i measure values every second an print them onto the screen. To clear old values i first fill the screen black and then draw the text. That results in a visible "refresh" effect, everything is black and the text slowly appears again line per line.
Is it possible to draw everything in a frame buffer and then paint the screen at once? So that there isn't a completly black screen for one frame. Thanks and cool library!

IMAGE

Fontx: not found.

Like this:

How should I put the font file into SPIFFS Filesystem?

demo worked, but only 240x240?

my lcd is 320x240, i have config in menuconfig, set width to 320, height to 240

but the demo only show 240x240?

decode_image.c not included in cmake

/root/.espressif/tools/xtensa-esp32-elf/esp-2020r1-8.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.2.0/../../../../xtensa-esp32-elf/bin/ld: esp-idf/main/libmain.a(main.c.obj):(.literal.JPEGTest+0x8): undefined reference to `decode_image'

You probably forget it:
set(COMPONENT_SRCS main.c st7789.c fontx.c decode_image.c)

Variable 'size' overflows in function lcdDrawFinish() when setting the resolution to 320*240

My 320240 TFT can only displays a limited part when enabling frame buffer, then I found that variable 'size' overflowed, where it should be set to uint32_t. It doesn't work under resolution at 320240,

esp-idf-st7789/components/st7789/st7789.c

Line 1069 in 8adf642

uint16_t size = dev->_width*dev->_height;

Not working in ESP-IDF5.0

I just clone this repo, set pins in menuconfig and no see demo
Display backlight changes correctly, but not displaying demo.
Also: in esp-idf5.0 i had to fix types in ESP_LOG calls.

UART log

I (30) boot: ESP-IDF v5.0-beta1-473-geea8629fa1-dirt 2nd stage bootloader
I (30) boot: compile time 21:22:17
I (31) boot: chip revision: V100
I (35) boot_comm: chip revision: 1, min. bootloader chip revision: 0
I (42) boot.esp32: SPI Speed      : 40MHz
I (47) boot.esp32: SPI Mode       : DIO
I (52) boot.esp32: SPI Flash Size : 2MB
I (56) boot: Enabling RNG early entropy source...
I (62) boot: Partition Table:
I (65) boot: ## Label            Usage          Type ST Offset   Length
I (72) boot:  0 nvs              WiFi data        01 02 00009000 00006000
I (80) boot:  1 phy_init         RF data          01 01 0000f000 00001000
I (87) boot:  2 factory          factory app      00 00 00010000 00100000
I (95) boot:  3 storage          Unknown data     01 82 00110000 000f0000
I (102) boot: End of partition table
I (107) boot_comm: chip revision: 1, min. application chip revision: 0
I (114) esp_image: segment 0: paddr=00010020 vaddr=3f400020 size=0b7d4h ( 47060) map
I (139) esp_image: segment 1: paddr=0001b7fc vaddr=3ffb0000 size=02a10h ( 10768) load
I (144) esp_image: segment 2: paddr=0001e214 vaddr=40080000 size=01e04h (  7684) load
I (148) esp_image: segment 3: paddr=00020020 vaddr=400d0020 size=260f0h (155888) map
I (210) esp_image: segment 4: paddr=00046118 vaddr=40081e04 size=0b68ch ( 46732) load
I (229) esp_image: segment 5: paddr=000517ac vaddr=50000000 size=00010h (    16) load
I (237) boot: Loaded app from partition at offset 0x10000
I (237) boot: Disabling RNG early entropy source...
I (249) cpu_start: Pro cpu up.
I (250) cpu_start: Starting app cpu, entry point is 0x40081148
I (0) cpu_start: App cpu up.
I (264) cpu_start: Pro cpu start user code
I (264) cpu_start: cpu freq: 240000000 Hz
I (264) cpu_start: Application information:
I (269) cpu_start: Project name:     st7789
I (274) cpu_start: App version:      1
I (278) cpu_start: Compile time:     Nov  4 2022 22:59:37
I (284) cpu_start: ELF file SHA256:  dd5bdf4f472a3adf...
I (290) cpu_start: ESP-IDF:          v5.0-beta1-473-geea8629fa1-dirt
I (297) heap_init: Initializing. RAM available for dynamic allocation:
I (304) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM
I (310) heap_init: At 3FFB3B38 len 0002C4C8 (177 KiB): DRAM
I (317) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM
I (323) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (329) heap_init: At 4008D490 len 00012B70 (74 KiB): IRAM
I (337) spi_flash: detected chip: generic
I (340) spi_flash: flash io: dio
W (344) spi_flash: Detected size(4096k) larger than the size in the binary image header(2048k). Using the size in the binary image header.
I (358) cpu_start: Starting scheduler on PRO CPU.
I (0) cpu_start: Starting scheduler on APP CPU.
I (368) ST7789: Initializing SPIFFS
I (458) ST7789: Partition size: total: 896321, used: 321782
I (458) SPIFFS_Directory: d_name=esp32.jpeg d_ino=0 d_type=1
I (458) SPIFFS_Directory: d_name=esp_logo.png d_ino=0 d_type=1
I (468) SPIFFS_Directory: d_name=ILGH16XB.FNT d_ino=0 d_type=1
I (468) SPIFFS_Directory: d_name=ILGH24XB.FNT d_ino=0 d_type=1
I (478) SPIFFS_Directory: d_name=ILGH32XB.FNT d_ino=0 d_type=1
I (478) SPIFFS_Directory: d_name=ILMH16XB.FNT d_ino=0 d_type=1
I (488) SPIFFS_Directory: d_name=ILMH24XB.FNT d_ino=0 d_type=1
I (498) SPIFFS_Directory: d_name=ILMH32XB.FNT d_ino=0 d_type=1
I (498) SPIFFS_Directory: d_name=image.bmp d_ino=0 d_type=1
I (518) SPIFFS_Directory: d_name=LATIN32B.FNT d_ino=0 d_type=1
I (518) SPIFFS_Directory: d_name=qrcode.bmp d_ino=0 d_type=1
I (538) ST7789: GPIO_CS=-1
I (538) ST7789: GPIO_DC=27
I (548) gpio: GPIO[27]| InputEn: 0| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (548) ST7789: GPIO_RESET=33
I (548) gpio: GPIO[33]| InputEn: 0| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (738) ST7789: GPIO_BL=32
I (738) gpio: GPIO[32]| InputEn: 0| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (738) ST7789: GPIO_MOSI=23
I (738) ST7789: GPIO_SCLK=18
I (3138) FillTest: elapsed time[ms]:1650
I (7188) ColorBarTest: elapsed time[ms]:50
I (11458) ArrowTest: elapsed time[ms]:270
I (17588) LineTest: elapsed time[ms]:2130
I (23478) CircleTest: elapsed time[ms]:1890
I (29408) RoundRectTest: elapsed time[ms]:1930
I (39408) RectAngleTest: elapsed time[ms]:6000
I (50398) TriangleTest: elapsed time[ms]:6980
I (54828) DirectionTest: elapsed time[ms]:430
I (59878) HorizontalTest: elapsed time[ms]:1050
I (64928) VerticalTest: elapsed time[ms]:1050
I (69118) FillRectTest: elapsed time[ms]:190
I (73358) ColorTest: elapsed time[ms]:240
I (78378) CodeTest: elapsed time[ms]:1020
I (84018) CodeTest: elapsed time[ms]:1640
I (95288) BMPTest: elapsed time[ms]:7270
I (101858) JPEGTest: elapsed time[ms]:2570
I (108658) PNGTest: elapsed time[ms]:2800
I (112848) QRTest: elapsed time[ms]:190
I (123308) FillTest: elapsed time[ms]:1650
I (127358) ColorBarTest: elapsed time[ms]:50
I (131628) ArrowTest: elapsed time[ms]:270
I (137758) LineTest: elapsed time[ms]:2130
I (143648) CircleTest: elapsed time[ms]:1890
I (149578) RoundRectTest: elapsed time[ms]:1930
I (159578) RectAngleTest: elapsed time[ms]:6000
I (170568) TriangleTest: elapsed time[ms]:6980
I (174998) DirectionTest: elapsed time[ms]:430
I (180048) HorizontalTest: elapsed time[ms]:1050
I (185098) VerticalTest: elapsed time[ms]:1050
I (189318) FillRectTest: elapsed time[ms]:220
I (193558) ColorTest: elapsed time[ms]:240
I (198578) CodeTest: elapsed time[ms]:1020
I (204208) CodeTest: elapsed time[ms]:1630
I (215448) BMPTest: elapsed time[ms]:7240

Just use u lib

https://www.youtube.com/watch?v=aOyaK0pUiPk&t

I make the video demo u library on my custom board

Check it out!

Thanks!

did you original this st7789 library?

I'm curious if you created this st7789 library or if it's derived from something else. I'm asking because I'm planning to use it in a small project of my own, and I want to give proper credit in my documentation. (In any case, thanks for your work here.)

IMAGE

TFT backlight not powered on for Lilygo TTGO T-Watch-2020

I am trying to use your library with a Lilygo TTGO T-Watch-2020
https://www.tindie.com/products/ttgo/lilygor-ttgo-t-watch-2020/
I am using the correct pins and I tried several SPI frequencies but the display is not powered on, even if I set the backlight pin.

The lvgl esp32 port here:
https://github.com/lvgl/lv_port_esp32/blob/master/components/lvgl_esp32_drivers/lvgl_tft/st7789.c
does work correctly, so I assume something is wrong with the device initialization.
How could I find out what is going wrong?

Slow Refresh Rate of ST7789 Screen Compared to ESP-IDF Screen Library

I've been using the ESP-IDF-ST7789 library for my project, and while I love the rendering capabilities of the GFX, I have noticed that the refresh rate of the ST7789 screen is significantly slower compared to the screen library of the ESP-IDF.

I believe that this issue could potentially hinder the performance of certain projects that rely heavily on fast refresh rates. It would be great if there could be some improvements made to the library to enhance the refresh rate of the ST7789 screen and bring it closer to the performance of the ESP-IDF screen library.

Thank you for your hard work on this library, and I look forward to seeing how this issue can be addressed.

SVG logging

I implemented SVG output via ESP logging and sent you a pull request (#30). This is really handy for making screen captures, which is otherwise tricky on the device. Attached are the SVG renderings of the test cases from main.c. Since the SVG output doesn't really understand the animations in some of the test cases, what you see in the SVG is usually the final result even though all of the graphical steps are in the SVG file.

samples.zip

IMAGE

Video playing

Hi, is it possible to play video on LILYGO TTGO T8 ESP32-S2?

Can not auto reset on my board

The screen cant reset after I flash the code. After I double the delay of reset pin it can auto reset now.

	if ( GPIO_RESET >= 0 ) {
		//gpio_pad_select_gpio( GPIO_RESET );
		gpio_reset_pin( GPIO_RESET );
		gpio_set_direction( GPIO_RESET, GPIO_MODE_OUTPUT );
		gpio_set_level( GPIO_RESET, 1 );
		delayMS(50);
		gpio_set_level( GPIO_RESET, 0 );
		// change from 50
		delayMS(100);
		gpio_set_level( GPIO_RESET, 1 );
		delayMS(50);
	}

How to display 1 bit depth BMP image?

Hello, I am using BMPTest function in esp_idf library st7789 but this function only supports displaying BMP image with 24 bit depth.
Here is the command line:
if((result->dib.depth == 24) && (result->dib.compress_type == 0)){
....................................................
}
How to print 1 bit depth BMP image? Please help me fix it, I'm looking forward to your help.
Thanks.

IMAGE

Improve performance with frame buffer and DMA

I enjoy using this library but the performance of drawing could be improved. In stead of drawing directly to the display, I suggest drawing to a memory frame buffer and then sending the frame buffer to the display using DMA. Here is an example of how this could work:

https://esp32.com/viewtopic.php?t=20108

IMAGE

fontx.c needs to be added to CMakeLists in order to compile

Hi. Thanks for your effort creating this library. I had to add fontx.c to compile without errors. The create partition line will load the STIFFs.

set(COMPONENT_SRCS "st7789.c" "main.c" fontx.c)
set(COMPONENT_ADD_INCLUDEDIRS ".")

register_component()
spiffs_create_partition_image(storage ../font FLASH_IN_PROJECT)

Blank Display

Hi, I'm trying to use the library but I can't make it work. I already did the configuration as you show in the pictures, the program compile and runs well but never shows anything on the display. I also test the display with and Arduino library and works perfect. Could you give some idea to make it work? Thanks.

Please add a LICENSE to this repository

Without a license, we are not allowed to actually use this library. Please consider allowing use under the MIT license.

IMAGE

PlatformIO IDE use

board_build.partitions = partitions_example.csv

spiffs_create_partition_image(storage ../font FLASH_IN_PROJECT)

pio run -t menuconfig

Run the program

06A38A105C93B0314E000E3CD7DE9EED.mp4

IMAGE

SPI data is sampled on rising edge of clock, wrong mode?

Connecting a waveshare screen to an esp32-s3 it did not work, after looking in datasheet of the screen:
(https://www.waveshare.com/w/upload/a/ae/ST7789_Datasheet.pdf)

and the timings:

it looks like that the data is sampled on the rising edge of the clock. This should indicate it is spi mode 0 or 3. In diagram clock idles low so 0?. Changing this also fixes the black screen and I get a working demo.

I am not sure if waveshare uses a slightly different version of the chip?

Thanks for the library.

(I got a déjà vu feeling, but could not find earlier issue. might have been somewhere else.).

nopnop2002 / esp-idf-st7789 Goto Github PK

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