STM32H7XX support

[KenjutsuGH]

Hello everyone,

I have the following board: MCUDev DevEBox STM32H7XX_M the H743VIT6 version.

Support for this specific board was added to v2.2.0 of the official STM32 Core for Arduino. Using an ILI9341 hooked up to the SPI2 port, with the Adafruit_ILI9341 library, everything works as expected.

I can not, however, get the TFT_eSPI library to work. My setup:

#define ILI9341_DRIVER
#define STM32
#define TFT_WIDTH  320
#define TFT_HEIGHT 240
#define TFT_BACKLIGHT_ON HIGH 
#define TFT_BL   PB0 
#define TFT_SPI_PORT 2 // SPI port 2 maximum clock rate is 27MHz
#define TFT_MOSI PB15
#define TFT_MISO PB14
#define TFT_SCLK PB13
#define TFT_DC   PB1
#define TFT_RST  PE7
#define TFT_CS   PB12
#define SPI_FREQUENCY  27000000
#define LOAD_GLCD   // Font 1. Original Adafruit 8 pixel font needs ~1820 bytes in FLASH
#define LOAD_FONT2  // Font 2. Small 16 pixel high font, needs ~3534 bytes in FLASH, 96 characters
#define LOAD_FONT4  // Font 4. Medium 26 pixel high font, needs ~5848 bytes in FLASH, 96 characters
#define LOAD_FONT6  // Font 6. Large 48 pixel font, needs ~2666 bytes in FLASH, only characters 1234567890:-.apm
#define LOAD_FONT7  // Font 7. 7 segment 48 pixel font, needs ~2438 bytes in FLASH, only characters 1234567890:.
#define LOAD_FONT8  // Font 8. Large 75 pixel font needs ~3256 bytes in FLASH, only characters 1234567890:-.
#define LOAD_GFXFF  // FreeFonts. Include access to the 48 Adafruit_GFX free fonts FF1 to FF48 and custom fonts
#define SMOOTH_FONT
#define SPI_READ_FREQUENCY  20000000
// The XPT2046 requires a lower SPI clock rate of 2.5MHz so we define that here:
#define SPI_TOUCH_FREQUENCY  2500000

With STM32 defined, I get the following result from running the TF_graphicstest_one_lib sketch, but with nothing displayed on the LCD:

TFT_eSPI library test!
Benchmark                Time (microseconds)
Screen fill              154
Text                     9117
Lines                    54461
Horiz/Vert Lines         1357
Rectangles (outline)     1031
Rectangles (filled)      679
Circles (filled)         18409
Circles (outline)        20520
Triangles (outline)      12390
Triangles (filled)       13802
Rounded rects (outline)  8047
Rounded rects (filled)   6717
Done!

With STM32 not defined, I get the following result from running the TF_graphicstest_one_lib sketch, but still with nothing displayed on the LCD:

TFT_eSPI library test!
Benchmark                Time (microseconds)
Screen fill              796987
Text                     36426
Lines                    233193
Horiz/Vert Lines         65923
Rectangles (outline)     41594
Rectangles (filled)      1634473
Circles (filled)         189505
Circles (outline)        83844
Triangles (outline)      56943
Triangles (filled)       543141
Rounded rects (outline)  59416
Rounded rects (filled)   1662561
Done!

Any ideas?

Thank you

[Bodmer]

I have only used the STM32F767ZI
I think you will need to use the generic driver for the H series as they have a different SPI API. To use the generic driver (Basic Arduino SPI drivers) then do NOT use #define STM32 in the setup file.