Micropython porting of video primitives for Portenta H7 via USBC (to HDMI adapter)

Warning

Working in progress, help are welcome!

How to build

Important

Currently needs patches to the files

ports/stm32/boards/ARDUINO_PORTENTA_H7/mpconfigboard.h

diff --git a/ports/stm32/boards/ARDUINO_PORTENTA_H7/mpconfigboard.h b/ports/stm32/boards/ARDUINO_PORTENTA_H7/mpconfigboard.h
index ace63e016..e8216c994 100644
--- a/ports/stm32/boards/ARDUINO_PORTENTA_H7/mpconfigboard.h
+++ b/ports/stm32/boards/ARDUINO_PORTENTA_H7/mpconfigboard.h
@@ -240,6 +240,8 @@ extern struct _spi_bdev_t spi_bdev;
 #define MICROPY_HW_SDRAM_SIZE               (64 / 8 * 1024 * 1024)  // 64 Mbit
 #define MICROPY_HW_SDRAM_STARTUP_TEST       (1)
 #define MICROPY_HW_SDRAM_TEST_FAIL_ON_ERROR (true)
+#define MICROPY_HEAP_START                  ((sdram_valid) ? sdram_start() : &_heap_start)
+#define MICROPY_HEAP_END                    ((sdram_valid) ? sdram_end() : &_heap_end)
 
 // Timing configuration for 200MHz/2=100MHz (10ns)
 #define MICROPY_HW_SDRAM_CLOCK_PERIOD       2

ports/stm32/boards/ARDUINO_PORTENTA_H7/stm32h7xx_hal_conf.h

diff --git a/ports/stm32/boards/ARDUINO_PORTENTA_H7/stm32h7xx_hal_conf.h b/ports/stm32/boards/ARDUINO_PORTENTA_H7/stm32h7xx_hal_conf.h
index 737a2e5b0..339130ac6 100644
--- a/ports/stm32/boards/ARDUINO_PORTENTA_H7/stm32h7xx_hal_conf.h
+++ b/ports/stm32/boards/ARDUINO_PORTENTA_H7/stm32h7xx_hal_conf.h
@@ -23,6 +23,8 @@
 #define PREFETCH_ENABLE             1
 #define USE_RTOS                    0
 
+#define HAL_DMA2D_MODULE_ENABLED
+#define HAL_DSI_MODULE_ENABLED
 #define HAL_HSEM_MODULE_ENABLED
 #define HAL_JPEG_MODULE_ENABLED
 #define HAL_LPTIM_MODULE_ENABLED
@@ -40,6 +42,14 @@
 #define HAL_SRAM_MODULE_ENABLED
 #define HAL_SWPMI_MODULE_ENABLED
 
+#ifdef HAL_DMA2D_MODULE_ENABLED
+#include "stm32h7xx_hal_dma2d.h"
+#endif
+
+#ifdef HAL_DSI_MODULE_ENABLED
+#include "stm32h7xx_hal_dsi.h"
+#endif
+
 #ifdef HAL_HSEM_MODULE_ENABLED
 #include "stm32h7xx_hal_hsem.h"
 #endif
@@ -48,4 +58,8 @@
 #include "stm32h7xx_hal_mmc.h"
 #endif
 
+#ifdef HAL_LTDC_MODULE_ENABLED
+#include "stm32h7xx_hal_ltdc.h"
+#endif
+
 #endif // MICROPY_INCLUDED_STM32H7XX_HAL_CONF_H

Build

$ git clone https://github.com/micropython/micropython.git
$ cd micropython
micropython$ git submodule update --init --depth 1
micropython$ git clone https://github.com/dmazzella/anx7625.git usercmodule/anx7625
micropython$ git apply usercmodule/anx7625/patches/mpconfigboard.h.patch
micropython$ git apply usercmodule/anx7625/patches/stm32h7xx_hal_conf.h.patch
micropython$ make -j2 -C mpy-cross/
micropython$ make -C ports/stm32 BOARD=ARDUINO_PORTENTA_H7 USER_C_MODULES="$(pwd)/usercmodule"

Example

import _anx7625

import framebuf
import machine
import time


def main():
    i2c = machine.I2C(1, freq=400_000)
    video_on = machine.Pin.cpu.K2
    video_rst = machine.Pin.cpu.J3
    otg_on = machine.Pin.cpu.J6
    mode = _anx7625.MODE_720x480_60Hz
    width = 720
    height = 480
    buffer = bytearray(width * height * 2)

    anx = _anx7625.ANX7625(
        i2c, video_on, video_rst, otg_on, mode, buffer, width=width, height=height
    )

    fbuf = framebuf.FrameBuffer(anx.buffer, anx.width, anx.height, framebuf.RGB565)
    fbuf.fill(0x3433)

    fbuf.text("ANX7625 Micropython porting", 80, 20, 0xFFFF)

    for i in range(5):
        fbuf.rect(80 + i * 30, 40 + i * 20, 60, 60, 0xECAE, True)

    fbuf.fill_rect(1, 1, 15, 15, 0xFFFF)
    fbuf.vline(4, 4, 12, 0)
    fbuf.vline(8, 1, 12, 0)
    fbuf.vline(12, 4, 12, 0)
    fbuf.vline(14, 13, 2, 0)

    while True:
        for i in range(5):
            fbuf.rect(80 + i * 30, 140 + i * 20, 60, 60, 0x177A, True)

        fbuf.vline(4, 4, 12, 0)
        fbuf.vline(8, 1, 12, 0)
        fbuf.vline(12, 4, 12, 0)
        fbuf.vline(14, 13, 2, 0)


if __name__ == "__main__":
    main()