MicroPython Forum (Archive)

Today, when updating the micro Python repository, we found that Pico SDK repeatedly contains a huge tinyusb, which leads to a huge amount of downloads when updating recursively In addition, tinyusb is a large warehouse. Whether it can be put out of this repository or directly reference the necessary...

Confirm that all three steps are required:
1. Modify partition table
2. Modification sdkconfig.base Flash size in
3. make FLASH_ SIZE?=8MB

The attachment is the script I use now. It's a stupid method, but it seems to be effective

I use the method of modifying partitions files to recompile the firmware and get the firmware that is suitable for 16 megabytes. I actually store and test more than 8 mega bytes of files and confirm that they are normal After upgrading to 1.14 + cmake, if you modify the partition table separately, ...

BTREE module should be built-in. Do you need the support of 8 MB flash? If so, consider trying the firmware linked below, both 8 and 16 megabytes

These firmware only changed the frame buffer module，Added Chinese support and big font support

https://github.com/wangshujun-tj/mpy-Framebuf-boost

Can connect smoothly espefuse.py This shows that the operation of en and IO0 is not a problem. The focus is on the flash mode when burning and writing and the hardware connection of io12
If io12 has a pull-up on the hardware, you can use the espefuse.py Configured to a fixed voltage of 3.3V

Some flash can't support the QIO mode very well. Consider changing it to qout or dout mode when burning In addition, the initial voltage of gpio12 affects the power supply voltage of flash. The common module flash is 3.3V, so it is necessary to ensure the gpio12 pull-down at the initial stage of pow...

In fact, the main reason is that the resistance of the USB cable is too large, most of which will be solved by replacing a high-quality USB cable when under voltage error occurs. Of course, a capacitor of more than 200uf in parallel between GND and V5 can also solve many problems

My previous firmware compilation was based on 1.13, but I haven't made it clear about the 1.14 esp32 compilation I didn't describe the possible problems The font_asc.h file needs to be copied to the same directory as modframebuf. C. This file contains four English fonts 12 / 16 / 24 / 32 Or can you ...

It seems that your compilation is correct, but the flash model on the board is 4 megabytes. When writing firmware with larger configuration, this error prompt should appear

I encountered this error when modifying the 1.13 firmware

This function is also normal when tested on stm32f407 board

The font files are stored in sdcard

The display speed is much faster than that of esp32

Rgb565 mode can support 128 × 160

The 16 color mode can support 320 × 240