Search found 4 matches

by wangshujun@tom.com
Fri May 29, 2020 9:50 am
Forum: General Discussion and Questions
Topic: PyBoard Timer Question
Replies: 9
Views: 1757

Re: PyBoard Timer Question

Can the DMA double buffer non-blocking mode be achieved? Unfortunately, it is not possible to reliably collect real-world continuous data
by wangshujun@tom.com
Thu Jan 09, 2020 3:17 am
Forum: ESP32 boards
Topic: Trying to disable REPL from Uart0 on ESP32
Replies: 4
Views: 1158

Re: Trying to disable REPL from Uart0 on ESP32

I have also encountered similar problems, which can be solved in the following ways through exploration. 1. Directly define other UART ports to overwrite repl on gpio1 and gpio3, but it will cause complete failure of repl, including ctrl-c. if the automatic operation of main.py is set, the board can...
by wangshujun@tom.com
Fri Feb 15, 2019 9:38 am
Forum: ESP32 boards
Topic: uPyCraft looses connection to ESP32
Replies: 13
Views: 3450

Re: uPyCraft looses connection to ESP32

Yesterday I had the same problem. The solution was to rename boot.py in other software.

The reason for the problem is that the time from the start of the connection to reset the target board to the appearance of Python prompts exceeds the maximum waiting time of the software.
by wangshujun@tom.com
Fri Feb 15, 2019 9:34 am
Forum: ESP32 boards
Topic: ws2811/2812 Programs very slow
Replies: 23
Views: 3295

Re: ws2811/2812 Programs very slow

There is a fill method in the module of neopixel, which can fill all the pixels quickly, so that your second cycle can be cancelled, and the speed should be improved a lot. In addition, the data in NP [i] can be read out, so that only the elements that need to be changed can be changed, and it is no...