The weactstudio.ch552coreboard from weactstudio

CH552 Dev Board SPI

Hello folks. I'm writing this issue with hope that you could give me some help or guidance. I'm facing a strange behavior in CH552 dev board and the module W25Q32 (external flash memory) when I'm reading data. The communication is done via SPI and I'm using ch55xduino. Let me explain step-by-step what happens, and any help is appreciated:

I've ported a library to read SPI flash chips, merged here https://github.com/DeqingSun/ch55xduino/tree/ch55xduino/ch55xduino/ch55x/libraries/SPIFlash
I have the W25Q32 all erased
I write the same byte (e.g. 0xAA) in all of the 16 pages of the first sector (total of 4096 bytes. Each page contains 256 bytes)
When I read the sector, I have inconsistent data, some bytes are OK but other not (example below)
If I read using an Arduino, it works, the whole sector (4096) are fulfilled with the byte I have written (0xAA).

Notice there is a pattern in the readings, only the page 1,2,4,8 and 16 contains the byte I wrote.

//I'm reading the flash like this:
for (int j=0; j<16; j++) {    
  readBytes((j*256), _sbuffer, 255);
    
  for (uint8_t i=0; i<255; i++) {
    USBSerial_print(_sbuffer[i], HEX);
    USBSerial_print(".");    
  }  
}



OUTPUT:

Reading addr: 0 until 255
1) AA.AA.AA.AA.AA.AA.AA.AA.AA.AA. . (abbreviated for brevity reason) . .AA.AA.AA.AA.

Reading addr: 256 until 511
2) AA.AA.AA.AA.AA.AA.AA.AA.AA.AA. . . .AA.AA.AA.AA.

Reading addr: 512 until 767
3) FF.FF.FF.FF.FF.FF.FF.FF.FF.FF. . . .FF.FF.FF.FF.

Reading addr: 768 until 1023
4) AA.AA.AA.AA.AA.AA.AA.AA.AA.AA. . . .AA.AA.AA.AA.

Reading addr: 1024 until 1279
5) FF.FF.FF.FF.FF.FF.FF.FF.FF.FF. . . .FF.FF.FF.FF.

Reading addr: 1280 until 1535
6) FF.FF.FF.FF.FF.FF.FF.FF.FF.FF. . . .FF.FF.FF.FF.

Reading addr: 1536 until 1791
7) FF.FF.FF.FF.FF.FF.FF.FF.FF.FF. . . .FF.FF.FF.FF.

Reading addr: 1792 until 2047
8) AA.AA.AA.AA.AA.AA.AA.AA.AA.AA. . . .AA.AA.AA.AA.

Reading addr: 2048 until 2303
9) FF.FF.FF.FF.FF.FF.FF.FF.FF.FF. . . .FF.FF.FF.FF.

Reading addr: 2304 until 2559
10) FF.FF.FF.FF.FF.FF.FF.FF.FF.FF. . . .FF.FF.FF.FF.

Reading addr: 2560 until 2815
11) FF.FF.FF.FF.FF.FF.FF.FF.FF.FF. . . .FF.FF.FF.FF.

Reading addr: 2816 until 3071
12) FF.FF.FF.FF.FF.FF.FF.FF.FF.FF. . . .FF.FF.FF.FF.

Reading addr: 3072 until 3327
13) FF.FF.FF.FF.FF.FF.FF.FF.FF.FF. . . .FF.FF.FF.FF.

Reading addr: 3328 until 3583
14) FF.FF.FF.FF.FF.FF.FF.FF.FF.FF. . . .FF.FF.FF.FF.

Reading addr: 3584 until 3839
15) FF.FF.FF.FF.FF.FF.FF.FF.FF.FF. . . .FF.FF.FF.FF.

Reading addr: 3840 until 4095
16) AA.AA.AA.AA.AA.AA.AA.AA.AA.AA. . . .AA.AA.AA.AA.

Design Request

This is a nice board. It would be a whole lot easier to use if the button on P36 would latch on instead of being a momentary switch.

新版本的ch55xduino在windows上不需要换驱动

新编译的上传工具支持CH375驱动，可以直接使用windows自动安装的驱动，且与官方工具共存。

另外建议aliexpress店也卖些ch552芯片。立创商城从不补货，其他卖ch552的aliexpress店看起来也都不太可信，我也确实听说在aliexpress上买的片子是假的。

weactstudio / weactstudio.ch552coreboard Goto Github PK

weactstudio.ch552coreboard's People

Contributors

Stargazers

Watchers

Forkers

weactstudio.ch552coreboard's Issues

CH552 Dev Board SPI

Design Request

新版本的ch55xduino在windows上不需要换驱动

有linux下的上传工具吗？

Recommend Projects

React

Vue.js

Typescript

TensorFlow

Django

Laravel

D3

Recommend Topics

javascript

web

server

Machine learning

Visualization

Game

Recommend Org

Facebook

Microsoft

Google

Alibaba

D3

Tencent