Dobrica Pavlinušić's random unstructured stuff

CH341A mini flash programmer: Revision 8

{image: ch341a_miniprogrammer.jpg}

{image: ch341a_miniprogrammer.jpg}

^ info

* http://onetransistor.blogspot.hr/2017/08/ch341a-mini-programmer-schematic.html


^ jumper on pins

1-2 SPI flash programmer mode
2-3 TTL serial mode

https://github.com/setarcos/ch341prog

.pre
dpavlin@nuc:/nuc/ch341a$ git clone https://github.com/setarcos/ch341prog
Cloning into 'ch341prog'...
remote: Counting objects: 104, done.
remote: Total 104 (delta 0), reused 0 (delta 0), pack-reused 104
Receiving objects: 100% (104/104), 34.79 KiB | 0 bytes/s, done.
Resolving deltas: 100% (61/61), done.
Checking connectivity... done.
dpavlin@nuc:/nuc/ch341a$ cd ch341prog/
dpavlin@nuc:/nuc/ch341a/ch341prog$ make
gcc -std=gnu99 -Wall ch341a.c main.c -o ch341prog -lusb-1.0
dpavlin@nuc:/nuc/ch341a/ch341prog$ ./ch341prog

Usage:
-h, --help display this message
-i, --info read the chip ID info
-e, --erase erase the entire chip
-l, --length <bytes> manually set length
-w, --write <filename> write chip with data from filename
-r, --read <filename> read chip and save data to filename
-t, --turbo increase the i2c bus speed (-tt to use much faster speed)
-d, --double double the spi bus speed
.pre

^ I2C

https://sourceforge.net/projects/ch341eepromtool/

.pre
dpavlin@nuc:/nuc/ch341a/ch341eepromtool_0.5$ gcc -o ch341eeprom ch341eeprom.c ch341funcs.c -lusb-1.0
dpavlin@nuc:/nuc/ch341a/ch341eepromtool_0.5$
dpavlin@nuc:/nuc/ch341a/ch341eepromtool_0.5$ ./ch341eeprom
ch341eeprom - an i2c EEPROM programming tool for the WCH CH341a IC
Version 0.5 copyright (c) 2011 asbokid <ballymunboy@gmail.com>

This program comes with asbolutely no warranty; This is free software,
and you are welcome to redistribute it under certain conditions:
GNU GPL v3 License: http://www.gnu.org/licenses/gpl.html

Usage:
-h, --help display this text
-v, --verbose verbose output
-d, --debug debug output
-s, --size size of EEPROM {24c32|24c64}
-e, --erase erase EEPROM (fill with 0xff)
-w, --write <filename> write EEPROM with image from filename
-r, --read <filename> read EEPROM and save image to filename

Example: ch341eeprom -v -s 24c64 -w bootrom.bin
.pre

^ SPI

.pre
git clone https://github.com/urjaman/flashrom/
git checkout -b origin/ch341a origin/ch341a

dpavlin@nuc:/nuc/flashrom$ sudo apt-get install pciutils-dev


.pre