A libusb based programming tool for 24Cxx serial EEPROMs using the WinChipHead CH347 IC
Requirements
- gcc and make
- libusb
Compiling
After installing the necessary tools and libusb, building ch347eeprom is as simple as running the included Makefile:
make
Usage
Using ch347eeprom is straightforward:
Usage:
-h, --help display this text
-v, --verbose verbose output
-d, --debug debug output
-s, --size size of EEPROM {24c01|24c02|24c04|24c08|24c16|24c32|24c64|24c128|24c256|24c512|24c1024}
-p, --speed i2c speed (low|fast|high) if different than standard which is default
-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
For example:
$ ./ch347eeprom -v -s 24c64 -e
Searching USB buses for WCH ch347a i2c EEPROM programmer [1a86:55db]
Found [1a86:55db] as device [82] on USB bus [3]
Opened device [1a86:55db]
Claimed device interface [2]
Device reported its revision [64.01]
Configured USB device with vendor ID: 1a86 product ID: 55db
Set i2c bus speed to [100 kHz]
Erased [8192] bytes of [24c64] EEPROM
Closed USB device
Author
Originally written by asbokid and released under the terms of the GNU GPL, version 3, or later. Modifications by command-tab to make it work under OS X.
License
This is free software: you can redistribute it and/or modify it under the terms of the latest GNU General Public License as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
Tested
| Name | Write | Read |
|---|---|---|
| CAT24M01WI | OK | OK |
| AT24C256 | OK | OK |
| Microchip 24LC256 | OK | OK |
| AT24C32N | OK | OK |
| AT24C08 | OK | OK |