Tag Archives: soldering

Serial console on Samsung E60 reader

Thanks to some discounts last January in France, I got a Samsung E60 reader.

A community started around the french forum (e60 – hardware.fr) and the google code (e60-open).

There are many information there especially on the serial console. I own an USB to serial adapter that uses LVTTL 3.3V signals (based on FTDI FT2232C) so I choose to connect on R232 and R233. But RXD (R232) is already connected to the MAX232 chip that shift LVTTL levels to serial levels, and it seams that this chip is styronger than my FTDI… So I removed R232 to connect me FTDI there. Remains to know on which PAD ? Luckily the first one I tried was the one: the one on the battery side.

A picture on my nice soldering:
E60 RS232 LVTTL 3.3V

That was it. I then followed the testing a kernel procedure thus loading the kernel image from the project’s SVN. And it worked ! (except that I had to unload the secbulk module, so it’s either me or it’s useless).

Next time, compiling and testing a Linux kernel.