Hi Katharina, thanks for your follow-up.
Can you please share which phone / modem models you have reproduced this with? Maybe I can find the same in my collection. I will try to run cardem on simtrace on a variety of different phones here and see which ones work or don't work. On Wed, May 26, 2021 at 03:03:38PM +0200, Katharina Kohls wrote: > BTW while debugging this I realized that the pin layout might be documented > in the wrong order: The wiki says TX is on 4 (pin 1 = GND, pin 4 = TX, pin 5 > = RX), however, for me it only worked when hooking up pin 5 with the RX of > my UART to USB. Is that a typo? I've always using the 2.5mm stereo jack, as those are used in a lot of Osmocom projects starting with OsmocomBB more than a decade ago. tHe 5-pin UART header was designed to match the FTDI USB-UART cable pin-out. The schematics are available, they should definitely be the definitive source to answer those kind of questions. It states: 1 GND 2 CTS 3 VCC 4 DRXD (SAM3) = TXD of your UART cable 5 DRXD (SAM3) = RXD of your UART 6 CTS Maybe the wiki could be further clarified? -- - Harald Welte <lafo...@osmocom.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)
