E1 related hardware projects (icE1usb, osmo-e1-tap, osmo-e1-xcvr, osmo-e1-tracer)
https://osmocom.org/projects/e1-t1-adapter/wiki
Harald Welte
f5e7264a27
This was originally in https://github.com/smunaut/ice40-playground
but has meanwhile been removed, only a fork at
https://github.com/laf0rge/ice40-playground remained.
Let's import the code here. The history is not all that exciting
so I'm saving myself the effort of git filter-branch or the like
to import the actual old commits.
The commit log is here for reference:
commit bd36d40cc30acbae68978df79eff03f0539a9a21
Author: Harald Welte <laforge@osmocom.org>
Date: Fri Sep 4 10:21:51 2020 +0200
e1-recorder main.c: Don't exist just because one ISO transfer failed
I get LIBUSB_TRANSFER_ERROR every so often (once every few hours) on my
laptop. Sure, it likely means there was some data lost, but the trace
can continue juts fine after this error. So make it non-fatal and
continue running.
commit 9b02b3e87400ba3d27bff05e2632fbd5a0698e8c
Author: Harald Welte <laforge@osmocom.org>
Date: Mon Aug 31 10:01:20 2020 +0200
Add 'replay' to re-play 2Mbps stream with realistic speed (to stdout)
commit 23103d3a8f9cc8b3f0ba602dbb4240040b2d008a
Author: Harald Welte <laforge@osmocom.org>
Date: Sun Aug 30 15:41:12 2020 +0200
dump: Use osmo_e1f to decode; send HLDC over GSMTAP
commit 7acd063a1245a34835d4488be3caad592f3c19d5
Author: Harald Welte <laforge@osmocom.org>
Date: Thu Aug 20 16:48:15 2020 +0200
dump.c: Add error plotting support
commit 90b90d04fff494b70ad220bd82ac48d43f3096c9
Author: Harald Welte <laforge@osmocom.org>
Date: Mon Jan 13 18:20:39 2020 +0100
dump: Add support for writing LAPD PCAP of E1 superchannel
commit f3a0cc34f0901c2cf257367351dddfddc6f7301e
Author: Harald Welte <laforge@osmocom.org>
Date: Mon Jan 13 16:37:23 2020 +0100
dump.c: Move handling of frames to separate function
commit 8deffb5907979e43e3a4236ea7bb8d54513513ac
Author: Harald Welte <laforge@osmocom.org>
Date: Mon Jan 13 16:34:39 2020 +0100
dump.c: remove local hexdump.[ch] and use libosmocore proper
commit 80d81e78737237ba3b6bae1deb7d5107d7f613b6
Author: Harald Welte <laforge@osmocom.org>
Date: Tue Sep 1 13:52:52 2020 +0200
tracer: use 0x6151 as PID
See
|
||
|---|---|---|
| contrib | ||
| doc | ||
| firmware/ice40-riscv | ||
| flashing | ||
| gateware | ||
| hardware | ||
| mechanical | ||
| software | ||
| .checkpatch.conf | ||
| .gitattributes | ||
| .gitignore | ||
| .gitmodules | ||
| README | ||
README
osmo-e1-hardware - Collection of various E1/TDM hardware projects ====================================================================== This repository hosts three different sub-projects: * osmo-e1-xcvr (E1 LIU + magnetics) https://osmocom.org/projects/e1-t1-adapter/wiki/Osmo-e1-xcvr * osmo-e1-tracer (fully integrated passive raw bitstream tracer) https://osmocom.org/projects/e1-t1-adapter/wiki/E1_tracer * osmo-e1-tap (passive high-impedance tap) == osmo-e1-xcvr == This is a simple hardware project that aims to generate a reusable module for interfacing E1/T1/J1 lines from various custom FPGA/CPLD/microcontroller projects. The board contains tranformers, the analog circuitry, the LIU (line interface unit), an oscillator as well as an integrated transceiver chip. It exposes the control interface (SPI) as well as the decoded synchronous Rx/Tx bitstreams each on a 2x5pin header. Framer, Multiplexe,r HDLC decoder or anything like that is out-of-scope for now. The idea relaly is to provide an interface as low-level as possible. One of the ideas is to create a "soft E1" interface, where the Rx/Tx bitstreams are interfaced with the SSC of an AT91SAM3S and subsequently passed into a PC via USB. The 2Mbps signal is very low-bandwidth, so that a pure software implementation should be absolutely no problem for todays computing power. See https://osmocom.org/projects/e1-t1-adapter/wiki/Osmo-e1-xcvr for more details == osmo-e1-tap == This is a small passive board that allows you to perform high-impedance tracing on an E1 or T1 line. == osmo-e1-tracer == This is a fully integrated design that allows you to obtainm bi-directional high-impedance bitstream E1 traces. It features an iCE40 FPGA with USB + E1 cores from Sylvain Munaut, as well as two E1 LIUs. See https://osmocom.org/projects/e1-t1-adapter/wiki/E1_tracer for more details.