kopia lustrzana https://github.com/Hamlib/Hamlib
34 wiersze
1.3 KiB
Plaintext
34 wiersze
1.3 KiB
Plaintext
|
Mail from <pab@users.sourceforge.net>, 02/06/01
|
||
|
|
|
||
|
|
Stephane mentioned the hamlib project to the
|
||
|
|
linradio.sourceforge.net developers a few weeks
|
||
|
|
ago. I believe my reply was routed to
|
||
|
|
/dev/null@shell1.sourceforge.net. Anyway I have
|
||
|
|
put some notes and early untested code at:
|
||
|
|
|
||
|
|
http://linradio.sourceforge.net/hamlib.html
|
||
|
|
|
||
|
|
|
||
|
|
Here are some winradio-specific issues:
|
||
|
|
- Winradios are simple (henceforth cheap) receivers. The software
|
||
|
|
driver does a lot of work that you would normally expect to see in
|
||
|
|
an embedded controller. The driver is about 100KB of C.
|
||
|
|
- Receivers come with ISA, PCMCIA and RS232 interfaces.
|
||
|
|
- The protocol varies a lot across the model range.
|
||
|
|
- Most models barely have an internal state. They can't even tell
|
||
|
|
which frequency they are tuned to.
|
||
|
|
- With most models, frequency sweeping must be done in software. This
|
||
|
|
requires real-time tricks with RS232 (currently suboptimal).
|
||
|
|
- High-end models have a DSP (not supported with Linux).
|
||
|
|
|
||
|
|
We are currently providing two abstractions for all of this:
|
||
|
|
- A kernel module which provides /dev/winradioX devices and ioctl API
|
||
|
|
(radio_ioctl.h).
|
||
|
|
- A user-mode driver which has problems with security (being root to
|
||
|
|
use ISA receivers) and RS232 performance.
|
||
|
|
|
||
|
|
The best approach is to create a hamlib-X.Y.Z/winradio/winradio.c file
|
||
|
|
that wraps our ioctl API (toolkit/driver/radio_ioctl.h) into a "struct
|
||
|
|
rig_caps".
|
||
|
|
|