Hello!
I compiled kernel 2.0.35 and the soundmodem driver with afsk1200 and
fsk9600 bps support. It seems to work fine: I can use 'listen' to see
received packets and I can hear the soundblaster trying to send
outgoing packets, but the driver refuses to key the PTT!
I would like to use the serial port COM1 to enable transmission,
because I have a PS/2 mouse and a internal modem on COM4 which uses
int 3. COM1 uses int 4, so it should be free from any conflict. The
voltage across RTS and GND pins of the serial port always remains at
about -12V even when trasmitting or calibrating. I tested the serial
port by sending out random bytes on /dev/ttyS0:
cat test.txt >> /dev/ttyS0
and I measured a +12V on RTS, as it should be.
Why doesn't the soundmodem driver control RTS pin?
Thanks in advance,
Marco - iz8aeb
PS: Here are the commands I issue to the driver (9600 bps):
sethdlc -i sm0 mode sbc:fsk9600 io 0x220 irq 5 dma 1 dma2 5 serio
0x3f8
sethdlc -i sm0 -a txd 20 slot 50 ppersist 128 half
ifconfig sm0 hw ax25 IZ8AEB-2 up
