eppfpga - Baycom EPP modem with FPGA configuration/diagnostics tool

eppfpga [ -vh ] [-p portaddr] [-m modestr] [-t test]

eppfpga is the configuration and diagnostics utility for the Baycom EPP modem. It can be used to download the FPGA ``firmware'' or to execute various tests. This utility is also needed during ifconfig bcex up and therefore should reside in /sbin.

eppfpga accepts the following options:

-h

Display an overview of the available command line parameters and exit.

-v

Increases the verbosity of the output. May be cumulated.

-p

Specifies the base address of the EPP capable parallel port to which the modem is connected. Use the 0x prefix to specify hexadecimal numbers.

-m

Specifies various ``firmware'' options.

-t

Execute the named test. Tests may be stopped by pressing CTRL-C.

intclk

uses FPGA internal clock; don't use if an external oscillator is on board.

extclk

uses the external oscillator; recommended if the internal modem is used, as the frequency of the FPGA oscillator is not accurate enough.

intmodem

uses the internal modem

extmodem

uses a DF9IC type modem connected to the high speed modem connector

divider=x

sets the clock divider for the internal modem (baud=fquartz/16/divider)

loopback

sets an internal modem loopback

extstat

allows extended status readback

noextstat

disallows extended status readback

pttmute

mutes modulation signal output when PTT is off (default)

nopttmute

modulation signal is continuously output

ram

tests the on board SRAM using boundary scan

bled

tests the on board LED's using boundary scan; disconnect PTT during the test.

dac

tests the on board DAC using boundary scan

led

tests the CON and STA leds using EPP address write

ledfast

tests the CON and STA leds using fast EPP address write

berr

performs a BER test using the complete adapter. An external loopback is required.

berrv

performs a BER test using the complete adapter. Also prints out the received bits. An external loopback is required.

ccnt

frequency counter using the check firmware

cdac

fast DAC test using the check firmware

cram

fast RAM test using the check firmware

cled

LED test using the check firmware

ifconfig (8), sethdlc (8), 
linux/drivers/net/hamradio/baycom_epp.c

eppfpga was written by Thomas Sailer, HB9JNX/AE4WA (sailer@ife.ee.ethz.ch).