ar_wd initial commit

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2503 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
+tests of LEDs, main relay

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2505 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
simple serial communication to allow timer reset

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2507 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
enable buzzer together with warning led

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2509 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
initial support for variable frequency

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2510 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
ring_buffer implementation

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2513 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
play two tunes via buzzer so that wd reset could be distinguished from other pc speaker sounds

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2515 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
working ring_buffer implementation

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2516 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
move user interface to ISR handler

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2517 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
interrupt are disabled automatically on ISR invokation

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2518 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
no need to check if RXC0 is set when executing from USART_RX ISR

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2519 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
empty condition fix

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2520 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
basic support of various commands ("set" does not work yet)

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2521 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
add HELP_CMD; upload_nano target in Makefile

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2524 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
don't set max_counter_value if strtol returned 0

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2526 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
rm debug printfs

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2527 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
protect from small counter values

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2533 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
wd_ping script

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2535 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
add eagle scheme

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2541 d77ea471-5fd1-4dec-96fe-2912e94e7bdb
use non-blocking read from tty

git-svn-id: svn+ssh://fiord.dyndns.org/svn/repository/dls_administrative/dls_utils/ar_wd@2542 d77ea471-5fd1-4dec-96fe-2912e94e7bdb