mjb/altos/src/drivers/ao_packet.c, branch debian/1.8.3-1

Switch from GPLv2 to GPLv2+

2016-07-12T22:41:41+00:00

Signed-off-by: Keith Packard

altos: Remove some accidental debug printfs from ao_packet.c

2015-02-15T16:57:55+00:00

While fixing the cc1200 configuration, I added some debug printfs to this code. They were accidentally committed with the fix... Signed-off-by: Keith Packard

altos/cc1200: Adjust bit-sync configuration

2015-02-15T07:18:38+00:00

The default bit timing adjustment mechanism allows for only a 0.2% deviation from the programmed bit timing. I found one TeleMini device which is beyond that tolerance as it was built with an older crystal with more error. Switch to the more expensive synchronization mechanism which allows up to 2% timing error, but requires a multi-byte preamble (which we have). This fixes packet mode nicely. Signed-off-by: Keith Packard

altos: Replace ao_alarm/ao_clear_alarm with ao_sleep_for

2015-02-14T07:51:10+00:00

Having arbitrary alarms firing in the middle of complicated device logic makes no sense at all. Therefore only correct use of ao_alarm and ao_clear_alarm was around a specific ao_sleep call, with correct recovery in case the alarm fires. This patch replaces all uses of ao_alarm/ao_sleep/ao_clear_alarm with ao_sleep_for, a new function which takes the alarm timeout directly. A few cases which weren't simply calling ao_sleep have been reworked to pass the timeout value down to the place where sleep *is* being called, and having that code deal with the return correctly. Signed-off-by: Keith Packard

altos: Compute "real" RSSI value in radio code as needed

2013-05-08T03:07:54+00:00

Instead of dragging around the weird CC1111 RSSI values, just compute a dBm value in a signed 8-bit integer, ao_radio_rssi. Use that everywhere we need RSSI internally. We leave the weird CC1111 value in the packet reply as that's what the host expects. Signed-off-by: Keith Packard

altos: Provide timeout value to ao_radio_recv

2013-05-08T03:07:52+00:00

Instead of using ao_alarm around calls to ao_radio_recv, provide an explicit timeout value as needed by radio functions with more complicated system interaction than the cc1111. The timeout is 8 bits of clock ticks. Signed-off-by: Keith Packard

altos: Do not release interrupts from any pollchar function

2013-03-31T19:24:24+00:00

getchar relies on interrupts being blocked across the pollchar calls and into the sleep call or it may go to sleep with data pending. This prefixes all pollchar functions with _ to indicate that they are to be called with interrupts blocked and eliminates all interrupt manipulation calls from within the pollchar functions. Signed-off-by: Keith Packard

altos: Make stdio 8-bit clean by making pollchar return int

2012-12-01T00:01:07+00:00

We were stealing one value (0xff) in the return value from pollchar to indicate 'not ready yet'. Instead of doing that, use the integer value -1 and have pollchar return an int instead of a char. That necessitated cleaning a few other bits to make sure that 0xff wouldn't get promoted to -1 on accident. Signed-off-by: Keith Packard

altos: Replace __critical usage with ao_arch_critical as needed

2012-10-25T07:07:14+00:00

sdcc offers __critical as a machine-independent way to block interrupts, but as gcc doesn't, we need to use a compiler-independent construct instead. ao_arch_critical has been around since the AVR port, but some old __critical usages remained. This fixes a bunch of random hangs when communicating with MM over USB or the radio as the various stdio loops were running without interrupts blocked between the test and the sleep. Signed-off-by: Keith Packard

altos: When slave mode first starts, accept any packet

2012-10-25T07:07:14+00:00

This eliminates the packet sequence matching for the first packet, allowing outstanding send data to arrive from the master instead of ignoring packets with data until they match the seqno Signed-off-by: Keith Packard