mjb/altos/src/drivers/ao_cc1120.c, branch altosdroid_v1.2

altos: Get CC115L radio working.

2013-03-30T00:05:36+00:00

This involved figuring out which GPIO signal would reliably indicate that the transmitter was finished; I ended up using the PA_PD bit for this. This also converts all of the radio users to the long packet support as the CC115L has only a 64-byte fifo, not large enough to hold either an RDF tone or a regular AltOS telemetry packet. This also renames the public API for sending APRS packets from ao_radio_send_lots to ao_radio_send_aprs, which is at least more accurate. The workings of that API haven't changed, just the name. Signed-off-by: Keith Packard

altos: Change CC1120 SPI speed to 4MHz.

2013-01-14T05:38:26+00:00

Most of the chip can run at 8MHz, but extended register access is limited to 6.1MHz. Instead of pushing things, just run the SPI bus at 4MHz. Signed-off-by: Keith Packard

Merge remote-tracking branch 'origin/micropeak-logging'

2013-01-11T05:48:12+00:00

altos: Time out reading packet data from cc1120 after 100ms

2013-01-11T05:44:18+00:00

Sometimes the radio will give a spurious wakeup indicating that a preamble seems to have arrived, but no packet data will appear. In this case, abandon the packet reception and go back to waiting for a preamble again. This releases the SPI bus for other users and also avoids missing packets. Signed-off-by: Keith Packard

Allow CC1120 to sit on other SPI busses

2012-12-31T22:22:37+00:00

Reading the incoming data bypasses the SPI API and touches the SPI data register directly; which port that is needs to be specified in the pins file Signed-off-by: Keith Packard

altos: Fix cc1120 debug code to build on megadongle

2012-12-29T02:34:33+00:00

RDF function had changed, and APRS isn't available on megadongle. Signed-off-by: Keith Packard

altos: Wire up another CC1120 GPIO to get MARC status changes

2012-12-17T00:04:05+00:00

When the radio drops out of RX or TX mode due to an error, it changes the MARC status, and sends pulse down a configured GPIO. Use this to tell when something 'bad' happened during TX or RX so that we can recover from losing the SPI bus in the middle of transmission or reception. Without this, the radio would change state and we'd never know, leaving the radio code waiting for an interrupt that would never arrive. Signed-off-by: Keith Packard

altos: Fix up APRS packet sending code in cc1120 driver

2012-12-07T18:15:25+00:00

This fixes the FIFO management, ensuring that the data are streamed into the radio fast enough to keep the packet continuous. Sounds like it works, but testing with an actual APRS receiver is required. Signed-off-by: Keith Packard

altos: Hook APRS up to the radio

2012-12-06T18:12:11+00:00

This adds an arbitrary-length packet writing function to the radio code. Signed-off-by: Keith Packard

altos: fix cc1120 radio test - state wasn't made static

2012-11-18T16:46:31+00:00

so whether the radio got turned on was random. Signed-off-by: Keith Packard