mjb/altos/src/stm/ao_spi_stm.c, branch telemini

altos/stm: Ensure SPI always sends 0xff during receive

2013-03-26T21:26:38+00:00

SD cards require 0xff when fetching data Signed-off-by: Keith Packard

altos: Set STM GPIO output speed for SPI pins correctly

2013-01-14T04:54:14+00:00

The GPIO pin settings affect the output impedence, and hence the maximum speed for SPI. Cranking these to suitable values allows SPI to run at full speed. Signed-off-by: Keith Packard

altos/stm: Set SPI clock high for disabled SPI busses

2012-10-07T02:39:15+00:00

This should avoid an accidental low->high transition when switching between multiple SPI busses. Signed-off-by: Keith Packard

altos/stm: Clean up SPI pin configuration code

2012-10-07T00:56:23+00:00

Make sure none of the pin configurations are being used at startup time. Split out the pin configuration into separate functions. Signed-off-by: Keith Packard

altos: Allow STM SPI bus on multiple pin sets

2012-08-19T04:21:58+00:00

This allows multiple STM pin groups to be used for each SPI bus. Useful for the MS5607 sensor which signals conversion complete on the MISO line. Signed-off-by: Keith Packard

altos: include targe SPI speed in get request

2012-06-27T21:34:53+00:00

STM needs it to be provided when enabling the SPI device, so just fix AVR and cc1111 to do the same. Signed-off-by: Keith Packard

altos: Optimize FEC encode and decode

2012-06-27T06:11:10+00:00

Integrate interleaving, CRC and padding within the decode/encode functions. Provide for ISR priorities so that the 1120 RX interrupt takes precedence over the other interrupts or we risk losing bits. Optimize the viterbi decoder a bit (goes from 10ms per packet to 7ms per packet). Signed-off-by: Keith Packard

altos: Crank down STM SPI speed for MM

2012-06-21T16:46:50+00:00

The cc1120 is noisy enough to break SPI data transfers at 4MHz, so crank things down to 1MHz. It's "stable" now, but clearly needs a filter and shorter traces. Signed-off-by: Keith Packard

altos: Reduce STM SPI data rate to 4MHz

2012-06-16T05:41:17+00:00

cc1120 doesn't want more than 6.1MHz, otherwise it gets very angry. Signed-off-by: Keith Packard

altos: Starting to write cc1120 driver

2012-04-17T18:01:18+00:00

This does "something" in radio test mode, appearing to generate a 730MHz signal. Signed-off-by: Keith Packard