mjb/altos/src/drivers, branch debian/1.6.8-5

altos/arm: Align data so that gcc 5.4 doesn't do byte-accesses. Add -Wcast-align

2017-01-25T19:21:43+00:00

Gcc 5.4.1 tracks alignment of data through assignments, so that a uint32_t pointer which comes from byte-aligned uint8_t data: extern uint8_t foo[]; uint32_t *q = (void *) foo; Fetches and stores through this pointer are done bytewise. This is slow (meh), but if q references a device register, things to bad very quickly. This patch works around this bug in the compiler by adding __attribute__((aligned(4))) tags to some variables, or changing them from uint8_t to uint32_t. Places doing this will now be caught as I've added -Wcast-align to the compiler flags. That required adding (void *) casts, after the relevant code was checked to make sure the compiler could tell that the addresses were aligned. Signed-off-by: Keith Packard

altos/cc1120: remove unused status from ao_radio_fifo_write_stop

2016-08-29T16:27:53+00:00

Signed-off-by: Keith Packard

altos: Use standard FIPS testing for chaoskey

2016-08-02T23:55:11+00:00

Check to make sure we aren't repeating a block coming from the unwhitened source, which is the standard online FIPS test for RNGs. Signed-off-by: Keith Packard

altos: Make telelcotwo control two boxes instead of two pads

2016-08-02T23:55:11+00:00

telefiretwo is now a single pad box, so telelcotwo needs to switch between boxes instead of pads on the same box. Do this by re-purposing the pad arming switches into a box selector and arming switch. Signed-off-by: Keith Packard

altos: Add 'ao_button_get' to button driver

2016-08-02T23:55:11+00:00

This returns the current state of the button; useful to check what the value is at startup. Signed-off-by: Keith Packard

altos: Expose cc1200 radio test functions for telemini bringup

2016-07-27T20:24:57+00:00

This exposes the cc1200 radio test function so we can load special test firmware in telemini to do the radio cal as it has no USB to perform that interactively. Signed-off-by: Keith Packard

altos: Don't access cc1120 SPI bus during recv after abort has started

2016-07-27T20:17:51+00:00

When the receive timeout happens, the radio may still interrupt while the SPI bus is getting shut down. If this happens, the interrupt handler shouldn't touch the SPI bus at all as it may well be turned off, which would cause the receive function to wedge waiting for a spi byte transfer to happen. Signed-off-by: Keith Packard

Switch from GPLv2 to GPLv2+

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

Signed-off-by: Keith Packard

altos: Use FIFO_THR pin for cc1120 transmit buffering

2016-06-30T02:17:45+00:00

Instead of reading NUM_TXBYTES, set the FIFO_THR pin to indicate when 64 bytes are available in the buffer. Signed-off-by: Keith Packard

altos: cc1200: use FIFO threshold pin output for APRS buffering

2016-06-30T02:17:45+00:00

Instead of polling the device for fifo space, just use the available pin configuration to figure out if there is enough space for a single APRS buffer. Then set the APRS buffer size to match the fifo threshold setting in the chip so that we know we can write the whole APRS buffer once the pin says there's space. Signed-off-by: Keith Packard