mjb/altos/src/drivers/ao_gps_ublox.c, branch 1.7

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

2016-12-18T05:04:33+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

Switch from GPLv2 to GPLv2+

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

Signed-off-by: Keith Packard

altos: Scale DOP values by 10 in GPS drivers

2014-07-11T00:35:44+00:00

sky traq was scaling by 5, ublox was scaling by 100. Signed-off-by: Keith Packard

altos: Extend GPS altitudes to at least 24 bits everywhere

2014-07-11T00:35:44+00:00

Telemetry gets a special 'mode' flag indicating that 24-bit data is present; log files get new data and log readers are expected to detect that via the firmware version number. Signed-off-by: Keith Packard

Revert "altos: Write current flight state to GPS data from GPS drivers"

2014-06-10T16:36:59+00:00

This reverts commit db6003d34595fbd103d5b131912b6a797254f1c5.

altos: Write current flight state to GPS data from GPS drivers

2014-06-07T18:39:10+00:00

This will be useful with TeleGPS which has no other packet containing flight state. Signed-off-by: Keith Packard

altos: Expose ao_gps_set_rate from u-blox driver

2014-05-21T08:43:13+00:00

This lets applications set the desired GPS update rate to reduce power usage Signed-off-by: Keith Packard

altos: ublox driver always offers course data when it has a fix

2014-05-09T03:44:10+00:00

Set the AO_GPS_COURSE_VALID bit to signal that this part of the GPS data is valid. Signed-off-by: Keith Packard

altos: Don't write more than 12 sat infos in ublox driver

2014-02-09T04:13:38+00:00

This was overwriting memory past the end of the ao_gps_tracking_data array, which isn't a good idea. Signed-off-by: Keith Packard

altos: Fix GPS test frameworks to handle shared ao_gps_new variable

2013-10-25T11:03:39+00:00

Signed-off-by: Keith Packard