mjb/altos/src, branch 1.6

altos: ao_packet_getchar needs to return 'int' so AO_READ_AGAIN works

2015-02-07T21:09:18+00:00

With ao_packet_getchar returning 'char', AO_READ_AGAIN would get converted to 0xff instead of -1 on return, making ao_packet_echo either produce a bogus character on output, breaking command responses, or wedge and never exit when the link was dropped. Signed-off-by: Keith Packard

altos: Separate out ao_tracker force from dbg

2015-02-07T09:30:21+00:00

Allow enabling telemetry when USB is connected without also enabling the motion debugging output. Signed-off-by: Keith Packard

altos/lpc: Give up on interrupt-driven SPI driver

2015-02-07T09:05:57+00:00

There are just too many limitations in when interrupts are delivered to make them useful. Instead, just drive the SPI directly with the CPU. At higher spi speeds (6Mhz or more), it's probably faster to do it this way anyways. Signed-off-by: Keith Packard

altos/drivers: Increase SPI speed of CC115L to 6MHz

2015-02-07T09:05:03+00:00

The datasheet says that the maximum for back-to-back data is 6.5MHz. Signed-off-by: Keith Packard

altos/lpc: Double buffer USB data transfers

2015-02-06T00:15:04+00:00

This allocates twice the space in the USB memory so that transactions can be double buffered without using separate CPU memory. Signed-off-by: Keith Packard Conflicts: src/lpc/ao_usb_lpc.c

altos/lpc: Clean up USB endpoint access functions

2015-02-06T00:14:23+00:00

The USB device endpoints can have two pointers in them, but we use only the first. Fix the access functions to take an index as to which we want so that we can disable the other address registers with them instead of requiring open-coded access. Signed-off-by: Keith Packard

altos/easymini-v1.0: Shrink stack to deal with USB changes

2015-02-05T23:34:05+00:00

Reverting the USB double buffering means using more RAM, need to shrink the EasyMini stack to accomodate that. Signed-off-by: Keith Packard

altos/teledongle-v3.0: Shrink stacks to 320 bytes to fit in ram

2015-02-05T23:01:03+00:00

The old USB code had static in/out buffers in ram Signed-off-by: Keith Packard

Revert LPC usb performance improvements

2015-02-05T23:00:56+00:00

There's something screwy going on, sticking garbage in the input buffer at boot time Signed-off-by: Keith Packard

Revert "altos/lpc: Fix double-buffered USB changes"

2015-02-05T22:54:27+00:00

This reverts commit 41a0604ad1ea1a03e2db7d41731dbadf466b45db.