mjb/altos/src/drivers, branch lisp

altos/draw: Add a reasonable API for drawing, add lines.

2016-11-21T05:02:59+00:00

Also, move the demo drawing into the stm-vga app and out of the vga driver. Signed-off-by: Keith Packard

altos/stm: Use basepri instead of primask for controlling interrupts

2016-11-21T04:48:40+00:00

This allows for high priority interrupts (priority 0) to run, even when other interrupts are blocked. Code executing in such interrupt handlers must not attempt to control task execution as that will race with the scheduler. Signed-off-by: Keith Packard

altos/stm-vga: Fix DMA reset to load scanline each time

2016-11-20T09:42:22+00:00

If we load the scanline register while DMA is running, it doesn't actually get reloaded until after the first transfer from the next line, leaving a weird jog in the middle of the screen. Also flip to SPI1, as Bdale is using that on the 1802 board. Signed-off-by: Keith Packard

altos/stm-vga: Implement VGA out from the STM processor

2016-11-20T08:04:27+00:00

Generates vsync/hsync using timers and pixel data using the SPI port. 320x240 video using 640x480 mode and a 24MHz "pixel" clock. Includes the beginings of rendering code for the frame buffer, including bitblt, solid fill and text with a 5x7 font. 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