mjb/altos/src/stm, branch altosui-ms5611

altos/stm: Support LEDs on multiple ports

2012-11-01T17:48:08+00:00

Split out the bits in a fairly simplistic fashion so that we support no more than 16 LEDs still. Signed-off-by: Keith Packard

altos: Provide ao_task_alarm_tick to reduce per-tick cost

2012-10-26T21:07:04+00:00

Cache the next wakeup time and check that before jumping to the task code. Signed-off-by: Keith Packard

altos: Leave interrupts disabled while checking for task to run

2012-10-26T21:07:04+00:00

Otherwise, we run the risk of an interrupt waking a task after we've decided to idle the CPU. Signed-off-by: Keith Packard

altos: Clean up stm arch macros a bit.

2012-10-25T20:38:13+00:00

Turn a bunch of the macros into inline functions. Clean up the reboot method to use the stm_scb structure. Signed-off-by: Keith Packard

altos: Switch drivers to ao_arch_block/release_interrupts

2012-10-25T18:25:42+00:00

Stop using cli/sei, which are avr-specific Signed-off-by: Keith Packard

altos: Add task queues.

2012-10-25T07:07:14+00:00

This replaces the array-based scheduler with a queue-based one instead. It should have the same basic scheduling semantics, but it walks shorter lists for each operation, making it much more efficient when the system has a lot of tasks. Signed-off-by: Keith Packard

altos: Add stack-guard code. Uses STM MPU to trap stack overflow.

2012-10-25T07:07:14+00:00

This marks the lowest portion of the stack as inaccessible to the CPU, causing the processor to fault when it reaches it. The fault then generates a panic message so that the user can know what happened. Signed-off-by: Keith Packard

altos: Replace __critical usage with ao_arch_critical as needed

2012-10-25T07:07:14+00:00

sdcc offers __critical as a machine-independent way to block interrupts, but as gcc doesn't, we need to use a compiler-independent construct instead. ao_arch_critical has been around since the AVR port, but some old __critical usages remained. This fixes a bunch of random hangs when communicating with MM over USB or the radio as the various stdio loops were running without interrupts blocked between the test and the sleep. Signed-off-by: Keith Packard

altos: profiling on STM32L

2012-10-25T07:07:14+00:00

Add sample-based profiling, using a 1kHz timer Signed-off-by: Keith Packard

altos: Force beep timer regs reload when enabling beeper

2012-10-25T07:07:14+00:00

Without this, there can be a long delay between asking for the beeper and having it actually start sounding. Signed-off-by: Keith Packard