mjb/altos/src/stm/ao_arch_funcs.h, branch debian/1.3.2-1

altos/stm: New GAS version requires flags in APSR assignment

2013-10-08T16:20:12+00:00

Signed-off-by: Keith Packard

altos/lpc, altos/stm: ARM requires ISB after switching stack pointers

2013-10-08T04:53:53+00:00

This sticks a barrier in the CPU to prevent using the wrong stack register past the change. Signed-off-by: Keith Packard

altos/stm: Make sampling profiler work again

2013-08-29T04:08:51+00:00

Disable the separate stack as that means we can't figure out the PC from the timer interrupt. Move ao_idle_loc after the interrupt release so that we see idle tasks correctly. Signed-off-by: Keith Packard

altos: Grab SPI mutex until MPU6000 I2C mode is disabled

2013-05-16T05:13:08+00:00

If other drivers use the SPI bus, the MPU6000 gets confused as its sitting on the bus looking for I2C messages. Just grab the mutex before the OS is running and hold onto it until the MPU6000 has been initialized. Signed-off-by: Keith Packard

altos/stm: Don't define task macros when not tasking

2013-05-08T04:30:26+00:00

The necessary data structures aren't defined in this case. Signed-off-by: Keith Packard

Add STM self-flashing loader

2013-05-08T03:12:40+00:00

This allows the real application to get loaded at 0x2000 and jumps to that at startup time if the boot pin is set appropriately Signed-off-by: Keith Packard

altos: Use separate exception stack on STM32L

2013-05-08T03:08:00+00:00

This reserves 512 bytes of memory for a stack, then makes sure that exceptions continue to use that stack while processes use the per-task stack. Signed-off-by: Keith Packard

altos: Crank fast SPI on STM to 8MHz

2013-01-14T04:54:14+00:00

With the GPIO pins set to 10MHz now, we can run SPI at the maximum possible speed (8MHz). Signed-off-by: Keith Packard

altos: Make stdio 8-bit clean by making pollchar return int

2012-12-01T00:01:07+00:00

We were stealing one value (0xff) in the return value from pollchar to indicate 'not ready yet'. Instead of doing that, use the integer value -1 and have pollchar return an int instead of a char. That necessitated cleaning a few other bits to make sure that 0xff wouldn't get promoted to -1 on accident. 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