mjb/altos/src/stm, branch 1.6.3

Revert "altos/stm: Run scheduler code on interrupt stack"

2016-04-30T15:51:53+00:00

This reverts commit 6a9546413d6a236c010e806b50506d870961d074. This causes the device to stop reliably handling interrupts.

altos/stm32l: Add support for software-driven HW flow control

2016-04-25T22:48:47+00:00

This allows applications to request that the flow control bits be driven from software rather than hardware, permitting more flexible pin configuration. Signed-off-by: Keith Packard

altos: Use TXE instead of TC for serial on STM32l

2016-04-25T15:49:16+00:00

Using TXE allows for full-speed communication, rather than waiting for each byte to be transmitted before inserting the next into the queue. Signed-off-by: Keith Packard

Debug bits for telebt

2016-04-25T15:47:45+00:00

altos: Add ao_gpi_set/clr_bits functions

2016-04-13T13:17:06+00:00

These set or clear a group of bits in a single GPIO register all together. Signed-off-by: Keith Packard

altos: Add one-byte SPI output routine for LPC and STM cores

2016-03-26T23:07:20+00:00

This allows for SPI output at interrupt time, one byte at a time. Signed-off-by: Keith Packard

altos/stm: Allow apps to define different stack size

2016-03-26T23:07:20+00:00

While 512 bytes is a reasonable size, sometimes apps don't have that much stack space. Signed-off-by: Keith Packard

altos/stm: Validate current task SP in interrupt by looking at PSP

2016-03-26T23:07:20+00:00

We use a separate stack pointer for task code, which means we can verify that it is in range in any interrupt handler. This adds checks for the task stack (under #ifdef DEBUG) that run in ao_wakeup as well as at every timer interrupt. Signed-off-by: Keith Packard

altos/stm: Run scheduler code on interrupt stack

2016-03-26T23:07:20+00:00

This provides a bit more room for tasks on their stack Signed-off-by: Keith Packard

altos: Expose fast timer API from kernel/

2016-03-18T17:17:24+00:00

This allows multiple SoCs to provide the same driver interface Signed-off-by: Keith Packard