mjb/altos/src/stm, branch stm-flash

altos: Use SYSTICK on STM32L

2013-05-01T15:58:17+00:00

It's probably more power efficient than using one of the timers, and it's certainly easier to configure. Signed-off-by: Keith Packard

altos: Use separate exception stack on STM32L

2013-05-01T02:04:26+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: Allow LCD segments to not be multiplexed across digits

2013-04-29T06:08:03+00:00

This allows each LCD segment to be individually configured as to which COM and which SEG drives it, permitting maximum flexibility in wiring. Signed-off-by: Keith Packard

altos: Wait after configuring boot pin before testing it

2013-04-29T06:06:24+00:00

Clearly the pin isn't quite ready just after it's been configured, so hang around for a while (100 nops) to let things setting down before testing the value of the pin. Makes booting a lot more reliable. Signed-off-by: Keith Packard

altos/stm: Create per-product flash loaders

2013-04-27T22:33:04+00:00

Split the flash loader prototype into pieces so that each product can build a custom flash loader with very little code. Signed-off-by: Keith Packard

altos: Get rodata into flash, make sure sections are aligned

2013-04-27T07:24:08+00:00

.rodata* needs to be in flash; otherwise strings get left in ram. Failing to align sections makes the initialized data get dumped into the wrong place in memory. Signed-off-by: Keith Packard

altos: Run self loader when application sets boot addr to 0

2013-04-27T07:20:47+00:00

This causes the flash loader startup code to fall into the loader when the application sets the boot address to zero. Signed-off-by: Keith Packard

altos: Allow STM usb driver to be used without stdio

2013-04-27T07:19:13+00:00

This lets the self flashing loader be linked without any of the stdio code, which saves a bunch of memory. Signed-off-by: Keith Packard

altos/stm-flash: Check target flash address against AO_BOOT_APPLICATION_BASE

2013-04-23T02:08:35+00:00

Allows that value to change Signed-off-by: Keith Packard

altos: Use flash loader on all STM products

2013-04-23T01:54:45+00:00

Includes the boot chain stuff Signed-off-by: Keith Packard