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authorMarti Bolivar <mbolivar@leaflabs.com>2012-04-09 16:38:01 -0400
committerMarti Bolivar <mbolivar@leaflabs.com>2012-04-11 16:56:57 -0400
commit08c56bb56a5ba4028ad761a8ff05ead0f54a549c (patch)
treee8d6b42d27e2a5912261c6cf2f2f77c5d2ac2933 /examples
parent378a766ec86694a6be0f8e38976473646c82702c (diff)
downloadlibrambutan-08c56bb56a5ba4028ad761a8ff05ead0f54a549c.tar.gz
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STM32F1: Add support for timers 9 through 14.
This applies to XL-density STM32F1 devices. In stm32f1/timer.c, add timer_dev's for the new timers, using the timer_private API. These definitions are conditionally compiled based on the target density to avoid wasting space on smaller MCUs. Also add calls to the appropriate timer_private.h dispatch routines within the IRQ handlers for these timers. We need to change the IRQ handler names to reflect this eventually, but put that off for now, as it could break backwards compatibility in some exotic situations where the user refers to the libmaple IRQ handlers directly. In stm32f1/timer.h, add register map base pointers and device declarations for the new timers. timer_dev* declarations are compiled in only when the target MCU supports them, in keeping with the above stm32f1/timer.c changes. In libmaple/timer.c, update the (static) IRQ enable routines to account for the additional timers. This adds some code that's unnecessary on smaller STM32F1s, but it's minimal (40 extra bytes on my machine), so portability and readability win out. Size change, using GCC version "(Sourcery G++ Lite 2011.03-42) 4.5.2": Before: text data bss dec hex filename 615 0 0 615 267 build/home/mbolivar/leaf/libmaple/libmaple/timer.o After: text data bss dec hex filename 655 0 0 655 28f build/home/mbolivar/leaf/libmaple/libmaple/timer.o Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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