Cleaned out libmaple.h; this had wide-ranging implications.

Many of the #defines in libmaple.h were board-specific, not
MCU-specific.  Most of these were only used by code under
libmaple/usb/.  These were moved into usb_config.h, and are clearly
marked as being terrible hacks.  I'm going to treat the USB stack as a
black box that we'll deal with later.

Further, instead of having a variety of #defines like "How many USARTS
do I have?", we decide that based on the density of the chip.  This is
determined by testing for STM32_MEDIUM_DENSITY or STM32_HIGH_DENSITY
defines.  libmaple currently doesn't support low-density chips, so
that suffices.  The Makefile will set these automatically based on the
MCU.

Other offending #defines are ERROR_LED_PORT and ERROR_LED_PIN; these
were made optional, but they're set in the Makefile as a hack to keep
things working.

1 files changed, 1 insertions, 2 deletions

diff --git a/examples/test-session.cpp b/examples/test-session.cpp
index 86bab6d..72d64d6 100644
--- a/examples/test-session.cpp
+++ b/examples/test-session.cpp
@@ -614,9 +614,8 @@ void init_all_timers(uint16 prescale) {
     timer_init(TIMER1, prescale);
     timer_init(TIMER2, prescale);
     timer_init(TIMER3, prescale);
-#if NR_TIMERS >= 4
     timer_init(TIMER4, prescale);
-#elif NR_TIMERS >= 8 // TODO test this on maple native
+#ifdef STM32_HIGH_DENSITY
     timer_init(TIMER5, prescale);
     timer_init(TIMER6, prescale);
     timer_init(TIMER7, prescale);