pinMode(PWM) turns the channel on, other modes should turn it off
Fixes bug with conflicting timer for spi1 and timer. This is not
well-tested.
Conflicts:
libmaple/timers.c
Extend the wirish attachInterrupt() and detachInterrupt() interface to
work with all GPIOs.
Note: The STM32 external interrupt lines are multiplexed between GPIO
ports. While any GPIO can be used as an external interrupt, not all of
them can be used at the same time. Each EXTI[n] line selects between
PA[n], PB[n], PC[n], etc. For example, line EXTI5 can be used with STM32
pins PA5, PB5, or PC5, but not all at the same time. See table:
EXTI Line Maple Pin STM32 Pin
0 D2 PA0
0 D27 PB0
0 D15 PC0
1 D3 PA1
1 D28 PB1
1 D16 PC1
2 D1 PA2
2 D17 PC2
2 D25 PD2
3 D0 PA3
3 D18 PC3
4 D10 PA4
4 D19 PC4
5 D13 PA5
5 D4 PB5
5 D20 PC5
6 D12 PA6
6 D5 PB6
6 D35 PC6
7 D11 PA7
7 D9 PB7
7 D36 PC7
8 D6 PA8
8 D14 PB8
8 D37 PC8
9 D7 PA9
9 D24 PB9
9 D38 PC9 (BUT)
10 D8 PA10
10 D29 PB10
10 D26 PC10
11 D30 PB11
12 D31 PB12
13 D32 PB13
13 D21 PC13
14 D33 PB14
14 D22 PC14
15 D34 PB15
15 D23 PC15
ripped out marti's SystemTick for the sake of simplicity and added a
systick_resume function to libmaple. new example program demonstrates
the functionality, also demonstrates micros()/USB bug
Fixed millis(), it was just wrong, before.
Added micros(), not extensively tested.
New implementation of delayMicroseconds(). Should be more consistent
now.
Added a handful of nvic routines to enable/disable interrupts.
Cleaned up systick
as a temporary workaround for the fact that SerialUSB is often blocking,
this crude implementation makes the low-level C usbSendBytes function
non-blocking (with a return code of bytes sent) and implements a 2ms
timeout in the wirish write() function.
also adds begin(), end(), getDTR(), getRTS(), pending(). device is still
initialized the old fashioned way during init() so that, eg, autoreset
will work. includes a simple multi-test program.
Major build system rewrite. New and exciting:
1. Proper dependency tracking. All source files including header files
should be properly tracked and recompiled as necessary when they are
changed.
2. Build-type tracking. If the target changes from 'ram' to 'flash,'
for example, the build system will force a rebuild rather than
incorrectly link modules to a different address.
3. New targets:
The old 'ram,' 'flash,' and 'jtag' targets have been replaced with
the environment variable MAPLE_TARGET, which controls the link address.
Users can either export it to their environment, or pass MAPLE_TARGET on
the command-line. Once this is set, sketches can be compiled with 'make
sketch,' or simply 'make.'
Note: the default is MAPLE_TARGET='flash.'
The target 'install' now automagically uploads the sketch to the board
using the appropriate method.
The 'run' target has been renamed to 'debug.' It starts an openocd gdb
server.
4. Odds and ends:
-Verbose and 'quiet' modes. Set V=1 for verbose compilation, the default
is quiet.
-Object file sizes and disassembly information is generated and placed
in build/$(BOARD).sizes and build/$(BOARD).disas, respectively.
-Parallel make with -j should speed things up if you have multiple
cores.
