2 files changed, 103 insertions, 2 deletions
diff --git a/notes/pin-mapping.txt b/notes/pin-mapping.txt
index e6debf7..67a675c 100644
--- a/notes/pin-mapping.txt
+++ b/notes/pin-mapping.txt
@@ -7,6 +7,7 @@ PA15                   JTDI
 PB2                    BOOT1
 PB3                    JTDO
 PB4                    JTRST
+PC9                    BUT button
 PC11                   USB_P
 PC12                   DISC
 PD0                    OSC_IN
@@ -59,9 +60,9 @@ D34    PB15        -      TIM1_CH3N      -          -           SPI2_MOSI   Y
 D35    PC6         -      -              -          -           -           Y
 D36    PC7         -      -              -          -           -           Y
 D37    PC8         -      -              -          -           -           Y
-D38    PC9         -      -              -          -           -           Y
 -------------------------------------------------------------------------------
-
+Note: former pin D38 (PC9) is now attached to the BUT button and there is a
+GND connection where D38 was.
 
 todo:
 adc pin check
diff --git a/notes/portable.txt b/notes/portable.txt
new file mode 100644
index 0000000..69952d7
--- /dev/null
+++ b/notes/portable.txt
@@ -0,0 +1,100 @@
+
+Disclaimer text:  // High-density devices only (Maple Native)
+
+
+Board portability is implemented by adding a header file to ./libmaple with the
+name of the BOARD target, and then editing libmaple.h to add this file as an
+option.
+
+A pin maple file should be added to ./notes describing the pin numbering
+
+Files to check by hand:
+#   adc.c
+#   adc.h
+#   exc.c
+#   exti.c
+#   exti.h
+#   flash.c
+#   flash.h
+#   gpio.c
+#   gpio.h
+#   libmaple_types.h
+#   nvic.c
+#   nvic.h
+#   rcc.c
+#   rcc.h
+#   ring_buffer.h
+#   rules.mk
+#   spi.c
+-   spi.h
+#   syscalls.c
+#   systick.c
+#   systick.h
+#   timers.c
+#   timers.h
+#   usart.c
+#   usart.h
+#   util.c
+#   util.h
+#   libmaple.h
+#   usb/*
+
+wirish/:
+#   bits.h
+#   boards.h
+#   cxxabi-compat.cpp
+#   ext_interrupts.c
+#   ext_interrupts.h
+#   HardwareTimer.cpp
+#   HardwareTimer.h
+#   io.h
+#   main.cxx
+#   Print.cpp
+#   Print.h
+#   pwm.c
+#   pwm.h
+#   rules.mk
+#   time.c
+#   time.h
+#   usb_serial.cpp
+#   usb_serial.h
+#   wirish_analog.c
+#   wirish.c
+#   wirish_digital.c
+#   wirish.h
+#   wirish_math.cpp
+#   wirish_math.h
+#   wirish_shift.c
+#   WProgram.h
+-   comm/
+
+
+
+ADC Notes:
+    only using ADC1?
+    untested
+
+EXTI Notes:
+    need to update huge table in comments?
+    untested
+
+NVIC Notes:
+    I don't think NVIC_ISER3 and NVIC_ICER3 actually exist?
+    Only CANBUS and USB OTG use interrupts above #63, but I updated the nvic code anyways
+
+RCC Notes:
+    Added some clock stuff to all boards even though they aren't usable... blah.
+
+SPI Notes:
+    SPI3 is only in XL chips so didn't really handle that
+
+TIMER Notes:
+    High-density devices add an advanced timer (TIMER8) and another normal one (TIMER5).
+    TIMER6 and TIMER7 are much less useful.
+    There is some partial progress towards adding timer5/timer8 functionality,
+    but not much. This should probably all be rewritten.
+    The wirish timer implementation should be refactored to use pin numbers.
+
+USART Notes:
+    The USART/UART nomeclature is a little mixed up.
+    TODO: portability of HardwareSerial, HardwareSPI