Final stm32_pin_info design candidate; ADC3 support on Native.

Added an adc_dev to struct stm32_pin_info.  This was necessary to add
support for the channels on the Native which are only connected to
ADC3, but it does add a bunch of NULLs to the PIN_MAPs.

I don't think any other peripherals need representation on a per-pin
basis.  Each peripheral library will be responsible for keeping track
of related GPIO ports and bits, and we can throw #defines in to
boards/*.h for other things (e.g. BOARD_SPI1_MISO_PIN).

Fleshed out the ADC refactor and brought it more in keeping with the
new design as it evolves.

A couple of other tweaks.  Notably: waitForButtonPress() now takes a
default argument meaning "wait forever".

Removed Maple-specific documentation from core functions in io.h; this
information will need to go into the individual board docs files.

1 files changed, 12 insertions, 16 deletions

diff --git a/wirish/wirish_digital.cpp b/wirish/wirish_digital.cpp
index 278cf10..115e91e 100644
--- a/wirish/wirish_digital.cpp
+++ b/wirish/wirish_digital.cpp
@@ -70,20 +70,14 @@ void pinMode(uint8 pin, WiringPinMode mode) {
         return;
     }
 
-    gpio_set_mode(PIN_MAP[pin].gpio_device, PIN_MAP[pin].gpio_pin, outputMode);
+    gpio_set_mode(PIN_MAP[pin].gpio_device, PIN_MAP[pin].gpio_bit, outputMode);
 
     if (PIN_MAP[pin].timer_device != NULL) {
-        /* enable/disable timer channels if we're switching into or
-           out of pwm  */
-        if (pwm) {
-            timer_set_mode(PIN_MAP[pin].timer_device,
-                           PIN_MAP[pin].timer_chan,
-                           TIMER_PWM);
-        } else {
-            timer_set_mode(PIN_MAP[pin].timer_device,
-                           PIN_MAP[pin].timer_chan,
-                           TIMER_DISABLED);
-        }
+        /* Enable/disable timer channels if we're switching into or
+         * out of PWM. */
+        timer_set_mode(PIN_MAP[pin].timer_device,
+                       PIN_MAP[pin].timer_channel,
+                       pwm ? TIMER_PWM : TIMER_DISABLED);
     }
 }
 
@@ -93,7 +87,7 @@ uint32 digitalRead(uint8 pin) {
         return 0;
     }
 
-    return gpio_read_bit(PIN_MAP[pin].gpio_device, PIN_MAP[pin].gpio_pin) ?
+    return gpio_read_bit(PIN_MAP[pin].gpio_device, PIN_MAP[pin].gpio_bit) ?
         HIGH : LOW;
 }
 
@@ -102,7 +96,7 @@ void digitalWrite(uint8 pin, uint8 val) {
         return;
     }
 
-    gpio_write_bit(PIN_MAP[pin].gpio_device, PIN_MAP[pin].gpio_pin, val);
+    gpio_write_bit(PIN_MAP[pin].gpio_device, PIN_MAP[pin].gpio_bit, val);
 }
 
 void togglePin(uint8 pin) {
@@ -110,12 +104,14 @@ void togglePin(uint8 pin) {
         return;
     }
 
-    gpio_toggle_bit(PIN_MAP[pin].gpio_device, PIN_MAP[pin].gpio_pin);
+    gpio_toggle_bit(PIN_MAP[pin].gpio_device, PIN_MAP[pin].gpio_bit);
 }
 
+#define BUTTON_DEBOUNCE_DELAY 10
+
 uint8 isButtonPressed() {
     if (digitalRead(BOARD_BUTTON_PIN)) {
-        delay(1);
+        delay(BUTTON_DEBOUNCE_DELAY);
         while (digitalRead(BOARD_BUTTON_PIN))
             ;
         return true;