Merge branch 'refactor'

This merges the libmaple refactor work into master.  The contents of
libmaple proper (/libmaple/) are almost completely incompatible with
previous APIs in master.  See /docs/source/libmaple/overview.rst for
more information on the new design.

Wirish incompatibilities are limited to the HardwareTimer class;
however, there are several new deprecations, most likely to be removed
in 0.1.0.

1 files changed, 22 insertions, 33 deletions

diff --git a/examples/test-systick.cpp b/examples/test-systick.cpp
index 247892d..78c7307 100644
--- a/examples/test-systick.cpp
+++ b/examples/test-systick.cpp
@@ -1,59 +1,48 @@
 // Tests the SysTick enable/disable functions
-//
+
 #include "wirish.h"
 #include "systick.h"
 
-#define LED_PIN 13
-#define PWM_PIN  2
-#define BUT     38
-
-void setup()
-{
-    /* Set up the LED to blink  */
-    pinMode(LED_PIN, OUTPUT);
-
-    /* Turn on PWM on pin PWM_PIN */
-    pinMode(PWM_PIN, PWM);
-    pwmWrite(PWM_PIN, 0x8000);
-
-    pinMode(BUT, INPUT_PULLDOWN);
+void setup() {
+    pinMode(BOARD_LED_PIN, OUTPUT);
+    pinMode(BOARD_BUTTON_PIN, INPUT);
 }
 
-int toggle = 0;
+bool disable = true;
 long time = 0;
 
 void loop() {
-    toggle ^= 1;
-    digitalWrite(LED_PIN, toggle);
+    volatile int i = 0;
+    toggleLED();
 
     // An artificial delay
-    int16 i = 1;
-    float j = 1;
-    for(i=0; i<6553; i++) {
-        j = sqrt(j) + 1; 
-    }
-        
-    if(digitalRead(BUT)) {
-        systick_disable();
-    } else {
-        systick_resume();
+    for(i = 0; i < 150000; i++)
+        ;
+
+    if (isButtonPressed()) {
+        if (disable) {
+            systick_disable();
+            SerialUSB.println("Disabling SysTick");
+        } else {
+            SerialUSB.println("Re-enabling SysTick");
+            systick_enable();
+        }
+        disable = !disable;
     }
 
-    //SerialUSB.println(micros());      // there is a bug with this
     SerialUSB.println(millis());
 }
 
 // Force init to be called *first*, i.e. before static object allocation.
 // Otherwise, statically allocated object that need libmaple may fail.
- __attribute__(( constructor )) void premain() {
+__attribute__((constructor)) void premain() {
     init();
 }
 
-int main(void)
-{
+int main(void) {
     setup();
 
-    while (1) {
+    while (true) {
         loop();
     }
     return 0;