codal_app: Rename microphone event constants.

To make it clear they are events.

Signed-off-by: Damien George <[email protected]>

Author: dpgeorge

src/codal_app/microbithal.h

@@ -87,8 +87,9 @@ extern "C" {
 #define MICROBIT_HAL_ACCELEROMETER_EVT_SHAKE        (11)
 #define MICROBIT_HAL_ACCELEROMETER_EVT_2G           (12)
 
-#define MICROBIT_HAL_MICROPHONE_LEVEL_THRESHOLD_LOW (1)
-#define MICROBIT_HAL_MICROPHONE_LEVEL_THRESHOLD_HIGH (2)
+// Microphone events, passed to microbit_hal_level_detector_callback().
+#define MICROBIT_HAL_MICROPHONE_EVT_THRESHOLD_LOW   (1)
+#define MICROBIT_HAL_MICROPHONE_EVT_THRESHOLD_HIGH  (2)
 
 #define MICROBIT_HAL_LOG_TIMESTAMP_NONE             (0)
 #define MICROBIT_HAL_LOG_TIMESTAMP_MILLISECONDS     (1)

src/codal_port/microbit_microphone.c

@@ -50,9 +50,9 @@ static uint8_t sound_event_history_array[EVENT_HISTORY_SIZE];
 void microbit_hal_level_detector_callback(int value) {
     // Work out the sound event.
     uint8_t ev;
-    if (value == MICROBIT_HAL_MICROPHONE_LEVEL_THRESHOLD_LOW) {
+    if (value == MICROBIT_HAL_MICROPHONE_EVT_THRESHOLD_LOW) {
         ev = SOUND_EVENT_QUIET;
-    } else if (value == MICROBIT_HAL_MICROPHONE_LEVEL_THRESHOLD_HIGH) {
+    } else if (value == MICROBIT_HAL_MICROPHONE_EVT_THRESHOLD_HIGH) {
         ev = SOUND_EVENT_LOUD;
     } else {
         // Ignore unknown events.