1 files changed, 73 insertions, 0 deletions
diff --git a/movement/watch_faces/thermistor/thermistor_readout_face.c b/movement/watch_faces/thermistor/thermistor_readout_face.c
new file mode 100644
index 00000000..2a4ec3a1
--- /dev/null
+++ b/movement/watch_faces/thermistor/thermistor_readout_face.c
@@ -0,0 +1,73 @@
+#include <stdlib.h>
+#include <string.h>
+#include "thermistor_readout_face.h"
+#include "thermistor_driver.h"
+#include "watch.h"
+
+void _thermistor_readout_face_update_display(bool in_fahrenheit) {
+    float temperature_c = thermistor_driver_get_temperature();
+    char buf[14];
+    if (in_fahrenheit) {
+        sprintf(buf, "%4.1f#F", temperature_c * 1.8 + 32.0);
+    } else {
+        sprintf(buf, "%4.1f#C", temperature_c);
+    }
+    watch_display_string(buf, 4);
+}
+
+void thermistor_readout_face_setup(movement_settings_t *settings, void ** context_ptr) {
+    (void) settings;
+    (void) context_ptr;
+}
+
+void thermistor_readout_face_activate(movement_settings_t *settings, void *context) {
+    (void) settings;
+    (void) context;
+    watch_display_string("TE", 0);
+    thermistor_driver_enable();
+}
+
+bool thermistor_readout_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
+    (void) context;
+    watch_date_time date_time = watch_rtc_get_date_time();
+    switch (event.event_type) {
+        case EVENT_MODE_BUTTON_UP:
+            movement_move_to_next_face();
+            break;
+        case EVENT_LIGHT_BUTTON_DOWN:
+            movement_illuminate_led();
+            break;
+        case EVENT_ALARM_BUTTON_UP:
+            settings->bit.use_imperial_units = !settings->bit.use_imperial_units;
+            _thermistor_readout_face_update_display(settings->bit.use_imperial_units);
+            break;
+        case EVENT_ACTIVATE:
+            // force a measurement to be taken immediately.
+            date_time.unit.second = 0;
+            // fall through
+        case EVENT_TICK:
+            if (date_time.unit.second % 5 == 4) {
+                // Not 100% on this, but I like the idea of using the signal indicator to indicate that we're sensing data.
+                // In this case we turn the indicator on a second before the reading is taken, and clear it when we're done.
+                // In reality the measurement takes a fraction of a second, but this is just to show something is happening.
+                watch_set_indicator(WATCH_INDICATOR_SIGNAL);
+            } else if (date_time.unit.second % 5 == 0) {
+                _thermistor_readout_face_update_display(settings->bit.use_imperial_units);
+                watch_clear_indicator(WATCH_INDICATOR_SIGNAL);
+            }
+            break;
+        case EVENT_TIMEOUT:
+            movement_move_to_face(0);
+            break;
+        default:
+            break;
+    }
+
+    return true;
+}
+
+void thermistor_readout_face_resign(movement_settings_t *settings, void *context) {
+    (void) settings;
+    (void) context;
+    thermistor_driver_disable();
+}