1 files changed, 45 insertions, 0 deletions
diff --git a/watch-library/watch/watch_adc.c b/watch-library/watch/watch_adc.c
new file mode 100644
index 00000000..ebb8bb60
--- /dev/null
+++ b/watch-library/watch/watch_adc.c
@@ -0,0 +1,45 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2020 Joey Castillo
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+ static bool ADC_0_ENABLED = false;
+
+void watch_enable_analog(const uint8_t pin) {
+    if (!ADC_0_ENABLED) ADC_0_init();
+    ADC_0_ENABLED = true;
+
+    gpio_set_pin_direction(pin, GPIO_DIRECTION_OFF);
+    switch (pin) {
+        case A0:
+            gpio_set_pin_function(A0, PINMUX_PB04B_ADC_AIN12);
+            break;
+        case A1:
+            gpio_set_pin_function(A1, PINMUX_PB01B_ADC_AIN9);
+            break;
+        case A2:
+            gpio_set_pin_function(A2, PINMUX_PB02B_ADC_AIN10);
+            break;
+        default:
+            return;
+    }
+}