1 files changed, 51 insertions, 0 deletions
diff --git a/tests/test-dac.cpp b/tests/test-dac.cpp
new file mode 100644
index 0000000..af188cc
--- /dev/null
+++ b/tests/test-dac.cpp
@@ -0,0 +1,51 @@
+/*
+ * Simple DAC test.
+ *
+ * Author: Marti Bolivar <mbolivar@leaflabs.com>
+ *
+ * This file is released into the public domain.
+ */
+
+#include <wirish/wirish.h>
+#include <libmaple/dac.h>
+
+uint16 count = 0;
+
+void setup() {
+    pinMode(BOARD_LED_PIN, OUTPUT);
+    digitalWrite(BOARD_LED_PIN, HIGH);
+
+    Serial1.begin(9600);
+    Serial1.println("**** Beginning DAC test");
+
+    Serial1.print("Init... ");
+    dac_init(DAC, DAC_CH1 | DAC_CH2);
+    Serial1.println("Done.");
+}
+
+void loop() {
+    toggleLED();
+    delay(100);
+
+    count += 100;
+    if (count > 4095) {
+        count = 0;
+    }
+
+    dac_write_channel(DAC, 1, 4095 - count);
+    dac_write_channel(DAC, 2, count);
+}
+
+__attribute__((constructor)) void premain() {
+    init();
+}
+
+int main(void) {
+    setup();
+
+    while (true) {
+        loop();
+    }
+    return 0;
+}
+