altos/chaoskey-v1.0: Add endpoint for reading flash contents

[fw/altos] / src / drivers / ao_button.c

diff --git a/src/drivers/ao_button.c b/src/drivers/ao_button.c
index 8e7dead71df6d075014a233c0d43c77f973a59a9..07e92c670f3a1c590aed332b875d3f8fc66e46b3 100644 (file)
--- a/src/drivers/ao_button.c
+++ b/src/drivers/ao_button.c
@@ -3,7 +3,8 @@
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -38,8 +39,16 @@ static struct ao_button_state        ao_button_state[AO_BUTTON_COUNT];
 #define bit(q) AO_BUTTON_ ## q
 #define pin(q) AO_BUTTON_ ## q ## _PIN
 
+#ifndef AO_BUTTON_INVERTED
+#define AO_BUTTON_INVERTED     1
+#endif
+
+#if AO_BUTTON_INVERTED
 /* pins are inverted */
 #define ao_button_value(b)     !ao_gpio_get(port(b), bit(b), pin(b))
+#else
+#define ao_button_value(b)     ao_gpio_get(port(b), bit(b), pin(b))
+#endif
 
 static uint8_t
 _ao_button_get(uint8_t b)
@@ -92,6 +101,12 @@ _ao_button_init(uint8_t b)
 
 }
 
+uint8_t
+ao_button_get(uint8_t b)
+{
+       return ao_button_state[b].value;
+}
+
 static void
 ao_button_isr(void)
 {