From: Keith Packard <keithp@keithp.com>
Date: Mon, 3 Apr 2017 02:31:45 +0000 (-0700)
Subject: altos: Allow buttons to be high when pressed rather than low
X-Git-Tag: 1.7~62
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=79215de60d3e11b4abd1ecd2fa9575a323b76754

altos: Allow buttons to be high when pressed rather than low

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/src/drivers/ao_button.c b/src/drivers/ao_button.c
index 725ac45a..07e92c67 100644
--- a/src/drivers/ao_button.c
+++ b/src/drivers/ao_button.c
@@ -39,8 +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)