altos: Document which TeleFire alarm pins are which

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

diff --git a/src/telefire-v0.2/ao_pins.h b/src/telefire-v0.2/ao_pins.h
index ef2d4822087e9f59157513890f9e0ea418fd4239..28cc65b92799e9ebd7672621571e8afa7b216648 100644 (file)
--- a/src/telefire-v0.2/ao_pins.h
+++ b/src/telefire-v0.2/ao_pins.h
@@ -97,11 +97,13 @@
 #define AO_PAD_ALL_PINS                ((1 << AO_PAD_PIN_0) | (1 << AO_PAD_PIN_1) | (1 << AO_PAD_PIN_2) | (1 << AO_PAD_PIN_3))
 #define AO_PAD_ALL_CHANNELS    ((1 << 0) | (1 << 1) | (1 << 2) | (1 << 3))
 
+/* Alarm 2 */
 #define AO_SIREN_PORT          P2
 #define AO_SIREN_DIR           P2DIR
 #define AO_SIREN_PIN           3
 #define AO_SIREN               P2_3
 
+/* Alarm 1 */
 #define AO_STROBE_PORT         P2
 #define AO_STROBE_DIR          P2DIR
 #define AO_STROBE_PIN          4