From 1bc48b075f76bfef258f516549573429b24f284c Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Sun, 2 Apr 2017 16:37:42 -0700
Subject: [PATCH] cortexelf-v1: Add buttons

Signed-off-by: Keith Packard <keithp@keithp.com>
---
 src/cortexelf-v1/Makefile       |  2 ++
 src/cortexelf-v1/ao_cortexelf.c | 20 ++++++++++++++++++++
 src/cortexelf-v1/ao_pins.h      | 24 ++++++++++++++++++++++++
 3 files changed, 46 insertions(+)

diff --git a/src/cortexelf-v1/Makefile b/src/cortexelf-v1/Makefile
index cea75ddf..f7c892bc 100644
--- a/src/cortexelf-v1/Makefile
+++ b/src/cortexelf-v1/Makefile
@@ -68,6 +68,8 @@ ALTOS_SRC = \
 	ao_bufio.c \
 	ao_fat.c \
 	ao_flash_stm.c \
+	ao_button.c \
+	ao_event.c \
 	ao_lisp_lex.c \
 	ao_lisp_mem.c \
 	ao_lisp_cons.c \
diff --git a/src/cortexelf-v1/ao_cortexelf.c b/src/cortexelf-v1/ao_cortexelf.c
index f9be59e8..8be7ef15 100644
--- a/src/cortexelf-v1/ao_cortexelf.c
+++ b/src/cortexelf-v1/ao_cortexelf.c
@@ -28,6 +28,8 @@
 #include <ao_sdcard.h>
 #include <ao_fat.h>
 #include <ao_lisp.h>
+#include <ao_button.h>
+#include <ao_event.h>
 
 struct ao_task ball_task;
 
@@ -208,6 +210,21 @@ __code struct ao_cmds ao_demo_cmds[] = {
 	{ 0, NULL }
 };
 
+static struct ao_task event_task;
+
+static void
+ao_event_loop(void)
+{
+	for (;;) {
+		struct ao_event	ev;
+
+		ao_event_get(&ev);
+		printf("type %d uint %d tick %d value %d\n",
+		       ev.type, ev.unit, ev.tick, ev.value);
+		flush();
+	}
+}
+
 int
 main(void)
 {
@@ -236,9 +253,12 @@ main(void)
 
 	ao_usb_init();
 
+	ao_button_init();
+
 	ao_config_init();
 
 	ao_add_task(&ball_task, ao_ball, "ball");
+	ao_add_task(&event_task, ao_event_loop, "events");
 	ao_cmd_register(&ao_demo_cmds[0]);
 
 	ao_start_scheduler();
diff --git a/src/cortexelf-v1/ao_pins.h b/src/cortexelf-v1/ao_pins.h
index e9c9deb3..d39f4022 100644
--- a/src/cortexelf-v1/ao_pins.h
+++ b/src/cortexelf-v1/ao_pins.h
@@ -125,4 +125,28 @@
 #define AO_SDCARD_SPI_MISO_PIN	3
 #define AO_SDCARD_SPI_MOSI_PIN	4
 
+/* Buttons */
+
+#define AO_EVENT	1
+
+#define AO_BUTTON_COUNT		4
+#define AO_BUTTON_MODE		AO_EXTI_MODE_PULL_DOWN
+
+/* INPUT */
+#define AO_BUTTON_0_PORT	(&stm_gpioc)
+#define AO_BUTTON_0		8
+
+/* MP */
+#define AO_BUTTON_1_PORT	(&stm_gpioc)
+#define AO_BUTTON_1		9
+
+/* RUN */
+#define AO_BUTTON_2_PORT	(&stm_gpioc)
+#define AO_BUTTON_2		10
+
+/* LOAD */
+#define AO_BUTTON_3_PORT	(&stm_gpioc)
+#define AO_BUTTON_3		11
+
+
 #endif /* _AO_PINS_H_ */
-- 
2.30.2