From 75ca654c2a3a4cce24459a381311c259ce7ce8a3 Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Thu, 24 Mar 2022 22:55:13 -0700
Subject: GPIO Interrupts

---
 usr/timed.c | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

(limited to 'usr/timed.c')

diff --git a/usr/timed.c b/usr/timed.c
index 9247acf..fd4f923 100644
--- a/usr/timed.c
+++ b/usr/timed.c
@@ -1,4 +1,5 @@
 #define USR_TIMED_C
+#include <cpu.h>
 #include <globals.h>
 #include <graphics/lfb.h>
 #include <symbols.h>
@@ -6,6 +7,25 @@
 #include <usr/timed.h>
 #include <util/time.h>
 
+static unsigned long simulated = 0;
+
+void producer(void)
+{
+	draw_string(0, 15, "Producing...");
+	sys1(SYS_SEMAPHORE_V, &simulated);
+	draw_string(0, 15, "Produced!   ");
+}
+
+void consumer(void)
+{
+	add_thread(producer, 0, 4);
+	while (1) {
+		draw_string(0, 16, "Consuming...");
+		sys1(SYS_SEMAPHORE_P, &simulated);
+		draw_string(0, 16, "Consumed!   ");
+	}
+}
+
 void loop(void)
 {
 	static char str[13];
@@ -22,7 +42,14 @@ void loop(void)
 	draw_string(0, 12, "            ");
 	draw_string(0, 12, start);
 	previous++;
-	wait_msec(3000);
+	//unsigned long gplev0 = *(volatile unsigned long*)GPLEV0;
+	//static unsigned long count = 0;
+	//draw_hex32(0, 13, gplev0);
+	//if (gplev0 & (1 << 16)) {
+	//	draw_hex32(0, 17, count++);
+	//	add_thread(producer, 0, 4);
+	//}
+	wait_msec(30000);
 	add_thread(loop, 0, 3);
 }
 
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