From b573c7b0930ad5c3fce2d77596caf6da5a9040c5 Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Mon, 4 Apr 2022 14:20:01 -0700
Subject: Commented on how to run tests/ other threads in user application

---
 usr/main.c | 100 +++++++++++++++++++++++++++++++++++--------------------------
 1 file changed, 58 insertions(+), 42 deletions(-)

diff --git a/usr/main.c b/usr/main.c
index 8576400..f423a2a 100644
--- a/usr/main.c
+++ b/usr/main.c
@@ -9,42 +9,51 @@
 #include <usr/timed.h>
 #include <usr/uart.h>
 
-static struct SysTimerInfo stime_0 = {
-	.tick_rate = 5000000,
-	.priority = 0,
-	.arg = 0,
-	.oneshot = 0,
-};
+// IRQ Information Structures
+static struct SysTimerInfo stime_0 = { .tick_rate = 5000000, .priority = 0, .arg = 0, .oneshot = 0, };
+static struct SysTimerInfo stime_1 = { .tick_rate = 700000, .priority = 0, .arg = 0, .oneshot = 0, };
+static struct SysTimerInfo stime_2 = { .tick_rate = 300000, .priority = 0, .arg = 0, .oneshot = 0, };
+static struct SysTimerInfo stime_3 = { .tick_rate = 10, .priority = 0, .arg = 0, .oneshot = 0, };
+static struct UartInfo UART_INFO = { .priority = 2, };
+static struct GPIOInfo gpinfo = { .pin = (1<<16 | 1<<12), .priority = 0, };
 
-static struct SysTimerInfo stime_1 = {
-	.tick_rate = 700000,
-	.priority = 0,
-	.arg = 0,
-	.oneshot = 0,
-};
-
-static struct SysTimerInfo stime_2 = {
-	.tick_rate = 300000,
-	.priority = 0,
-	.arg = 0,
-	.oneshot = 0,
-};
-
-static struct SysTimerInfo stime_3 = {
-	.tick_rate = 10,
-	.priority = 0,
-	.arg = 0,
-	.oneshot = 0,
-};
-
-static struct UartInfo UART_INFO = {
-	.priority = 2,
-};
-
-static struct GPIOInfo gpinfo = {
-	.pin = (1<<16 | 1<<12),
-	.priority = 0,
-};
+void delaytest(void)
+{
+	static unsigned long count = 0;
+	static unsigned long long ts[4096*2+20];
+	sys0_64(SYS_TIME, &ts[count++]);
+	if (count == (4096*2+18)) {
+		unsubscribe_irq(SYS_TIMER_3_IRQ);
+		static char str[14];
+		char* start;
+		unsigned long mean=0, stdev=0, max=0, min=0xFFFFFFFF;
+		for (unsigned long i = 0; i < 4096; i++) {
+			unsigned long elapsed = ts[2*(i+2)+1]-ts[2*(i+2)];
+			elapsed *= 1000;
+			mean += elapsed;
+			if (elapsed > max)
+				max = elapsed;
+			if (elapsed < min)
+				min = elapsed;
+		}
+		mean /= 4096;
+		for (unsigned long i = 0; i < 4096; i++) {
+			unsigned long elapsed = ts[2*(i+2)+1]-ts[2*(i+2)];
+			elapsed *= 1000;
+			unsigned long term = (elapsed-mean)*(elapsed-mean)/4096;
+			stdev += term;
+		}
+		stdev = sqrt_rnd(stdev);
+		start = ulong_to_string(mean, str);
+		draw_string(0, 10, start);
+		start = ulong_to_string(stdev, str);
+		draw_string(0, 11, start);
+		start = ulong_to_string(min, str);
+		draw_string(0, 12, start);
+		start = ulong_to_string(max, str);
+		draw_string(0, 13, start);
+	}
+}
 
 void gptest(void)
 {
@@ -83,25 +92,32 @@ void gptest(void)
 		start = ulong_to_string(max, str);
 		draw_string(0, 13, start);
 	}
-	//unsigned long gplev0 = *GPLEV0;
-	//draw_hex32(0, 30, gplev0);
-	//start = ulong_to_string(count++, str);
-	//draw_string(0, 31, start);
 }
 
 void test_super(void);
 
 void main(void)
 {
+	// Runs the Core RTOS tests
+	add_thread(test_super, 0, 4);
+	// GPIO Tests
+	//subscribe_irq(GPIO_BANK_1_IRQ, gptest, &gpinfo);
+	// Delayed Execution Test
+	//subscribe_irq(SYS_TIMER_3_IRQ, delaytest, &stime_3);
+
+	// The following are examples of subscribing IRQs to specific callbacks
 	//subscribe_irq(UART_IRQ, handle_data, &UART_INFO);
 	//subscribe_irq(SYS_TIMER_0_IRQ, loopt, &stime_0);
 	//subscribe_irq(SYS_TIMER_1_IRQ, loopt, &stime_1);
 	//subscribe_irq(SYS_TIMER_2_IRQ, loopt, &stime_2);
 	//subscribe_irq(SYS_TIMER_3_IRQ, loopt, &stime_3);
-	subscribe_irq(GPIO_BANK_1_IRQ, gptest, &gpinfo);
+	//subscribe_irq(GPIO_BANK_1_IRQ, gptest, &gpinfo);
+
+	// Adding custom callbacks at different priorities example
 	//add_thread(loop, 0, 8);
 	//add_thread(consumer, 0, 3);
 	//add_thread(test_super, 0, 4);
-	//subscribe_irq(SYS_TIMER_3_IRQ, gptest, &stime_3);
-	cpp_demo(53);
+
+	// C++ Execution Demo
+	//cpp_demo(53);
 }
-- 
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