Add state signalisation via blipping GPIO17

example/advanced/Power_Measurements/ESP32_baseline/ESP32_baseline.ino

@@ -42,9 +42,9 @@ void stress_task(void *pvParameters) {
 
 void setup() {
   Serial.begin(115200);
-  while (!Serial) {
+  // while (!Serial) {
-    ;
+  //   ;
-  }
+  // }
   uint32_t Freq = getCpuFrequencyMhz();
   Serial.print("CPU Freq = ");
   Serial.print(Freq);
@@ -87,6 +87,17 @@ void setup() {
   Serial.end();
 }
 
+void blip_io(int times) {
+  constexpr int ioPin = 17;
+  pinMode(ioPin, OUTPUT);
+  for(int i = 0; i<times; i++) {
+    digitalWrite(ioPin,1);
+    delay(1);
+    digitalWrite(ioPin,0);
+    delay(1);
+  }
+}
+
 /*
  * A function that prints to serial, setting up the serial peripheral beforehand, and shutting it down afterwards.
  * Do not use this on a regular basis, as it is probably very slow. It is useful for not having the serial peripheral
@@ -96,10 +107,6 @@ void setup() {
  */
 void setupAndCleanupSerialPrint(char *str) {
   Serial.begin(115200);
-  while (!Serial) {
-    ;
-    ;
-  }
   delay(10);
   Serial.print(str);
   delay(10);
@@ -111,6 +118,7 @@ void setupAndCleanupSerialPrint(char *str) {
 void loop() {
   // Alternate between 20 Seconds at 100% CPU load, no artificial load but not sleeping, and normal behaviour (light sleep when there is nothing to do).
   setupAndCleanupSerialPrint("Beginning stress phase\n");
+  blip_io(1);
   TaskHandle_t core0StressTask = NULL;
   TaskHandle_t core1StressTask = NULL;
   xTaskCreatePinnedToCore(stress_task, "CPU0Stress", 4096, NULL, 1, &core0StressTask, 0);
@@ -123,12 +131,14 @@ void loop() {
   vTaskDelete(core1StressTask);
   // Now disable light sleep
   setupAndCleanupSerialPrint("Beginning idle with power management disabled\n");
+  blip_io(2);
   esp_pm_lock_acquire(cpuFreqLock);
   esp_pm_lock_acquire(apbFreqLock);
   esp_pm_lock_acquire(lightSleepLock);
   vTaskDelay(pdMS_TO_TICKS(cycleTime));
   // Restore auto light sleep and dynamic frequency scaling
   setupAndCleanupSerialPrint("Beginning idle with power management reenabled\n");
+  blip_io(3);
   esp_pm_lock_release(cpuFreqLock);
   esp_pm_lock_release(apbFreqLock);
   esp_pm_lock_release(lightSleepLock);

example/advanced/Power_Measurements/ESP32_baseline/whetstone.c

@@ -0,0 +1,230 @@
+/*
+ *      Whetstone benchmark in C.  This program is a translation of the
+ *	original Algol version in "A Synthetic Benchmark" by H.J. Curnow
+ *      and B.A. Wichman in Computer Journal, Vol  19 #1, February 1976.
+ *
+ *	Used to test compiler optimization and floating point performance.
+ *
+ *	Compile by:		cc -O -s -o whet whet.c
+ *	or:			cc -O -DPOUT -s -o whet whet.c
+ *	if output is desired.
+ */
+
+#define ITERATIONS	10 /* 1 Million Whetstone instructions */
+
+#include "math.h"
+
+double		x1, x2, x3, x4, x, y, z, t, t1, t2;
+double 		e1[4];
+int		i, j, k, l, n1, n2, n3, n4, n6, n7, n8, n9, n10, n11;
+
+run_bench()
+{
+
+	/* initialize constants */
+
+	t   =   0.499975;
+	t1  =   0.50025;
+	t2  =   2.0;
+
+	/* set values of module weights */
+
+	n1  =   0 * ITERATIONS;
+	n2  =  12 * ITERATIONS;
+	n3  =  14 * ITERATIONS;
+	n4  = 345 * ITERATIONS;
+	n6  = 210 * ITERATIONS;
+	n7  =  32 * ITERATIONS;
+	n8  = 899 * ITERATIONS;
+	n9  = 616 * ITERATIONS;
+	n10 =   0 * ITERATIONS;
+	n11 =  93 * ITERATIONS;
+
+/* MODULE 1:  simple identifiers */
+
+	x1 =  1.0;
+	x2 = x3 = x4 = -1.0;
+
+	for(i = 1; i <= n1; i += 1) {
+		x1 = ( x1 + x2 + x3 - x4 ) * t;
+		x2 = ( x1 + x2 - x3 - x4 ) * t;
+		x3 = ( x1 - x2 + x3 + x4 ) * t;
+		x4 = (-x1 + x2 + x3 + x4 ) * t;
+	}
+#ifdef POUT
+	pout(n1, n1, n1, x1, x2, x3, x4);
+#endif
+
+
+/* MODULE 2:  array elements */
+
+	e1[0] =  1.0;
+	e1[1] = e1[2] = e1[3] = -1.0;
+
+	for (i = 1; i <= n2; i +=1) {
+		e1[0] = ( e1[0] + e1[1] + e1[2] - e1[3] ) * t;
+		e1[1] = ( e1[0] + e1[1] - e1[2] + e1[3] ) * t;
+		e1[2] = ( e1[0] - e1[1] + e1[2] + e1[3] ) * t;
+		e1[3] = (-e1[0] + e1[1] + e1[2] + e1[3] ) * t;
+	}
+#ifdef POUT
+	pout(n2, n3, n2, e1[0], e1[1], e1[2], e1[3]);
+#endif
+
+/* MODULE 3:  array as parameter */
+
+	for (i = 1; i <= n3; i += 1)
+		pa(e1);
+#ifdef POUT
+	pout(n3, n2, n2, e1[0], e1[1], e1[2], e1[3]);
+#endif
+
+/* MODULE 4:  conditional jumps */
+
+	j = 1;
+	for (i = 1; i <= n4; i += 1) {
+		if (j == 1)
+			j = 2;
+		else
+			j = 3;
+
+		if (j > 2)
+			j = 0;
+		else
+			j = 1;
+
+		if (j < 1 )
+			j = 1;
+		else
+			j = 0;
+	}
+#ifdef POUT
+	pout(n4, j, j, x1, x2, x3, x4);
+#endif
+
+/* MODULE 5:  omitted */
+
+/* MODULE 6:  integer arithmetic */
+
+	j = 1;
+	k = 2;
+	l = 3;
+
+	for (i = 1; i <= n6; i += 1) {
+		j = j * (k - j) * (l -k);
+		k = l * k - (l - j) * k;
+		l = (l - k) * (k + j);
+
+		e1[l - 2] = j + k + l;		/* C arrays are zero based */
+		e1[k - 2] = j * k * l;
+	}
+#ifdef POUT
+	pout(n6, j, k, e1[0], e1[1], e1[2], e1[3]);
+#endif
+
+/* MODULE 7:  trig. functions */
+
+	x = y = 0.5;
+
+	for(i = 1; i <= n7; i +=1) {
+		x = t * atan(t2*sin(x)*cos(x)/(cos(x+y)+cos(x-y)-1.0));
+		y = t * atan(t2*sin(y)*cos(y)/(cos(x+y)+cos(x-y)-1.0));
+	}
+#ifdef POUT
+	pout(n7, j, k, x, x, y, y);
+#endif
+
+/* MODULE 8:  procedure calls */
+
+	x = y = z = 1.0;
+
+	for (i = 1; i <= n8; i +=1)
+		p3(x, y, &z);
+#ifdef POUT
+	pout(n8, j, k, x, y, z, z);
+#endif
+
+/* MODULE9:  array references */
+
+	j = 1;
+	k = 2;
+	l = 3;
+
+	e1[0] = 1.0;
+	e1[1] = 2.0;
+	e1[2] = 3.0;
+
+	for(i = 1; i <= n9; i += 1)
+		p0();
+#ifdef POUT
+	pout(n9, j, k, e1[0], e1[1], e1[2], e1[3]);
+#endif
+
+/* MODULE10:  integer arithmetic */
+
+	j = 2;
+	k = 3;
+
+	for(i = 1; i <= n10; i +=1) {
+		j = j + k;
+		k = j + k;
+		j = k - j;
+		k = k - j - j;
+	}
+#ifdef POUT
+	pout(n10, j, k, x1, x2, x3, x4);
+#endif
+
+/* MODULE11:  standard functions */
+
+	x = 0.75;
+	for(i = 1; i <= n11; i +=1)
+		x = sqrt( exp( log(x) / t1));
+
+#ifdef POUT
+	pout(n11, j, k, x, x, x, x);
+#endif
+}
+
+pa(e)
+double e[4];
+{
+	register int j;
+
+	j = 0;
+     lab:
+	e[0] = (  e[0] + e[1] + e[2] - e[3] ) * t;
+	e[1] = (  e[0] + e[1] - e[2] + e[3] ) * t;
+	e[2] = (  e[0] - e[1] + e[2] + e[3] ) * t;
+	e[3] = ( -e[0] + e[1] + e[2] + e[3] ) / t2;
+	j += 1;
+	if (j < 6)
+		goto lab;
+}
+
+
+p3(x, y, z)
+double x, y, *z;
+{
+	x  = t * (x + y);
+	y  = t * (x + y);
+	*z = (x + y) /t2;
+}
+
+
+p0()
+{
+	e1[j] = e1[k];
+	e1[k] = e1[l];
+	e1[l] = e1[j];
+}
+
+#ifdef POUT
+pout(n, j, k, x1, x2, x3, x4)
+int n, j, k;
+double x1, x2, x3, x4;
+{
+	printf("%6d%6d%6d  %5e  %5e  %5e  %5e\n",
+		n, j, k, x1, x2, x3, x4);
+}
+#endif

example/advanced/Power_Measurements/WLAN/WLAN.ino

@@ -31,5 +31,4 @@ void handle_receive(String &message) {
 void loop() {
     /* Continuously send to consume power on TX */
     dezibot.communication.sendMessage("Power Test Message");
-
 }