Run CI with add'l warning -Wdouble-promotion

libraries/BluetoothHIDMaster/examples/KeyboardPiano/KeyboardPiano.ino

@@ -91,7 +91,7 @@ void mb(void *cbdata, int butt, bool down) {
 inline uint32_t stepForHz(float hz) {
   const float stepHz = 1000.0 / 44100.0;
   const float step = hz * stepHz;
-  return (uint32_t)(step * 65536.0);
+  return (uint32_t)(step * 65536.0f);
 }
 
 uint32_t keyStepMap[128]; // The frequency of any raw HID key

libraries/BluetoothHIDMaster/examples/KeyboardPianoBLE/KeyboardPianoBLE.ino

@@ -91,7 +91,7 @@ void mb(void *cbdata, int butt, bool down) {
 inline uint32_t stepForHz(float hz) {
   const float stepHz = 1000.0 / 44100.0;
   const float step = hz * stepHz;
-  return (uint32_t)(step * 65536.0);
+  return (uint32_t)(step * 65536.0f);
 }
 
 uint32_t keyStepMap[128]; // The frequency of any raw HID key

libraries/LittleFS/examples/SpeedTest/SpeedTest.ino

@@ -21,11 +21,11 @@ const char *rate(unsigned long start, unsigned long stop, unsigned long bytes) {
     strcpy_P(buff, PSTR("Inf b/s"));
   } else {
     unsigned long delta = stop - start;
-    float r = 1000.0 * (float)bytes / (float)delta;
-    if (r >= 1000000.0) {
-      sprintf_P(buff, PSTR("%0.2f MB/s"), r / 1000000.0);
-    } else if (r >= 1000.0) {
-      sprintf_P(buff, PSTR("%0.2f KB/s"), r / 1000.0);
+    float r = 1000.0f * (float)bytes / (float)delta;
+    if (r >= 1000000.0f) {
+      sprintf_P(buff, PSTR("%0.2f MB/s"), (double)r / 1000000.0);
+    } else if (r >= 1000.0f) {
+      sprintf_P(buff, PSTR("%0.2f KB/s"), (double)r / 1000.0);
     } else {
       sprintf_P(buff, PSTR("%d bytes/s"), (int)r);
     }

libraries/Mouse/examples/Circle/Circle.ino

@@ -17,7 +17,7 @@ void loop() {
     float r = 100;
     float ox = 0.0;
     float oy = 0.0;
-    for (float a = 0; a < 2.0 * 3.14159; a += 0.1) {
+    for (float a = 0.0f; a < 2.0f * 3.14159f; a += 0.1f) {
       float ax = r * cos(a);
       float ay = r * sin(a);
       float dx = ax - ox;

libraries/MouseAbsolute/examples/CircleAbsolute/CircleAbsolute.ino

@@ -17,7 +17,7 @@ void loop() {
     float r = 1000;
     for (float cx = 1000; cx <= 16000; cx += 4000) {
       for (float cy = 1000; cy <= 16000; cy += 4000) {
-        for (float a = 0; a < 2.0 * 3.14159; a += 0.1) {
+        for (float a = 0.0f; a < 2.0f * 3.14159f; a += 0.1f) {
           float ax = r * cos(a);
           float ay = r * sin(a);
           MouseAbsolute.move(ax + cx, ay + cy, 0);

libraries/MouseBLE/examples/BLECircle/BLECircle.ino

@@ -16,7 +16,7 @@ void loop() {
     float r = 100;
     float ox = 0.0;
     float oy = 0.0;
-    for (float a = 0; a < 2.0 * 3.14159; a += 0.1) {
+    for (float a = 0.0f; a < 2.0f * 3.14159f; a += 0.1f) {
       float ax = r * cos(a);
       float ay = r * sin(a);
       float dx = ax - ox;

libraries/MouseBLE/examples/BLECircleAbsolute/BLECircleAbsolute.ino

@@ -17,7 +17,7 @@ void loop() {
     float r = 1000;
     for (float cx = 1000; cx <= 16000; cx += 4000) {
       for (float cy = 1000; cy <= 16000; cy += 4000) {
-        for (float a = 0; a < 2.0 * 3.14159; a += 0.1) {
+        for (float a = 0.0f; a < 2.0f * 3.14159f; a += 0.1f) {
           float ax = r * cos(a);
           float ay = r * sin(a);
           MouseBLE.move(ax + cx, ay + cy, 0);

libraries/MouseBLE/examples/BLECircleKeysJoystick/BLECircleKeysJoystick.ino

@@ -59,7 +59,7 @@ void loop() {
     float r = 100;
     float ox = 0.0;
     float oy = 0.0;
-    for (float a = 0; a < 2.0 * 3.14159; a += 0.1) {
+    for (float a = 0.0f; a < 2.0f * 3.14159f; a += 0.1f) {
       float ax = r * cos(a);
       float ay = r * sin(a);
       float dx = ax - ox;

libraries/MouseBT/examples/BTCircle/BTCircle.ino

@@ -17,7 +17,7 @@ void loop() {
     float r = 100;
     float ox = 0.0;
     float oy = 0.0;
-    for (float a = 0; a < 2.0 * 3.14159; a += 0.1) {
+    for (float a = 0.0f; a < 2.0f * 3.14159f; a += 0.1f) {
       float ax = r * cos(a);
       float ay = r * sin(a);
       float dx = ax - ox;

libraries/MouseBT/examples/BTCircleAbsolute/BTCircleAbsolute.ino

@@ -17,7 +17,7 @@ void loop() {
     float r = 1000;
     for (float cx = 1000; cx <= 16000; cx += 4000) {
       for (float cy = 1000; cy <= 16000; cy += 4000) {
-        for (float a = 0; a < 2.0 * 3.14159; a += 0.1) {
+        for (float a = 0.0f; a < 2.0f * 3.14159f; a += 0.1f) {
           float ax = r * cos(a);
           float ay = r * sin(a);
           MouseBT.move(ax + cx, ay + cy, 0);

libraries/SD/examples/CardInfo/CardInfo.ino

@@ -137,7 +137,7 @@ void setup() {
   volumesize /= 1024;
   Serial.println(volumesize);
   Serial.print("Volume size (Gb):  ");
-  Serial.println((float)volumesize / 1024.0);
+  Serial.println((float)volumesize / 1024.0f);
 
   Serial.print("Card size:  ");
   Serial.println((float)SD.size64() / 1000);

libraries/SingleFileDrive/examples/DataLoggerUSB/DataLoggerUSB.ino

@@ -82,7 +82,7 @@ void loop() {
     // Don't want the USB to connect during an update!
     File f = LittleFS.open("data.csv", "a");
     if (f) {
-      f.printf("%lu,%lu,%f,%lu\n", cnt++, millis(), temp, hwrand);
+      f.printf("%lu,%lu,%f,%lu\n", cnt++, millis(), (double)temp, hwrand);
       f.close();
     }
   }

libraries/lwIP_Ethernet/examples/EthernetLibCompatible/EthernetLibCompatible.ino

@@ -118,9 +118,9 @@ void loop() {
     Serial.print("Received ");
     Serial.print(byteCount);
     Serial.print(" bytes in ");
-    float seconds = (float)(endMicros - beginMicros) / 1000000.0;
+    float seconds = (float)(endMicros - beginMicros) / 1000000.0f;
     Serial.print(seconds, 4);
-    float rate = (float) byteCount / seconds / 1000.0;
+    float rate = (float) byteCount / seconds / 1000.0f;
     Serial.print(", rate = ");
     Serial.print(rate);
     Serial.print(" kbytes/second");

libraries/rp2040/examples/Temperature/Temperature.ino

@@ -6,6 +6,6 @@ void setup() {
 }
 
 void loop() {
-  Serial.printf("Core temperature: %2.1fC\n", analogReadTemp());
+  Serial.printf("Core temperature: %2.1fC\n", (double)analogReadTemp());
   delay(1000);
 }

tests/common.sh

@@ -41,6 +41,7 @@ EOL
 /UserSPIDriver/
 /Adafruit_TinyUSB_Arduino/
 /ArduinoISP/
+/p03_LoveOMeter/
 /p08_DigitalHourglass/
 /p13_TouchSensorLamp/
 /StringComparisonOperators/
@@ -234,8 +235,8 @@ function install_ide()
         debug_flags="-DDEBUG_RP2040_WIRE -DDEBUG_RP2040_SPI -DDEBUG_RP2040_CORE -DDEBUG_RP2040_PORT=Serial"
     fi
     # Set custom warnings for all builds (i.e. could add -Wextra at some point)
-    echo "compiler.c.extra_flags=-Wall -Wextra -Werror -Wno-ignored-qualifiers $debug_flags" > rp2040/platform.local.txt
-    echo "compiler.cpp.extra_flags=-Wall -Wextra -Werror -Wno-ignored-qualifiers -Wno-overloaded-virtual $debug_flags" >> rp2040/platform.local.txt
+    echo "compiler.c.extra_flags=-Wall -Wextra -Werror -Wdouble-promotion -Wno-ignored-qualifiers $debug_flags" > rp2040/platform.local.txt
+    echo "compiler.cpp.extra_flags=-Wall -Wextra -Werror -Wdouble-promotion -Wno-ignored-qualifiers -Wno-overloaded-virtual $debug_flags" >> rp2040/platform.local.txt
     echo -e "\n----platform.local.txt----"
     cat rp2040/platform.local.txt
     echo -e "\n----\n"