fix(print): Fix format specifiers

lucasssvaz · lucasssvaz · commit e44cec4b1a1d · 2025-12-22T13:25:55.000-03:00
diff --git a/libraries/AsyncUDP/examples/AsyncUDPClient/AsyncUDPClient.ino b/libraries/AsyncUDP/examples/AsyncUDPClient/AsyncUDPClient.ino
@@ -35,7 +35,7 @@ void setup() {
       Serial.write(packet.data(), packet.length());
       Serial.println();
       //reply to the client
-      packet.printf("Got %u bytes of data", packet.length());
+      packet.printf("Got %zu bytes of data", packet.length());
     });
     //Send unicast
     udp.print("Hello Server!");
diff --git a/libraries/AsyncUDP/examples/AsyncUDPMulticastServer/AsyncUDPMulticastServer.ino b/libraries/AsyncUDP/examples/AsyncUDPMulticastServer/AsyncUDPMulticastServer.ino
@@ -36,7 +36,7 @@ void setup() {
       Serial.write(packet.data(), packet.length());
       Serial.println();
       //reply to the client
-      packet.printf("Got %u bytes of data", packet.length());
+      packet.printf("Got %zu bytes of data", packet.length());
     });
     //Send multicast
     udp.print("Hello!");
diff --git a/libraries/AsyncUDP/examples/AsyncUDPServer/AsyncUDPServer.ino b/libraries/AsyncUDP/examples/AsyncUDPServer/AsyncUDPServer.ino
@@ -36,7 +36,7 @@ void setup() {
       Serial.write(packet.data(), packet.length());
       Serial.println();
       //reply to the client
-      packet.printf("Got %u bytes of data", packet.length());
+      packet.printf("Got %zu bytes of data", packet.length());
     });
   }
 }
diff --git a/libraries/BLE/examples/Beacon_Scanner/Beacon_Scanner.ino b/libraries/BLE/examples/Beacon_Scanner/Beacon_Scanner.ino
@@ -55,14 +55,14 @@ class MyAdvertisedDeviceCallbacks : public BLEAdvertisedDeviceCallbacks {
           );
         } else {
           Serial.println("Found another manufacturers beacon!");
-          Serial.printf("strManufacturerData: %d ", dataLength);
+          Serial.printf("strManufacturerData: %zu ", dataLength);
           for (int i = 0; i < dataLength; i++) {
             Serial.printf("[%X]", cManufacturerData[i]);
           }
           Serial.printf("\n");
         }
       } else {
-        Serial.printf("Manufacturer data too large (%d bytes), skipping\n", dataLength);
+        Serial.printf("Manufacturer data too large (%zu bytes), skipping\n", dataLength);
       }
     }
 
diff --git a/libraries/BluetoothSerial/examples/DiscoverConnect/DiscoverConnect.ino b/libraries/BluetoothSerial/examples/DiscoverConnect/DiscoverConnect.ino
@@ -63,7 +63,7 @@ void setup() {
         BTAdvertisedDevice *device = btDeviceList->getDevice(i);
         Serial.printf(" ----- %s  %s %d\n", device->getAddress().toString().c_str(), device->getName().c_str(), device->getRSSI());
         std::map<int, std::string> channels = SerialBT.getChannels(device->getAddress());
-        Serial.printf("scanned for services, found %d\n", channels.size());
+        Serial.printf("scanned for services, found %zu\n", channels.size());
         for (auto const &entry : channels) {
           Serial.printf("     channel %d (%s)\n", entry.first, entry.second.c_str());
         }
diff --git a/libraries/ESP32/examples/ArduinoStackSize/ArduinoStackSize.ino b/libraries/ESP32/examples/ArduinoStackSize/ArduinoStackSize.ino
@@ -21,15 +21,15 @@ SET_LOOP_TASK_STACK_SIZE(16 * 1024);  // 16KB
 void setup() {
   Serial.begin(115200);
 
-  Serial.printf("Arduino Stack was set to %d bytes", getArduinoLoopTaskStackSize());
+  Serial.printf("Arduino Stack was set to %zu bytes", getArduinoLoopTaskStackSize());
 
   // Print unused stack for the task that is running setup()
-  Serial.printf("\nSetup() - Free Stack Space: %d", uxTaskGetStackHighWaterMark(NULL));
+  Serial.printf("\nSetup() - Free Stack Space: %zu", uxTaskGetStackHighWaterMark(NULL));
 }
 
 void loop() {
   delay(1000);
 
   // Print unused stack for the task that is running loop() - the same as for setup()
-  Serial.printf("\nLoop() - Free Stack Space: %d", uxTaskGetStackHighWaterMark(NULL));
+  Serial.printf("\nLoop() - Free Stack Space: %zu", uxTaskGetStackHighWaterMark(NULL));
 }
diff --git a/libraries/ESP32/examples/DeepSleep/SmoothBlink_ULP_Code/SmoothBlink_ULP_Code.ino b/libraries/ESP32/examples/DeepSleep/SmoothBlink_ULP_Code/SmoothBlink_ULP_Code.ino
@@ -141,7 +141,7 @@ void setup() {
   Serial.begin(115200);
 
   ulp_setup();  // it really only runs on the first ESP32 boot
-  Serial.printf("\nStarted smooth blink with delay %ld\n", *fadeCycleDelay);
+  Serial.printf("\nStarted smooth blink with delay %lu\n", *fadeCycleDelay);
 
   // *fadeCycleDelay resides in RTC_SLOW_MEM and persists along deep sleep waking up
   // it is used as a delay time parameter for smooth blinking, in the ULP processing code
diff --git a/libraries/ESP32/examples/RMT/RMTLoopback/RMTLoopback.ino b/libraries/ESP32/examples/RMT/RMTLoopback/RMTLoopback.ino
@@ -94,7 +94,7 @@ void loop() {
 
   // Once data is available, the number of RMT Symbols is stored in rx_num_symbols
   // and the received data is copied to my_data
-  Serial.printf("Got %d RMT symbols\n", rx_num_symbols);
+  Serial.printf("Got %zu RMT symbols\n", rx_num_symbols);
 
   // Printout the received data plus the original values
   for (int i = 0; i < RMT_NUM_EXCHANGED_DATA; i++) {
diff --git a/libraries/ESP32/examples/Serial/OnReceiveError_BREAK_Demo/OnReceiveError_BREAK_Demo.ino b/libraries/ESP32/examples/Serial/OnReceiveError_BREAK_Demo/OnReceiveError_BREAK_Demo.ino
@@ -78,7 +78,7 @@ void onReceiveFunction() {
   // This is a callback function that will be activated on UART RX events
   size_t available = Serial1.available();
   received_bytes = received_bytes + available;
-  Serial.printf("onReceive Callback:: There are %d bytes available: {", available);
+  Serial.printf("onReceive Callback:: There are %zu bytes available: {", available);
   while (available--) {
     char c = Serial1.read();
     Serial.printf("0x%x='%c'", c, c);
@@ -126,12 +126,12 @@ void testAndReport(uint8_t fifoFull, bool break_at_the_end) {
     dataSent[i] = 'A' + i;  // fill it with characters A..Z
   }
 
-  Serial.printf("\nTesting onReceive for receiving %d bytes at %d baud, using RX FIFO Full = %d.\n", sent_bytes, BAUD, fifoFull);
+  Serial.printf("\nTesting onReceive for receiving %zu bytes at %d baud, using RX FIFO Full = %d.\n", sent_bytes, BAUD, fifoFull);
   Serial.println("onReceive is called on both FIFO Full and RX Timeout events.");
   if (break_at_the_end) {
-    Serial.printf("BREAK event will be sent at the END of the %d bytes\n", sent_bytes);
+    Serial.printf("BREAK event will be sent at the END of the %zu bytes\n", sent_bytes);
   } else {
-    Serial.printf("BREAK event will be sent at the BEGINNING of the %d bytes\n", sent_bytes);
+    Serial.printf("BREAK event will be sent at the BEGINNING of the %zu bytes\n", sent_bytes);
   }
   Serial.flush();                                  // wait Serial FIFO to be empty and then spend almost no time processing it
   Serial1.setRxFIFOFull(fifoFull);                 // testing different result based on FIFO Full setup
@@ -150,8 +150,8 @@ void testAndReport(uint8_t fifoFull, bool break_at_the_end) {
     // just wait for receiving all byte in the callback...
   }
 
-  Serial.printf("\nIt has sent %d bytes from Serial1 TX to Serial1 RX\n", sent_bytes);
-  Serial.printf("onReceive() has read a total of %d bytes\n", received_bytes);
+  Serial.printf("\nIt has sent %zu bytes from Serial1 TX to Serial1 RX\n", sent_bytes);
+  Serial.printf("onReceive() has read a total of %zu bytes\n", received_bytes);
 
   Serial1.onReceiveError(NULL);  // resets/disables the RX Error callback function for Serial 1
   Serial1.onReceive(NULL);       // resets/disables the RX callback function for Serial 1
diff --git a/libraries/ESP32/examples/Serial/OnReceive_Demo/OnReceive_Demo.ino b/libraries/ESP32/examples/Serial/OnReceive_Demo/OnReceive_Demo.ino
@@ -60,7 +60,7 @@ void onReceiveFunction(void) {
   // This is a callback function that will be activated on UART RX events
   size_t available = Serial1.available();
   received_bytes = received_bytes + available;
-  Serial.printf("onReceive Callback:: There are %d bytes available: ", available);
+  Serial.printf("onReceive Callback:: There are %zu bytes available: ", available);
   while (available--) {
     Serial.print((char)Serial1.read());
   }
@@ -106,7 +106,7 @@ void testAndReport(uint8_t fifoFull, bool onlyOnTimeOut) {
     dataSent[i] = 'A' + i;  // fill it with characters A..Z
   }
 
-  Serial.printf("\nTesting onReceive for receiving %d bytes at %d baud, using RX FIFO Full = %d.\n", sent_bytes, BAUD, fifoFull);
+  Serial.printf("\nTesting onReceive for receiving %zu bytes at %d baud, using RX FIFO Full = %d.\n", sent_bytes, BAUD, fifoFull);
   if (onlyOnTimeOut) {
     Serial.println("onReceive is called just on RX Timeout!");
   } else {
@@ -122,8 +122,8 @@ void testAndReport(uint8_t fifoFull, bool onlyOnTimeOut) {
     // just wait for receiving all byte in the callback...
   }
 
-  Serial.printf("\nIt has sent %d bytes from Serial1 TX to Serial1 RX\n", sent_bytes);
-  Serial.printf("onReceive() has read a total of %d bytes\n", received_bytes);
+  Serial.printf("\nIt has sent %zu bytes from Serial1 TX to Serial1 RX\n", sent_bytes);
+  Serial.printf("onReceive() has read a total of %zu bytes\n", received_bytes);
   Serial.println("========================\nFinished!");
 
   Serial1.onReceive(NULL);  // resets/disables the RX callback function for Serial 1
diff --git a/libraries/ESP32/examples/Serial/RxFIFOFull_Demo/RxFIFOFull_Demo.ino b/libraries/ESP32/examples/Serial/RxFIFOFull_Demo/RxFIFOFull_Demo.ino
@@ -92,7 +92,7 @@ void testAndReport(uint8_t fifoFull) {
   }
 
   uint32_t pastTime = millis() - now;  // codespell:ignore pasttime
-  Serial.printf("\nIt has sent %d bytes from Serial1 TX to Serial1 RX\n", sentBytes);
+  Serial.printf("\nIt has sent %zu bytes from Serial1 TX to Serial1 RX\n", sentBytes);
   Serial.printf("It took %lu milliseconds to read %d bytes\n", pastTime, bytesReceived);  // codespell:ignore pasttime
   Serial.printf("Per execution Serial.read() number of bytes data and time information:\n");
   for (i = 0; i < DATA_SIZE; i++) {
diff --git a/libraries/ESP32/examples/Serial/RxTimeout_Demo/RxTimeout_Demo.ino b/libraries/ESP32/examples/Serial/RxTimeout_Demo/RxTimeout_Demo.ino
@@ -101,7 +101,7 @@ void testAndReport(uint8_t rxTimeout) {
   }
 
   uint32_t pastTime = millis() - now;  // codespell:ignore pasttime
-  Serial.printf("\nIt has sent %d bytes from Serial1 TX to Serial1 RX\n", sentBytes);
+  Serial.printf("\nIt has sent %zu bytes from Serial1 TX to Serial1 RX\n", sentBytes);
   Serial.printf("It took %lu milliseconds to read %d bytes\n", pastTime, bytesReceived);  // codespell:ignore pasttime
   Serial.print("Received data: [");
   Serial.write(dataReceived, DATA_SIZE);
diff --git a/libraries/ESP32/examples/Serial/Serial_STD_Func_OnReceive/Serial_STD_Func_OnReceive.ino b/libraries/ESP32/examples/Serial/Serial_STD_Func_OnReceive/Serial_STD_Func_OnReceive.ino
@@ -112,7 +112,7 @@ void loop() {
 
 #if TEST_UART > 0
   Serial.println("\n\n==================================");
-  Serial.printf("Sending %d bytes to UART%d...\n", len, TEST_UART);
+  Serial.printf("Sending %zu bytes to UART%d...\n", len, TEST_UART);
   testingSerial.write(serial_data, len);
 #else
   // when UART0 is used for testing, it is necessary to send data using the Serial Monitor/Terminal
diff --git a/libraries/FFat/examples/FFat_Test/FFat_Test.ino b/libraries/FFat/examples/FFat_Test/FFat_Test.ino
@@ -152,7 +152,7 @@ void testFileIO(fs::FS &fs, const char *path) {
     }
     Serial.println("");
     end = millis() - start;
-    Serial.printf("- %u bytes read in %lu ms\r\n", flen, end);
+    Serial.printf("- %zu bytes read in %lu ms\r\n", flen, end);
     file.close();
   } else {
     Serial.println("- failed to open file for reading");
@@ -170,8 +170,8 @@ void setup() {
     return;
   }
 
-  Serial.printf("Total space: %10u\n", FFat.totalBytes());
-  Serial.printf("Free space: %10u\n", FFat.freeBytes());
+  Serial.printf("Total space: %10zu\n", FFat.totalBytes());
+  Serial.printf("Free space: %10zu\n", FFat.freeBytes());
   listDir(FFat, "/", 0);
   writeFile(FFat, "/hello.txt", "Hello ");
   appendFile(FFat, "/hello.txt", "World!\r\n");
@@ -180,7 +180,7 @@ void setup() {
   readFile(FFat, "/foo.txt");
   deleteFile(FFat, "/foo.txt");
   testFileIO(FFat, "/test.txt");
-  Serial.printf("Free space: %10u\n", FFat.freeBytes());
+  Serial.printf("Free space: %10zu\n", FFat.freeBytes());
   deleteFile(FFat, "/test.txt");
   Serial.println("Test complete");
 }
diff --git a/libraries/HTTPUpdateServer/src/HTTPUpdateServer.h b/libraries/HTTPUpdateServer/src/HTTPUpdateServer.h
@@ -143,7 +143,7 @@ class HTTPUpdateServer {
         } else if (_authenticated && upload.status == UPLOAD_FILE_END && !_updaterError.length()) {
           if (Update.end(true)) {  //true to set the size to the current progress
             if (_serial_output) {
-              Serial.printf("Update Success: %u\nRebooting...\n", upload.totalSize);
+              Serial.printf("Update Success: %zu\nRebooting...\n", upload.totalSize);
             }
           } else {
             _setUpdaterError();
diff --git a/libraries/LittleFS/examples/LITTLEFS_test/LITTLEFS_test.ino b/libraries/LittleFS/examples/LITTLEFS_test/LITTLEFS_test.ino
@@ -233,7 +233,7 @@ void testFileIO(fs::FS &fs, const char *path) {
     }
     Serial.println("");
     end = millis() - start;
-    Serial.printf("- %u bytes read in %lu ms\r\n", flen, end);
+    Serial.printf("- %zu bytes read in %lu ms\r\n", flen, end);
     file.close();
   } else {
     Serial.println("- failed to open file for reading");
diff --git a/libraries/SD/examples/SD_Test/SD_Test.ino b/libraries/SD/examples/SD_Test/SD_Test.ino
@@ -185,7 +185,7 @@ void testFileIO(fs::FS &fs, const char *path) {
       len -= toRead;
     }
     end = millis() - start;
-    Serial.printf("%u bytes read for %lu ms\n", flen, end);
+    Serial.printf("%zu bytes read for %lu ms\n", flen, end);
     file.close();
   } else {
     Serial.println("Failed to open file for reading");
diff --git a/libraries/SD_MMC/examples/SDMMC_Test/SDMMC_Test.ino b/libraries/SD_MMC/examples/SDMMC_Test/SDMMC_Test.ino
@@ -189,7 +189,7 @@ void testFileIO(fs::FS &fs, const char *path) {
       len -= toRead;
     }
     end = millis() - start;
-    Serial.printf("%u bytes read for %lu ms\n", flen, end);
+    Serial.printf("%zu bytes read for %lu ms\n", flen, end);
     file.close();
   } else {
     Serial.println("Failed to open file for reading");
diff --git a/libraries/SPIFFS/examples/SPIFFS_Test/SPIFFS_Test.ino b/libraries/SPIFFS/examples/SPIFFS_Test/SPIFFS_Test.ino
@@ -150,7 +150,7 @@ void testFileIO(fs::FS &fs, const char *path) {
     }
     Serial.println("");
     end = millis() - start;
-    Serial.printf("- %u bytes read in %lu ms\r\n", flen, end);
+    Serial.printf("- %zu bytes read in %lu ms\r\n", flen, end);
     file.close();
   } else {
     Serial.println("- failed to open file for reading");
diff --git a/libraries/Update/examples/HTTP_Client_AES_OTA_Update/HTTP_Client_AES_OTA_Update.ino b/libraries/Update/examples/HTTP_Client_AES_OTA_Update/HTTP_Client_AES_OTA_Update.ino
@@ -136,7 +136,7 @@ void printProgress(size_t progress, const size_t &size) {
     progress = (progress * 100) / size;
     progress = (progress > 100 ? 100 : progress);  //0-100
     if (progress != last_progress) {
-      Serial.printf("Progress: %d%%\n", progress);
+      Serial.printf("Progress: %zu%%\n", progress);
       last_progress = progress;
     }
   }
diff --git a/libraries/Update/examples/HTTP_Server_AES_OTA_Update/HTTP_Server_AES_OTA_Update.ino b/libraries/Update/examples/HTTP_Server_AES_OTA_Update/HTTP_Server_AES_OTA_Update.ino
@@ -104,7 +104,7 @@ void printProgress(size_t progress, size_t size) {
     progress = (progress * 100) / size;
     progress = (progress > 100 ? 100 : progress);  //0-100
     if (progress != last_progress) {
-      Serial.printf("\nProgress: %d%%", progress);
+      Serial.printf("\nProgress: %zu%%", progress);
       last_progress = progress;
     }
   }
@@ -167,7 +167,7 @@ void setupHttpUpdateServer() {
         }
       } else if (upload.status == UPLOAD_FILE_END) {
         if (Update.end(true)) {  //true to set the size to the current progress
-          Serial.printf("Update Success: %u\nRebooting...\n", upload.totalSize);
+          Serial.printf("Update Success: %zu\nRebooting...\n", upload.totalSize);
         } else {
           Update.printError(Serial);
         }
diff --git a/libraries/Update/examples/OTAWebUpdater/OTAWebUpdater.ino b/libraries/Update/examples/OTAWebUpdater/OTAWebUpdater.ino
@@ -83,7 +83,7 @@ void handleUpdate() {
       return;
     }
 
-    Serial.printf("Receiving Update: %s, Size: %d\n", upload.filename.c_str(), fsize);
+    Serial.printf("Receiving Update: %s, Size: %zu\n", upload.filename.c_str(), fsize);
     if (!Update.begin(fsize)) {
       otaDone = 0;
       Update.printError(Serial);
@@ -96,7 +96,7 @@ void handleUpdate() {
     }
   } else if (authenticated && upload.status == UPLOAD_FILE_END) {
     if (Update.end(true)) {
-      Serial.printf("Update Success: %u bytes\nRebooting...\n", upload.totalSize);
+      Serial.printf("Update Success: %zu bytes\nRebooting...\n", upload.totalSize);
     } else {
       Serial.printf("%s\n", Update.errorString());
       otaDone = 0;
diff --git a/libraries/Update/examples/Signed_OTA_Update/Signed_OTA_Update.ino b/libraries/Update/examples/Signed_OTA_Update/Signed_OTA_Update.ino
@@ -91,8 +91,8 @@ void performOTAUpdate() {
   const size_t signatureSize = 512;
   size_t firmwareSize = contentLength - signatureSize;
 
-  Serial.printf("Actual firmware size: %d bytes\n", firmwareSize);
-  Serial.printf("Signature size: %d bytes\n", signatureSize);
+  Serial.printf("Actual firmware size: %zu bytes\n", firmwareSize);
+  Serial.printf("Signature size: %zu bytes\n", signatureSize);
 
   // Select hash algorithm
 #ifdef USE_SHA256
@@ -170,7 +170,7 @@ void performOTAUpdate() {
     delay(1);
   }
 
-  Serial.printf("Written: %d bytes\n", written);
+  Serial.printf("Written: %zu bytes\n", written);
 
   // End the update - this will verify the signature
   if (Update.end()) {
diff --git a/libraries/WebServer/examples/WebUpdate/WebUpdate.ino b/libraries/WebServer/examples/WebUpdate/WebUpdate.ino
@@ -82,7 +82,7 @@ void setup(void) {
           }
         } else if (authenticated && upload.status == UPLOAD_FILE_END) {
           if (Update.end(true)) {  //true to set the size to the current progress
-            Serial.printf("Update Success: %u\nRebooting...\n", upload.totalSize);
+            Serial.printf("Update Success: %zu\nRebooting...\n", upload.totalSize);
           } else {
             Update.printError(Serial);
           }

Original file line number	Diff line number	Diff line change
`@@ -36,7 +36,7 @@ void setup() {`
`36`	`36`	`Serial.write(packet.data(), packet.length());`
`37`	`37`	`Serial.println();`
`38`	`38`	`//reply to the client`
`39`		`- packet.printf("Got %u bytes of data", packet.length());`
	`39`	`+ packet.printf("Got %zu bytes of data", packet.length());`
`40`	`40`	`});`
`41`	`41`	`}`
`42`	`42`	`}`
Original file line number	Diff line number	Diff line change
`@@ -55,14 +55,14 @@ class MyAdvertisedDeviceCallbacks : public BLEAdvertisedDeviceCallbacks {`
`55`	`55`	`);`
`56`	`56`	`} else {`
`57`	`57`	`Serial.println("Found another manufacturers beacon!");`
`58`		`- Serial.printf("strManufacturerData: %d ", dataLength);`
	`58`	`+ Serial.printf("strManufacturerData: %zu ", dataLength);`
`59`	`59`	`for (int i = 0; i < dataLength; i++) {`
`60`	`60`	`Serial.printf("[%X]", cManufacturerData[i]);`
`61`	`61`	`}`
`62`	`62`	`Serial.printf("\n");`
`63`	`63`	`}`
`64`	`64`	`} else {`
`65`		`- Serial.printf("Manufacturer data too large (%d bytes), skipping\n", dataLength);`
	`65`	`+ Serial.printf("Manufacturer data too large (%zu bytes), skipping\n", dataLength);`
`66`	`66`	`}`
`67`	`67`	`}`
`68`	`68`
Original file line number	Diff line number	Diff line change
`@@ -63,7 +63,7 @@ void setup() {`
`63`	`63`	`BTAdvertisedDevice *device = btDeviceList->getDevice(i);`
`64`	`64`	`Serial.printf(" ----- %s %s %d\n", device->getAddress().toString().c_str(), device->getName().c_str(), device->getRSSI());`
`65`	`65`	`std::map<int, std::string> channels = SerialBT.getChannels(device->getAddress());`
`66`		`- Serial.printf("scanned for services, found %d\n", channels.size());`
	`66`	`+ Serial.printf("scanned for services, found %zu\n", channels.size());`
`67`	`67`	`for (auto const &entry : channels) {`
`68`	`68`	`Serial.printf(" channel %d (%s)\n", entry.first, entry.second.c_str());`
`69`	`69`	`}`