Example change

tools/Diagnostics/Diagnostics.ino

@@ -29,25 +29,6 @@
 // #define TINY_GSM_MODEM_XBEE
 // #define TINY_GSM_MODEM_SEQUANS_MONARCH
 
-// Increase RX buffer if needed
-#define TINY_GSM_RX_BUFFER 512
-
-// See all AT commands, if wanted
-#define DUMP_AT_COMMANDS
-
-// Define the serial console for debug prints, if needed
-#define TINY_GSM_DEBUG Serial
-
-// Range to attempt to autobaud
-#define GSM_AUTOBAUD_MIN 9600
-#define GSM_AUTOBAUD_MAX 115200
-
-// Add a reception delay, if needed
-#define TINY_GSM_YIELD() { delay(2); }
-
-// Uncomment this if you want to use SSL
-//#define USE_SSL
-
 // Set serial for debug console (to the Serial Monitor, default speed 115200)
 #define SerialMon Serial
 
@@ -59,6 +40,28 @@
 //#include <SoftwareSerial.h>
 //SoftwareSerial SerialAT(2, 3); // RX, TX
 
+// Increase RX buffer to capture the entire response
+// Chips without internal buffering (A6/A7, ESP8266, M590)
+// need enough space in the buffer for the entire response
+// else data will be lost (and the http library will fail).
+#define TINY_GSM_RX_BUFFER 1024
+
+// See all AT commands, if wanted
+//#define DUMP_AT_COMMANDS
+
+// Define the serial console for debug prints, if needed
+#define TINY_GSM_DEBUG SerialMon
+
+// Range to attempt to autobaud
+#define GSM_AUTOBAUD_MIN 9600
+#define GSM_AUTOBAUD_MAX 115200
+
+// Add a reception delay, if needed
+//#define TINY_GSM_YIELD() { delay(2); }
+
+// Uncomment this if you want to use SSL
+//#define USE_SSL
+
 #define TINY_GSM_USE_GPRS true
 #define TINY_GSM_USE_WIFI false