MySensors 2.1.1 release (#752)

* Bump version to 2.2.0-beta (#713)

* OTA: Add incoming FW block check (#718)

* Linux: Add support for SPIDEV (#734)

RPi and Linux refactor.

Add GPIO Sysfs for GPIO operations.

Update configure script.

Fix some cppcheck warnings.

Add serial emulation that prints to stdout.

Fix some file headers.

* Fix getControllerConfig() (#737)

* Rename MyHwATmega328 to MyHwAVR (#738)

* AVR: Restrict fast pin function use (#739)

* Fix signing presentation bug (#740)

* Consolidate open PRs for bugfix release (#741)

* Revert "Bump version to 2.2.0-beta" (#744)

* Merge Master into Dev (#745)

* Fix spi flash error when compiling in Arduino IDE 1.6.6

* Bump minor version

* Fixed "invalid suffix on literal" warning

* Fix addressing bug in _doSign bitfield

* Make sure nodes not supporting signing informs GW

A node that does not support signing, still needs to inform the
gateway about this to make sure the gateway carries a valid signing
requirement table when a node Id that was requiering signing stops
doing this.
This fixes #286.

* Prevent SecureActuator from accepting ACKs as commands

As ACKs are not currently signed, allowing ACKs as commands
is a considerable security hole for this sketch. This is now resolved.

* Backport of bugfix (#259) in repeaters when forwarding signed messages

* Bumped version to 1.5.2

* Corrected doSign variable name (was _doSign)

* Bumped version to 1.5.3

* Add NULL termination to payloads

Messages addressed to "this" node, will have a null char
appended to the payload after message verification is
done, because some "getters" assume the message being a
string.

* MySensors 2.1.1 release

core/MyOTAFirmwareUpdate.cpp

@@ -93,19 +93,26 @@ bool firmwareOTAUpdateProcess(void)
 		OTA_DEBUG(PSTR("OTA:FWP:UPDATE SKIPPED\n"));		// FW update skipped, no newer version available
 	} else if (_msg.type == ST_FIRMWARE_RESPONSE) {
 		if (_firmwareUpdateOngoing) {
-			// Save block to flash
-			setIndication(INDICATION_FW_UPDATE_RX);
-			OTA_DEBUG(PSTR("OTA:FWP:RECV B=%04X\n"), _firmwareBlock);	// received FW block
 			// extract FW block
 			replyFirmwareBlock_t *firmwareResponse = (replyFirmwareBlock_t *)_msg.data;
-			// write to flash
+
+			OTA_DEBUG(PSTR("OTA:FWP:RECV B=%04X\n"), firmwareResponse->block);	// received FW block
+			if (firmwareResponse->block != _firmwareBlock - 1) {
+				OTA_DEBUG(PSTR("!OTA:FWP:WRONG FWB\n"));	// received FW block
+				// wrong firmware block received
+				setIndication(INDICATION_FW_UPDATE_RX_ERR);
+				// no further processing required
+				return true;
+			}
+			setIndication(INDICATION_FW_UPDATE_RX);
+			// Save block to flash
 			_flash.writeBytes( ((_firmwareBlock - 1) * FIRMWARE_BLOCK_SIZE) + FIRMWARE_START_OFFSET,
 			                   firmwareResponse->data, FIRMWARE_BLOCK_SIZE);
 			// wait until flash written
 			while (_flash.busy()) {}
 			_firmwareBlock--;
 			if (!_firmwareBlock) {
-				// We're finished! Do a checksum and reboot.
+				// We're done! Do a checksum and reboot.
 				OTA_DEBUG(PSTR("OTA:FWP:FW END\n"));	// received FW block
 				_firmwareUpdateOngoing = false;
 				if (transportIsValidFirmware()) {