0.7.0-rc.1 Prerelease (Core/Photon/P1/Electron)

Firmware 0.7.0-rc.1 Pre-release is out on the Web IDE for Core/Photon/P1/Electron

released on production servers June 29th, 2017

📝 Please read all notes in the Notes Festival 🎉 below

Note: There are 2 known issues with 0.7.0-rc.1 where when using SYSTEM_THREAD(ENABLE) that are already fixed and will be released in 0.7.0-rc.2. See details here to see if it will affect you.

Note: This is a pre-release and is not intended for production yet. We've tested this pre-release to the best of our ability and we want to know what you think now! Please understand that some care and attention is necessary when testing this pre-release, and be sure to upgrade to the final release when it's available. It will not be available by default. To use you must select the version dropdown from the devices drawer. Downgrading back to the current release info is at the bottom of this post.

Note: You must update your Electron to v0.5.3 first before attempting to use OTA or YModem transfer to update to >= v0.6.0. If you use DFU over USB, you can update to >= v0.6.0 directly, but make sure you have installed >= v1.21.0 of the CLI first.

Note about Downgrading [Photon/P1] OTA or YModem transfer: First downgrade system-part2 back to 0.6.2. Any attempts to write to the DCT while the device is in DFU mode will fail now. At this point, attempting to downgrade system-part1 will fail silently, since the new bootloader (v100) cannot access DCT and read module update info, thus, in order to downgrade from 0.7.0-rc.1 to 0.6.2, photon/p1 firmware modules should be flashed in the following order with 0.6.2 system binaries: system-part2 -> bootloader (v11) -> system-part1.

Note about Downgrading [Electron] OTA or YModem transfer: Downgrade in normal order with 0.6.2 system binaries: system-part3 -> system-part2 -> system-part1 -> bootloader (v0.6.2).

✏️ 0.6.2 bootloader binaries have been added to this release below (on github) for convenience.

✏️ You can only flash the bootloader OTA or YModem over USB. DFU mode over USB will fail because it uses the bootloader itself for that mode of operation.
YModem e.g. particle flash --serial bootloader-0.6.2-photon.bin

0.7.0-rc.1 Changelog

FEATURES

• [PR #1245] Particle.publish() now able to use Future API
• [PR #1289] [Implements #914] [Photon/P1] WPA/WPA2 Enterprise support added (PEAP/MSCHAPv2 and EAP-TLS)! [Photon/P1] Automatic cipher/security detection when configuring WiFi settings over Serial.

ENHANCEMENTS

• [PR #1242] [Photon/P1/Electron] DFU transfer speeds increased! v100 bootloader is now 41% faster than v7 and 60% faster than the latest v11.
• [PR #1236] [Fixes #1201] [Fixes #1194] Added type-safe wrapper for enum-based flags for Particle.publish() which enables logical OR'ed flag combinations PRIVATE | WITH_ACK
• [PR #1247] Adds error checking to WiFi.setCredentials(), will return true if credentials has been stored successfully, or false otherwise.
• [PR #1248] Added an overload to map() function that takes double arguments.
• [PR #1296] [Photon/P1] Added support for setting a custom DNS hostname, default is device ID.
• [PR #1260] [Implements #1067] Adds ability to interrupt the blinking cyan cloud connection with the SETUP/MODE button.
• [PR #1271] [Implements #1180] [Photon/P1] Constrains WiFi.RSSI() to -1dBm max.
• [PR #1270] Removes spark/device/ota_result event and instead sends OTA'd module info as a payload in UpdateDone message, or as an ACK to UpdateDone.
• [PR #1300] Restores public server key and server address if missing
• [PR #1325] Use backup registers instead of DCT to store system flags to avoid chance of a DCT corruption.
• [PR #1306] Bootloader module dependency and integrity checks have been added to system-part2. If they fail, the device is forced into safe mode and a new bootloader will be OTA transferred to the device.
• [PR #1329] Adds a verification and retry scheme to the bootloader flashing routine.
• [PR #1330] [Electron] Added CRC checking to the Electron DCD implementation so that write errors are detected. Added a critical section around flash operations and around DCD operations to make them thread safe.
• [PR #1307] [Photon/P1] New version of WICED adds CRC checking to the DCT implementation so that write errors are detected. Added a critical section around flash operations and around DCT operations to make them thread safe.
• [PR #1269] [Closes #1165] Cloud connection can be closed gracefully allowing confirmable messages to reach the cloud before the connection is terminated

BUGFIX

• [PR #1246] Fixes possible corruption of event data in multi-threaded firmware
• [PR #1234] [Fixes #1139] [Electron] spark/hardware/max_binary event was sent in error, adding 69 more bytes of data to handshake (full or session resume). Also fixes other preprocessor errors.
• [PR #1236] [Fixes #1201] [Fixes #1194] Sanitized Particle.publish() overloads.
• [PR #1237] Fixes potential memory leak and race condition issues in RGB.onChange() function.
• [PR #1247] Previously no null pointer checks on password argument of WiFi.setCredentials().
• [PR #1248] [Fixes #1193] Fixes divide by zero on incorrect parameters of map() function.
• [PR #1254] [Fixes #1241] WiFi.connecting() was returning false while DHCP is resolving, will now remain true.
• [PR #1296] [Fixes #1251] [Photon/P1] Default Wi-Fi DNS hostname changed to device ID, to avoid spaces in name which may cause issues.
• [PR #1255] [Fixes #1136] [Core] Interrupts were disabled by default.
• [PR #1259] [Fixes #1176] Makes System.sleep(mode, seconds) a synchronous operation in multithreaded firmware. This ensures the device is in a well-defined state before entering sleep mode.
• [PR #1315] Fixes Particle Publish flag implicit conversion issue. e.g. Particle.publish("event", "data", NO_ACK); was previously changing event's TTL instead disabling acknowledgement of the event)
• [PR #1316] Fixes LED indication when network credentials are cleared by holding the SETUP button for >10 seconds.
• [PR #1270] [Fixes #1240] TCP Firmware will not ACK every chunk in Fast OTA mode now.
• [PR #1302] [Fixes #1282] [Electron] Wire1 was not working correctly.
• [PR #1326] Renamed system_error enum to system_error_t to avoid conflicts with std::system_error class.
• [PR #1286] Improves stability of TCP server implementation: 1) Update server's list of clients on a client destruction (thanks @tlangmo!), 2) TCPClient now closes underlying socket on destruction.
• [PR #1327] [Fixes #1098] [Photon/P1] Previously, when entering Sleep-stop mode: System.sleep(D1, RISING, 60); while in the process of making a Wi-Fi connection resulted in some parts of the radio still being initialized, consuming about 10-15mA more than normal.
• [PR #1336] Fixes an issue with Serial when receiving consecutive multiple 64-byte transmissions from Host
• [PR #1337] Fixed system attempting to enter listening mode every 1ms when the SETUP ...

0.6.2 Release (Core/Photon/P1/Electron)

Firmware 0.6.2 release is out on the Web IDE for Core/Photon/P1/Electron

released on production servers May 3rd, 2017

Note: This is a Release and may be used for production. Any known issues are likely slated for 0.7.0-rc.1 (check Github issues). It is available by default for all devices. To use, select the 0.6.2 version dropdown from the devices drawer.

Note: If you have previously last used one of the prerelease versions of 0.6.2 on a Core/Photon/P1 device, please re-flash it with 0.6.2. You must upgrade (locally preferred) the Electron system firmware to 0.6.2 first before you can OTA new user apps.

Note: You must update your Electron to (v0.5.3, v0.5.3-rc.2, or v0.5.3-rc.3) first before attempting to use OTA or YModem transfer to update to v0.6.0. If you use DFU over USB, you can update to v0.6.2 directly, but make sure you have installed v1.22.0 of the CLI first.

Note: As a Product in the Console, when flashing a >= 0.6.0 user app, Electrons can now Safe Mode Heal from < 0.5.3 to >= 0.6.0 firmware. This will consume about 500KB of data as it has to transfer two 0.5.3 system parts and three >= 0.6.0 system parts. Devices will not automatically update system firmware if not added as a Product in Console.

0.6.2 Changelog

FEATURES

• [PR #1311] [Implements CH1537] [Electron] Added support for Twilio SIMs by default in system firmware.

ENHANCEMENT / BUG FIX

• [PR #1283] [Implements #1278] Restores 0.6.0-style Arduino compatibility by default, full Arduino compatibility when including Arduino.h

BUG FIX

• [PR #1310] Fixes a error when <algorithm> has already been included before the math.h header. Now we only include math.h when Arduino compatibility is requested. (math.h was not included in 0.6.0).

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System Binaries (all devices) & Device Upgrader (Photon & Electron)

located below

---

Programming and Debugging

You can view specific programming and debugging notes for this version of firmware here.

0.6.2-rc.2 Prerelease (Core/Photon/P1/Electron)

Firmware 0.6.2-rc.2 Pre-release is out on the Web IDE for Core/Photon/P1/Electron

released on production servers April 27, 2017

Note: This is a pre-release and is not intended for production yet. We've tested this pre-release to the best of our ability and we want to know what you think now! Please understand that some care and attention is necessary when testing this pre-release, and be sure to upgrade to the final release when it's available. It will not be available by default. To use you must select the version dropdown from the devices drawer. Downgrading back to the current release info is at the bottom of this post.

Note: You must update your Electron to v0.5.3 first before attempting to use OTA or YModem transfer to update to >= v0.6.0. If you use DFU over USB, you can update to >= v0.6.0 directly, but make sure you have installed v1.21.0 of the CLI first.

0.6.2-rc.2 Changelog

FEATURES

• [PR #1311] [Implements CH1537] [Electron] Added support for Twilio SIMs by default in system firmware.

BUG FIX

• [PR #1310] Fixes a error when <algorithm> has already been included before the math.h header. Now we only include math.h when Arduino compatibility is requested. (math.h was not included in 0.6.0).

---

System Binaries (all devices) & Device Upgrader (Photon & Electron)

located below

---

Programming and Debugging

You can view specific programming and debugging notes for this version of firmware here.

0.6.2-rc.1 Prerelease (Core/Photon/P1/Electron)

Firmware 0.6.2-rc.1 Pre-release is out on the Web IDE for Core/Photon/P1/Electron

released on production servers April 5, 2017

Note: This is a pre-release and is not intended for production yet. We've tested this pre-release to the best of our ability and we want to know what you think now! Please understand that some care and attention is necessary when testing this pre-release, and be sure to upgrade to the final release when it's available. It will not be available by default. To use you must select the version dropdown from the devices drawer. Downgrading back to the current release info is at the bottom of this post.

Note: You must update your Electron to v0.5.3 first before attempting to use OTA or YModem transfer to update to >= v0.6.0. If you use DFU over USB, you can update to >= v0.6.0 directly, but make sure you have installed v1.21.0 of the CLI first.

0.6.2-rc.1 Changelog

ENHANCEMENT / BUG FIX

• [PR #1283] [Implements #1278] Restores 0.6.0-style Arduino compatibility by default, full Arduino compatibility when including Arduino.h

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System Binaries (all devices) & Device Upgrader (Photon & Electron)

located below

---

Programming and Debugging

You can view specific programming and debugging notes for this version of firmware here.

0.6.1 Release (Core/Photon/P1/Electron)

Firmware 0.6.1 release is out on the Web IDE for Core/Photon/P1/Electron

released on production servers March 1, 2017

⚠️ Please Note: The bootloader on Electron/Photon/P1 will update to v11 automatically with this update. Make sure your device is connected to a stable power source and do not remove power until after the device reboots and is running. It happens so quickly right after the device resets and boots that you won't notice any special RGB LED signaling for this.

Note: This is a Release and may be used for production. Any known issues are likely slated for 0.7.0-rc.1 (check Github issues). It is available by default for all devices. To use, select the 0.6.1 version dropdown from the devices drawer.

Note: If you have previously last used one of the prerelease versions of 0.6.1 on a Core/Photon/P1 device, please re-flash it with 0.6.1. You must upgrade (locally preferred) the Electron system firmware to 0.6.1 first before you can OTA new user apps.

Note: You must update your Electron to (v0.5.3, v0.5.3-rc.2, or v0.5.3-rc.3) first before attempting to use OTA or YModem transfer to update to v0.6.0. If you use DFU over USB, you can update to v0.6.1 directly, but make sure you have installed v1.20.1 of the CLI first.

Note: As a Product in the Console, when flashing a >= 0.6.0 user app, Electrons can now Safe Mode Heal from < 0.5.3 to >= 0.6.0 firmware. This will consume about 500KB of data as it has to transfer two 0.5.3 system parts and three >= 0.6.0 system parts. Devices will not automatically update system firmware if not added as a Product in Console.

0.6.1 Changelog (same as v0.6.1-rc.2)

FEATURES

• [PR #1190] [Implements #1114] [Docs] Added ability to mirror MODE/SETUP button to any GPIO, available from time of boot, active high or low.
• [PR #1182] [Fixes #687] [Docs] Added WiFi.set|getListenTimeout() | Cellular.set|getListenTimeout() to override the automatic new Listening Mode timeout (Wi-Fi = no timeout by default, Cellular = 5 minute timeout by default).
• [PR #1154] [Docs] Added low_battery system event, which is generated when low battery condition is detected. This is when the battery falls below the SoC threshold (default 10%, max settable 32%). The event can only be generated again if the system goes from a non-charging to charing state after the event is generated. The event doesn't carry any data.
• [PR #1144] [Docs] Added tracking of ACKs for published events (see WITH_ACK flag for Particle.publish())
• [PR #1135] [Fixes #1116] [Fixes #965] [Docs] New Time API's! Time.isValid() | Particle.syncTimePending() | Particle.syncTimeDone() | Particle.timeSyncedLast()
• [PR #1127] [PR #1213] Added support for runtime logging configuration, which allows to enable logging on already running system via USB control requests. Disabled by default to save flash memory space. (note: this feature is not fully baked with tool support)
• [PR #1120] [Implements #1059] [P1] [Docs] [Pinout] Added extra spare pin to P1 (P1S6) with GPIO and PWM support.
• [PR #1204] [Implements #1113] [Docs] RGB LED pins can be mirrored to other PWM capable pins via RGB.mirrorTo(). Common Anode/Cathode LED and Bootloader compatible. See PR for usage.
• [PR #1205] [Closes #569] [Closes #976] [Closes #1111] [Docs] By implementing a centralized LED service and theme "engine" for system LED signaling, giving users the ability to apply custom LED colors and patterns for system events.
• [PR #1225] [Photon/P1/Electron] [Docs] Added support for custom LED colors in bootloader v11 (Safe Mode, DFU Mode, Firmware Reset).
• [PR #1227] [Implements #961] [Electron] [Docs] Added new API for hostname IP address lookup IPAddress ip = Cellular.resolve(hostname)

ENHANCEMENTS

• [PR #1191] Added more Arduino Library compatibility
• [PR #1188] [Implements #1152] [Docs] Added SPI API's: SPISettings | SPI.beginTransaction() | SPI.endTransaction()
• [PR #1169] Updated system communication logging with new logging API
• [PR #1160] [Electron] Modem USART paused via HW_FLOW_CONTROL (RTS) before going into sleep with SLEEP_NETWORK_STANDBY. Receives and buffers small messages while system sleeping.
• [PR #1159] [Closes #1085] [Closes #1054] Added support for GCC 5.4.x
• [PR #1151] [Closes #977] [Docs] Added System events for cloud/network connection state changes
• [PR #1122] Attach to host even if Serial, USBSerial1 and Keyboard/Mouse are disabled, so that "Control Interface" that receives vendor requests is still accessible.
• [PR #1097] [Implements #1032] When flashing (OTA/YModem) an invalid firmware binary (that the device ignores) it will post an event describing why the binary was not applied.
• [PR #1203] [PR #1212] Automatic bootloader updates have returned to the Electron. v9 bootloader has been added to firmware release >=0.6.1-rc.1 for Photon/P1/Electron. After updating your system firmware, a new v9 bootloader will be applied to your device if required. v9 includes support for SETUP/MODE button and RGB LED mirroring at the bootloader level of operation. Also included are updates to USB DFU mode so that Windows users do not need to install separate drivers via Zadig. Bootloader GREEN and WHITE LED flashing speeds (Firmware Reset modes) are faster now as well (you won't see these unless you have loaded user firmware to the Backup location). Note: this release 0.6.1 includes all of these changes as v11 which fixed some bugs in v9.
• [PR #1125] Breaks on-going network connection when Sleep stop mode is called, thereby speeding up the time to entering sleep when using SYSTEM_THREAD(ENABLED).
• [PR #1216] Improved Arduino Compatibility (now supported by default, added PARTICLE_NO_ARDUINO_COMPATIBILITY=y command line option for disabling)
• [PR #1217] [Docs] Added Windows, Mac command, & Unix/Linux meta USB keyboard scancode definitions.
• [PR #1224] Allow the compiler to garbage collect USBKeyboard and USBMouse implementations if they are not used in user code, saving flash space.
• [PR #1225] [Photon/P1/Electron] Combined LEDStatus and LEDCustomStatus into a single class -> LEDStatus

BUG FIXES

• [PR #1186] Fixed issue where USB Serial might deadlock when interrupts are disabled while using DEBUG_BUILD=y
• [PR #1179] [Fixes #1178] [Fixes #1060] [Electron] Bootloader build was failing, fixed and added to CI.
• [PR #1158] [Fixes #1133] [Electron] Before sleeping, now waits for server sent confirmable messages ...

0.6.1-rc.2 Pre-release (Core/Photon/P1/Electron)

Firmware 0.6.1-rc.2 Pre-release is out on the Web IDE for Core/Photon/P1/Electron

released on production servers January 23, 2017

⚠️ Please Note: The bootloader on Electron/Photon/P1 will update to v11 automatically with this update. Make sure your device is connected to a stable power source and do not remove power until after the device reboots and is running. It happens so quickly right after the device resets and boots that you won't notice any special RGB LED signaling for this.

---

Note: This is a pre-release and is not intended for production yet. We've tested this pre-release to the best of our ability and we want to know what you think now! Please understand that some care and attention is necessary when testing this pre-release, and be sure to upgrade to the final release when it's available. It will not be available by default. To use you must select the version dropdown from the devices drawer. Downgrading back to the current release info is at the bottom of this post.

Note: You must update your Electron to v0.5.3 first before attempting to use OTA or YModem transfer to update to >= v0.6.0. If you use DFU over USB, you can update to >= v0.6.0 directly, but make sure you have installed v1.18.0 of the CLI first.

0.6.1-rc.2 Changelog

FEATURES

• [PR #1225] [Photon/P1/Electron] Added support for custom LED colors in bootloader v11 (Safe Mode, DFU Mode, Firmware Reset).
• [PR #1227] [Implements #961] [Electron] Added new API for hostname IP address lookup IPAddress ip = Cellular.resolve(hostname)

ENHANCEMENTS

• [PR #1216] Improved Arduino Compatibility (now supported by default, added PARTICLE_NO_ARDUINO_COMPATIBILITY=y command line option for disabling)
• [PR #1217] Added Windows, Mac command, & Unix/Linux meta USB keyboard scancode definitions.
• [PR #1224] Allow the compiler to garbage collect USBKeyboard and USBMouse implementations if they are not used in user code, saving flash space.
• [PR #1225] [Photon/P1/Electron] Combined LEDStatus and LEDCustomStatus into a single class -> LEDStatus

BUG FIXES

• [PR #1221] [Fixes #1220] [Electron] TIM8 PWM pins (B0, B1) did not work correctly in bootloader with RGB.mirrorTo()
• [PR #1222] Fixed bug in String(const char* str, int len) constructor when the string is longer than the specified length.
• [PR #1225] [Photon/P1/Electron] Fixed LED indication shown during device key generation (blinking white) introduced in 0.6.1-rc.1
• [PR #1226] [Fixes #1181] [Photon/P1/Core] Process TCP DESCRIBE properly and return only one response, SYSTEM, APPLICATION, or COMBINED (ALL) describe message. Was sending separate SYSTEM and APPLICATION previously.
• [PR #1230] Safe Mode event was being published unconditionally introduced in 0.6.1-rc.1
• [PR #1231] [Electron] fixes double newline parser issue on G350 introduced in 428835a 0.6.1-rc.1

---

System Binaries (all devices) & Device Upgrader (Photon & Electron)

located below

---

Programming and Debugging

You can view specific programming and debugging notes for this version of firmware here.

0.6.1-rc.1 Pre-release (Core/Photon/P1/Electron)

Firmware 0.6.1-rc.1 Pre-release is out on the Web IDE for Core/Photon/P1/Electron

Note: This is a pre-release and is not intended for production yet. We've tested this pre-release to the best of our ability and we want to know what you think now! Please understand that some care and attention is necessary when testing this pre-release, and be sure to upgrade to the final release when it's available. It will not be available by default. To use you must select the version dropdown from the devices drawer. Downgrading back to the current release info is at the bottom of this post.

Note: You must update your Electron to v0.5.3 first before attempting to use OTA or YModem transfer to update to >= v0.6.0. If you use DFU over USB, you can update to >= v0.6.0 directly, but make sure you have installed v1.18.0 of the CLI first.

0.6.1-rc.1 Changelog

FEATURES

• [PR #1190] [Implements #1114] Added ability to mirror MODE/SETUP button to any GPIO, available from time of boot, active high or low.
• [PR #1182] [Fixes #687] [Docs] Added WiFi.set|getListenTimeout() | Cellular.set|getListenTimeout() to override the automatic new Listening Mode timeout (Wi-Fi = no timeout by default, Cellular = 5 minute timeout by default).
• [PR #1154] Added low_battery system event, which is generated when low battery condition is detected. This is when the battery falls below the SoC threshold (default 10%, max settable 32%). The event can only be generated again if the system goes from a non-charging to charing state after the event is generated. The event doesn't carry any data.
• [PR #1144] Added tracking of ACKs for published events (see WITH_ACK flag for Particle.publish())
• [PR #1135] [Fixes #1116] [Fixes #965] New Time API's! Time.isValid() | Particle.syncTimePending() | Particle.syncTimeDone() | Particle.timeSyncedLast()
• [PR #1127] [PR #1213] Added support for runtime logging configuration, which allows to enable logging on already running system via USB control requests. Disabled by default to save flash memory space. (note: this feature is not fully baked with tool support)
• [PR #1120] Implements #1059 [P1] Added extra spare pin to P1 (P1S6) with GPIO and PWM support.
• [PR #1204] [Implements #1113] RGB LED pins can be mirrored to other PWM capable pins via RGB.mirrorTo(). Common Anode/Cathode LED and Bootloader compatible. See PR for usage.
• [PR #1205] [Closes #569] [Closes #976] [Closes #1111] By implementing a centralized LED service and theme "engine" for system LED signaling, giving users the ability to apply custom LED colors and patterns for system events.

ENHANCEMENTS

• [PR #1191] Added more Arduino Library compatibility
• [PR #1188] [Implements #1152] Added SPI API's: SPISettings | SPI.beginTransaction() | SPI.endTransaction()
• [PR #1169] Updated system communication logging with new logging API
• [PR #1160] [Electron] Modem USART paused via HW_FLOW_CONTROL (RTS) before going into sleep with SLEEP_NETWORK_STANDBY. Receives and buffers small messages while system sleeping.
• [PR #1159] [Closes #1085] [Closes #1054] Added support for GCC 5.4.x
• [PR #1151] [Closes #977] Added System events for cloud/network connection state changes
• [PR #1122] Attach to host even if Serial, USBSerial1 and Keyboard/Mouse are disabled, so that "Control Interface" that receives vendor requests is still accessible.
• [PR #1097] [Implements #1032] When flashing (OTA/YModem) an invalid firmware binary (that the device ignores) it will post an event describing why the binary was not applied.
• [PR #1203] [PR #1212] Automatic bootloader updates have returned to the Electron. v9 bootloader has been added to firmware release >=0.6.1-rc.1 for Photon/P1/Electron. After updating your system firmware, a new v9 bootloader will be applied to your device if required. v9 includes support for SETUP/MODE button and RGB LED mirroring at the bootloader level of operation. Also included are updates to USB DFU mode so that Windows users do not need to install separate drivers via Zadig. Bootloader GREEN and WHITE LED flashing speeds (Firmware Reset modes) are faster now as well (you won't see these unless you have loaded user firmware to the Backup location).
• [PR #1125] Breaks on-going network connection when Sleep stop mode is called, thereby speeding up the time to entering sleep when using SYSTEM_THREAD(ENABLED).

BUGFIX

• [PR #1186] Fixed issue where USB Serial might deadlock when interrupts are disabled while using DEBUG_BUILD=y
• [PR #1179] [Fixes #1178] [Fixes #1060] [Electron] Bootloader build was failing, fixed and added to CI.
• [PR #1158] [Fixes #1133] [Electron] Before sleeping, now waits for server sent confirmable messages to be acknowledged, in addition to previous behavior of device generated confirmable messages being acknowledged. Reduces data usage.
• [PR #1156] [Fixes #1155] System.sleep(30) wasn't reapplying power to the network device after set time.
• [PR #1147] [Electron] Fixed approx. -0.1V offset on FuelGauge().getVCell() readings
• [PR #1145] [Fixes #973] Particle.connect() now blocks loop() from running until Particle.connected() is true in single threaded SEMI_AUTOMATIC mode.
• [PR #1140] [Fixes #1138] [Fixes #1104] [Electron] Fixed modem USART and buffer handling
• [PR #1130] Particle.subscribe() used with same events but changing scope between PUBLIC and PRIVATE or vice versa would potentially result in non-registered subscriptions. This was also crashing the GCC virtual device with a segfault when subscription checksums were calculated.

INTERNAL

• [PR #1196] Re-enable GNU extensions for libc globally. Fixes build with ARM GCC 4.9.3 Q1.
• [PR #1189] Typo caused a warning during compilation in wiring/no_fixture Cellular tests.
• [PR #1184] [Electron] moved cellular HAL and its direct dependencies from module 2 to module 3 to free up space (this is system-part3 was reduced in size, while system-part1 was increased)
• [PR #1167] [Fixes #1036] [GCC Virtual Device] workaround for 100% CPU usage problem.
• [PR #1146] [Closes #1040] Added asserts for checking that network calls are run on system thread.
• [PR #1134] [GCC Virtual Device] Error in socket_hal's socket_receive() logic caused random cloud connection errors.

---

System Binaries (all devices) & Device Upgrader (Photon & Electron)

located below

---

Programming and Debugging

You can view specific programming and debugging notes for this version of firmware here.

0.6.0 Release (Core/Photon/P1/Electron)

Note: This is a Release and may be used for production. Any known issues are likely slated for 0.7.0-rc.1 (check Github issues). It is available by default for all devices. To use, select the 0.6.0 version dropdown from the devices drawer.

Note: If you have previously last used one of the prerelease versions of 0.6.0 on a Core/Photon/P1 device, please re-flash it with 0.6.0. You must upgrade (locally preferred) the Electron system firmware to 0.6.0 first before you can OTA new user apps.

Note: You must update your Electron to (v0.5.3, v0.5.3-rc.2, or v0.5.3-rc.3) first before attempting to use OTA or YModem transfer to update to v0.6.0. If you use DFU over USB, you can update to v0.6.0 directly, but make sure you have installed v1.18.0 of the CLI first.

v0.6.0 (same as v0.6.0-rc.2)

BREAKING CHANGES

• UDP.flush() and TCP.flush() now conform to the Stream.flush() behavior from Arduino 1.0 Wiring. The current (correct) behavior is to wait
  until all data has been transmitted. Previous behavior discarded data in the buffer. #469

FEATURES

• Logging library for flexible system and application logging. Docs
• [Electron] Reduced data consumption connecting to the cloud with deep sleep. (See the Docs for how to gain the full data reduction.) #953
• Can set Claim Code via the Serial interface (for use by the CLI.) #602
• Device ID available via dfu-util. #949
• [Electron] Firmware Reset now available. #975 and Docs
• System Reset Reason #403 Docs
• [Photon/Electron/P1] Composite USB device driver with HID Mouse & Keyboard implementation for STM32F2 #902 and #528
• Exposes Device ID and Bootloader Version through USB descriptors while in DFU mode, Microsoft WCID support #1001
• USB vendor-specific setup request handling #1010
• [Electron] now allows OTA bootloader updates #1002
• Added Daylight Saving Time support #1058 per proposed #211 Docs

ENHANCEMENTS

• USB HID enhancements, please see PR: #1110 for a list. Closes #1096
• Local build warns if crc32 is not present. #941
• [Photon/Core] MAC address is available immediately after WiFi.on() #879
• [virtual device] support for TCP Server #1000
• [virtual device] support for EEPROM emulation #1004
• Low-level RTOS queues exposed in HAL #1018
• USART LIN bus support. #930 Docs
• USART added support for 7E1, 7E2, 7O1, 7O2 modes. #997 Docs
• Configurable resolution for analogWrite (PWM and DAC) #991 analogWrite() Docs | analogWriteResolution() Docs | analogWriteMaxFrequency() Docs
• System flag SYSTEM_FLAG_RESET_NETWORK_ON_CLOUD_ERRORS to control if the device resets the network when it cannot connect to the cloud. #946
• [Photon] 1KB system backup memory added (same size as Electron) reducing user backup memory to 3KB (3068 bytes) #1046
• Automatically adds vendored libraries from the lib directory for extended application projects #1053
• Extended spi_master_slave tests with SPI_MODE0/1/2/3 and MSBFIRST/LSBFIRST testing #1056
• [Electron] System parts reordered from 3,1,2 to 1,2,3 to preserve logical flashing order for OTA/YModem when upgrading. #1065

BUGFIXES

• Consecutive HID reports were overwriting previous the report before it was delivered to the host. Fixes #1090.
• Disabling multiple USB configurations (normal/high power) as this breaks composite driver on Windows. Fixes #1089 Serial and USBSerial1 not working at same time on Windows 8.1 Pro.
• Do not run the event loop from delay() when threading is enabled. Fixes #1055
• Cancel current connection attempt before entering the listening mode with WiFi.listen(true) and also WiFi.off(). Fixes #1013
• SoftAP mode persisting when setup complete if Wi-Fi was off. #971
• Free memory allocated for previous system interrupt handler #951 fixes #927
• Fixes to I2C Slave mode implementation with clock stretching enabled #931
• millis()/micros() are now atomic to ensure monotonic values. Fixes #916, #925 and #1042
• availableForWrite() was reporting bytes available instead of bytes available for write #1020 and #1017
• digitalRead() interferes with analogRead() #993
• USART 9-bit receiving. #968
• Fix soft AP suffix broken by the addition of device id in DCT #1030
• WKP pin should not be enabled as a wakeup source unconditionally for STOP mode #948 and #938
• General I2C Improvements and MCP23017 tests #1047
• Rebuilt Wiced_Network_LwIP_FreeRTOS.a WWD_for_SDIO_FreeRTOS.a on OSX #1057 fixes Local build stalling on object dump #1049
• Validates that module dependencies would still be satisfied after the module from the "ota_module" location is flashed (via OTA or YMODEM flashing) #1063
• System.sleep SLEEP_MODE_DEEP timing accuracy and sleep STOP mode retains user interrupt handler after resuming #1051 fixes #1043 and #1029

INTERNAL

• Removed hardcoded server IP that was used when DNS resolution fails. Instead, the cloud connection is failed and the system will have to retry. This means DNS lookup failure is now consistent with other modes of connection failure. Addresses #139 Related to #1024
• [Electron] Use floating point arithmetic in PWM to save about 1KB of flash space #1027
• Feature/vendorlibraries #1009
• [Electron] Added a 3rd system module to provide room for additional system firmware #1035
• Remove accidental SYSTEM_MODE(MANUAL) from pwm.cpp in wiring/no_fixture #1052

---

System Binaries (all devices) & Device Upgrader (Photon & Electron)

located below

---

Programming and Debugging

You can view specific programming and debugging notes for this version of firmware here programming and debugging notes for this version of firmware here.

0.5.3 Release (Core/Photon/P1/Electron)

Note: This is a Release and may be used for production. Any known issues are likely slated for 0.7.0-rc.1 (check Github issues). It is available by default for all devices. To use, select the 0.5.3 version dropdown from the devices drawer.

Note: If you have previously last used one of the prerelease versions of 0.5.3 on a Core/Photon/P1 device, please re-flash it with 0.5.3. You must upgrade (locally preferred) the Electron system firmware to 0.5.3 first before you can OTA new user apps.

v0.5.3 Changelog

FEATURE

• DTR/RTS support (open/closed detection: Serial.isConnected()). #1073

ENHANCEMENTS

• Automatically adds vendored libraries from the lib directory for extended application projects #1053
• [Electron] System firmware is now aware of system-part3 to allow OTA/YModem upgrade from >=0.5.3-rc.2 to >=0.6.0-rc.1

INTERNAL

• Feature/vendorlibraries #1009

BUGFIXES

• added HAL_IsISR() which is used to skip calling the background loop from delay(). fixes #673
• Fixes an issue of USB Serial erroneously switching to closed state. #1073
• RTC wakeup time now calculated right before entering SLEEP_MODE_DEEP. Fixes #1043
• STOP mode should retain user interrupt handler. Fixes #1029
• SoftAP mode persisting when setup complete if Wi-Fi was off. #971
• Free memory allocated for previous system interrupt handler #951 fixes #927
• availableForWrite() was reporting bytes available instead of bytes available for write #1020 and #1017
• millis()/micros() are now atomic to ensure monotonic values. Fixes #916, #925 and #1042
• Fixes to I2C Slave mode implementation with clock stretching enabled #931
• General I2C Improvements and MCP23017 tests #1047
• Rebuilt Wiced_Network_LwIP_FreeRTOS.a WWD_for_SDIO_FreeRTOS.a on OSX #1057 fixes Local build stalling on object dump #1049
• digitalRead() interfered with analogRead() #1006 fixes #993
• Validates that module dependencies would still be satisfied after the module from the "ota_module" location is flashed (via OTA or YMODEM flashing) #1063

---

System Binaries (all devices) & Device Upgrader (Photon & Electron)

located below

---

Programming and Debugging

You can view specific programming and debugging notes for this version of firmware here.

0.6.0-rc.2 Pre-release (Core/Photon/P1/Electron)

Firmware 0.6.0-rc.2 Pre-release is out on the Build IDE for Core/Photon/P1/Electron

More Updates!

• Please make sure to update your CLI to >= v1.16.0 for proper handling of 3 system parts for Electron.
• You must update your Electron to >= v0.5.3-rc.2 first before attempting to use OTA or YModem transfer to update to v0.6.0-rc.2. If you use DFU over USB, you can update to v0.6.0-rc.2 directly, but make sure you have installed >= v1.16.0 of the CLI first.

Note: This is a pre-release and is not intended for production yet. We've tested this pre-release to the best of our ability and we want to know what you think now! Please understand that some care and attention is necessary when testing this pre-release, and be sure to upgrade to the final release when it's available. It will not be available by default. To use you must select the version dropdown from the devices drawer. Downgrading back to the current release info is at the bottom of this post.

v0.6.0-rc.2

ENHANCEMENTS

• USB HID enhancements, please see PR: #1110 for a list. Closes #1096

BUGFIX

• Consecutive HID reports were overwriting previous the report before it was delivered to the host. Fixes #1090.
• Disabling multiple USB configurations (normal/high power) as this breaks composite driver on Windows. Fixes #1089 Serial and USBSerial1 not working at same time on Windows 8.1 Pro.
• Do not run the event loop from delay() when threading is enabled. Fixes #1055
• Cancel current connection attempt before entering the listening mode with WiFi.listen(true) and also WiFi.off(). Fixes #1013

INTERNAL

• Removed hardcoded server IP that was used when DNS resolution fails. Instead, the cloud connection is failed and the system will have to retry. This means DNS lookup failure is now consistent with other modes of connection failure. Addresses #139 Related to #1024

---

System Binaries (all devices) & Device Upgrader (Photon & Electron)

located below

---

Programming and Debugging

You can view specific programming and debugging notes for this version of firmware here.