Release 1.2.1

This release fixes a few bugs that snuck into 1.2.0. The build date returned by AT+VER now matches the build date returned by Murata Modem firmware. The format (length) of channel masks returned and accepted by AT+CHMASK in various regions has been fixed. The Python command line tool now shows the LoRaWAN dwell time setting in regions that enforce it.

SHA256 checksums:

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Full changelog: v1.2.0...v1.2.1

Release 1.2.0

This release provides an AT command interface that is 100% backwards compatible with the original Murata Modem firmware in version 1.1.06. Thus, version 1.2.0 of the lora-modem-abz firmware can be used as a drop-in replacement for the original Murata Modem firmware preinstalled on some TypeABZ modules. The benefits of this firmware include and open-source development model and support for the most recent LoRaWAN protocols and features (LoRaWAN 1.0.4/1.1.1).

Starting with this release, the official binaries no longer include support for regions that fall outside the frequency range supported by the TypeABZ module. This includes CN470, CN779, and EU433. These regions can be enabled in custom builds at compile time.

New features:

• ADR acknowledgement management (AT+ADRACK);
• Duty cycle backoff interval support (AT+BACKOFF);
• Listen before talk (LBT) management (AT+RSSITH, AT+CST) in KR920 and AS923 regions;
• Multicast address and security key management (AT+MCAST);
• RF channel management (AT+RFPARAM);
• Factory reset pin support on PB15/SPI2_MOSI (disabled in the official build, can be enabled at compile time).

The companion Python management tool has also been updated to include support for the new AT commands. The new version can manage LoRaWAN multicast addresses and RF channel parameters from the command line and includes support for ADR ack and LBT parameters in its outputs.

Improvements:

• Configurable data rate in AT+JOIN;
• AT$HELP and AT+CLAC are terminated with an +OK line for consistency.

Bug fixes:

• Fixes a duty cycle deadlock in OTAA Join retransmissions.

SHA256 checksums:

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Full changelog: v1.1.3...v1.2.0

Release 1.1.3

This is a minor release that contains some bug fixes and adds AT commands for device certification.

Bug fixes

• Make the companion Python library compatible with older Python versions;
• Fix a bug in the handling of confirmed uplinks;
• Fix the restoration of DevEUI and AppEUI/JoinEUI across factory resets.

New features

• New AT command AT$CW (contributed by @hubmartin);
• New AT command AT$CM (contributed by @hubmartin).

SHA256 checksums:

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Full changelog: v1.1.2...v1.1.3

Release 1.1.2

This release contains mostly bug fixes, backwards-compatible improvements to existing functionality, and a couple of new features.

Bug Fixes

• Perform OTAA Join from the main execution thread and not from the IRQ thread
• Implement more reliable AT$HALT command
• Fix bugs in the handling of the low-power sleep state
• Fix bugs in the implementation of AT$REBOOT
• Fix activation and deactivation of class C
• Fix value parsing in AT$CHMASK
• Prohibit uplinks with empty payload and non-zero port number (not supported by LoRaMac-node)
• Ignore line noise on the ATCI UART port (LPUART1)

Minor Improvements

• Remove the debugging subsystem from release builds
• Include the latest fixes and improvements to LoRaMac-node (including support for RP002-1.0.3)
• Add hard reboot option to AT+REBOOT
• Preserve DevEUI during factory reset by default (backwards compatibility with Murata Modem)

New Features

• New AT command AT$SESSION
• New high-level Python library. Published to PyPI as lora-module-abz.

SHA256 checksums:

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Full changelog: v1.1.1...v1.1.2

Release 1.1.1

This is a bug-fix release that decreases idle power consumption of the modem.

SHA256 checksums:

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Full changelog: v1.1.0...v1.1.1

Release 1.1.0

This release primarily improves OTAA Join handling in the modem:

• OTAA Join requests are automatically retransmitted up to eight times;
• The counter values returned by AT+FRMCNT after OTAA Join match the original Murata Modem firmware;
• DevNonce is preserved, making it possible for the device to rejoin the network after a factory reset;
• The command AT+JOINDC can be used to enable or disable OTAA Join duty cycling.

This release also includes the following minor improvements:

• AT$VER was switched to a machine readable format with additional information in the output;
• LoRAWAN certification port is disabled by default, but can be enabled with AT$CERT.

SHA256 checksums:

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Full changelog: v1.0.2...v1.1.0

Release 1.0.2 (bug fixes)

This release fixes a number of bugs discovered since v1.0.1:

• Make sure the value of AT+DUTYCYCLE in persistently saved NVM (EEPROM)
• Make the UART buffering layer robust against overruns
• Prevent the starvation of the AT command thread during NVM updates
• Make AT+RFQ? return the RSSI and SNR of the most recent downlink
• Restore the LoRa sync word from NVM

SHA256 checksums:

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Full changelog: v1.0.1...v1.0.2

Release 1.0.1 (bug fixes)

This release fixes a few bugs that snuck into 1.0.0:

• Make the AT command parser resilient to UART noise and incorrect configuration (baud rate)
• Make sure DMA continues operating across UART port errors
• Remove the artificial delay at the beginning of main in debugging mode
• Fix the output of AT+FRMCNT?

SHA256 checksums:

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Full Changelog: v1.0.0...v1.0.1

Release 1.0.0

This is the first public release of the open LoRaWAN modem for Murata Type ABZ modules. The implementation is based on LoRaMac-node v4.6.0. LoRaWAN 1.0.4 and 1.1.0 with regional parameters RP002-1.0.1 are supported.

The file lora-modem-abz-1.0.0.bin is the firmware compiled in release mode with debugging symbols stripped and logging disabled by default. The file lora-modem-abz-1.0.0-debug.bin contains the firmware compiled in debug mode with debugging symbols included and logging on the USART port enabled by default.

SHA256 checksums:

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