XStream firmware revision history

Firmware revision history for the XStream radio modems
(XStream hardware versions: 4.28D , 4.25A , 4.20 )

Version 5.0 code base

Version 5000

• This is the first non-beta release of the B44X code. Repeater functionality is now slected using ATMD. Where ATMD3 = Repeater and ATMD4 = End Node.
• No new features

Version 4.0 code base

Version 4.2B5

• Fixed - SM=2 Serial port sleep not sending wake-up header

Version 4.2B0

• New - ATID is writable allowing user settable VID in range 0x10 to 0x7FFF
• New - ATCD4 asserts RXLED only for local RX activity (Channel activity indicated by ATCD0)
• New - ATSB command to allow for 2 stop bits
• New - ATBD allows custom baud rate selection. eg. ATBD 12C = 300 baud (no change for parameter values 1 through 6). Binary command for BD (0x15) now returns 2 bytes instead of 1 as in previous versions.
• Changed - "Forced AT command mode" also defaults ATCT, ATSB and ATNB

Version 4.2AF

• Fixed - Exiting "Forced AT command mode" now uses stored baud rate setting

Version 4.2AD

• Fixed - CTS startup glitch. From cold start CTS would de-assert for 2ms during module boot up.

Version 4.2AC

• Fixed - Serial port sleep missing data when used with retries
• Fixed - Cyclic sleep ST timing problems
• Fixed - Modems not waking up properly from cyclic sleep

Version 4.2AB

• Fixed - 4.2AA bugs

Version 4.2AA

• New - Select random TX frequency on start up
• New - ATRP configures RSSI PWM output
• Changed - ATRS more accurate with better RSSI calibration
• Changed - ATRN random delays now inserted after packet reception to hold off transmission
• Fixed - 4.29F bugs
• Known Bug - RSSI PWM would sometimes remain low for ATRP time

Version 4.29F

• Fixed - 4.29E bugs
• Known bug - Residual bit errors

Version 4.29E

• Changed - ATWR time now faster (slowed down in version 4.27D)
• Known bug - Problem with ATSY used with pin sleep

Version 4.29D

• New - ATCD command for forcing carrier detect signal (DCD) high or low
• Fixed - 4.29C bugs

Version 4.29C

• Fixed - 4.29B bugs
• Known bug - Problem with configuration switch used with sleep modes

Version 4.29B

• Fixed - 4.29A bugs
• Known bug - ATHV value set incorrectly
• Known bug - TX_Enable (CTS) function set incorrectly during sleep

Version 4.29A

• Changed - UART receive buffer size increase to 700+ bytes
• Known bug - Cyclic sleep not waking correctly

Version 4.28F

• Fixed - 4.28E bugs
• Known bug - ATRE doesn''''t work (use ATR1 as a work around)

Version 4.28E

• New - RSSI calibration for improved signal strength readings
• Known bug - RSSI reading 0 at times
• Known bug - ATRE doesn''''t work (use ATR1 as a work around)

Version 4.28D

• Hardware - Microprocessor changed from Atmel ATMega161 to ATMega32
• New - Upgradeable firmware using new boot loader!
• Known bug - ATRE doesn''''t work (use ATR1 as a work around)

Version 4.28A

• Fixed - 4.27F bugs
• Known bugs - Problem with ATRR used with cyclic sleep

Version 4.27F

• Fixed - 4.27E bugs
• Known bugs - ATGD, ATER and ATTR values are read only

Version 4.27E

• Fixed - 4.27D bugs
• Known bugs - problem with cyclic sleep and "+++" sequence

Version 4.27D

• New - ATCS modes 2, 3 and 4 added for expanded RS485 TX_enable support
• Changed - Receive algorithm improved
• Changed - ATWR now saves backup copy of configuration data in non-volatile memory, command takes longer to execute
• Known bugs - problem with ATWR timing out and reseting module

Version 4.27C

• New - ATSH and ATSL commands to read modem serial number
• Fixed - 4.27B bugs

Version 4.27B

• New - 1200 baud over-the-air 9XStream now available (-114dBm RX sensitivity)
• New - ATFL command to adjust buffer flow control threshold
• Changed - Gradual transmitter turn on to minimize current spikes
• Fixed - 4.25A bugs

Version 4.25A

• Hardware - Microprocessor changed from Atmel AT8515 to ATMega161
• New - ATBD 0 setting for 1200 baud interface
• New - ATNB 0, 1, 2, 3, & 4 added to support 8 data bits plus parity
• New - Support for 75 frequency hopping 24XStream (standard product uses 25 frequencies)
• Known bug - ATRE doesn''''t revert the baud rate to default
• Known bug - Problem with Serial port sleep
• Known bug - problem entering command mode with 7 bits and parity set
• Known bug - Parity changes take effect during command mode

Version 4.24G

• Fixed - 4.24F bugs

Version 4.24F

• Fixed 4.24A bugs
• Known bug - Some modules have noisier modulation

Version 4.24A

• Changed - Better receiver performance over temperature
• Known bug - problem with RTS flow control with loopback test
• Known bug - problem with RSSI after sleep mode

Version 4.23

• Changed - Better receiver performance over temperature
• Fixed - 4.22 bugs
• Known bug - Command mode can be entered before ATRR is finished retransmitting

Version 4.22

• New - 920 to 927 MHz frequency band available in XH9 XStream product
• New - ATCS 1 for RS485 TX_enable support
• Fixed - 4.20 bugs
• Known bug - Heavy RF traffic could cause radio reset
• Known bug - Invalid binary command allowed

Version 4.20

• Hardware - Microprocessor changed from Atmel AT4414 to AT8515
• New - Support for comma separated AT commands on one line
• New - ATRS 1 mode allows for flow control for data coming out of radio modem
• New - ATRR for reliable data delivery through automatic transparent acknowledgments and retransmissions
• New - ATRN for random delay slots between retransmissions
• Fixed - 4.15 bugs
• Known bugs - Cyclic sleep sometimes goes to sleep before waiting for ATST time
• Known bugs - problem with RTS flow control
• Known bugs - long header for cyclic sleep wake up not working
• Known bugs - ATRS value reset to 0 after sleep

Version 4.15

• Changed - Receive algorithm works better above 80C temperatures
• Changed - Improved ATSY command for 9600 baud modem
• Known bug - same as 4.13
• Known bug - problem with pin wake up used with cyclic sleep
• Known bug - sleep current too high in 24XStream
• Known bug - problem with ATPC used with sleep modes

Version 4.13

• New - Config button added for "Forced AT Command mode" function
• Known bug - same as 4.12
• Known bug - hard reset during cyclic sleep cause cause radio to not respond for several seconds after power up

Version 4.12

• New - ATSY command for lower latency data transfer mode of operation
• Known bug - same as 4.10
• Known bug - ATSY not working on 9600 baud radios

Version 4.10

• New - ATRT 1 mode to enable binary commands (binary command mode is disabled by default)
• Fixed - 4.09 bugs
• Known bug - ATGD and ATER reset to 0 after pin sleep
• Known bug - problem distinguishing binary command responses from received data
• Known bug - exiting AT command mode using ATCT causes module reset

Version 4.09C

• Note - the 4.0 code branch is not backwards compatible (no communication with previous versions)
• New - AT command interface for changing parameters during operation
• New - Binary command interface for changing parameters
• New - ATDT command to set module address
• New - ATMK command to configure address mask
• New - ATSM command to select Pin power down and cyclic sleep modes
• New - ATST, ATHT, ATLH, ATFH to configure sleep modes
• New - ATBD 1, 2, 3, 4, 5, 6 for selecting baud rates from 2400 to 57600.
• New - ATGD and ATER for counting good and bad RF packets
• New - ATVR command to read firmware version number
• New - ATHP for selecting one of seven hopping channels
• New - ATAT, ATBT, ATCT, ATCC, ATCN, ATE1 and ATE0 for configuring AT command mode options
• New - ATWR for saving configuration to non-volatile memory
• New - ATRE command to restore factory defaults
• Known bug - problem sending data immediately after wake up from sleep
• Known bug - problem distinguishing binary command responses from received data

Version 2.0 code base

• Note - the 2.0 code branch is not backwards compatible (no communication with previous versions)

Version 2.22

• New - Can sustain large data stream''''s (1000s of bytes) with no errors or buffer overrun
• Changed - lower latency
• Known bug - None
• Variations - Factory configurable pin power down and 1200 baud interface rate

Version 1.0 code base

Version 1.69

• Note - First production release
• Known bug - None