1. Download SPLat Firmware

=================
== Version 4.6 ==
=================
dr8_1409_release_v4-6
10 Aug 2017
- VM: Fixed InputOM that was returning wildly incorrect values.
- DR8: default SEXI app now supports address change on the fly and auto detect of TTL/485 ports.
- DR8, SEXI app timeout increased to 1 second
- NVEM may now report SPxNoResp instead of NVEMPtrOOB if there's a problem communicating with an external EEPROM
- Xwire: the Xwire slave thread could run out of stack and cause a reset
- ARM: fixed a reset that could occur if Xwire Slave was restarted when it & MODBUS Slave were operating simultaneously.
- ARM: WarmBoot now doesn't cause an error, it just restarts the VM.  This is the same behaviour as the 8bit controllers.
- ARM: SEXI was incorrectly calculating the output size limit, so a value of 37 outputs which is legal was throwing a "too big" error.
- VM: floatFromU and fixToU were corrected to treat W as big endian when transferring between U
- ARM STMicro boards: If MODBUS was set to 8 data bits even parity, a 0x00 would cause a LIN break and resulted in the packet being dumped resulting MODBUS errors (typically no response if the SPLat is a MODBUS slave).
- VM: sometimes a controller running MODBUS would reset when SPLat/PC connected due to an incorrect method of mutex release when closing the MODBUS port.
- ARM: a 16bit and 24bit ID is now available on all ARM boards.  These are a CRC of a bigger ID so there's a small chance two controllers may have the same ID (chance is obviously less with the 24bit version).
- ARMF3: volatile in typedef was placing constants in the .data segment, moved volatile keyword to variables themselves.
- SPLatVM: MemToUV and UVToMem were ignoring the u[n] offset and always starting from u[0].

=================
== Version 4.5 ==
=================
dr8_1409_release_v4-5
12 Sep 2016
- VM: fixed a serious bug in fSTTimeSince & STTest that 2 days after the controller is turned on made both functions think the elapsed time is always greater than 167772.16s.
- ARM: The SPLat/VM on ARM boards was throwing a RAM OutOfBounds error when trying to access byte 250 which is actually the legal last address.

=================
== Version 4.4 ==
=================
dr8_1409_release_v4-4
08 Jun 2016
- DR8: new SEXI app with twice the performance.  Requires firmware 4.4.
- DR8: added full production test
- VM: Doing a fGetTimer or Test quickly after starting a timer may sometimes have caused the timer to expire immediately.
- VM: WtoU, QtoU, UtoW, UtoQ, fixToU, floatFromU, would incorrectly error when loading a float into U[16+]
- VM: WaitOnKT wasn't working (incorrect opcode length)
- OS: Created IO_UNUSED() macro
- VM: Created a generic conductivity module.
- VM: GoIfInOn/Off/K were ignoring "J"
- VM: Fixed STTest which was not working correctly due to a typo.  It was especially worse with small delays.
- VM: NVReadRec & NVWriteRec were incorrectly expecting a 16 bit address but it's only an 8 bit address.
- STM32F3: EEPROM driver is working
- DR8: NVEM1 is now available; now using generic bi-LED driver
- VM: A change to detect duplicated slave entries in the Xwire table was preventing correct parsing of the table, meaning slaves often weren't being added to the I/O map.
- OS: Saw the 1 second timer getting delayed, manifested by ComTestStartTimer taking 13 seconds dignal rather than 10.  Due to timers being deleted before the next timer was fetched.
- VM: ComTestStartTimer now using fast tick to avoid expiring after 9 - 10 seconds (only following RUN from SPLat/PC, power on was always 10s).
- VM: XwireGetPollCntr now increments as soon as a packet is received rather than at the start of sending the response, this also fixed a problem where poll count was not incrementing if the slave had no data to return; interpacket time delays have been shortend to increase throughput.
- VM: Fixed display of PermStore values in the "Module" window in SPLat/PC as all bytes were off by 1, thus the first byte was always missing and the "status" was never correct.
- VM: the Xwire LCD master now sends zeroes for the command bytes (blink, etc) otherwise sending these bytes sent garbage and stuffed up the LCD.
- VM: SEXI was not working when analogue I/O didn't start at 0
- OS: analogue output number is now contigous as there would have been problem if a DAC was in the middle of PWM
- VM: now able to report analogue I/O when numbering doesn't start at 0
- VM: low speed digital (OBCB) counting now works on ARM controllers.
- SPLatVM: SEXI was not turning off blinking outputs when SPLat/PC connected
- VM: More than 10 analogues, in or out, are now correctly sent to SPLat/PC.
- DR8: Adjust COM port assignment, now TTL is 251, 485 is 252 and USB is 253
- VM: Now ensure countdown timers are cleared on VM reset
- VM: loss of SPLat/PC will now stop I/O update messages from being sent.
- VM: now able to have a dout plugin without a read function
- VM: SEXI was not receiving any _additional_ buffer from the slave device.
- VM: Analogue output PWM frequencies can now only be set for outputs exposed to the VM
- OS: New functionality allows timers to each have a different default PWM frequency
- VM: fixes to Xwire slave LCD, esp when LCD isn't 20x4.
- VM: An ARM based controller running as an Xwire slave can now display LCD text broadcast from a Master Xwire controller.
- VM: A SPLatLink "Get" was returning 1 byte less than it should.
- SPLatVM: Fixed "Not" which was converting 0 to 1 but should have been and is now converting it to 255.  This bring ARM boards in line with HC08 boards.
- SEXI: can now handle 64 analogue inputs (that's 8 DA8's!)
- ARM: fGoIfPos was getting confused by a -0.0, changed it and fGoIfNeg to use the signbit macro.
- ARM: Fixed error in SEXI that was preventing analogue output value to be sent to the slave.
- VM: Xwire error counters were only incrementing in debug builds; Xwire was not incrementing the error counter if the received packet's length was wrong.
- VM SEXI:a bug occurred when slaves did not have inputs in multiples of 8 and this would cause inputs from one slave to overwrite inputs from another.
- VM: A recent fix for Xwire caused a regression in Xwire Master that caused it to access a NULL func ptr for XwirePhys when starting Xwire.

=================
== Version 4.3 ==
=================
24 Mar 2015
- ARM: STM32 serial port lines weren't being correctly configured, the DR8 Xwire & RS485 ports weren't working; Changing interface no longer resets the port, it now just notifies the app and let's it do whatever it needs to.
- SEXI: All digital I/O's have been compacted so there are no unused lines.  This means the Xwire table is now actual number of I/O's rather than blocks of 8.
- SPLat VM ARM:Any button press will now automatically turn on the backlight even if InputK isn't called.
- ARM VM: Permstore was not being correctly erased on program download and instead was returning a status of "success" but with all 0 bytes.
- The SEXI protocol could incorrectly report multiple InputK's as it wasn't confirming a change in sequence number from the slave.
- ARM: ComRunScript can now be called anytime to change MODBUS master scripts.  The current transaction will finish before the new script starts.

2. Download STMicro DFU Demo

Download then install the STMicro DFU “demo” making sure you unstall any old version first. This tool will upload the firmware to your SPLat controller. You will need a USB Type-A to Mini-B cable.

1. Install the DFU Demo before connecting your controller to the PC. Run the DFU Demo and you’ll see this:
   
2. Install the PGM link on your controller, then apply power and connect it to your PC. (If you’re using the EC1, holding the button down when connecting USB will enter download mode) The DFU Demo will now show an available device:
3. Tick the boxes as shown, the click Choose and select the controller firmware file you downloaded above.
4. Now click Upgrade:
   
5. If you see this popup below, click Yes then wait about 30 seconds. Sadly there’s a bug in the downloader and it will crash if you don’t wait for a bit. If you hear the USB boing bong sound, you’re good to proceed to the next step.
   
6. Just say Yes. (But if you saw the read protected popup, be sure to wait about 30 seconds before clicking Yes.)
   
7. Now the new firmware will be uploaded and at the end you’ll see this
8. All done. Remove the jumper and USB cable, then power cycle your controller. You’ll need to reinstall your SPLat application.

Please be sure to tick the “Verify after download” and “Optimize Upgrade duration” checkboxes before upgrading the firmware