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Just checked the circuit of the HC1969 board. Unlike mine, he hasn't put a pull up resistor on the RESET signal, I have 10K. The internal pull up resistor is specified as between 30K and 60K. Maybe yours is closer to 60K and the reset signal does not go high quickly enough. The chip is specified as ...

Remember, you may have several mixes on a single channel. Each one has a weight, an offset, a curve/differential etc. These are all combined together to provide a channel information. THEN the limits and sub-trim are applied.

Mike.

It takes longer to mount the SD card on FAT32, many more sectors to read. The test version effectively 'asks' the Megasound board "are you ready?" before starting to send a file. When you don't get the voice output, the board has stayed in the bootloader. The logic is: If this is a power o...

jhsa wrote:do you think it would be possible in the future to format the SD card using eepe and the serial connection?Joao

I haven't included the format code in the file system. I decided to save the flash space for someting else.

Mike.

Try using the eepe.exe posted about 6 posts back, this should give more information.

Mike.

Getting the starting point clear. You have replaced P3 with a rotary switch and fixed resistors that gives you the 5 values in your post? You want to decode these 5 values to have a different custom switch turn ON when you switch to each of these positions. You will then use these 5 custom switches ...

Yes, all OK. The 611818 is new in this version. basically, before I send a file I send an ABORT command. The Megasound board responds with the 61, followed by CAN twice 1818. I try this 3 times. If I don't see the CAN(s) then the board isn't talking to eepe. This should solve the single file problem...

More updates to try/check, this time including a linux version.
As always, save your existing version before trying these. I've added some more checking, including trying to get a definite response from the Megasound board before sending a file.

Mike.

I have no idea! I'll test it out.

Mike.

Eepe sends the ESC ESC sequence when sending a file so your problem relates to the serial. Since hyperterminal can send the ESC ESC sequence, and it is recognised I'm not quite sure why eepe is failing. Somewhere eepe is not using the COM port correctly - wrong port - wrong baud rate - wrong bits pe...

I've checked the code, and the way I added this feature. It should default to NO crosstrims unless set, either deliberately or accidently.

What method did you use to upgrade the firmware? eepe or C9X?

Mike.

The extended limit, that is also the endpoint adjust, does indeed 'stretch' or 'compress' everything, weight and offset included. The sub-trim, also on the limits page, is NOT affected by the limits. Sub-trim is the correct thing to change if you are centering a control surface, assuming you can't a...

Try using Hyperterminal on COM5. Connect up, switch the transmitter on, then press the ESC key twice. On the first press you should get E returned, on the second press you should get EF followed by carriage return, line feed and >. Just checking, the amod_last.hex you flashed is the one that is 53K ...

You are getting the sent data being echoed back when you have COM3 selected.
To send multiple files, when the dialog appears to select the files, simply select more than one, select the first file, then hold Ctrl down when selecting others.

Mike.

Yes, the FM modes are different trims. I'm trying to keep things reasonably simple, and make sure all facilities fit as standard. There are 5 flight modes, 0 - the default, and 1 to 4, the switch selectable modes. If you set the value to the letter, then the trim is specific to that mode. If you set...

Please report what data is in the window that begins with the text "Monitor".

Mike.

jhsa wrote:0xcf for the low fuse? shouldn't it be FF?

Doesn't matter, it's only setting a start up time.

Mike.

I may need to do some specific testing to try to see if I can sort this out. I've done some investigating. There is code in the bootloader that forces it to stay in the bootloader if the receive data pin is held low at power up. Unfortunately, to work properly, this relies on the watchdog timer to b...

Forget flmodetrim, that stands for "FLight MODE TRIM", and provided a method to have a different trim when activated by a switch. This is now superceeded by the flight phases recently added. It is only still in for compatibility for those who already use it. For all mixes, you have had the...

HC1969: What FUSE settings do you program into the Megasound boards? In particular, do you enable the watchdog as always on?

Moska: I don't know if you can get at the board easily, but can you test that pad 8 is actually connected to the processor pin 31?

Mike.

Yes, I have to update them both together! I'm (slowly) working on merging them into a single program. The eepskye source files are in a sub-directory from the eepe source files. One of the source files is now common to both programs!

Mike.

I notice you used COM5 this time instead of COM4 you used before, I assume the serial device has moved ports! There may be a connection problem on the Megasound board. First check, disconnect the serial and power the board: What is the voltage on pad 8, it should be around 3.6V. The voltage on pad 6...

After typing 0 (zero not the letter O) and space, the board should enter bootloader mode and stop giving voice output. You can try repeating the sequence 0 and space. If this still doesn't stop the voice output try: Switch the Tx off. Hold pad 7 on the Megasound board at ground (0V). Switch Tx on an...

Double checking connections: Serial pin 3 to Megasound pad 5. Serial pin 2 to Megasound pad 6. Serial pin 5 to Megasound pad 3 (Gnd). Connect using Hyperterminal (38400 baud, 8 bits, no parity, 1 stop bit, no flow control). Turn on the Tx and make sure you have some voice output. On hyperterminal ty...

Rest: Found a silly error, and an arithmetic overflow. Fixed in this version:
Mike.

Moska wrote: Serial-USB adapter (DB-9 Side)
Pin 2 = 0V
Pin 3 = -6.4V
Pin 5 = GND

Servo Cable (TX Side)
Pin 5 = 0.040V
Pin 6 = 0.080V
Pin 3 = GND

These are the voltages when they are NOT connected together?

Is the board working as in giving voice output?

Are you using windows or linux?

Mike.

I'll check that, it is OK in eepe!

Mike.

Flaps: Sounds like you've got something working now. It "should" work with a FAT32 card, mine is! I think I need to re-visit the code and increase some of the timeouts, at both ends. The code I 'found' on the web is probably trying to transfer data as fast as possible, and so has quite sho...

I have a bad feeling that schematics will not be available? I'm not sure whether FrSky intend to release the schematics, but they have provided the developers with them so, if they are not released, at least some of us can probably answer questions regarding areas of the circuitry. The serial port ...

I was just going to suggest that. I've also got an idea why the first file might fail. Eepe sends two ESC bytes to switch the Megasound board into serial update mode. When it switches, the board has to re-mount the SD card into the full FAT file system. If this take too long, it might miss the start...