FGTECH Galletto Pre-patched - Wiring Diagrams Manual 0475

jazzzz0003 said:

cant communicate and i do that many times but cant read device id

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This is a very common frustration with these units. If you are sure your "Boot Mode" bridge is good (holding it while plugging in), then the problem is usually a Windows Driver Setting called "Latency Timer".

The default setting is too slow for the flashing tool to catch the chip.

Please do this EXACT fix:

1. Open Device Manager.
2. Go to Ports (COM & LPT) -> Right-click your USB sеriаl Port (COMx) -> Properties.
3. Go to the Port Settings tab -> Click Advanced.
4. Look for Latency Timer (msec).
* It is currently set to 16.
* Change it to 1 or 2.
5. Click OK, then OK again.
6. Unplug the USB and plug it back in (repeat the Boot Mode bridge procedure while plugging in).

Now try Philips Flash Utility again:

• XTAL Frequency: Look at the silver oval metal component on your board (the crystal). Does it say 12.000 or 16.000? Set the software to match that number exactly (usually 12000).
• Baud Rate: Try 9600.

One final check:
When you click "Read Device ID", do the LEDs on the Galletto board blink rapidly for a second?

• If YES (LEDs blink): The computer is sending data, but the chip isn't answering (Wrong Boot Mode or Wrong XTAL).
• If NO (No LEDs): The computer isn't sending anything (Wrong COM port selected).

red light flashing

jazzzz0003 said:

red light flashing

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Red light flashing is good!
It means your computer is sending the signal correctly (TX is working). The problem is the chip (LPC2119) is not answering back.

This happens for only two reasons:

1. Wrong Crystal Frequency (Most Likely)
The software is speaking at the wrong speed.

• Look at your circuit board.
• Find the silver oval metal component (the Crystal) near the black chip.
• Read the number written on it.

* Does it say 12.000? -> Set Philips Utility XTAL to 12000.
* Does it say 16.000? -> Set Philips Utility XTAL to 16000.

• If you can't read it, try 12000 first. If that fails, try 16000.

2. Not in Boot Mode
The chip ignored your bridge and started normally.

• Make sure you are connecting the Boot Pin to a Solid Ground.
• The metal shell of the USB port is the best ground.
• Try this trick:

1. Bridge the Boot pin to Ground.
2. Plug in USB.
3. Keep holding the bridge.
4. Click "Read Device ID" in the software.
5. *Only release the bridge after it (hopefully) connects.*

Summary Checklist:
1. Device Manager Latency Timer = 1 msec.
2. Philips Utility Baud Rate = 9600.
3. Philips Utility XTAL = Matches your board (12000 or 16000).
4. Bridge is held TIGHT while plugging in.

Try changing the XTAL setting first. That is usually the culprit when you see red lights but get no connection.

aint work

jazzzz0003 said:

aint work

Click to expand...

Don't give up, you are 95% there.
The Red Light flashing is the proof. It means your USB drivers, the MProg fix, and the cable are all working perfectly. The computer is shouting "Hello?", but the chip (LPC2119) is sleeping and not answering.

This confirms the problem is only the Boot Mode connection. The chip is not entering "Programming Mode".

Since the standard bridge points aren't working for you, we need to be precise.

Please post a clear picture of your green circuit board (front and back).
I will edit the picture and draw a red line showing exactly which two points to touch.

While you take the photo, try the "Nuclear Option" (Direct Pin Method):
If the pads on the board are not working, go directly to the chip legs.

1. Look at the big black square chip (LPC2119).
2. Find Pin 57.
* *How to count:* Look for the small round dot on the corner of the chip. That is Pin 1. Count counter-clockwise.
* Pin 57 is on the 4th side. It is usually the 8th pin from the corner on that last side.
3. You need to connect this Pin 57 to Ground (the silver metal USB shell).
4. Hold this connection -> Plug in USB -> Wait 3 seconds -> Release.

If you can't count the pins, wait and post the photo. It is safer than shorting the wrong legs.