By mistake i uploaded using Hyperterminal and XModem a dwl file compiled with another firmware
and now my Fastrack is rebooting continously (the led is on for 2 seconds and then it turns off , and this repeats forever).
How it was said on this forum I created a straight through cable from RS232 to modem and I connected
the BOOT signal with 10k resistor to GND .
I also have DwlWin .
I start DwlWin , I check under Erase , OpenAT Application I click start , it tells me please wait while…
it finishes and then it tells me Fatal timeout error : the target is no longer responding .
Am I doing someting wrong ? Or there is anoter posibility to erase the App from modem ?
Or my modem is really broken ?
You only have to connect the BOOT signal to ground while you power up the modem. The sequence should be something like this:
Power off modem
Start up DWLWin and configure correct version of firmware etc
Click the start button in DWLWin - should display searching (or similar).
Connect the boot pin to GND via 10k Resistor
Power up modem - DWLWin should ‘find’ the modem
Disconnect boot pin
Firmware upload should continue
Also, are you using a USB-serial converter to do the download? I’ve had lots of issues with various types of USB-Serial converters and DWLWin. Try using a pure serial port on a PC for your connection and see how you get on.
Lucky you! I’ve had the least problems with converters based on the FTDI 232R chips - but even then not all converters based on these chips behave the same…
Actually, the FTDI TTL-232-3V3 (as produced by FTDI themselves) have worked (perfectly) so far for me. These cables will plug straight into the UART1 pins on a Q2686 as the Q2686 UART 1 pins are 3V3 tolerant! Instant PCB connection with a six pin SIL header. Only down-side is that they are only a 4-wire serial connection…but I use these cables to program all my production PCB’s and all has been well so far
But one important thing to note: