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Messages - See Jay

I have now a reprogramming issue. I have changed following parameters in Flashmagic Device configuration and programmed blinky.hex file.

1. Clock changes: high frequency crystal or resonator (4MHz .. 20MHz) - To enable 12 MHz on board crystal
2. Enabled Reset Pin
3. Enabled Brownout Detection

Erase all flash was selected with Protect ISP Code checked.

We are unable to reprogram the device after this flashing. I am attaching FM debug file with this email for a Read Device Signature option.

Could you help us out on this issue.

Thanks, Jay
Finally we got it to work!
We had a trivial issue in driving LEDs on Rxd/Txd pins. It was overloading those pins.

Thanks for your help!

LPC9xx/LPC9xxx / p89lpc931 isp programming issue
May 29, 2014, 12:17:37 AM
I am using p89lpc931 in our board. I have the ISP circuit on our board exactly as it is on keil MCB 900 board. I am using flashmagic tool 6.80 version. I get auto-baud error all the time, and I have tried all sorts of options, and controller refuses to go into programming mode.

Btw, I am using USB-SERIAL convertor for connecting my PC and board. I have also connected and tried on another PC with COM port and I have the same issue. I tried to change the baudrate to lower and higher values. But the nothing seems to work.

I am attaching the image that shows the behavior of RST pin after hitting program button on FM.

I don't see a 3 pulses for some reason on RST pin. After couple of seconds, flashmagic gives the autobaud error and RST pin comes back 'Hi' level, as you can see in the image. Can someone through some light on this.

FYI: I am using the same flashmagic with USB-SERIAL convertor for LPC2362 controller and It works great for ISP programming.