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- Troubleshooting a LPC1768 Controller
Troubleshooting a LPC1768 Controller
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Troubleshooting a LPC1768 Controller
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Hi! For the old timers here. I need help with a checklist for determining if my LPC1768 is dead. I'm trying to revive it after a few years. It's a dev board by Technophilia Systems. I guess they have stopped their operations for quite sometime now.
My last memory about it was when I noticed that the device stopped working as it was driving a couple of motors. I couldn't figure out why the device stopped and why it isn't getting recognized as media storage device in program mode when connected through USB cable.
Current State:
The development board isn't being recognized by Windows 10 and Ubuntu through USB (in program load mode) as serial device and no COM ports are showing up. When powered through the USB cable, the power LED glows and peripheral LEDs blink for a moment (could be in the last program I burned into it, not sure though).
The Program mode LED of the development board isn't working when the board is switched from power mode to mass storage mode (program mode) for loading hex file from computer.
What I tried:
I have tried to check if it's issue of driver but the mbed driver's link seems to be broken again and it also doesn't seem to fit for Windows 10.
What could be verified but hasn't been done:
I can check if the motor driver terminals are powering the same voltage as Drive Supply input. Not sure if it's an issue of voltage controller breakdown with the board.
xiangjun_rong
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Hi, Sri,
From your description that " the power LED glows and peripheral LEDs blink for a moment", I suppose that the timer generates an interrupt, in the ISR, you toggle a LED, this is a common practice which can show that the MCU is working.
I have checked the board picture, but I do not know how you download code and debug, I suppose that there is a SWD connector on the target board so that you can download/debug code via J-Link or LPC-Link2 device....
Anyway, you can download the MCUXpresso tools from the link:
On the directory:
....\MCUXpressoIDE_11.3.1_5262\ide\Examples\LPCOpen
There is LPC1789 example code, you can download and have a test.
Hope it can help you
BR
XiangJun Rong
