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paul239955_stm1_st
paul239955_stm1_st
Visitor II
March 30, 2016
Question

STM32407 Issue

  • March 30, 2016
  • 1 reply
  • 547 views
Posted on March 30, 2016 at 13:50

Hi,

I was wondering if someone can review my schematics as I am having issues with the JTAG. The voltage rails have the correct voltages but device is unable to be detected using JFlash and JLink EDU. I had another hardware engineer to look at the schematics and PCB and they also have the same issue. They also solder the board and test the voltage lines, remove the 22R resistor from VDD and VDDA but unable to resolve the issue.I am just wondering if it is a dodgy batch of PCBs receive from the manufacturer.

Paul

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    1 reply

    Tesla DeLorean
    Tesla DeLorean
    Guru
    March 30, 2016
    Posted on March 30, 2016 at 14:06

    Check the voltages

    Check the voltage at the vcap pins

    Check the level of the nrst pin

    Check the part orientation

    Check the parts placed

    Check some of the literally dozens of troubleshooting and bring-up threads I've worked.

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