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stm32l053 USB VCP not getting detected

Question asked by spiritlingas on Jul 29, 2017
Latest reply on Jul 29, 2017 by spiritlingas

Hi,

 

                 I'm currently working on stm32l053 VCP. I've done a code to initialize & start VCP driver in stm32l053 and tested it using stm32l053-DISCO board, where it works fine. I can able to detect the com port in my pc(I've downloaded & installed the VCP driver from ST).

 

When i flash the same .bin file to my custom board i'm unable to detect the VCP in my pc. I've used the same circuit provided in the stm32l053-DISCO Schematic for my custom board. I can see voltage at USB point 4.95 V and MCU is powering on at 3.56V and Vdd USB at 3.46 V. I don't know what i'm missing in my custom board. Could anyone please help me with this issue.

 

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