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USB EZ-PD™ Type-C

qinlifeng77
New Contributor

Hi, all:

             We purchased CYUSBS234 EVK (On-board USB to I2C bridge chip CY7C65211), and downloaded the firmware of CYPD4226-40LQXI chip through this bridge chip and EZ-PD Configuration Utility software. But now the software still can't find the chip, and ‘No HID/USB-Serial Bridge devices’ have not been found.

        The mode for CYUSBS234 EVK has been set to I2C, and has tested pass with USBSerialTestUtility. Figure 1 below is the test environment, Figure 2 is the EZ-PD Configuration Utility software phenomenon.

        Is there anything else to configure or check?

Best Regards!

Lifeng Qin

qinlifeng77_0-1626600438575.png

 

qinlifeng77_1-1626600453880.png

 

 

 

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1 Solution
PranavaYN
Moderator
Moderator

Hi,

Based on your comments I understand that you were able to program the device and now you are not able to it again. Is my understanding correct?

If yes, do let me know if you made any modifications to the existing CYPD4226-40LQXI project?

Also please make sure that I2C_SDA, I2C_SCL, I2C_INT_EC and GND pins are connected appropriately. Also make sure that the Board is powered.

Best regards,
Pranava

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3 Replies
PranavaYN
Moderator
Moderator

Hi,

Based on your comments I understand that you were able to program the device and now you are not able to it again. Is my understanding correct?

If yes, do let me know if you made any modifications to the existing CYPD4226-40LQXI project?

Also please make sure that I2C_SDA, I2C_SCL, I2C_INT_EC and GND pins are connected appropriately. Also make sure that the Board is powered.

Best regards,
Pranava

View solution in original post

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qinlifeng77
New Contributor

Hi, Pranava

           I never program the device. It is NVIDIA's demo board and the same as our board. The schematic of CYPD4226-40LQXI is as attached. The pin of I2C bus is No.1 and No.2. Is it right?

qinlifeng77_0-1626870272129.png

 

Best Regards,

Lifeng Qin

 

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PranavaYN
Moderator
Moderator

Hi,

The pins you are referring to is to program the chip over SWD interface.

PranavaYN_0-1627446677822.png

For I2C bootloader please refer to the i2c_boot bootloader project present along with the firmware project. 

Best regards,
Pranava
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