eFuse only project

JeHu_3414236 · ‎Jun 14, 2018

Is there a PSoC Creator project that only contains eFuse data? I don't want any startup code or main(). My application must be compiled with Keil and programmed first. I don't want PSoC Programmer to overwrite anything.

MeenakshiR_71 · ‎Jun 15, 2018

Hello,

You can use any hex file that contains eFuse data and choose not to program the main or other parts of flash like shown below. Select a hex file, then click "Load from hex" or if you have a device connected "Load from device" and then uncheck all the flash options. Set the Chip lock (Options > Programmer options) to enable and that will program any eFuse data you have configured in the hex file. Refer to PSoC 6 Programming spec for details on programming eFuse.

For generating eFuse data in the hex, use the below array in any c file that you compile. Note that each byte corresponds to a bit in eFuse i.e. byte 0 of the array is bit 0 of eFuse and so on. To blow the eFuse set the byte to 1, set it to 0 if you want to verify if the bit is 0 or not and 0xFF means that bit is dont care and should not be programmed or read -

CY_SECTION(".cy_efuse") uint8 eFuse_Data[1024] =

{

0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,

0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF

};

Let me know if this helps.

Regards,

Meenakshi Sundaram R

View solution in original post

MeenakshiR_71 · ‎Jun 15, 2018