kw32w041 not booting when GPIO5 is held low

[jacinto1m]

Hi,

I am wondering whether there is anything the the NXP bootloader that prevents the kw32w041 to boot up when I put low the GPIO5 before powering it up.

Any help is much appreciated.

[Ricardo_Zamora]

Hi,

Hope you are doing well. The GPIO5 is also the ISP Entry pin:

[3] ISP programming mode: leave pin floating high during reset to avoid entering UART programming mode or hold it low to program

You can find this information in the Data Sheet.

Best Regards,

Ricardo