Activate bootloader on BlueNRG-2N

[H W]

Hi,

I'm having problems to activate the built-in BlueNRG-2N bootloader. I put DIO7 high (Boot) and perform a reset (/Reset 5ms low then high again).Then I wait 150ms to give the bootloader a little time to initialize. Then I send 0x7F on the UART-lines (DIO8/11), but I dont get a response. Is there a minimum time I have to wait before I send 0x7F ?

 

Regards

Henrik.

[Laurent LOUAZON]

Hi,

On BlueNRG-2N, after reset except wakeup from sleep, the loaded binary image is always verified from the updater FW code in order to authenticate it. The authentication process takes ~ 2 seconds. As consequence, after asserting the Reset pin, the ACI_BLUE_INITIALIZED event arrives after ~ 2 seconds and user code should take care of this delay before raising any other command to the BlueNRG-2N device.

 

Regards

Laurent