ATECC608A Sleep and reset the registers

[gskrish7]

I am working on embedded Linux, - I am trying implement my own to sleep function., The datasheet suggests sending 0x01 to sleep the device and this will clear the registers in chip. I tried to do that, but still the chip is not going to sleep state and still taking commands without need to send wakeup signal.

As i wokrk with ioctl I configure ioctl as below

1. ioctl( fd, I2C_SLAVE, 0x36 );
2. send( fd, sleepseq /{0x01}/, 1 );

I observed even after implementing sleep as mentioned above, the ATECC608a is accepting commands without need to send wake-up signal again. The only after introducing the sleep of 2 sec, the device goes into sleep and we wakeup and run command.

Basically, the requirement is to reset registers and state of chip before executing next command.

I faced this issue also on stm32 where we developed using baremetal. There we use superloop and I m unable to port as the the sleep is used in few places. where the superloop should only skip execution until timeout instead of actual sleep. othersie, othertasks will be disturbed

[bryan-hunt]

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