RE: ESB Dynamic Address Change for Pairing

Håkon Alseth — Fri, 03 Aug 2018 11:28:50 GMT

Hi,

The example goes to system_off, which will generate a RESET on wakeup. You'll need to save your paired address to flash, and add a small routine to load pairing data at boot up in order for this to work after a reset/poweroff/systemoff.

If you replace the system off with a __WFE() or __WFI() instruction instead, you will go to system on idle mode instead, which wakes up without doing a reset.

Best regards,

Håkon

RE: ESB Dynamic Address Change for Pairing

cprehn — Thu, 02 Aug 2018 22:20:40 GMT

So what happens is the PTX device is going into low power state, and when it comes out of it, the new values put into the array are set to default.

If I understand correctly, the example code stores a loop count value through sleep. Would that be possible with an array? How would that be done? The example code has the following:

void recover_state()
{
    uint32_t            loop_count = 0;
    if ((NRF_POWER->GPREGRET >> 4) == RESET_MEMORY_TEST_BYTE)
    {
        // Take the loop_count value.
        base_addr_1          = (uint8_t)(NRF_POWER->GPREGRET & 0xFUL);
        NRF_POWER->GPREGRET = 0;
    }

    loop_count++;
    NRF_POWER->GPREGRET = ( (RESET_MEMORY_TEST_BYTE << 4) | loop_count);

    tx_payload.data[1] = loop_count << 4;
}