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7 years, 10 months ago.
wake up k64f, kl25z, kl46z
Hi
I've tried the lib wake up of Erik Olieman with this boards: frdm-k64f, frdm-kl25z, frdm-kl46z.
In the two first work fine. The consume in the deep sleep is about a few uA.
In the last frdm-kl46z the consume is about 5mA when is in deep sleep mode.
any suggestions.
1 Answer
7 years, 10 months ago.
This seems to have more to do with deepsleep itself, than wakeup. Or do you only see this with WakeUp included?
In general 5mA is roughly the current that it uses in deepsleep if it is still in debug mode. How did you measure the current? In general the mbed interface keeps it in debug mode after programming the device, and it cannot properly enter deepsleep in this state. The only way to get it out of this is to power cycle the MCU, without powercycling the interface chip. Assuming you have a multimeter in series with the KL46z power supply, disconnecting it and reconnecting it should do the job. If it still gets powered via for example diode clamps, you can pull the USB plug, and power it via the KL46z USB plug instead of the SDA one.