According to the sam4e document, system tick clock source can be from prcossor or form external. However, I can't find and sample code and the external clock pin was not defined ether. If I can use external clock as system tick clock source, I can slow down the processor clock before sleep and recover it after wakeup. I think this can make the power consumption much smaller when in sleep. This will be much simplaer than tickless approach. Is can any on can help?
Discussion around product based on ARM Cortex M4 core.
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