masayuki2009 opened a new pull request #450: arch: xtensa: Call the waiti instruction in up_idle() URL: https://github.com/apache/incubator-nuttx/pull/450 ### Summary - This PR calls the waiti (wait for interrupt) instruction in up_idle() to reduce power consumption. ### Impact - This PR affects xtensa architecture (e.g. esp32) ### Testing - I tested this PR with both ESP32-DevKitC and QEMU for ESP32.
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