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GPIO performance
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10-08-2021, 08:31 AM
I'm running Armbian on my A64 2G Rev B and driving the GPIO pins with GPIOD and MMIO (userspace Linux). With GPIOD I get around 370 KHz doing write toggle. With MMIO is shows 2588 KHz, but on a scope it's really around 630 KHz. This same code works fine across multiple other boards https://github.com/sgjava/java-periphery...using-perf. My mapping file is https://github.com/sgjava/java-periphery...properties Is this reasonable?
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