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Fizikdaos (обсуждение | вклад) (Новая страница: «Driving GPIO can use the direct access to the processor registers, bypassing the Linux interface/dev/mem. At the same time, compared to the work via sysfs minimiz…») |
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You can manage GPIO using the direct access to the processor registers, bypassing the Linux interface/dev/mem. At the same time, compared to the work via sysfs, this case minimizes costs. This method can be used, | |||
if you need a very fast access to GPIO, such bitbang protocols or PWM. It should be borne in mind that the process scheduler can still contribute to the work program of significant delays. | if you need a very fast access to GPIO, such bitbang protocols or PWM. It should be borne in mind that the process scheduler can still contribute to the work program of significant delays. | ||
It is recommended to make time-critical tasks in the kernel. | It is recommended to make time-critical tasks in the kernel. |
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