{"id":238,"date":"2011-01-27T13:31:10","date_gmt":"2011-01-27T21:31:10","guid":{"rendered":"https:\/\/devzone.missinglinkelectronics.com\/?p=238"},"modified":"2024-06-19T02:12:51","modified_gmt":"2024-06-19T09:12:51","slug":"linux-sysfs","status":"publish","type":"post","link":"https:\/\/devzone.missinglinkelectronics.com\/application-notes\/linux-sysfs\/","title":{"rendered":"Linux SysFS"},"content":{"rendered":"Hardware Parameter Access from Application Software TB20110127 We present a technique for accessing hardware device paramenters and control values based on the Open Source GNU\/Linux standardized concept of the sysfs virtual filesystem. Exemplary code for a motor control device demonstrates how to easily access a hardware device\u2019s registers from application software and\/or user scripts to facilitate hardware integration or system debugging. Copyright \u00a9 2026 Missing Link Electronics. All rights reserved. Missing Link Electronics, the stylized Missing Link Electronics MLE logo are the service mark and\/or trademark of Missing Link Electronics, Inc. All other product or service names and trademarks are the property of their respective owners. Interfacing between hardware and software plays an important role, for example, in rapid prototyping of control systems. Application software access to the real world by reading sensor values or by driving actuators is a basic requirement for embedded systems. By following defacto standards from the GNU\/Linux Open Source world the Missing Link Electronics \u201cSoft\u201d Hardware Platform can quickly and safely link together the hardware and the software domains. Hardware can have many control parameter values or status indicators which are not required during normal operation but may greatly facilitate debugging or realizing special applications like test and measurement equipment and data acquisition systems. However, to mitigate development risks

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Hardware Parameter Access from Application Software We present a technique for accessing hardware device paramenters and control values based on the Open Source GNU\/Linux standardized concept of the sysfs virtual filesystem. Exemplary code for a motor control device demonstrates how to easily access a hardware device\u2019s registers from application software and\/or user scripts to facilitate hardware integration<\/p>\n

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