Implementation of the User-defined GPIO Interrupt Based on PXA270

Abstract

In order to use one of the PXA270 GPIO pins to achieve the key interrupt,interrupt mechanism for GPIO is built.The hardware architecture of PXA270 interrupt system and the interrupt handling mechanism of Windows CE are discussed,and then the concept physical interrupt identifier and the logic interrupt identifier are proposed.The IST model of driver development is also discussed.By modifying the OAL code and the key functions of device driver,one can add a user-defined GPIO interrupt on the PXA270 application platform and establish the enforcement mechanism of the user-defined GPIO interrupt,which becomes the basis for the development of the keyboard driver.

Cite this paper

@article{sun2013implementation,
  title = {{Implementation of the User-defined GPIO Interrupt Based on PXA270}},
  author = {Sun, Hui},
  journal = {Journal of Hebei Normal University},
  year = {2013}
}

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