How do I configure a GPIO pin as an external interrupt in a Target Support Package?

Question

MathWorks Support Team 2013-1-17

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/97666-how-do-i-configure-a-gpio-pin-as-an-external-interrupt-in-a-target-support-package

采纳的回答： MathWorks Support Team

I would like to configure GPIO pin as external interrupt for F28335 board. I would like an example or demo for this.

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Answer 1

MathWorks Support Team 2013-1-17

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/97666-how-do-i-configure-a-gpio-pin-as-an-external-interrupt-in-a-target-support-package#answer_107015

example.mdl

The attached model configures GPIO0 as external interrupt to trigger the blinking of LED. The custom code in the System Initialize block assigns GPIO0 as an input to trigger the XINT1 interrupt:

EALLOW;                                        
GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 0;            
GpioIntRegs.GPIOXINT1SEL.bit.GPIOSEL = 0;      
EDIS;                                          
XIntruptRegs.XINT1CR.bit.ENABLE = 1;           
XIntruptRegs.XINT1CR.bit.POLARITY = 1;