LPC Microcontrollers中的主题 Re: GPIO interrupt delay on LPC 1769 https://community.nxp.com/t5/LPC-Microcontrollers/GPIO-interrupt-delay-on-LPC-1769/m-p/539782#M11938 <HTML><HEAD></HEAD><BODY><SPAN>bump</SPAN></BODY></HTML> Sun, 19 Jun 2016 01:13:20 GMT lpcware 2016-06-19T01:13:20Z GPIO interrupt delay on LPC 1769 https://community.nxp.com/t5/LPC-Microcontrollers/GPIO-interrupt-delay-on-LPC-1769/m-p/539781#M11937 <HTML><HEAD></HEAD><BODY><P>Hello everybody,</P><P>I'm new here and I have a small problem with the GPIO interrupt ( LPC 1769). I manage to run the "Pinint.c" program, both with rising or falling edge. But i would like to know if it's normal to have a constant 1.5 micro second delay between the edge of my signal and the start of the handler. I just switch on a led in the interruption program and i can see that the led is on 1.5 microsecond after the edge of my signal.</P><P>It seems long and i would like to decrease that but it's like it cannot be shortened. What is the reason of that delay? I read that this GPIO is asynchronous so it should be shorter that a microsecond, isn't it?</P><P></P><P>Sorry for my english, hoping i'm understandable!</P><P>Romain</P></BODY></HTML> Thu, 16 Jun 2016 09:45:00 GMT https://community.nxp.com/t5/LPC-Microcontrollers/GPIO-interrupt-delay-on-LPC-1769/m-p/539781#M11937 romainhuet 2016-06-16T09:45:00Z Re: GPIO interrupt delay on LPC 1769 https://community.nxp.com/t5/LPC-Microcontrollers/GPIO-interrupt-delay-on-LPC-1769/m-p/539782#M11938 <HTML><HEAD></HEAD><BODY><SPAN>bump</SPAN></BODY></HTML> Sun, 19 Jun 2016 01:13:20 GMT https://community.nxp.com/t5/LPC-Microcontrollers/GPIO-interrupt-delay-on-LPC-1769/m-p/539782#M11938 lpcware 2016-06-19T01:13:20Z