LPCXpresso IDE中的主题 Re: Interrupt level sensitivity https://community.nxp.com/t5/LPCXpresso-IDE/Interrupt-level-sensitivity/m-p/578351#M23618 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by igorsk on Wed Apr 14 17:52:02 MST 2010</STRONG><BR /><SPAN>With level sensitive, you'll keep getting interrupts as long as the input remains active (low or high). With edge-sensitive it will happen only once per level transition.</SPAN></BODY></HTML> Thu, 16 Jun 2016 02:30:57 GMT lpcware 2016-06-16T02:30:57Z Interrupt level sensitivity https://community.nxp.com/t5/LPCXpresso-IDE/Interrupt-level-sensitivity/m-p/578350#M23617 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by LynnF on Wed Apr 14 17:25:28 MST 2010</STRONG><BR /><SPAN>Can someone please offer an explanation of the following, please.</SPAN><BR /><SPAN>Edge sensitive is obvious but what is "level sensitive"? I would assume a steady state has been reached, and if correct how long is the steady state before the interrupt is generated?</SPAN><BR /><SPAN>[FONT=Arial][SIZE=1]</SPAN><BR /><SPAN>[LEFT][/SIZE][/FONT][B][FONT=Arial][SIZE=1][COLOR=#005042][FONT=Arial][SIZE=1][COLOR=#005042][FONT=Arial][SIZE=1][COLOR=#005042]Table 111. GPIOnIS register (GPIO0IS, address 0x5000 8004 to GPIO3IS, address 0x5003[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][/B][FONT=Arial][SIZE=1][COLOR=#005042][FONT=Arial][SIZE=1][COLOR=#005042]</SPAN><BR /><SPAN>[B][SIZE=1][FONT=Arial][COLOR=#005042]8004) bit description[/COLOR][/FONT][/SIZE][/B]</SPAN><BR /><SPAN>[/COLOR][/SIZE][/FONT][/COLOR][/SIZE][/FONT][B][FONT=Arial][SIZE=1][FONT=Arial][SIZE=1]Bit Symbol Access Value Description Reset[/SIZE][/FONT][/SIZE][/FONT][/B][FONT=Arial][SIZE=1]</SPAN><BR /><SPAN>[B][SIZE=1][FONT=Arial]value[/FONT][/SIZE][/B]</SPAN><BR /><SPAN>[/SIZE][/FONT][FONT=Arial][SIZE=1][FONT=Arial][SIZE=1]11:0 ISENSE R/W Selects interrupt on pin x as level or edge sensitive[/SIZE][/FONT]</SPAN><BR /><SPAN>[SIZE=1][FONT=Arial](x = 0 to 11).[/FONT][/SIZE]</SPAN><BR /><SPAN>[SIZE=1][FONT=Arial]0x00[/FONT][/SIZE]</SPAN><BR /><SPAN>[SIZE=1][FONT=Arial]0 Interrupt on pin PIOn_x is configured as edge[/FONT][/SIZE]</SPAN><BR /><SPAN>[SIZE=1][FONT=Arial]sensitive.[/FONT][/SIZE]</SPAN><BR /><SPAN>[SIZE=1][FONT=Arial]1 Interrupt on pin PIOn_x is configured as [COLOR=red]level[/COLOR][/FONT][/SIZE]</SPAN><BR /><SPAN>[SIZE=1][FONT=Arial][COLOR=red]sensitive.[/COLOR][/FONT][/SIZE][/LEFT]</SPAN><BR /><SPAN>[/SIZE][/FONT]</SPAN></BODY></HTML> Thu, 16 Jun 2016 02:30:56 GMT https://community.nxp.com/t5/LPCXpresso-IDE/Interrupt-level-sensitivity/m-p/578350#M23617 lpcware 2016-06-16T02:30:56Z Re: Interrupt level sensitivity https://community.nxp.com/t5/LPCXpresso-IDE/Interrupt-level-sensitivity/m-p/578351#M23618 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by igorsk on Wed Apr 14 17:52:02 MST 2010</STRONG><BR /><SPAN>With level sensitive, you'll keep getting interrupts as long as the input remains active (low or high). With edge-sensitive it will happen only once per level transition.</SPAN></BODY></HTML> Thu, 16 Jun 2016 02:30:57 GMT https://community.nxp.com/t5/LPCXpresso-IDE/Interrupt-level-sensitivity/m-p/578351#M23618 lpcware 2016-06-16T02:30:57Z