topic Re: imx6sl gpio can't enter interruput function in i.MX Processors

imx6sl gpio can't enter interruput function

威杨 — Mon, 17 Oct 2016 11:19:37 GMT

Hello

I use imx6sololite's gpio interrupts in our custom board. I meet some probloms as follow:

configuration:

PIN: GPIO2_16 :

temp = 0;
temp = readl(GPIO2_GDIR);
temp &= (~(1 << 16));
writel(temp, GPIO2_GDIR);

temp = 0;
temp = readl(GPIO2_ICR2);
temp |= (1 << 0) | (1 << 1);
writel(temp, GPIO2_ICR2);

temp = readl(GPIO2_IMR);
temp |= (1 << 16);
writel(temp, GPIO2_IMR);

PIN:GPIO3_15

temp = 0;
temp = readl(GPIO3_GDIR);
temp &= (~(1 << 15));
writel(temp, GPIO3_GDIR);

temp = 0;

temp = readl(GPIO3_ICR1);
temp |= (1 << 31) | (1 << 30);
writel(temp, GPIO3_ICR1);

temp = 0;
temp = readl(GPIO3_IMR);
temp |= (1 << 15);

writel(temp, GPIO3_IMR);

GPIO3_15 can enter interrupt funcution,working normal,but GPIO2_16 not working,could you give me some advice...

Thanks........

Re: imx6sl gpio can't enter interruput function

igorpadykov — Mon, 17 Oct 2016 23:49:08 GMT

Hi wei

please check if this pin is not used in other way (for example by other module

or in uboot), also one can attach jtag and check its register settings.

Best regards
igor
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Re: imx6sl gpio can't enter interruput function

威杨 — Tue, 18 Oct 2016 03:22:35 GMT

Thanks for your answer,but i only regeister gpio function and read back,i under uboot read gpio2_16 and gpio3_15

gpio2_16: 020a0004: 00000000

020a0010: 00000003

020a0014: 00010000

gpio3_15:

020a4004: 00000000

020a400c: c0000000

020a4014: 00008000

gpio only regeister interrupt function,but gpio3 working nornal ,gpio2 not working,please help me.......

Thanks