i.MX ProcessorsのトピックRe: solox:problem with gpio interrupt

solox:problem with gpio interrupt

will_peng — Mon, 15 Aug 2016 02:54:13 GMT

I'm working with i.mx solox.Use the gpio interrupt on m4 with MQX.

My porblem is when the A9 not boot to linux,the gpio interrupt work fine,but when the A9 boot to run linux,the gpio interrupt halt.the lwgpio_int_get_flag() return 1,but not run the interrupt callback fuction.I have change several gpios,but all the same.

can someone give me some suggustions?Thanks!

Re: solox:problem with gpio interrupt

igorpadykov — Thu, 18 Aug 2016 03:12:38 GMT

one can check if these gpios are used in linux and check

Table 52-2. RDC Peripheral Mapping i.MX6SX Reference Manual

http://cache.freescale.com/files/32bit/doc/ref_manual/IMX6SXRM.pdf

for programming interrupt please follow attached MQX Guide

sect.9.4.10 lwgpio_int_init()

Best regards

igor

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Re: solox:problem with gpio interrupt

will_peng — Wed, 24 Aug 2016 01:10:17 GMT

Thanks for you help!

I'm working with the 3.14.28.

I think the the gpios are not used in linux,and I only change the DTS .config file,not change the linux source code.

On the mqx side add RDC_PDAP_EIM_ID to rdc_perpheral_m4[] in init_hw.c.I use MQX to control the EIM;

The gpio I'm using is LWGPIO_PIN_LCD1_VSYNC.The gpio init sequence list below:

lw_gpio_init();

lwgpio_set_functionality();

lwgpio_set_attribute();

lwgpio_int_init();

_int_install_isr();

_bsp_int_init();

lwgpio_int_enable();

I'm a newer to i.mx,Please tell me what files to check.

Re: solox:problem with gpio interrupt

will_peng — Mon, 29 Aug 2016 08:34:41 GMT

The gpio on LCD1_VSYNC can work with interrupts when disable the gpio3 in dts file.But can not use the 32 pins of the gpio3 in linux now。