Regarding free GPIO Interrupt Pin in IMX515

[prabhur]

Hi,

I am using IMX51 EVK board.Trying to build IMX51 EVK BSP for WEC7 OS.I need one free gpio interrupt pin to receive the interrupts.

Can someone suggest any free gpio pin unused and which can be used as interrupt pin (or) better gpio pin might be used for other peripherals but can also be used for interrupt.

Regards,

Prabhu

[prabhur]

Hi Igor,

I have build IMX51 BSP for WEC7 and got the boot files(NK.nb0,eboot.nb0).Using the CFImager.exe tool i have flashed the

boot files (NK.nb0,eboot.nb0) into the SD card using the command as mentioned in the wec7 user guide.I have inserted the

SD card on slot 1 and powered on the device in "SD/MMC boot mode".In boot menu option i have selected the following

configuration.

-----------------------------------------------------------------------------
Freescale iMX SOC Menu Item
-----------------------------------------------------------------------------
[0] IP Address : 0.0.0.0
[1] Set IP Mask : 0.0.0.0
[2] Boot Delay : 3
[3] DHCP : Enabled
[4] Reset to Factory Default Configuration
[5] Select Boot Device : NK from SD/MMC
[6] Set MAC Address : ff-ff-ff-ff-ff-ff
[7] Format OS NAND Region
[8] Format All NAND Regions
[9] Bootloader Shell
[I] KITL Work Mode : Interrupt
[K] KITL Enable Mode : Disable
[P] KITL Passive Mode : Disable
[S] Save Settings
[D] Download Image Now
[L] Launch Existing Flash Resident Image Now
[E] Select Ether Device : USB Serial
[M] MMC and SD Utilities : ESDHC[1] is activated

After saving the configuration i have selected "Download Image Now" option but the image is not downloading and got  following debug prints on the serial.

   +InitSpecifiedEthDevice
   INFO: BootDevice - USB Serial.
   INFO: Waiting for Platform Builder to connect...
   usbdbgpdd: +UsbDbgPdd_Init
   

If you got anything,share me the info.Looking forward for your reply.

Regards,

Prabhu

[prabhur]

Hi Igor,

Thanks for the Info.

Regards,

Prabhu

[prabhur]

Hi Igor,

Thanks for the reply.The J16 port(EMI and NAND x8 Expansion Port) on the EVK board has two GPIO pins,
PinNum: 1(GPIO3_30) and 21(GPIO2_20).Can we use one of these two pins as interrupt pin for our external device? 

Can you see (PageNum:23) and confirm it once with the schematic?.Looking forward for your reply.

http://www.nxp.com/products/power-management/switching-regulator/i.mx51-evaluation-kit:MCIMX51EVKJ?t...

Regards,

Prabhu

[igorpadykov]

Hi Prabhu

yes any gpio pin can be use as interrupt source.

Best regards
igor

[prabhur]

Hi igor,

Thanks for the reply.I have gone through EIM and NAND signals on J16 EMI and NAND x8 Expansion Port which is present in the Generic Reference Design file under IMX51_EVK16_DESIGN_FILES.
The J16 port on the EVK board has no pins exposed and it seems like difficult to take the GPIO pin from it.
Also,can u explain the phrase "please check p.23 EVK schematic" in your last reply.
You mean to say p.23 means pin number 23.
If possible can you tell me any alternative way of getting free GPIO pin from the IMX51 EVK board.

Regards,

Prabhu

[igorpadykov]

Hi Prabhu

"p.23 EVK schematic" meant page 23.

Best regards
igor

[igorpadykov]

Hi Prabhu

one can look at EIM and NAND signals on J16 EMI and NAND x8 Expansion Port,

please check p.23 EVK schematic

Schematics (1)
IMX51_EVK16_DESIGN_FILES(REV 2.0)
http://www.nxp.com/products/power-management/switching-regulator/i.mx51-evaluation-kit:MCIMX51EVKJ?t...

Best regards
igor
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