Hi~ I wrote a AP in Platform Builder5.0 to read PIO_A register status.
But it can't work. I checked sam9261 datasheet for memory mapping. PIOA address is FFFF F400~FFFF F600. In Microsoft WinCE define for Virtual memory mapping, 3~4G address is not used. Could you offer how to do when I would like to set PIO and read it's status?
PS. The attached file is TEST code (TEST.exe and SPI.dll) I compiled them and put into winCE via activesync, then executed TEST.exe

Dear Bryan,
You don't need to use Virtualalloc and virtualCopy. Look at the MmMapIoSpace function.

The second thing is that you can't write a 0 in the PDR register.
If you want to use a pin as a PIO, you must write a 1 in the corresponding bit in PER, if you want to use it as a peripheral, write a 1 in PDR.

What do you want to do exactly?

Vincent

Hi~
I have changed to use MmMapIoSpace function to set.
I included "ceddk.h" for MmMapIoSpace function.
But I got a error message as below:

BUILD: [01:0000000037:ERRORE] SPI.obj : error LNK2019: unresolved external symbol MmMapIoSpace referenced in function "int __cdecl SPI_piotest(void)" (?SPI_piotest@@YAHXZ)

BUILD: [01:0000000038:ERRORE] obj\ARMV4I\retail\SPI.dll : fatal error LNK1120: 1 unresolved externals

I add "ceddk.lib" into source file and compiled. I got another error message as below:

BUILD: [00:0000000009:ERRORE] \WINCE500\PBWorkspaces\AT91SAM9261EK_DEMOBIN_V150\SPI\: Invalid entry in sources file: ceddk.lib.

which step I lost?

PS.The attached file is the source code.

Hi,

I got the similar situation. After I included "ceddk.h" and added "ceddk.lib" to the project to compile, the builder returned the error message as below:

BUILD: [01:0000000041:ERRORE] NMAKE : U1073: don't know how to make 'C:\WINCE500\PBWorkspaces\AT91RM9200EK_Tutorial\WINCE500\AT91RM9200EK_BIN_ARMV4I\cesysgen\sdk\lib\ARMV4I\debug\ceddk.lib'
BUILD: [01:0000000043:ERRORE] NMAKE.EXE -i -c BUILDMSG=Stop. LINKONLY=1 NOPASS0=1 MAKEDLL=1 failed - rc = 2

I have added a link to the lib file and provided the path for the builder to build.

Does anyone know how to solve this? Thanks!!!

Kim