communicating between UART and Memory dev ?

Hi Sankalp,

You can always read and write to memory using below:

IOWR_32DIRECT(address, offset, pattern); // for write

IORD_32DIRECT(address, pattern); // for read

-Baycool

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originally posted by baycool@Sep 30 2005, 03:12 PM

hi sankalp,

you can always read and write to memory using below:

iowr_32direct(address, offset, pattern); // for write

iord_32direct(address, pattern); // for read

-baycool

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hi ,

Could i know more about these functions?

I am able to capture character through Uart using fget(ch) into a char variable, now how to use the above funtions to write into an onchip memory.i.e what will be the address,offset?

Could you please help me out ?

Regards,

Sankalp

To put it another way:

IOWR_32DIRECT(base address, offset from base address, data you want to write); // for write

IORD_32DIRECT(base address, offset from base address); // for read

If you want to see their definitions take a look at components\altera_nios2\HAL\inc\io.h

(they boil down to a data cache bypassing read or write instruction)

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originally posted by sankalp.singhal@Oct 4 2005, 01:56 AM

how to use the above funtions to write into an onchip memory.i.e what will be the address,offset?<div align='right'><{post_snapback}> (index.php?act=findpost&pid=10119)

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Create the onchip memory peripheral in SOPC Builder, and give it an appropriate name. Regenerate your system. In the IDE, regenerate your project&#39;s system library. Open the system.h file in there and somewhere in there is the base address of the memory peripheral.

For example, if I created an "On-chip memory (RAM or ROM)" device and named it "UART_cache", then regenerate SOPC, then regenerate system library, somewhere in the system library&#39;s system.h file will be a# define setting UART_CACHE_BASE to the base address of the on-chip memory. I don&#39;t remember if there is also a symbol generated for the memory&#39;s size.

Hi there,

Kindly, I have Terasic DE2-70 board with Nios 2 IDE v11.0 to develop some application on it, but I have a problem it is: how can I (store/read) data (to/from) my host computer(Hard Disk for example) on running time by using ANSII C library function such as (fopen() , fget(), fput(), .....);

Could somebody please assist me on that.

Thanks.....................