Re: [ts-7000] Frame Buffer Programming ?

[Matthew Saint <>]

Great, will try on Monday

 

any idea where its documented that 0x21800000 is the video base addr?

Matt

 

----- Original Message ----
From: Eddie Dawydiuk <>
To:
Sent: Friday, 4 August, 2006 6:06:29 PM
Subject: Re: [ts-7000] Frame Buffer Programming ?

Hello,

> If so why wont ;
>
> int fd = open("/dev/mem" , O_RDWR|O_SYNC) ;
>
> regs = (unsigned short *)mmap(0, 4096,PROT_READ| PROT_WRITE,
> MAP_SHARED, fd, 0x72000000);
>
> fb = (unsigned short *)mmap(0, 640 * 480 * 2, PROT_READ|PROT_ WRITE,
> MAP_SHARED, fd, 0x72200000);
>
> allow me access?

It looks like you are using the wrong address, try using 0x21800000.

There is a program that paints all shades of red, green and blue to
video memory. You can find it here
ftp://oz.embeddedar m.com/tmp/ gradients. c.

//Eddie

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