[ts-7000] Re: test TS7300 DIO1 Header

["Matt Godbolt" <>]

> This is my test program :
> 
> int main(int argc, char ** argv)
> {
>       volatile unsigned int * PBDR, *PBDDR, *PEDDR, *PEDR, 
>                           *PFDDR,*PFDR,*PCDDR,*PCDR;
> 
>       unsigned char * start;
>       
>       int fd = open("/dev/mem", O_RDWR);
>       start = mmap(0, getpagesize(), PROT_READ|PROT_WRITE,  
>                 MAP_SHARED, fd,0x80840000);

Part of your issue might be that you're opening /dev/mem without the
O_SYNC flag.  This means the kernel is at liberty to give you a
pointer to cached memory, which might (at a push!) cause the kind of
issues you're experiencing.  Worth giving it a go with O_RDWR|O_STAT
anyway!





 
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