Lpc2000

Hello Paulo,

We made the same mistake on one of our own prototype PCBs, and I did not 
get this working either. If you don't have any 8-bit devices on the bus, 
you may try to set A0 as GPIO pin and set/clear this pin to access the 
odd/even words of the flash. But keep in mind this is very tricky, 
because an access to the GPIO may happen while the EMC is still busy 
with a write request. Inserting a number of nops may help. I did not 
have any problems accessing the GPIO after a read request. Use a logic 
analyser or an oscilloscope to check your code.


Richard.



Paulo de Almeida wrote:

>Hi,
>
>The  Olimex LPC-H2294 board has an Intel Flash (TE28F320C3BD70) with
>32 Mbits arranged as 2MBx16bits. The board uses the chip at external
>memory bank 0 with memory map 0x80008000 through 0x80200000.
>According to the  TE28F320C3BD70 datasheet each memory address
>corresponds to one word (16 bits), my problem is that the LPC2294
>doesn't let me write16 bit words at consecutive addresses, ex:
>*0x80008000=0x0ff1 ,* 0x80008001=0x0ff2, *0x80008002=0x0ff3 etc.
>but forces the use of 16bit pointer so I have to use
>*0x80008000=0x0ff1 ,* 0x80008002=0x0ff2, *0x80008004=0x0ff3 each uses
>only 2Mbytes of the 4Mbyes that the TE28F320C3BD70 has.
>
>I don't know if I made myself clear, but can someone please give me
>some advice on how can I use the total 4Mbtes of the TE28F320C3BD70 ?
>
>Thanks
>
>Paulo A.
>
>
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