🚀 go-pugleaf

u9066624@cc.uow.edu.au (Tippu Hassan) writes:

>Hello anyone,

>My name is Tippu and I live in Australia. I am working with the TI
>"SWDS" (Software Development Systems) board which is a support tool
>for the TMS320C25 dsp chip. I am using the TMS320C25 serial port to
>read in digitized speech samples and then storing them on external
>RAM memory which is on the SWDS board. The SWDS only has 32K bytes
>of onboard RAM avialable and therefore I can only store 2 seconds
>worth of 16-bit digitized speech. So in order to record continous
>speech I am using the cpu processor to upload these speech samples
>from the SWDS board RAM and store them on files once the RAM is full. 
>This is done via C applications written for the cpu. 
>My problem is that in order for the cpu to access the SWDS RAM once 
>it is full, it MUST place the TMS320C25 in halt mode, then upload 
>the speech samples and then unhalt the TMS320C25 to resume reading 
>in the next load of speech samples. But the cpu cannot execute this 
>process quite enough, and TMS320C25 loses some speech samples while 
>it is halted. I cannot uses the grep command on the TMS320C25, which
>makes the external RAM global, because it requires external circuitry
>for the TMS320C25 and it is wired onto the SWDS board. Can anyone offer
>any ideas or help as it would be much appreciated.




Sell it and buy yourself a DSP that works for Digital Signals.