SPSTR starting location?

Falcon

I'm starting to write some code that will pass multiple BYTES via the SERIN SPSTR statement into ScratchPad RAM. The BSS&RM describes SPSTR as follows:

Input a character string of L bytes (up to 126) into Scratch Pad RAM, starting at location 0. Use GET to retrieve the characters.

Is there a modifier that would save the BYTES at any ScratchPad location other than 0? Or is the only option to use an immediate PUT command to save them to a different ScratchPad location?

I want to receive ~ 16 BYTES but I would then need 16 PUT commands to relocate them using up more memory space.

I may end up with two separate serial busses coming into the STAMP. If so, they could potentially overwrite the data written to ScratchPad locations 0-15.

Thoughts? Comments?

falcon

stamptrol

I don't think there's a provision for moving the pointer when using SPSTR. But, a simple loop after receiving will allow you to PUT the data anywhere in the scratchpad you want.

Cheers,

Tracy Allen

Confirming, no way. SPSTR always starts at zero, and you have to GET/PUT move data you want to save somewhere else before hitting another SPSTR.

Falcon

I appreciate the replys. I hadn't seen anything about that but just wanted to have it confirmed.

falcon