GET - PUT with BS2pe

Tumbler

Hello,

I'm trying to write a gps sentence to my usb mem. stick.
First i write it into the scratchpad ram with this code:

SERIN GPSpin,Baud,2000, No_GPS_Data,[noparse][[/noparse]WAIT("$GPRMC"),SPSTR 64]

Is it possible to write the whole SPRAM into the USBstick in one string? or do i have to read each byte of the SPRAM and write it into the stick?


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Mike Green

1) You do need to figure out the length of the GPS sentence you've read

2) You could use SPSTR to write the GPS string from the scratchpad ram

3) I don't know how large the buffer is inside the Vinculum chip, but that may limit how much data can be written at a time. The firmware manual for the Vinculum chip may have that information.

Tumbler

Mike,

I decided to write the sentence into the eeprom first, to avoid many writings to the usb stick.

i need max 64 bytes for one sentence. One eeprom bank memory is 2048 bytes.
So i can use 32 sentences in one bank.

y=y+1
if y=32 then WRITE_TO_STICK

GET_GPS_SENTENCE        'read valid sentence and store in into SPRAM
DEBUG DEC2 y,":"        ' sample n°
  FOR x = 0 TO 51       'i need only the first 51 bytes to store
   GET x, char          ' read source byte
    DEBUG char
    WRITE (y*64)+x, char ' write byte to target slot
  NEXT
  DEBUG CR
NEXT

Here i store 32 times (0-31) a sentence into the eeprom (bank 1)
As you can see i make a loop to read the bytes from SPRAM
can it be done more easier? i mean, reading 51 bytes in one command?
This command is not working: GET 0,SPSTR 51
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Tracy Allen

Bytes have to come from the scratchpad one at a time and then to the stick. No equivalent for SPSTR on output.

If the string is 64 bytes,

LOW vrts   ' necessary to fake receive ready while sending 
 SEROUT vtx\vcts, vBaud, [noparse][[/noparse] $8,$20,0,0,0,64,CR]
 FOR idx=0 TO 63
    GET idx, char
    SEROUT vtx\vcts, vBaud, [noparse][[/noparse]char]    ' with flow control
 NEXT
HIGH vrts

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Tracy Allen
www.emesystems.com

Tumbler

Ok thanks Tracey.

I tried that too earlier, but forgot to count the CR·LF chars to count.
But it works now.
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