PropBasic Confusion?

FriedV

Hi,
I try to attach a MDOG LCD to a C3 Board.
I wrote the following init code:

' ----------------------------------------------------------------------
' File......  C3_SPI.pbas
' Author....  fgvissel  28.09.2011
' for C3 Board with 6,26 MHz X-tal
' ======================================================================

' ----- Device Settings ------------------------------------------------
  DEVICE P8X32A, XTAL1, PLL16X
  XIN 6_250_000

' ----- Conditional Compilation Symbols --------------------------------
 
' ----- Constants ------------------------------------------------------

' ----- IO Pins --------------------------------------------------------
  PSI_CLR Pin 25 High
  PSI_CLK Pin  8 High

  RS      Pin 10 Output
  MOSI    Pin  9 Output
  MCLK    Pin 11 Output

' ----- Shared (HUB) Variables (Byte, Word, Long) ----------------------

' ----- User Data (DATA, WDATA, LDATA, FILE) ---------------------------

' ----- TASK Definitions -----------------------------------------------

' ----- Local Variables (LONG only) ------------------------------------
  channel var long
' ----- SUB and FUNC Definitions ---------------------------------------
  DelayMS SUB 1
  DelayUS SUB 1

' ======================================================================

PROGRAM Start

Start:
low PSI_CLR         'reset CS Counter in C3
high PSI_CLR 


channel = 0         'select S6 device
do  
  low PSI_CLK
  high PSI_CLK
  inc channel
loop until channel = 6


low RS

'Init LCD

  delayMS 40
  shiftout MOSI, MCLK, MSBFIRST,$39 
  delayUS 27
  shiftout MOSI, MCLK, MSBFIRST,$14 
  delayUS 27
  shiftout MOSI, MCLK, MSBFIRST,$55
  delayUS 27
  shiftout MOSI, MCLK, MSBFIRST,$6D
  delayUS 27
  shiftout MOSI, MCLK, MSBFIRST,$78
  delayUS 27
  shiftout MOSI, MCLK, MSBFIRST,$38
  delayUS 27
  shiftout MOSI, MCLK, MSBFIRST,$0F
  delayUS 27
  shiftout MOSI, MCLK, MSBFIRST,$06
  delayUS 27
   shiftout MOSI, MCLK, MSBFIRST,$41
 delayUS 32
high RS


Main:
' program code
GOTO Main
END

' ----- SUB and FUNC Code ----------------------------------------------
  SUB delayMS
  pause __param1
  ENDSUB

  SUB delayUS
  pauseus __param1
  ENDSUB

  
' ----- TASK Code ------------------------------------------------------



' ----------------------------------------------------------------------

This compiles ok, loading with bstc to the c3 yields:

---------- Download to RAM ----------
Brads Spin Tool Compiler v0.15.3 - Copyright 2008,2009 All rights reserved
Compiled for i386 Win32 at 08:17:48 on 2009/07/20
Loading Object C3_SPI
Program size is 920 longs
Compiled 273 Lines of Code in 0,016 Seconds
We found a Propeller Version 1
Propeller Load took 0,654 Seconds

Output completed (0 sec consumed) - Normal Termination

Program runs ok, see LA01 output (BTW The DOG LCD does not init correctly??)

Why? 920 longs -> too much for cog memory?
273 lines of code? no, spin file has 391 lines?
BTW what does the speed param mean in shiftout? MCLK time?
Friedrich

Bean

Put the SHIFTOUT command in a subroutine so it only gets generated once instead of each time.

The speed param is the clock speed multiplier.

Bean