Sparkfun DosOnChip

[tico]

I am attempting to write some code to interface with one of there modules,
Unfortunately I cant do any testing due to the fact they wont be in stock until May.

If some of you use these please let me know if I am on the right track.

@ DEVICE PIC16F877A,XT_OSC
include "modedefs.bas"
define CHAR_PACING 100
define OSC 20
DEFINE debug_mode 0 ' Debug sending True serial data
DEFINE debug_reg portc ' Debug Port = PortC
DEFINE debug_bit 6 ' Debug.bit = PortC.6
DEFINE debug_baud 9600 ' Default baud rate = 9600
DEFINE osc 20 ' We're using a 20 MHz oscillator
DEFINE ADC_BITS 8 ' Set A/D for 8-bit operation
DEFINE ADC_CLOCK 3 ' Set A/D clock r/c
DEFINE ADC_SAMPLEUS 50 ' Set A/D sampling time @ 50 uS
Define LCD_DREG PORTD ' Define LCD pins
Define LCD_DBIT 4 'use upper 4 bits d4-d7
Define LCD_RSREG PORTD
Define LCD_RSBIT 2
Define LCD_EREG PORTD
Define LCD_EBIT 3
DEFINE LCD_LINES 2
Define LCD_COMMANDUS 2000 ' Command Delay (uS)
Define LCD_DATAUS 50 ' Data Delay (uS)


start:
toggle portc.3
serout portc.5,N9600,[13,13] 'send init autobaud string
serout portc.5,N9600,["ow",13] 'open file for writing
serout portc.5,N9600,["w","This is a test",13] 'write this is a test to sd
serout portc.5,N9600,["q",13] 'close file
pause 1000
goto start

[tico]

47 views and so one can even tell me if I am on the right track.

[Archangel]

Hi Tico,
I am a viewer, and I have never used the modules you suggested you are about to use. I do have a comment though, Why did you bother to setup for use of debug logic true, and then call serout N9600 which if memory serves is inverted?
In fact why bother to setup debug at all as you have not used it in your code?
And then there are defines for a parallel LCD. How many LCD units are you going to use?

[tico]

The answer is simple I removed the code that was not relavant, The defines are for the final code. One port is being used as a debug port (portc.6) another port (portc.5) is being used to comm. with the DosOnChip module. I am not using a 232 driver just the resistor method that is why I stated N9600.
The define for the LCD is what the final code will use, I wil only be using one LCD module.

[mister_e]

You defined a 20 MHZ crystal, but set a XT osc... must be HS osc.

Also make sure you disable the LVP mode as well.

And the universal question.... why using SEROUT while this PIC have a built-in USART?

O.K. you need an inverted mode....

[tico]

Thanks for the advice mister_e.
I am using the ezpic 4 dev board. I have quite a few more defines than needed for this example.
So does this mean that I have written the commands to the DosOnChip module correctly? I have read the data sheet but not sure If i understood it corectly.
I would like to start coding now since the modules will not be available for at least another month. They are claiming and arrival date of 2007-06-10, figures I found something else to tinker with and cant get one untill June.
I am guessing that I need inverted mode to comm. with the module I figure two resistors are cheaper than a max233