hserin

[Archangel]

no pain no gain

the problem is i am unable to get a serial lcd driver to function

tried many many different things still nothing
thought different commands would inprove nothing seems to work

even though i am getting something (scope) out of the pic

tried all the serial commands and different bauds ebven thought the device states 9600 8 n 1
device did work using basic stamp instructions

It's not a basic stamp, while a stamp is a pic. HUH? WHATS THAT?
PBP will program a stamp, but pics not always the same, little differences.
Hserin will not accept N9600, has to be true.
Serin wil accept N9600. Hserin will accept charactors incomming while pic is busy running subroutines, serin will not. Do a search for serial backpacks on this forum, this subject has been addressed. look at the code in my post on this subject after Darrel did his magic on it. It's sweet, uses hserin, DT instant interrupts and formats the same way as LCDOUT does. It is pretty well commented so you can learn how it works and change it to suit you.

if you just want a serial in parallel out
try

include "modedefs.bas"
pause 500
char var byte
Lcdout $fe, 1, "RTFM"
pause 1000
LOOP:
serin Portb.0, n9600, char
LCDOUT char
goto loop

JS

[Bruce]

HSERIN & HSEROUT automatically use the PIC's hardware USART pins. Which pins these are can be found in your datasheet.

Most serial LCD's require inverted data format. The hardware USART uses non-inverted, since data will normally pass through a MAX232 level converter.

If you use the hardware USART to communicate with your serial LCD, and your LCD requires inverted data, then, with HSEROUT, you'll need a TTL level converter, or use one of the other serial commands like SEROUT, SEROUT2, or DEBUG.

These commands allow you to control whether the data is inverted or non-inverted, and use just about any I/O-pin. HSEROUT does not.

[jcleaver]

still not getting a display using any of the pbp
serial out commands tried all 4 copied some programs still nothing even though the pic seems tp be transmitting something
hook up is straight foward 5- volt ,grd, and one pic pin for data out
tried many pins
using a 16f877a and very simple programs one attached

somemade mention of trisb txsta and spbrg

are these set automatically using the pbp commands if not i have no idea how to set them melanie gave some instruction on setting fuses but not sure
what i need to set

can someone help/

[Bruce]

Which boot-loader & serial LCD are you using?

[jcleaver]

using microstudio for boot loader but have tried no loader with the same results using a serial lcd from redbinary lcd is 2 * 16 it does display its strartup message so assume electrical is ok they onmly deal with c programing not much i know about that (nothing)

[Archangel]

using microstudio for boot loader but have tried no loader with the same results using a serial lcd from redbinary lcd is 2 * 16 it does display its strartup message so assume electrical is ok they onmly deal with c programing not much i know about that (nothing)

Here's your code with a couple of tweaks, have not tested it though:

'****************************************************************
'*  Name    : UNTITLED.BAS                                      *
'*  Author  : JACK CLEAVER                                      *
'*  Notice  : Copyright (c) 2007 [select VIEW...EDITOR OPTIONS] *

'*          : All Rights Reserved                               *
'*  Date    : 2/17/2007                                         *
'*  Version : 1.0                                               *
'*  Notes   :                                                   *
'*          :                                                   *
'****************************************************************
@MyConfig = _HS_OSC & _WDT_OFF & _PWRTE_ON & _LVP_ON 
@MyConfig = MyConfig & _BODEN_OFF 
@ __config  MyConfig    ; sets your programmer's "fuses"
TRISB = %11111110 ' ALL B AS INPUTS EXCEPT B.0
TRISA = %11111111 ' ALL a as inputs
INCLUDE "Modedefs.bas"  ' This is a must have for serial communications using serout
CMCON  = 7  ' turn off comparators
ADCON1 = 7  ' turn off a/d converter
DEFINE PIC16F877A
DEFINE OSC 20
DEFINE      LOADER_USED 1   ' Boot-Loader is being used
DEFINE      OSC 20          ' We're using a 20MHz oscillator
DEFINE CHAR_PACING 1000
x var byte 
  w1 var byte
w1 =0


Setup:
w1 = 1
pause 1400
Main:
for x = 1 to 6
  SEROUT portb.0,6, ["ABCD", #w1] 'mode 6 = N9600 mode 2 = T9600
  w1 = w1 + 1
  PAUSE 250
  next x
  GOTO Main
  END

[jcleaver]

thanks for the reply will try this have moved display over to a 628a and get
fairly good some garbage dont know what that is

also trying to send a escape sequence to set up the serial chip

but that does not work any ideas on this tried
dec 27 or hex 27 or "<esc>" not working
interesting will not display esc here with the <>

also why the garbarge do want to move this back to 677a so will be trying your setting
again thanks for the feedback