Feed back issue with 232++

Binu

Here I am facing a problem with one AXB-RS232++ box. I am using this to control a LCD. I assign the device no as 85:1:1 and set the baud rate 9600,8,n,1 in the box. In my program I created a buffer to process the feedback. I can able to ontrol the LCD but I am not getting any feed back to my buffer. But I noticed that the RX LED on the box is lighting up when I am sending a quarry to the LCD. Also I did a loop back test. Even in the notification option I can see the strings passing to the LCD but can?t see the strings coming back to the box. I tested this LCD with my master control serial port and its working fine.

I tried with another 232++ but the result is same any can anyone help me to fix this?

ericmedley

Binu wrote: »

Here I am facing a problem with one AXB-RS232++ box. I am using this to control a LCD. I assign the device no as 85:1:1 and set the baud rate 9600,8,n,1 in the box. In my program I created a buffer to process the feedback. I can able to ontrol the LCD but I am not getting any feed back to my buffer. But I noticed that the RX LED on the box is lighting up when I am sending a quarry to the LCD. Also I did a loop back test. Even in the notification option I can see the strings passing to the LCD but can?t see the strings coming back to the box. I tested this LCD with my master control serial port and its working fine.

I tried with another 232++ but the result is same any can anyone help me to fix this?

Please post the code where you populate the buffer. Perhaps the problem is there.

toddt

The AXB-232's seem to come with some programming in the. I have had this problem before and found that it is best to send the ZAP command to them. I as a norm create an Data event for the device and send the ZAP command everyting it come online. You will get return data once you have ZAP'd the box.

toddt

Here is a sample as to how I write the zap command.

DATA_EVENT [device]
{
ONLINE :
{
SEND_COMMAND device,'ZAP!'
SEND_COMMAND device,'RXON'
}
}

Binu

Code

This is the code

PROGRAM_NAME='LCD'

DEFINE_DEVICE

LCD = 85:1:1

TP = 10001:1:1


DEFINE_CONSTANT

DEFINE_TYPE

STRUCTURE cLCDSTATUS
{
INTEGER POWER
CHAR SOURCE[15]
}

DEFINE_VARIABLE

cLCDSTATUS LCDSTAT[5]

CHAR LCD_BUFFER [512]


DEFINE_LATCHING

DEFINE_MUTUALLY_EXCLUSIVE


DEFINE_START

CREATE_BUFFER LCD,LCD_BUFFER

DEFINE_EVENT

DATA_EVENT[LCD]
DATA_EVENT[LCD]
{
ONLINE:
{
//SEND_COMMAND DVLCD1,"'SET BAUD 9600,N,8,1,485 DISABLE'"
WAIT 50
{
//POWER_OFF_ALL_LCDS()
}

}
OFFLINE:
{

}
STRING:
{
SELECT
{
ACTIVE(FIND_STRING(LCD_BUFFER,"$58,$00,$01,$02,$91,$03,$EF",1)):
{
CLEAR_BUFFER LCD_BUFFER
LCDSTAT[1].SOURCE = 'SVIDEO'
LCDSTAT[1].POWER = 1
}
ACTIVE(FIND_STRING(LCD_BUFFER,"$58,$00,$01,$02,$91,$06,$F2",1)):
{
CLEAR_BUFFER LCD_BUFFER
LCDSTAT[1].SOURCE = 'HDMI'
LCDSTAT[1].POWER = 1
}
ACTIVE(FIND_STRING(LCD_BUFFER,"$58,$00,$01,$02,$91",1)):
{
CLEAR_BUFFER LCD_BUFFER
LCDSTAT[1].POWER = 1
}
ACTIVE(FIND_STRING(LCD_BUFFER,"$58,$00,$01,$02,$A1",1)):
{
CLEAR_BUFFER LCD_BUFFER
LCDSTAT[1].POWER = 1
}
ACTIVE(FIND_STRING(LCD_BUFFER,"$58,$00,$01,$02,$00,$01,$5C",1)):
{
CLEAR_BUFFER LCD_BUFFER
LCDSTAT[1].POWER = 0
}


}
}
}

BUTTON_EVENT[TP,1]//P ON
{
PUSH:
{
SEND_STRING LCD, "$58,$80,$02,$02,$80,$01,$5D"
}
}
BUTTON_EVENT[TP,2]// P OFF
{
PUSH:
{
SEND_STRING LCD, "$58,$80,$02,$02,$00,$00,$DC"
}
}
(***********************************************************)
(* THE ACTUAL PROGRAM GOES BELOW *)
(***********************************************************)
DEFINE_PROGRAM
WAIT 20
{
SEND_STRING LCD, "$58,$80,$00,$00,$00"
}

Binu

ZAP!

Thanks the ZAP! command works fine Thankd for the support

toddt

Great!! Glad that I could help!! Happy Holidays!!