Simple code but strange result - 877A

[financecatalyst]

I have written a small code to send AT commands to the Modem and then get an OK back. I have put my computer's RS232 connections in Parallel to keep an eye on the communication.

But My PIC is not Transmitting anything - I need help to make this work

My code is as follows:

Include "modedefs.bas"
DEFINE OSC 4
@ __Config _XT_OSC & _WRT_256 &_WDT_OFF &_PWRTE_ON &_BODEN_OFF & _LVP_OFF

PAUSE 10
'-----------------------------------------------------
DEFINE HSER_RCSTA 90h ' Enable serial port & continuous receive
DEFINE HSER_TXSTA 20h ' Enable transmit, BRGH = 0
DEFINE HSER_SPBRG 25  ' 2400 Baud @ 4MHz, 0.17%
DEFINE HSER_CLROERR 1 ' Clear overflow automatically

@ ERRORLEVEL -306

'------------------------------------------------------
ADCON1=7
CMCON=7
INTCON=128
OPTION_REG.7=0
TRISA=0 : PORTA=0
TRISB=0 : PORTB=0
TRISC=%10000000 : PORTC=0
TRISD=0 : PORTD=0
TRISE=0 : PORTE=0
CCP1CON=0
'-----------------------------------------------------
main:
TOGGLE PORTA.0
		HSEROUT  ["AT",10,13]
		HSERIN 1000,main,[WAIT("OK")]
PAUSE 2000
goto main

The receiving end is working fine, as I can send the "OK" from my terminal window and my PIC is getting it. But nothing appears on my Terminal window from the PIC.

I have checked that there is a constant voltage on the TX pin, 4.6V. Is something wrong with my code?

[ScaleRobotics]

Do you have a schematic? What's RC.6 connected to?

[financecatalyst]

Do you have a schematic? What's RC.6 connected to?

rc.6 ->Pin11 (MAX232) -> Pin14(MAX232) -> Modem Pin3 (Female RS232)

[Archangel]

Hi,
I have NEVER used the USART to transmit so if I am wrong, . . . well here is my try . . .
TXSTA.5 = 1 'which is transmit enable bit.

[financecatalyst]

Hi,
I have NEVER used the USART to transmit so if I am wrong, . . . well here is my try . . .
TXSTA.5 = 1 'which is transmit enable bit.

Didn't Work

[cncmachineguy]

this is from the datasheet

Bit SPEN (RCSTA<7>) and bits TRISC<7:6> have to be
set in order to configure pins RC6/TX/CK and RC7/RX/DT
as the Universal Synchronous Asynchronous Receiver

Transmitter.

So maybe you need to set trisc.6=1 also?

[financecatalyst]

this is from the datasheet


So maybe you need to set trisc.6=1 also?

Thanks for the reply. Tried the above - NO Luck