-----Original Message-----
From: Olin Lathrop [mailto:olin_piclist@EMBEDINC.COM]=20
Sent: Friday, October 03, 2003 5:11 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC]: What am I doing wrong?

>> RX_1
>>         BANK0                   ;TEST!!
>>         MOVLW   Rx_Buffer       ;Move Address of Rx_Buffer to W
>>         ADDWF   Rx_Num, W       ;Add Rx_Num to W
>>         MOVWF   FSR             ;Place W (Rx_Buffer + Rx_Num) into
FSR
>>         MOVF    RCREG,W ;moves RCREG into W
>>         BCF     STATUS,IRP      ;Clears IRP , Bank0
>>         MOVWF   INDF            ;copies W into INDF
>>         INCF    Rx_Num, F       ;Adds 1 to Rx_Num
>>         MOVF    Rx_Num, W       ;Moves Rx_Num to W
>>         XORLW   D'16'           ;XOR's W with 16
>>         BTFSS   STATUS,Z        ;Checks if we are at 16
>>         GOTO    RX_1            ;If not keep reading
>
>This loop will always flood the entire buffer with the received
character.
>For values of RX_NUM less than 15, it will immediately go back and
write
>the RCREG value into the next buffer location.  Since there is no wait
for
>the next character to be received, RCREG still contains the previous
>received character.

I thought that because I had continuios receive enabled that ot would
constantly read RCREG. I was looking at the RCSTA register and I didn't
see any bit that would let me know when the register had changed states.
How do making sure that the next write is reading the new RCREG value?.

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