Ohtsji, Randie wrote:
>
> Out of 12 characters, I do properly receive the 1st, 3rd, 5th, 7th, 9th,
> 11th, and 12th character.
> On the scope, transmit looks okay.
>
> On the transmitter side I am doing a routine similar to (just off the top of
> my head):
>
> tx_send
>         movlw   0x0c            ;12 characters to send
>         movwf   txcounter
>         movlw   txbuffer                ;set up pointer
>         movwf   fsr
> tx_out:
>         movf    indf,w          ;get character to send
>         movwf   txreg
>         btfss   pir1,txif               ;check transmit buffer
>         goto    $-1             ;wait, transmit buffer not empty yet
>         incf    fsr             ;advance pointer to next RAM
>         decfsz  txcounter
>         goto    tx_out
>         return

I had the same problem until I checked TXSTA,TRMT instead of PIR1,TXIF.

Transmit
        movwf   TXREG
        bsf     STATUS,RP0
txddn   btfss   TXSTA,TRMT
        goto    txddn
        bcf     STATUS,RP0
        return