Code:
#include "p16F877A.inc"
; CONFIG
; __config 0x3FB2
__CONFIG _FOSC_HS & _WDTE_OFF & _PWRTE_ON & _BOREN_OFF & _LVP_OFF & _CPD_OFF & _WRT_OFF & _CP_OFF
rcvreg equ 0x20
delay equ 0x22
BIGdelay equ 0x23
NOTE equ 0x24
temp equ 0x25
temp2 equ 0x26
org 00
goto begin
org 04
goto dummy ;interrupt
org 30
begin
banksel PORTA
clrf PORTA
clrf PORTB
clrf PORTC
clrf PORTD
clrf PORTE
banksel ADCON1
MOVLW 6
MOVWF ADCON1 ;set port A as digital
CLRF TRISA ;all pins outputs
CLRF TRISB ;all pins outputs
CLRF TRISD ;all pins outputs
movlw b'00000000'
banksel TRISD; make all outputs
movwf TRISD
movwf TRISE
; Set up USART
banksel TRISC
movlw b'10000000'
movwf TRISC
movlw 0x27 ; 31250 baud for MIDI
movwf SPBRG
movlw b'00100100' ; async tx 8 bit
movwf TXSTA
banksel RCSTA
movlw b'10010000' ; async rx 8 bit
movwf RCSTA
clrw
clrf PORTA ; set all outputs to '0000 0000'
clrf PORTB
clrf PORTD
clrf PORTC
movlw 0x03 ;turn off all segments
movwf PORTE
movlw b'00000000'
movwf PORTA
movwf PORTB
goto start
start
banksel PIR1
getmidi btfss PIR1,RCIF ; test for incoming data
goto nextime ;continue on with other duties
movf RCREG,W
movwf rcvreg
nextime
banksel 0
movwf temp2
andlw 0x80 ;don't display status only MIDI NOTES
bz update
goto start
update movf temp2,0 ; get new midi value
disp movwf NOTE
DISPLAY movf NOTE,0
movwf temp ;copy number to temp here
movlw b'00001111' ;least signifigant digit mask
andwf temp,0
CALL hexTable
movwf PORTD ;DISPLAY LOW DIGIT
movlw b'00000010'
movwf PORTE ; turn on least signifigant digit
movlw 0x2 ; ----------------------------------
MOVWF BIGdelay ;keep on for a while.. small PAUSE
call D250
movlw b'00000011'
movwf PORTE ; turn off most signifigant digit
movlw 0x1 ; ----------------------------------
MOVWF BIGdelay ;keep on for a while.. small PAUSE
call D250
movf NOTE,0
movlw b'11110000' ;high bit mask
andwf temp, 1
RRF temp, 1
RRF temp, 1
RRF temp, 1
RRF temp, 0 ;shift right 3 times store in W
CALL hexTable
movwf PORTD ;DISPLAY CHARACTER
movlw b'00000001'
movwf PORTE ; turn on most signifigant digit
movlw 0x2 ; ----------------------------------
MOVWF BIGdelay ;keep on for a while.. small PAUSE
call D250 ; ----------------------------------
movlw b'00000011'
movwf PORTE ; turn off most signifigant digit
movlw 0x1 ; ----------------------------------
MOVWF BIGdelay ;keep on for a while.. small PAUSE
call D250
clrf RCREG ; throw out any extra bytes
goto start ; no
;bit 7DOT bit 6E bit 5G BIT 4A BIT 3D BIT 2B BIT 1F BIT 0C
hexTable movwf temp2
MOVF temp2,0
bnz disp2
ZERO RETLW b'01011111' ;0
disp2 DECFSZ temp2,1
goto xONE
ONE RETLW b'00000101' ;1
xONE DECFSZ temp2,1
goto xTWO
TWO RETLW b'01111100' ;2
xTWO DECFSZ temp2,1
goto xTHREE
THREE RETLW b'00111101' ;3
xTHREE DECFSZ temp2,1
goto xFOUR
FOUR RETLW b'00100111' ;4
xFOUR DECFSZ temp2,1
goto xFIVE
FIVE RETLW b'00111011' ;5
xFIVE DECFSZ temp2,1
goto xSIX
SIX RETLW b'01111011' ;6
xSIX DECFSZ temp2,1
goto xSEVEN
SEVEN RETLW b'00010101' ;7
xSEVEN DECFSZ temp2,1
goto xEIGHT
EIGHT RETLW b'01111111' ;8
xEIGHT DECFSZ temp2,1
goto xNINE
NINE RETLW b'00110111' ;9
xNINE DECFSZ temp2,1
goto xA
A RETLW b'01110111' ;a
xA DECFSZ temp2,1
goto xBEE
BEE RETLW b'01101011' ;b
xBEE DECFSZ temp2,1
goto xCEE
CEE RETLW b'01011010' ;c
xCEE DECFSZ temp2,1
goto xDEE
DEE RETLW b'01101101' ;d
xDEE DECFSZ temp2,1
goto xE
E RETLW b'01111010' ;e
xE RETLW b'01110010' ;f
PAUSE movlw 0xff
MOVWF BIGdelay
D250 movlw 0x80
movwf delay
l250 decfsz delay,f
goto l250
DECFSZ BIGdelay,f
GOTO D250
return
dummy retfie
endObviosly my code works. It is just a matter of setting up the USART or as in the case of the 16F1789 the EUSART. The setup is the tricky part for the 16F1789. Here is my setup code ,LISTED BELOW , so far, for the 16F1789. What do I need here and what can I throw out ? What am I missing? I would rather work with the 16F1789. i have been pulling my hair out literally for months trying to figure the proper Eusart setup just to get the above code sample to work on the 1789
Code:
#include "P16F1789.INC"
; CONFIG1
; __config 0xF9C2
__CONFIG _CONFIG1, _FOSC_HS & _WDTE_OFF & _PWRTE_ON & _CP_OFF & _CPD_OFF & _BOREN_OFF
; CONFIG2
; __config 0xDFFF
__CONFIG _CONFIG2, _WRT_OFF & _PLLEN_OFF & _LVP_OFF
rcvreg equ 0x30
delay equ 0x32
BIGdelay equ 0x33
NOTE equ 0x34 ; if over 80h or greater next bank
temp equ 0x35
temp2 equ 0x36
org 0x0 ; reset vector
goto begin
org 0x4
goto dummy
org 0x30
begin
banksel PORTA
clrf PORTA
clrf PORTB
clrf PORTC
clrf PORTD
clrf PORTE
; Set up USART
banksel BAUD1CON
movlw b'00001000'
movwf BAUD1CON
BANKSEL PIE1
movlw b'00100000'
movwf PIE1
movlw b'11010000' ;enable global and peripheral ints
movwf INTCON
banksel SPBRG
movlw 0x27 ; 31250 baud for MIDI
movwf SPBRG
;BANKSEL ANSELC
;CLRF PORTC ;Init PORTA
; LATC ;Data Latch
;CLRF LATC ;
;BANKSEL ANSELC ;
;CLRF ANSELC ;digital I/O
BANKSEL TRISC ;
MOVLW B'10000000'
MOVWF TRISC
CLRF TRISA ;all pins outputs
CLRF TRISB ;all pins outputs
CLRF TRISD ;all pins outputs
movlw b'00000000'
banksel TRISD; make all outputs
movwf TRISD
movwf TRISE
clrf PORTA ; set all outputs to '00000000'
clrf PORTB
clrf PORTD
movlw 0x03 ;turn off all segments
movwf PORTE
movlw b'00000000'
movwf PORTA
movwf PORTB
BANKSEL APFCON1
movlw b'00000010'
movwf APFCON1
banksel TX1STA
movlw b'00100100' ; async tx 8 bit
movwf TX1STA
banksel RC1STA
movlw b'10000000' ; async rx 8 bit SET SPEN
movwf RC1STA
movlw b'10010000'
movwf RC1STA ;SET cren
clrw
goto start