How do I make to acquire data in entry with HSERIN to 31250 Baudrate with 20 MHz clock and PIC16f877?.I must handle the MIDI.
Can someone help me?
I'm try with this code...but no data!.... WHy?
@ DEVICE HS_OSC
DEFINE OSC 20
B0 VAR BYTE
B1 VAR BYTE
BIT5 VAR BIT
BIT4 VAR BIT
DEFINE HSER_RCSTA 90h
DEFINE HSER_TXSTA 24h
DEFINE HSER_BAUD 31250
DEFINE HSER_CLOERR 1
TRISA = $85
PORTA = $5
TRISB = $86
PORTB = $6
TRISC = $87
PORTC = $7
TRISD = $88
PORTD = $8
TRISE = $ff
PORTE = $9
PIR1 = $0C
TXREG = $19
RCREG = $1A
TXSTA = $98
POKE TRISA, %11011111
poke TRISB, %00000011
poke TRISC, %10111111
poke TRISD, %00000000
poke TRISE, %00000011
POKE PORTD, %00000000
POKE PORTB, %00000000
RCSTA = $90
'-------------------------------------------------
loop:
Gosub charin
If B1 = 0 Then loop
Gosub charout
Goto loop
charin:
B1 = 0
BIT5 = PIR1 & $20
If Bit5 = 0 Then ciret
Peek RCREG,B1
ciret:
Return
charout:
BIT4 = PIR1 & $0F
If Bit4 = 0 Then charout
Poke TXREG,B1
Return
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