ATmega168 7-Segmentni Display

[vojinilic]

.DSEG
MAX6675_Result: .BYTE 4
SPI_Dummy: .BYTE 1

; ***** readThermoCouple *****
readThermoCouple:
cbi PORTB,3 ; Enable CS Low
ldi SPI_Dummy, 0x00 ; Dummy Byte
out SPDR, SPI_Dummy; Send Dummy Byte
Read_Temp_MSB:
in R20, SPSR ; Read Data
sbrs R20, SPIF ; Wait Unti Read Data
rjmp Read_Temp_MSB
ldi HIGH(MAX6675_Result), SPDR ; Read Msb From MAX6675

out SPDR, SPI_Dummy; Send Dummy Byte
Read_Temp_LSB:
in R20, SPSR ; Read Data
sbrs R20, SPIF ; Wait Unti Read Data
rjmp Read_Temp_LSB
ldi LOW(MAX6675_Result), SPDR ; Read Lsb From MAX6675
sbi PORTB,3 ; Disable CS High
ret

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