Code:
DEFINE LCD_DREG PORTD
DEFINE LCD_DBIT 4
DEFINE LCD_RSREG PORTD
DEFINE LCD_RSBIT 1
DEFINE LCD_EREG PORTD
DEFINE LCD_EBIT 0
DEFINE LCD_BITS 4
DEFINE LCD_LINES 2
DEFINE LCD_COMMANDUS 2000
DEFINE LCD_DATAUS 50
DEFINE I2C_SCLOUT 1
' definition I2C communication
SCL var PORTB.1 ' SCL on RB1
SDA var PORTB.0 ' SDA on RB0
'press:
MEMO var PORTB.3 '
UP var PORTB.4 ' press for FREQ UP RB.4
DOWN var PORTB.5 ' press for FREQ DOWN RB.5
INPUT UP 'Up et Down sont des entrées
INPUT DOWN
INPUT MEMO
'Fmin =88 MHz, F max= 108 MHz
' ** DECLARATION OF THE VARIABLES
b1 var BYTE
b2 var BYTE
b3 var BYTE
b5 var BYTE
F1 var WORD
F2 var WORD
F3 var WORD
ADDR1 VAR BYTE
TMP VAR WORD
TMP_LO VAR TMP.LOWBYTE
TMP_HI VAR TMP.HIGHBYTE
PLLBASE VAR WORD
PLL VAR WORD
LO VAR PLL.LOWBYTE
HI VAR PLL.HIGHBYTE
PAS VAR BYTE '1=125kHz, 2=250kHz, 4=500kHz, 8=1MHz
'*** INITIAL DATA ***
ADDR1=$C2 'adress I2C of SDA5055 (ADDR1=$C0 , adress I2C of TSA5511)
PLLBASE=696 'beginning with 87 MHz : 87 / 0,125 = 696
PAS = 1 'step of 0.1 MHZ by default ?????
PAUSE 100
LCDOUT $FE, 1 ' Clear LCD screen
LCDOUT " PLL FM 88-108" ' post text during 1 second
LCDOUT $FE,$C0
LCDOUT " BT-20"
PAUSE 1000
EEPROM 0,[$90,$01] 'initial data TMP = PLLBASE corresponds to F = 88 MHz
'The starting point is 88 MHz given by PLLBASE. One adds a shift of 125kHz * TMP
'TMP is on 16 bits, therefore 65535 possible frequencies.
'
'*** READING OF THE DECALAGE TMP ***
READ 0,TMP_LO 'reads the 8 bits of weak weight
READ 1,TMP_HI 'reads the 8 bits of strong weight
' *** BEGINNING OF THE PROGRAM***
MAIN:
PLL = PLLBASE + TMP
I2CWRITE SDA,SCL,ADDR1,[HI,LO,$8E] 'Sending of the data to the module
GOSUB CALCUL 'calculate the frequency for posting
GOSUB AFFICHAGE 'post the frequency
PAUSE 500
'*** press routine ***
BOUCLE:
BUTTON UP,0,10,2,b1,1,MONTE 'supervise the button UP
BUTTON DOWN,0,10,2,b2,1,DESCEND 'supervise the button DOWN
BUTTON MEMO,0,255,0,b5,1,STORE 'supervise the button MEMO
' only step size of 125KHz is handled
' BUTTON CH_PAS,1,255,0,b3,1, CHOIX 'supervise the button PAS
PAUSE 100 'pauses of 0.1s
GOTO BOUCLE
MONTE: '** INCREASE THE FREQUENCY OF 1 PAS (STEP)
TMP = TMP + PAS
IF TMP > 168 THEN TMP = 0 'Fmax = 108 MHz ---> (Fmax - Fmin) / 0,125 -> (108-87)/0,125 = 168
GOTO MAIN
DESCEND: '** DECREASE THE FREQUENCY OF 1 PAS (STEP)
IF TMP = 0 THEN TOP
TMP = TMP - PAS
GOTO MAIN
TOP: TMP=168 ' max reading in Tmp
GOTO MAIN
RAZ_TMP: TMP = 0
GOTO MAIN
CHOIX: '** CHOICE OF THE PAS (STEP)
IF PAS = 8 THEN SAUTE
PAS = PAS*2
GOSUB AFFICHAGE 'post the frequency
GOTO BOUCLE
SAUTE: PAS = 1
GOTO BOUCLE
CALCUL: ' ** CALCULATION OF THE FREQUENCY
F1 = PLL 'cut off 1GHz
F2 = F1/8 'give them MHz
F3 = 100*(F1//8) 'give them kHz ?????
RETURN
AFFICHAGE:
LCDOUT $FE, 1 'Clear LCD screen
'LCDOUT #1 'post the 1 of Giga we don't need this because we only have 100 of MHz!!!
LCDOUT #F2 'post the other digits
LCDOUT "." 'post the comma
LCDOUT #F3 'post the Khz
LCDOUT " MHz "
STORE:
WRITE 0, TMP_LO
WRITE 1, TMP_HI
GOTO BOUCLE
Ghange code picbasic
Originally Posted by Marin
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