Synteza na AD9851 a Bascom AVR

[SQ9GAC]

Witam,

Ostatnio zdobyłem scalaki AD9834 i znalazłem program do jego obsługi lecz z ograniczeniem do pasma 40M , nie wiem jak obliczyć dzielnik przy generatorze 75Mhz,80Mhz oraz dodać pełny zakres 1 do 40 Mhz , program poniżej

'*************************************************​*******
'AD9834 DDS VFO program
'
' 7.000Mhz to 7.200Mhz Limitted!
' (VFO frequency = IF frequency + Frequency)
' 2014/01/07
' JA2GQP
' BASCOM AVR 2.0.7.5(DEMO version) Compiled
'--------------------------------------------------------
' Function
'
' 1.Upper heterodyne
' 2.RIT operation(-10khz to +10khz)
' 3.STEP(10000,1000,100,10)
' 4.Memory operation is push RIT
' (Frequency and Step)
' 5. Protection operation at the time of transmission
'*************************************************​*******

$regfile = "m88adef.dat"
$crystal = 800000 '0.8Mhz clock

'--- config port ---
Config Portb = &B00000000 '0=TX,1-6=none
Config Portd = &B00001111 '0=FSYNC,1=SCLK,2=SDATA,3=none
'4=ENC B,5=ENC A,6=STEP,7=RIT
'--- port pullup ---
Portb = &B11111111 'All
Portd = &B11110000 'RIT,STEP,ENC A,ENC B

'--- debounce set ---
Config Debounce = 1

'---LCD port assign ---
Config Lcdpin = Pin , Db7 = Portc.0 , Db6 = Portc.1
Config Lcdpin = Pin , Db5 = Portc.2 , Db4 = Portc.3
Config Lcdpin = Pin , E = Portc.4 , Rs = Portc.5
Config Lcd = 16 * 2

'--- constant data ---
Const If_frq = 8468500 'IF frequency(LSB carrier point)
Const Lw_frq = 7000000 'Lower limit operation frequency
Const Hi_frq = 7200000 'Upper limit operation frequency
Const Def_frq = 7050000 'Operation frequency(initial)
Const Lw_vfo = If_frq + Lw_frq 'VFO lower limit
Const Hi_vfo = If_frq + Hi_frq 'VFO upper limit
Const Def_vfo = If_frq + Def_frq 'VFO operation frequency(initial)
Const Lw_rit = -10000 'RIT lower limit
Const Hi_rit = 10000 'RIT upper limit
'Const Scal = 4.00000 '2^28/2^26 2^26(X'tal 67.108864Mhz)
Const Scal = 5.36870912 '2^28/50000000 (X'tal 50.000Mhz)

'--- define subrutine ---
Declare Sub Enc_sub 'Encorder
Declare Sub Dds_sub 'DDS
Declare Sub Lcd_sub 'LCD
Declare Sub Stp_sub 'STEP
Declare Sub Rit_sub 'RIT
Declare Sub Rx_sub 'RX
Declare Sub Tx_sub 'TX

'--- define memory ---
Dim Vfo_dat As Long 'VFO freqency data
Dim Dds_dat As Long 'DDS frequency data
Dim Str_frq As String * 10 'String frequency
Dim Dsp_frq As String * 10 'Display frequency
Dim Sng_wrk As Single 'main channel
Dim Lng_wk1 As Long 'Long work1
Dim Lng_wk2 As Long 'Long work2
Dim Wrd_wk1 As Word 'Word work1
Dim Wrd_wk2 As Word 'Word work2
Dim Wrd_wk3 As Word 'Word work3
Dim Enc_stp As Integer 'Encorder step
Dim Rit_dat As Integer 'RIT data
Dim Int_wrk As Integer 'Integer work
Dim Flg_rit As Byte 'RIT flag
Dim Flg_tx As Byte 'TX flag
Dim Frq_eep As Eram Long 'power off frequency A
Dim Stp_eep As Eram Integer 'EEP STEP data

'--------------
'Main roution
'--------------

Main:
Flg_tx = 0
Flg_rit = 0 'RIT flag

If Frq_eep =< 0 Then 'EEP VFO data check
Vfo_dat = Def_vfo 'Initialize VFO data
Frq_eep = Vfo_dat
Else
Vfo_dat = Frq_eep 'Restore VFO data
End If

If Stp_eep =< 0 Then 'EEP STEP data check
Enc_stp = 1000
Stp_eep = Enc_stp 'Initialize STEP data
Else
Enc_stp = Stp_eep
End If 'Restore STEP data

Cursor Off
Cls
Call Lcd_sub 'LCD

Do
If Flg_tx = 0 Then
Debounce Pind.5 , 0 , Enc_sub , Sub 'Encorder
Debounce Pind.6 , 0 , Stp_sub , Sub 'Step
Debounce Pind.7 , 0 , Rit_sub , Sub 'RIT
End If

Debounce Pinb.0 , 1 , Rx_sub , Sub 'RX
Debounce Pinb.0 , 0 , Tx_sub , Sub 'TX

If Flg_rit = 1 Then
Dds_dat = Vfo_dat + Rit_dat
Else
Dds_dat = Vfo_dat
End If

If Flg_tx = 1 Then
Dds_dat = Vfo_dat
End If

Call Dds_sub

Loop
End

'-----------------------------
'Encoder check,Create DDS data
'-----------------------------

Sub Enc_sub
Int_wrk = Enc_stp
If Pind.4 = 1 Then 'Up
Lng_wk1 = Vfo_dat + Int_wrk
Lng_wk2 = Rit_dat + Enc_stp
Else
Lng_wk1 = Vfo_dat - Int_wrk 'down
Lng_wk2 = Rit_dat - Enc_stp
End If


If Flg_rit = 1 Then
Rit_dat = Lng_wk2
Else
Vfo_dat = Lng_wk1
Rit_dat = 0
End If

If Vfo_dat < Lw_vfo Then 'VFO lower limit check
Vfo_dat = Lw_vfo
End If

If Vfo_dat > Hi_vfo Then 'VFO upper limit check
Vfo_dat = Hi_vfo
End If

If Rit_dat < Lw_rit Then 'RIT lower limit check
Rit_dat = Lw_rit
End If

If Rit_dat > Hi_rit Then 'RIT upper limit check
Rit_dat = Hi_rit
End If

Call Lcd_sub
End Sub

'-----------------------------
'AD9834(DDS) Data write
'-----------------------------

Sub Dds_sub
Sng_wrk = Dds_dat * Scal
Lng_wk1 = Sng_wrk
Wrd_wk1 = Lng_wk1 And &H3FFF
Wrd_wk2 = Wrd_wk1 Or &H4000

Shift Lng_wk1 , Right , 14
Wrd_wk3 = Lng_wk1 Or &H4000

Wrd_wk1 = &H2000

Reset Portd.2
Shiftout Portd.0 , Portd.1 , Wrd_wk1 , 0
Shiftout Portd.0 , Portd.1 , Wrd_wk2 , 0
Shiftout Portd.0 , Portd.1 , Wrd_wk3 , 0
Set Portd.2
End Sub

'-----------------------------
'LCD Data write
'-----------------------------

Sub Lcd_sub
Cls
Locate 1 , 1
Lng_wk1 = If_frq
Lng_wk1 = Vfo_dat - If_frq
Str_frq = Str(lng_wk1)
Str_frq = Format(str_frq , "00.000000")
Dsp_frq = Left(str_frq , 3) + Mid(str_frq , 4 , 3) + "." + Mid(str_frq , 7 , 3)
Lcd "F:" ; Dsp_frq ; "MHz"
Locate 2 , 1
Lcd "S: "
Locate 2 , 3

If Enc_stp < 1000 Then
Lcd Enc_stp
Elseif Enc_stp = 10000 Then
Lcd "10k "
Else
Lcd "1k "
End If

If Flg_rit = 1 Then
Locate 2 , 8
Lcd "R:"
Str_frq = Str(rit_dat)
Str_frq = Format(str_frq , "00.000")
Locate 2 , 10
Lcd Str_frq
Else
Locate 2 , 8
Lcd " JA2GQP"
End If
End Sub

'-----------------------------
'Step
'-----------------------------

Sub Stp_sub
Select Case Enc_stp
Case 10000:
Enc_stp = 1000 '1000
Case 1000:
Enc_stp = 100 '100
Case 100:
Enc_stp = 10 '10
Case 10:
Enc_stp = 10000 '10000
Case Else:
Enc_stp = 1000 '1000(initial)
End Select

Call Lcd_sub
End Sub

'-----------------------------
'RIT
'-----------------------------

Sub Rit_sub
If Flg_rit = 0 Then
Rit_dat = 0
Flg_rit = 1
Frq_eep = Vfo_dat 'Save VFO data
Stp_eep = Enc_stp 'Save STEP data
Else
Flg_rit = 0
End If
Call Lcd_sub
End Sub

'-----------------------------
'RX
'-----------------------------

Sub Rx_sub
If Flg_tx = 1 Then
Flg_tx = 0 'TX flag rest
Locate 1 , 1
Lcd "F"
End If
End Sub

'-----------------------------
'TX
'-----------------------------

Sub Tx_sub
If Flg_tx = 0 Then
Flg_tx = 1 'TX flag set
Locate 1 , 1
Lcd "T"
End If
End Sub