Funkmodule und Atmels

**Knickohr** · 06.07.2007, 22:12

Guten Abend,

ich habe auch meinen Empfänger am Laufen. Doch leider etwas Ernüchterung. Es wird nichts übertragen, nein falsch, es wird schon was übertragen, ist aber lauter Müll.

Ich bin mir absolut sicher, das der Sender etwas sendet. Das Spiel mit dem Fernseher funktioniert und wenn ich am Empfänger RFM12-Modul an den VD-Ausgang eine LED dran hänge, blinkt die sauber im 1-Sekunden Takt. Der Sender ist so eingestellt, das er alle Sekunde den Text wiederholt.

Nun ja, ich denke, der Empfänger bleibt in der RF12_ready-Schleife hängen und kommt nicht mehr raus. Der Spi-sdo-Ausgang (MISO-Pin) geht auch nie auf 0. Seltsam.

Hier mal der abgeänderte Code.

Vom Sender :

Code:

' Atmega8
' VDD -> VCC
' GND -> GND
' SDI -> MOSI (PB3, Pin 17)
' SDO -> MISO (PB4, Pin 18)
' SCK -> SCK (PB5, Pin 19)
' nSel -> SS (PB2, Pin 16)
' Fsk - > R 10k nach VDD

' Atmega16
' VDD -> VCC
' GND -> GND
' SDI -> MOSI (PB5, Pin 6)
' SDO -> MISO (PB6, Pin 7)
' SCK -> SCK (PB7, Pin 8)
' nSel -> SS (PB4, Pin 5)
' Fsk - > R 10k nach VDD

$regfile = "m8def.dat"
$crystal = 1000000                                                              '
$hwstack = 32
$swstack = 32
$framesize = 40

Declare Sub Rf12_init
Declare Function Rf12_trans(byval Wert As Word) As Word
Declare Sub Rf12_setfreq(byval Freq As Single)
Declare Sub Rf12_setbandwith(byval Bandwith As Byte , Byval Gain As Byte , Byval Drssi As Byte)
Declare Sub Rf12_setbaud(byval Rfbaud As Long)
Declare Sub Rf12_setpower(byval Outpower As Byte , Byval Fskmod As Byte)
Declare Sub Rf12_ready
Declare Sub Rf12_readys
Declare Sub Rf12_txdata(byval Maxchar As Byte)
Declare Sub Rf12_rxdata(byval Maxchar As Byte)
Declare Sub Senden
Declare Sub Empfangen

Const Rf12freq = 433.92
Const Rf12baud = 19200
Const Maxchar = 32

Config Lcdpin = Pin , Db4 = Portc.2 , Db5 = Portc.3 , Db6 = Portc.4 , Db7 = Portc.5 , E = Portc.1 , Rs = Portc.0
Config Lcd = 16 * 2 , Chipset = Dogm162v3

Cursor Off Noblink
Cls

' config the SPI in master mode.The clock must be a quarter of the slave cpu
' Hier ggf. den SoftSPI reinmachen
Config Spi = Hard , Interrupt = Off , Data Order = Msb , Master = Yes , Polarity = Low , Phase = 0 , Clockrate = 128 , Noss = 1
Config Portb.1 = Output                                                         ' LED zur Schleifenkontrolle

' werden benötigt für rf12_ready
Spi_cs Alias Portb.2                                                            ' SS-Pin
Config Spi_cs = Output
Spi_sdo Alias Pinb.4                                                            ' MISO-PIN
Set Spi_cs

' init the spi pins
Spiinit

Dim Count As Byte
Dim Temp As Word
Dim Rfdata(32) As Byte
Dim Text As String * Maxchar At Rfdata Overlay
Dim S As String * 10

Locate 1 , 1 : Lcd "Init RFM12      "
Waitms 100
Call Rf12_init                                                                  ' ein paar Register setzen (z.B. CLK auf 10MHz)
Locate 1 , 1 : Lcd "Set Frequenz    "
Waitms 100
Call Rf12_setfreq(rf12freq)                                                     ' Sende/Empfangsfrequenz auf 433,92MHz einstellen
Locate 1 , 1 : Lcd "Set Bandwith    "
Waitms 100
Call Rf12_setbandwith(4 , 1 , 4)                                                ' 200kHz Bandbreite, -6dB Verstärkung, DRSSI threshold: -79dBm
Locate 1 , 1 : Lcd "Set Baudrate    "
Waitms 100
Call Rf12_setbaud(rf12baud)                                                     ' 19200 baud
Locate 1 , 1 : Lcd "Set Tx-Power    "
Waitms 100
Call Rf12_setpower(0 , 6)                                                       ' 1mW Ausgangangsleistung, 120kHz Frequenzshift

Text = "Dies ist ein 433MHz Test !!!!!{013}{010}"

' Je nachdem ob Sender oder Empfänger die entsprechenden Zeilen aktivieren

Do                                                                              ' Ewigschleife
   Pulseout Portb , 1 , 500                                                     ' Schleifenkontrolle
   Senden
   Locate 1 , 1 : Lcd "Ready           "
   Wait 1
Loop

End

' ########################################################################
' ####### Tranceiverroutinen
' ########################################################################

Sub Empfangen
   Locate 2 , 1 : Lcd "Empfange        "
   Waitms 100
   Call Rf12_rxdata(maxchar)
   Locate 2 , 1
   For Count = 1 To Maxchar
      Lcd Chr(rfdata(count)) ;
      Waitms 100
   Next Count
End Sub

Sub Senden
   Locate 1 , 1 : Lcd "Sende           "
   Waitms 100
   Call Rf12_txdata(maxchar)
   Waitms 10
End Sub

' ########################################################################
' ###### Unterroutinen
' ########################################################################

Sub Rf12_init:
   Waitms 150
   Temp = Rf12_trans(&Hc0e0)
   Temp = Rf12_trans(&H80d7)
   Temp = Rf12_trans(&Hc2ab)
   Temp = Rf12_trans(&Hca81)
   Temp = Rf12_trans(&He000)
   Temp = Rf12_trans(&Hc800)
   Temp = Rf12_trans(&Hc4f7)
End Sub

Sub Rf12_setfreq(byval Freq As Single)
   Freq = Freq - 430.00
   Temp = Freq / 0.0025
   If Temp < 96 Then
      Temp = 96
   Elseif Temp > 3903 Then
      Temp = 3903
   End If
   Temp = Temp + &HA000
   Temp = Rf12_trans(temp)
End Sub

Sub Rf12_setbandwith(byval Bandwith As Byte , Byval Gain As Byte , Byval Drssi As Byte)
   Drssi = Drssi And 7
   Gain = Gain And 3
   Temp = Bandwith And 7
   Shift Temp , Left , 2
   Temp = Temp + Gain
   Shift Temp , Left , 3
   Temp = Temp + Drssi
   Temp = Temp + &H9400
   Temp = Rf12_trans(temp)
End Sub


Sub Rf12_setbaud(byval Rfbaud As Long )
   Local Ltemp As Long
   If Rfbaud < 663 Then Exit Sub
   If Rfbaud < 5400 Then
      Temp = 43104 / Rfbaud
      Temp = Temp + &HC680
   Else
      Ltemp = 344828 / Rfbaud
      Temp = Ltemp
      Temp = Temp + &HC600
   End If
   Decr Temp
   Temp = Rf12_trans(temp)
End Sub

Sub Rf12_setpower(byval Outpower As Byte , Byval Fskmod As Byte)
   Outpower = Outpower And 7
   Temp = Fskmod And 15
   Shift Temp , Left , 4
   Temp = Temp + Outpower
   Temp = Temp + &H9800
   Temp = Rf12_trans(temp)
End Sub

Sub Rf12_txdata(byval Maxchar As Byte)
   Temp = Rf12_trans(&H8238)
   Rf12_ready
   Temp = Rf12_trans(&Hb8aa)
   Rf12_ready
   Temp = Rf12_trans(&Hb8aa)
   Rf12_ready
   Temp = Rf12_trans(&Hb8aa)
   Rf12_ready
   Temp = Rf12_trans(&Hb82d)
   Rf12_ready
   Temp = Rf12_trans(&Hb8d4)
   Rf12_ready
   For Count = 1 To Maxchar
      Rf12_ready
      Temp = &HB800 + Rfdata(count)
      Temp = Rf12_trans(temp)
   Next Count
   Rf12_ready
   Temp = Rf12_trans(&H8208)
End Sub

Sub Rf12_rxdata(byval Maxchar As Byte)
   Temp = Rf12_trans(&H82c8)
   Temp = Rf12_trans(&Hca81)
   Temp = Rf12_trans(&Hca83)
   For Count = 1 To Maxchar
      Rf12_ready
      Temp = Rf12_trans(&Hb000)
      Rfdata(count) = Temp
   Next Count
   Temp = Rf12_trans(&H8208)
End Sub

Function Rf12_trans(byval Wert As Word) As Word
   Local Lowbyte As Byte
   Local Highbyte As Byte
   Lowbyte = Wert And 255
   Shift Wert , Right , 8
   Reset Spi_cs
   Highbyte = Spimove(wert)
   Lowbyte = Spimove(lowbyte)
   Set Spi_cs
   Temp = Highbyte * 256
   Temp = Temp + Lowbyte
   Rf12_trans = Temp
End Function

Sub Rf12_ready                                                                  ' ready Senden
   Reset Spi_cs
   While Spi_sdo = 0
   Wend
End Sub

und vom Empfänger :

Code:

' Atmega8
' VDD -> VCC
' GND -> GND
' SDI -> MOSI (PB3, Pin 17)
' SDO -> MISO (PB4, Pin 18)
' SCK -> SCK (PB5, Pin 19)
' nSel -> SS (PB2, Pin 16)
' Fsk - > R 10k

' Atmega16
' VDD -> VCC
' GND -> GND
' SDI -> MOSI (PB5, Pin 6)
' SDO -> MISO (PB6, Pin 7)
' SCK -> SCK (PB7, Pin 8)
' nSel -> SS (PB4, Pin 5)
' Fsk - > R 10k

$regfile = "m16def.dat"
$crystal = 1000000                                                              '
$hwstack = 32
$swstack = 32
$framesize = 40

Declare Sub Rf12_init
Declare Function Rf12_trans(byval Wert As Word) As Word
Declare Sub Rf12_setfreq(byval Freq As Single)
Declare Sub Rf12_setbandwith(byval Bandwith As Byte , Byval Gain As Byte , Byval Drssi As Byte)
Declare Sub Rf12_setbaud(byval Rfbaud As Long)
Declare Sub Rf12_setpower(byval Outpower As Byte , Byval Fskmod As Byte)
Declare Sub Rf12_ready
Declare Sub Rf12_readys
Declare Sub Rf12_txdata(byval Maxchar As Byte)
Declare Sub Rf12_rxdata(byval Maxchar As Byte)
Declare Sub Senden
Declare Sub Empfangen

Const Rf12freq = 433.92
Const Rf12baud = 19200
Const Maxchar = 32

Config Lcdpin = Pin , Db4 = Porta.7 , Db5 = Porta.6 , Db6 = Porta.5 , Db7 = Porta.4 , E = Portc.1 , Rs = Portc.0
Config Lcd = 16 * 2 , Chipset = Dogm162v3

Cursor Off Noblink
Cls

' config the SPI in master mode.The clock must be a quarter of the slave cpu
' Hier ggf. den SoftSPI reinmachen
Config Spi = Hard , Interrupt = Off , Data Order = Msb , Master = Yes , Polarity = Low , Phase = 0 , Clockrate = 128 , Noss = 1
Config Portd.7 = Output                                                         ' LED zur Schleifenkontrolle


' werden benötigt für rf12_ready
Spi_cs Alias Portb.4                                                            ' SS-Pin
Config Spi_cs = Output
Spi_sdo Alias Pinb.6                                                            ' MISO-PIN
Set Spi_cs

' init the spi pins
Spiinit

Dim Count As Byte
Dim Temp As Word
Dim Rfdata(32) As Byte
Dim Text As String * Maxchar At Rfdata Overlay
Dim S As String * 10

Locate 1 , 1 : Lcd "Init RFM12      "
Waitms 100
Call Rf12_init                                                                  ' ein paar Register setzen (z.B. CLK auf 10MHz)
Locate 1 , 1 : Lcd "Set Frequenz    "
Waitms 100
Call Rf12_setfreq(rf12freq)                                                     ' Sende/Empfangsfrequenz auf 433,92MHz einstellen
Locate 1 , 1 : Lcd "Set Bandwith    "
Waitms 100
Call Rf12_setbandwith(4 , 1 , 4)                                                ' 200kHz Bandbreite, -6dB Verstärkung, DRSSI threshold: -79dBm
Locate 1 , 1 : Lcd "Set Baudrate    "
Waitms 100
Call Rf12_setbaud(rf12baud)                                                     ' 19200 baud
Locate 1 , 1 : Lcd "Set Tx-Power    "
Waitms 100
Call Rf12_setpower(0 , 6)                                                       ' 1mW Ausgangangsleistung, 120kHz Frequenzshift


Text = "Dies ist ein 433MHz Test !!!!!{013}{010}"

' Je nachdem ob Sender oder Empfänger die entsprechenden Zeilen aktivieren

Do                                                                              ' Ewigschleife
   Empfangen
   Pulseout Portd , 7 , 500                                                     ' Schleifenkontrolle
   Locate 1 , 1 : Lcd "Ready           "
   Wait 1
Loop

End

' ########################################################################
' ####### Tranceiverroutinen
' ########################################################################

Sub Empfangen
   Locate 1 , 1 : Lcd "Empfange        "
   Waitms 100
   Call Rf12_rxdata(maxchar)
   Locate 2 , 1
   For Count = 1 To Maxchar
      Lcd Chr(rfdata(count)) ;
      Waitms 100
   Next Count
End Sub

Sub Senden
   Locate 1 , 1 : Lcd "Sende           "
   Waitms 100
   Call Rf12_txdata(maxchar)
   Waitms 10
End Sub

' ########################################################################
' ###### Unterroutinen
' ########################################################################

Sub Rf12_init:
   Waitms 150
   Temp = Rf12_trans(&Hc0e0)
   Temp = Rf12_trans(&H80d7)
   Temp = Rf12_trans(&Hc2ab)
   Temp = Rf12_trans(&Hca81)
   Temp = Rf12_trans(&He000)
   Temp = Rf12_trans(&Hc800)
   Temp = Rf12_trans(&Hc4f7)
End Sub

Sub Rf12_setfreq(byval Freq As Single)
   Freq = Freq - 430.00
   Temp = Freq / 0.0025
   If Temp < 96 Then
      Temp = 96
   Elseif Temp > 3903 Then
      Temp = 3903
   End If
   Temp = Temp + &HA000
   Temp = Rf12_trans(temp)
End Sub

Sub Rf12_setbandwith(byval Bandwith As Byte , Byval Gain As Byte , Byval Drssi As Byte)
   Drssi = Drssi And 7
   Gain = Gain And 3
   Temp = Bandwith And 7
   Shift Temp , Left , 2
   Temp = Temp + Gain
   Shift Temp , Left , 3
   Temp = Temp + Drssi
   Temp = Temp + &H9400
   Temp = Rf12_trans(temp)
End Sub


Sub Rf12_setbaud(byval Rfbaud As Long )
   Local Ltemp As Long
   If Rfbaud < 663 Then Exit Sub
   If Rfbaud < 5400 Then
      Temp = 43104 / Rfbaud
      Temp = Temp + &HC680
   Else
      Ltemp = 344828 / Rfbaud
      Temp = Ltemp
      Temp = Temp + &HC600
   End If
   Decr Temp
   Temp = Rf12_trans(temp)
End Sub

Sub Rf12_setpower(byval Outpower As Byte , Byval Fskmod As Byte)
   Outpower = Outpower And 7
   Temp = Fskmod And 15
   Shift Temp , Left , 4
   Temp = Temp + Outpower
   Temp = Temp + &H9800
   Temp = Rf12_trans(temp)
End Sub

Sub Rf12_txdata(byval Maxchar As Byte)
   Temp = Rf12_trans(&H8238)
   Rf12_ready
   Temp = Rf12_trans(&Hb8aa)
   Rf12_ready
   Temp = Rf12_trans(&Hb8aa)
   Rf12_ready
   Temp = Rf12_trans(&Hb8aa)
   Rf12_ready
   Temp = Rf12_trans(&Hb82d)
   Rf12_ready
   Temp = Rf12_trans(&Hb8d4)
   Rf12_ready
   For Count = 1 To Maxchar
      Rf12_ready
      Temp = &HB800 + Rfdata(count)
      Temp = Rf12_trans(temp)
   Next Count
   Rf12_ready
   Temp = Rf12_trans(&H8208)
End Sub

Sub Rf12_rxdata(byval Maxchar As Byte)
   Temp = Rf12_trans(&H82c8)
   Temp = Rf12_trans(&Hca81)
   Temp = Rf12_trans(&Hca83)
   For Count = 1 To Maxchar
      Rf12_ready
      Temp = Rf12_trans(&Hb000)
      Rfdata(count) = Temp
   Next Count
   Temp = Rf12_trans(&H8208)
End Sub

Function Rf12_trans(byval Wert As Word) As Word
   Local Lowbyte As Byte
   Local Highbyte As Byte
   Lowbyte = Wert And 255
   Shift Wert , Right , 8
   Reset Spi_cs
   Highbyte = Spimove(wert)
   Lowbyte = Spimove(lowbyte)
   Set Spi_cs
   Temp = Highbyte * 256
   Temp = Temp + Lowbyte
   Rf12_trans = Temp
End Function

Sub Rf12_ready
   Reset Spi_cs
   While Spi_sdo = 0
   Wend
End Sub

Wie man unschwer erkennen kann, verwende ich für den Sender ein Atmega8L und für den Empfänger ein Atmega16L mit einem DOG-M Display zur Ausgabe. Ich benutze beides Mal den internen Quarz mit 1,0MHz. Liegts daran ? Senden tu ich eigentlich immer nur den Text ""Dies ist ein 433MHz Test !!!!!{013}{010}" jede Sekunde.

Das kann noch nicht mehr viel sein, jetzt hats bis hierher so gut geklappt

Thomas

Thema: Funkmodule und Atmels

Themen-Optionen

Thema durchsuchen

Anzeige

Baum-Darstellung

Lesezeichen

Lesezeichen

Berechtigungen