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Author Topic: have you info about SPI PROTOCOL?  (Read 4646 times)
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hamid9543
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« on: May 11, 2007, 07:46:02 19:46 »

hi.  can you help me about spi protocol in pic basicpro  or  mikrobasic.
(please explain with example)
thanks
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tavioman
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« Reply #1 on: May 11, 2007, 11:13:26 23:13 »

Would'nt you prefer C Language?
I can help you with examples in C.
Hardware SPI it's the best.
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iphone
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« Reply #2 on: May 12, 2007, 03:00:44 15:00 »

Would'nt you prefer C Language?
I can help you with examples in C.
Hardware SPI it's the best.

tavioman,

Please go ahead for the C tutorial on SPI..  Grin

Thanks
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hamid9543
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« Reply #3 on: May 12, 2007, 06:34:53 18:34 »

thanks for replay.but i need for pic basic or mikrobasic.
best regard
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robban
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« Reply #4 on: May 14, 2007, 08:21:12 08:21 »

What kind of device do You wish to talk to via the SPI protocol?
In MikroBasic (found elsewhere in this forum) You have a number of SPI libraries. Go ahead and look in the help file there...
« Last Edit: May 14, 2007, 08:22:54 08:22 by robban » Logged

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hamid9543
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« Reply #5 on: May 14, 2007, 04:49:59 16:49 »

hi robban.
i want to conect RFM01(rf moudole) to pic16f877.
rfm01  conec with spi protocol
can you help me?
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robban
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« Reply #6 on: May 15, 2007, 03:15:35 15:15 »

Here's come the link, including datasheet and programming example

http://rapidshare.com/files/31487929/RF01.rar.html
« Last Edit: May 15, 2007, 08:35:00 20:35 by robban » Logged

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hamid9543
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« Reply #7 on: May 16, 2007, 06:14:37 06:14 »

thanks robban.
it is a c compailer (i donot know )i need to mikribasic or picbaisc pro code.
can you help me or guide me for programing in mikrobasic or picbaisc pro?
thanks
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zeus
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« Reply #8 on: May 16, 2007, 06:36:17 06:36 »

You must use SPI in MODE1 and with 16 bit trasfer.

http://www.hoperf.com/pdf/RF01_code.pdf

also inc, you need to implement it to basic language.
I have used RF12. Problem with this RF modul is the tuning of our registers, and a well maked IT routin.

I don't used microbasic, but I think, that first U must init the port, then for write chip -select it, the spi_write first byte, then spi_write second byte then deselect chip.
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mombasa
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« Reply #9 on: May 16, 2007, 10:42:54 10:42 »

For my rf module 2.4 Ghz. type  XTR-CYP-2.4 AUREL that has a SPI protocol, I used Pic Basic Pro Shiftin and Shiftout statements and it works fine. You can try.

mombasa
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hamid9543
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« Reply #10 on: May 16, 2007, 05:07:05 17:07 »


hi mombaso.can you explain what do you do?
thanks
best regard
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hamed
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« Reply #11 on: January 12, 2008, 04:43:24 16:43 »

Hi
I'm using a pic 16F876A to send data via SPI protocol and rfm 01 and 02 with PIC Basic PRo , but can't work with this modules ,
please ...
 Smiley
« Last Edit: January 13, 2008, 07:08:46 07:08 by hamed » Logged
Cynetron
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« Reply #12 on: February 02, 2008, 12:12:31 00:12 »

you can use included spi or you can write a spi protocol as this address but if you need speed you should use included spi

http://www.picbasic.org/forum/showthread.php?t=5368
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mcb58
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« Reply #13 on: February 09, 2008, 07:52:38 19:52 »

hi ;
Here is the sample picbasic code for using SPI eeproms

Write To the first 11 locations of a MICROCHIP 25LC640 SPI serial eeprom
' Then Read the 11 locations back and display them on a serial LCD
' The configuration is 8192 words x 8-bits

' To WRITE to the eeprom:-
' The 16-bit address is loaded into the variable "ADDR"
' The byte to write is loaded into the variable "E_BYTEOUT"
' And a call is made to the subroutine "EWRITE"

' To READ from the eeprom:-
' The 16-bit address is loaded into the variable "ADDR"
' And a call is made to the subroutine "EREAD"
' The byte at the specified address is returned in the variable "E_BYTEIN"

   Include "Modedefs.Bas"

' ** Setup the Crystal Frequency, in Mhz **

   Define    OSC      4      ' Set Xtal Frequency

' ** Set Debug Defines **

   Define   DEBUG_REG   PORTA      ' Debug PORT ?
   Define   DEBUG_BIT   0      ' *** Debug pin Bit ? ***
   Define   DEBUG_BAUD   9600      ' *** Debug Baud Rate ***
   Define   DEBUG_MODE   1      ' Set Serial Mode 1=Inverted
   Define   DEBUG_PACING   300      ' Delay 'in uS' between characters sent

' ** Define LCD Constants **

   I      Con   254      ' Control Byte
   Clr      Con   1      ' Clear the display
   Line1      Con   128      ' Point to beginning of line 1
   Line2      Con   192      ' Point to beginning of line 2
   Line3      Con   148      ' Point to beginning of line 3
   Line4      Con   212      ' Point to beginning of line 4

' ** Define the Pin assignments **
   CS         Var     PORTB.0         ' Chip select pin
   SCK        Var     PORTB.1         ' Clock pin
   SI         Var     PORTB.2         ' Data in pin
   SO         Var     PORTB.2         ' Data out pin

' ** Declare the Variables **
   Addr       var     Word            ' Memory address within the eeprom (0-511)
   E_Byteout   Var   Byte      ' Byte to be placed into the eeprom
   E_Bytein   Var   Byte      ' Byte read from the eeprom

' ** Define the eeprom's op-codes **
   WRSR      Con   1      ' Write to STATUS REGISTER op-code
   EWR      Con   2      ' WRITE op-code
   ERD      Con   3      ' READ op-code
   WRDI      Con   4      ' DISABLE WRITES op-code
   RDSR      Con   5      ' Read the STATUS REGISTER op-code
   EWEN      Con   6      ' ENABLE WRITES op-code

' ** THE MAIN PROGRAM STARTS HERE **

' Write the string, "HELLO WORLD" into the first 11 address's of the Eeprom

        For Addr=0 To 10                   ' Create a loop of 11
   LookUp Addr,["H","E","L","L","O"," ","W","O","R","L","D"],E_ByteOut' Build up the string
   GoSub EWrite            ' Write the byte to the Eeprom
        Next               ' Close the Loop

' Read the first 11 address's within the Eeprom and display them on the LCD

Again:  Debug I,Clr:Pause 30         ' Clear the LCD
   Pause 500            ' Pause for drama
   For Addr=0 To 10              ' Create a loop of 11
   GoSub ERead            ' Read the byte from the Eeprom
        Debug E_ByteIn           ' Display the characters read in from the eeprom
   Pause 300            ' Pause between characters being displayed
        Next               ' Close the loop
        GoTo Again            ' Do it forever

' Read a single byte from the Eeprom
' The address is held in the variable "ADDR"
' The byte read is returned in the variable "E_BYTEIN"
ERead:    Low CS                             ' Enable the eeprom
        Shiftout SI,SCK,msbfirst,[ERD,Addr.HighByte,Addr.LowByte]' Send READ COMMAND and address
        Shiftin SO,SCK,msbpre,[E_Bytein]      ' Read data
        High CS                             ' Disable the eeprom
        Return

' Write a single byte to the Eeprom
' The address is held in the variable "ADDR"
' The byte to be written is held in the variable "E_BYTEOUT"
EWrite: Low CS                               ' Enable the eeprom
        Shiftout SI,SCK,msbfirst,[EWEN]          ' Send WRITE ENABLE command
        High CS                             ' Disable the eeprom, to execute the command
        Low CS                             ' Re-enable the eeprom
        Shiftout SI,SCK,msbfirst,[EWR,Addr.HighByte,Addr.LowByte,E_Byteout]' Send address and data
        High CS                             ' Disable the eeprom
   Pause 5                         ' Allow the eeprom to allocate the byte
        Return
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