?? rf.asm
字號:
;------------------------------------------------------------------------------+
; |
; Module RF |
; |
;------------------------------------------------------------------------------+
; |
; RF.asm |
; Jan Ornter |
; DATE: 11-9-2005 |
; VER.: 1.0 |
; This class provides access to the optionally RF-Interface. |
; It will transmit a header (see below) and pulse with modulated data (see |
; below). |
; |
; |
; Transmission frame |
; |< Header >|< Data |
; >| |
; |< Init >|< Gap >|< High >|< Low >| |
; _________ _____________ _ |
; ___| |_______| |____________| |
; XXXXXXXXXXXXXXXXXXXXXXXXX____ |
;------------------------------------------------------------------------------+
#include "Project.inc"
#include "Delay.inc"
#ifndef RF.PIN
#define RF.PIN 5 ; RF Modulation Output
#define RF.PORT PORTC
#endif
RF_ovr udata_ovr
Parity res 1
RF.COUNTER res 1
RF.Byte_Counter res 1
RF.Data_REG res 1
ifndef RF.T_HDR_INIT
;------------------------------------------------------------------------------+
; |
; Constant RF.T_HDR_INIT |
; |
;------------------------------------------------------------------------------+
; |
; The initial high time of the header in micro seconds. |
; |
; |
; Transmission frame |
; |< T_HDR_INIT >|< T_HDR_GAP >|< T_HDR_HIGH >|< T_HDR_LOW |
; >| |
; _______________ ___________________ |
; _ |
; ___| |_____________| |
; |__________________| |
;------------------------------------------------------------------------------+
#define RF.T_HDR_INIT .4100
endif
ifndef RF.T_HDR_GAP
;------------------------------------------------------------------------------+
; |
; Constant RF.T_HDR_GAP |
; |
;------------------------------------------------------------------------------+
; |
; The time of the gap between the initial high time and the filter-sequence.|
; |
; |
;------------------------------------------------------------------------------+
#define RF.T_HDR_GAP .550
endif
ifndef RF.T_HDR_HIGH
;------------------------------------------------------------------------------+
; |
; Constant RF.T_HDR_HIGH |
; |
;------------------------------------------------------------------------------+
; |
; The high time of the filter-sequence. |
; |
; |
;------------------------------------------------------------------------------+
#define RF.T_HDR_HIGH .2100
endif
ifndef RF.T_HDR_LOW
;------------------------------------------------------------------------------+
; |
; Constant RF.T_HDR_LOW |
; |
;------------------------------------------------------------------------------+
; |
; The low time of the filter-sequence. |
; |
; |
;------------------------------------------------------------------------------+
#define RF.T_HDR_LOW .2100
endif
ifndef RF.T_STEP
;------------------------------------------------------------------------------+
; |
; Constant RF.T_STEP |
; |
;------------------------------------------------------------------------------+
; |
; This time adjusts the bitrate of the data transmission. |
; |
; |
; A pwm coded '1' |
; |< T_STEP >|< 2*T_STEP >| |
; _____________ |
; _| |___________________________| |
;------------------------------------------------------------------------------+
#define RF.T_STEP .250
endif
global RF.Send_Header, RF.Send_Data, RF.SendBuffer
code
;------------------------------------------------------------------------------+
; |
; RF.SendBuffer( w FSR ) |
; |
;------------------------------------------------------------------------------+
; |
; This function sends a complete data buffer to the air. |
; The Buffer has to be on Bank0 or Bank1 |
; |
; |
; Parameters: |
; w - The amount of bytes to be sent |
; FSR - The start address of the buffer |
; |
; |
; |
; Stacklevel: 3 |
; |
; |
; Example: |
; movlw AFE.ConfData |
; movwf FSR |
; movlw 0x07 |
; call RF.SendBuffer |
; |
; |
; Description: |
; This sends 7 bytes of the buffer "AFE.ConfMap" to the air |
; |
;------------------------------------------------------------------------------+
RF.SendBuffer
banksel RF.Byte_Counter
movwf RF.Byte_Counter
call RF.Send_Header
RF.SendBuffer.loop
bankisel PORTA
movf INDF,w
call RF.Send_Data
incf FSR,f
banksel RF.Byte_Counter
decfsz RF.Byte_Counter,f
goto RF.SendBuffer.loop
return
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