ja proponowałbym jednak RFM12B, będziesz miał komunikację dwukierunkową. Da Ci to możliwość nie tylko sterowania robotem, ale także odbierania informacji zwrotnych. tu masz trochę info na ten temat, z pomocą których udało mi się uruchomić te transcievery: http://blog.strobotics.com.au/2008/01/08/rfm12-tutorial-part1/ http://loee.jottit.com/rfm12b_and_avr_-_quick_start http://www.embedds.com/interfacing-rfm12-transceiver-module/ http://www.elektroda.pl/rtvforum/topic890223.html jeden z załączników, to datasheet do trc101 - pomimo, że jest to inny ukłąd, wszystko jest tak samo jak w RFM12B, więc można(a nawet trzeba) z niego skorzystać.
RF12B V1.2
RF12B programming guide
1．
Brief description
RF12B is a low cost FSK transceiver IC witch integrated all RF functions in a
single chip. It only need a MCU, a crystal, a decouple capacitor and antenna to
build a hi reliable FSK transceiver system. The operation frequency can cover 400
to 1000MHz.
RF12B supports a command interface to setup frequency, deviation, output power
and also data rate. No need any hardware adjustment when using in frequency-hopping
applications
RF12B can be used in applications such as remote control toys, wireless alarm,
wireless sensor, wireless keyboard/mouse, home-automation and wireless data
collection.
2．
Commands
1． Timing diagram
2． Configuration Setting Command
bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
POR
1
0
0
0
0
0
0
0
el
ef
b1
b0
x3
x2
x1
x0
8008h
e l: Enable TX register
e f: Enable RX FIFO buffer
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1
RF12B V1.2
b1..b0: select band
B1
b0
band[MHz]
0
0
Reserved
0
1
433
1
0
868
1
1
915
x3..x0: select crystal load capacitor
X3
x2
x1
x0
load capacitor [pF]
0
0
0
0
8.5
0
0
0
1
9.0
0
0
1
0
9.5
0
0
1
1
10.0
……
……
1
1
1
0
15.5
1
1
1
1
16.0
3． Power Management Command
bit 15 14 13 12 11
10
9 8
1
0
0
0
0
0
1
7
6
5
4
3
2
1
0
POR
er
ebb
et
es
ex
eb
ew
dc
8208h
8
7
6
5
4
3
2
1
0
POR
f8
f7
f6
f5
f4
f3
f2
f1
f0
A680h
0
er： Enable receiver
ebb：Enable base band block
et： Enable transmitter
es： Enable synthesizer
ex： Enable crystal oscillator
eb： Enable low battery detector
ew： Enable wake-up timer
dc： Disable clock output of CLK pin
4． Frequency Setting Command
bit 15 14 13 12 11
10
9
1
0
1
0
f11
f10
f9
f11..f0: Set operation frequency:
433band: Fc=430+F*0.0025 MHz
868band: Fc=860+F*0.0050 MHz
915band: Fc=900+F*0.0075 MHz
Fc is carrier frequency and F is the frequency parameter. 36≤F≤3903
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2
RF12B V1.2
5． Data Rate Command
bit 15 14 13 12 11
10
1
1
0
0
0
9
7
6
5
4
3
2
1
0
POR
1
1
8
0
cs
r6
r5
r4
r3
r2
r1
r0
C623h
r6..r0: Set data rate:
BR=10000000/29/（R+1）/（1+cs*7）
6． Receiver Control Command
bit
15
14
13
12
11
10
9
1
0
0
1
0
P16 d1
8
7
6
5
4
3
2
1
0
POR
d0
i2
i1
i0
g1
g0
r2
r1
r0
9080h
P16: select function of pin16
P16
0
Interrupt input
1
VDI output
i2..i0:select baseband bandwidth
i2
i1
i0
Baseband Bandwidth [kHz]
0
0
0
reserved
0
0
1
400
0
1
0
340
0
1
1
270
1
0
0
200
1
0
1
134
1
1
0
67
1
1
1
reserved
d1..d0: select VDI response time
d1
d0
Response
0
0
Fast
0
1
Medium
1
0
Slow
1
1
Always on
g1..g0: select LNA gain
g1
g0
LNA gain (dBm)
0
0
0
0
1
-6
1
0
-14
1
1
-20
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3
RF12B V1.2
r2..r0: select DRSSI threshold
r2
r1
r0
RSSIsetth [dBm]
0
0
0
-103
0
0
1
-97
0
1
0
-91
0
1
1
-85
1
0
0
-79
1
0
1
-73
1
1
0
Reserved
1
0
1
Reserved
The actual DRSSI threshold is related to LNA setup:
RSSIth = RSSIsetth + GLNA.
7． Data Filter Command
bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
POR
1
1
0
0
0
0
1
0
al
ml
1
s
1
f2
f1
f0
C22Ch
al: Enable clock recovery auto-lock
ml: Enable clock recovery fast mode
s: select data filter type
s
Filter type
0
Digital filter
1
Analog RC filter
f1..f0: Set DQD threshold
8． FIFO and Reset Mode Command
bit 15 14 13 12 11
10
9
8
1
1
0
0
1
0
1
0
7
6
5
4
3
2
1
0
POR
f3
f2
f1
f0
sp
al
ff
dr
CA80h
f3..f0: Set FIFO interrupt level
sp: Select the length of the synchron pattern:
sp
0
1
Byte1
2Dh
Not used
Byte0 (POR)
D4h
D4h
Synchron Pattern (Byte1+Byte0)
2DD4h
D4h
al: select FIFO fill start condition
al
condition
0
Sync-word
1
Always
ff: Enable FIFO fill
dr： Disable hi sensitivity reset mode
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4
RF12B V1.2
9． Synchron pattern Command
bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
POR
1
1
0
0
1
1
1
0
b7
b6
b5
b4
b3
b2
b1
b0
CED4h
This command is used to reprogram the synchronic pattern;
10．
Receiver FIFO Read Command
bit 15 14 13 12 11 10 9 8 7
6
1
0
1
1
0
0
0
0
0
5
3
2
1
0
POR
0
0
4
0
0
0
0
0
B000h
This command is used to read FIFO data when FFIT interrupt generated. FIFO data
output starts at 8th SCK period.
11．
bit
AFC Command
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
POR
1
1
0
0
0
1
0
0
a1
a0
rl1
rl0
st
fi
oe
en
C4F7h
a1..a0: select AFC auto-mode：
a1
a0
0
0
Controlled by MCU
0
1
Run once at power on
1
0
Keep offset when VDI hi
1
1
Keeps independently from VDI
rl1..rl0: select range limit
r1
range（fres）
0
0
No restriction
0
1
+15/-16
1
0
+7/-8
1
st:
fi:
oe:
en:
r0
1
+3-4
fres
315，433band: 2.5kHz
868band: 5kHz
915band: 7.5kHz
st goes hi will store offset into output register
Enable AFC hi accuracy mode
Enable AFC output register
Enable AFC funcition
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5
RF12B V1.2
12．
bit
TX Configuration Control Command
15
14
13
12
11
10
9
8
7
1
0
0
1
1
0
0
mp m3
6
5
4
3
2
1
0
POR
m2
m1
m0
0
p2
p1
p0
9800h
m: select modulation polarity
m2..m0: select frequency deviation:
m3
m2
m1
m0
frequency deviation [kHz]
0
0
0
0
15
0
0
0
1
30
0
0
1
0
45
0
0
1
1
60
0
1
0
0
75
0
1
0
1
90
0
1
1
0
105
0
1
1
1
120
1
0
0
0
135
1
0
0
1
150
1
0
1
0
165
1
0
1
1
180
1
1
0
0
195
1
1
0
1
210
1
1
1
0
225
1
1
1
1
240
p2..p0: select output power
p2
p1
p0
Output power[dBm]
0
0
0
0
0
0
1
-3
0
1
0
-6
0
1
1
-9
1
0
0
-12
1
0
1
-15
1
1
0
-18
1
0
1
-21
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6
RF12B V1.2
13．
bit
PLL Setting Command
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
POR
1
1
0
0
1
1
0
0
0
ob1
ob0
1
ddy
ddit
1
bw0
CC77h
Note1： For A0 version, the default value is CC67, it is necessary to use CC77 instead of CC67 in the
application program.,
NOTE2: For A1 version, you can use the default value CC77.
ob1-ob0: Microcontroller output clock buffer rise and fall time control.
ob1
ob0
Selected uC CLK frequency
0
0
5 or 10 MHz (recommended)
0
1
3.3 MHz
1
X
2.5 MHz or less
ddy: phase detector delay enable.
ddi: disables the dithering in the PLL loop.
bw1-bw0: select PLL bandwidth
bw0
Max bit rate [kbps]
Phase noise at 1MHz offset [dBc/Hz]
0
86.2
-107
1
256
-102
14．
Transmitter Register Write Command
15 14 13 12 11 10 9 8 7
6
5
4
3
2
1
0
POR
1
bit
t4
t3
t2
t1
t0
B8AAh
0
1
1
1
0
0
0
t7
t6
t5
This command is use to write a data byte to RF12 and then RF12 transmit it
15．
Wake-Up Timer Command
bit 15 14 13 12 11 10 9 8 7
1
1
1
r4
r3
r2
r1
r0
6
5
4
3
2
1
0
POR
m7
m6
m5
m4
m3
m2
m1
m0
E196h
The wake-up period is determined by:
R
Twake-up = M * 2 [ms]
16．
bit
Low Duty-Cycle Command
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
POR
1
1
0
0
1
0
0
0
d6
d5
d4
d3
d2
d1
d0
en
C8OEh
d6..d0: Set duty cycle
D.C.= (D * 2 +1) / M *100%
en：Enable low duty cycle mode
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7
RF12B V1.2
17．
bit
Low Battery Detector and Microcontroller Clock Divider Command
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
POR
1
1
0
0
0
0
0
0
d2
d1
d0
0
v3
v2
v1
v0
C000h
d2..d0: select frequency of CLK pin
d2
d1
d0
Clock frequency[MHz]
0
0
0
1
0
0
1
1.25
0
1
0
1.66
0
1
1
2
1
0
0
2.5
1
0
1
3.33
1
1
0
5
1
1
1
10
CLK signal is derive form crystal oscillator and it can be applied to MCU clock in to save
a second crystal.
If not used, please set bit “dc” to disable CLK output
To integrate the load capacitor internal can not only save cost, but also adjust reference
frequency by software
v3..v0: Set threshold voltage of Low battery detector：
Vlb=2.2+V*0.1 [V]
18．
Status Read Command
bit 15 14 13 12 11
10
9
0
x
x
x
x
x
x
8
7
6
5
4
3
2
1
0
POR
x
x
x
x
x
x
x
x
x
-
This command starts with a 0 and be used to read internal status register
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8
RF12B V1.2
3．
Demo flow diagram
Transmitter:
DEMO
Init RF12B
Open TX
Send data
Close TX
Send data
Wait nIRQ low
Write a byte
Package
send over?
N
Y
return
Note: Initialize RF12B and open transmitter, RF12B will transmit a byte and pull nIRQ low
when transmit over, then MCU can write next byte to transmit
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9
RF12B V1.2
Receiver:
DEMO
Init RF12B
Open RX
Receive data
N
Check
pass?
Y
Indicate receive
Receive data
Wait nIRQ low
Read FIFO data
Data recive
over?
N
Y
return
Note: After RF12B initialization, Open FIFO receive mode and wait nIRQ low, only then MCU
can read received and stored in FIFO data. For next package receive, please reset FIFO.
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10
RF12B V1.2
4．
（for PIC microcontroller）
RF12 transmitter demo:
/**********************************************************
copyright (c) 2010
Title:
RFM12B transmitter simple example based on PIC C
Current version:
v1.1
Function:
Package send Demo
Processor
PIC16F73 DIP-28
Clock:
10MHz Crystal
Operate frequency: 434MHz
Data rate:
4.8kbps
Package size:
23byte
Author:
Simon.Yang
Company:
Hope microelectronic Co.,Ltd.
Contact:
+86-0755-82973805
E-MAIL:
faerf@hoperf.com
Date:
2010-06-28
********************************************************/
#include " pic.h "
typedef unsigned char uchar;
typedef unsigned int uint;
#define
#define
#define
#define
#define
SDI
SDO
SCK
nSEL
LED
RB7
RB6
RB5
RB4
RA0
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11
RF12B V1.2
#define
#define
#define
#define
#define
void
void
void
void
void
void
void
SDI_OUT()
SDO_IN()
SCK_OUT()
nSEL_OUT()
LED_OUT()
TRISB7=0
TRISB6=1
TRISB5=0
TRISB4=0
TRISA0=0
Init_RF12(void);
Write0( void );
Write1( void );
WriteCMD( uint CMD );
DelayUs( uint us );
DelayMs(uint ms);
WriteFSKbyte( uchar DATA );
__CONFIG(0x3FF2);
void Init_RF12(void)
{
LED_OUT();
LED=0;
nSEL_OUT();
SDI_OUT();
SDO_IN();
SCK_OUT();
nSEL=1;
SDI=1;
SCK=0;
WriteCMD(0x80D8);//enable register,433MHz,12.5pF
WriteCMD(0x8208);//Turn on crystal,!PA
WriteCMD(0xA640);//
WriteCMD(0xC647);//
WriteCMD(0XCC77);//
WriteCMD(0x94A0);//VDI,FAST,134kHz,0dBm,-103dBm
WriteCMD(0xC2AC);
WriteCMD(0xCA80);
WriteCMD(0xCA83);//FIFO8,SYNC,
WriteCMD(0xC49B);
WriteCMD(0x9850);//!mp,9810=30kHz,MAX OUT
WriteCMD(0xE000);//NOT USE
WriteCMD(0xC80E);//NOT USE
WriteCMD(0xC000);//1.0MHz,2.2V
}
void main()
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12
RF12B V1.2
{
uint ChkSum;
Init_RF12();
while(1)
{
ChkSum=0;
WriteCMD(0x8228);
DelayUs( 4 );
WriteCMD(0x8238);
NOP();
NOP();
WriteFSKbyte( 0xAA
WriteFSKbyte( 0xAA
WriteFSKbyte( 0xAA
WriteFSKbyte( 0x2D
WriteFSKbyte( 0xD4
WriteFSKbyte(
ChkSum+=0x30;
WriteFSKbyte(
ChkSum+=0x31;
WriteFSKbyte(
ChkSum+=0x32;
WriteFSKbyte(
ChkSum+=0x33;
WriteFSKbyte(
ChkSum+=0x34;
WriteFSKbyte(
ChkSum+=0x35;
WriteFSKbyte(
ChkSum+=0x36;
WriteFSKbyte(
ChkSum+=0x37;
WriteFSKbyte(
ChkSum+=0x38;
WriteFSKbyte(
ChkSum+=0x39;
WriteFSKbyte(
ChkSum+=0x3A;
WriteFSKbyte(
ChkSum+=0x3B;
WriteFSKbyte(
ChkSum+=0x3C;
WriteFSKbyte(
//OPEN PA
);
);
);
);
);
0x30 );//DATA0
0x31 );//DATA1
0x32 );
0x33 );
0x34 );
0x35 );
0x36 );
0x37 );
0x38 );
0x39 );
0x3A );
0x3B );
0x3C );
0x3D );
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13
RF12B V1.2
ChkSum+=0x3D;
WriteFSKbyte( 0x3E );
ChkSum+=0x3E;
WriteFSKbyte( 0x3F );//DATA15
ChkSum+=0x3F;
ChkSum & =0x0FF;
WriteFSKbyte( ChkSum );
WriteFSKbyte( 0xAA );
WriteCMD( 0x8208 );
//CLOSE PA
WriteCMD( 0x8200 );
//Receive end, enter sleep
LED=1;
DelayMs(100);
LED=0;
DelayMs(1000);
}
}
void Write0( void )
{
SCK=0;
NOP();
SDI=0;
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
SCK=1;
NOP();
}
void Write1( void )
{
SCK=0;
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14
RF12B V1.2
NOP();
SDI=1;
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
SCK=1;
NOP();
}
void WriteCMD( uint CMD )
{
uchar n=16;
SCK=0;
nSEL=0;
while(n--)
{
if(CMD & 0x8000)
Write1();
else
Write0();
CMD=CMD & lt; & lt; 1;
}
SCK=0;
nSEL=1;
}
void WriteFSKbyte( uchar DATA )
{
uchar RGIT=0;
uint temp=0xB800;
temp|=DATA;
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15
RF12B V1.2
Loop: SCK=0;
nSEL=0;
SDI=0;
SCK=1;
if(SDO)
{
RGIT=1;
}
else
{
RGIT=0;
}
SCK=0;
SDI=1;
nSEL=1;
if(RGIT==0)
{
goto Loop;
}
else
{
RGIT=0;
WriteCMD(temp);
}
}
//Polling SDO
void DelayUs( uint us )
{
uint i;
while( us-- )
{
i=2;
while( i-- )
{
NOP();
}
}
}
void DelayMs(uint ms)
{
uchar i;
while(ms--)
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16
RF12B V1.2
{
i=35;
while(i--)
{
DelayUs(1);
}
}
}
RF12 receiver demo:
/**********************************************************
copyright (c) 2010
Title:
RFM12B recieve simple example based on PIC C
Current version:
v1.1
Function:
Package send Demo
Processor
PIC16F73 DIP-28
Clock:
10MHz Crystal
Operate frequency: 434MHz
Data rate:
4.8kbps
Package size:
23byte
Author:
Simon.Yang
Company:
Hope microelectronic Co.,Ltd.
Contact:
+86-0755-82973805
E-MAIL:
faerf@hoperf.com
Date:
2010-06-28
********************************************************/
#include " pic.h "
typedef unsigned char uchar;
typedef unsigned int uint;
#define
#define
#define
#define
#define
#define
#define
#define
#define
#define
#define
SDI
SDO
SCK
nSEL
nIRQ
LED
LED_OUT()
nIRQ_IN()
SDI_OUT()
SDO_IN()
SCK_OUT()
RB7
RB6
RB5
RB4
RB3
RA0
TRISA0=0
TRISB3=1
TRISB7=0
TRISB6=1
TRISB5=0
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RF12B V1.2
#define
nSEL_OUT()
TRISB4=0
void Init_RF12(void);
void Write0( void );
void Write1( void );
void WriteCMD( uint CMD );
uchar RF12_RDFIFO(void);
void Delayus( uint us );
__CONFIG(0x3FF2);
bank1 uchar RF_RXBUF[19];
void Init_RF12(void)
{
LED_OUT();
nSEL_OUT();
SDI_OUT();
SDO_IN();
SCK_OUT();
nIRQ_IN();
nSEL=1;
SDI=1;
SCK=0;
SDO=0;
LED=0;
WriteCMD(0x80D8);//enable register,433MHz,12.5pF
WriteCMD(0x82D8);//enable receive,!PA
WriteCMD(0xA640);//
WriteCMD(0xC647);//
WriteCMD(0x94A0);//VDI,FAST,134kHz,0dBm,-103dBm
WriteCMD(0xC2AC);
WriteCMD(0XCC77);//
WriteCMD(0xCA80);
WriteCMD(0xCA83);//FIFO8,SYNC,
WriteCMD(0xC49B);
WriteCMD(0x9850);//!mp,9810=30kHz,MAX OUT
WriteCMD(0xE000);//NOT USE
WriteCMD(0xC800);//NOT USE
WriteCMD(0xC000);//1.0MHz,2.2V
}
void main()
{
uchar i=0,j=0;
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RF12B V1.2
uint
CheckSum;
Init_RF12();
while(1)
{
while(!nIRQ)
{
RF_RXBUF[i++]=RF12_RDFIFO();
if(i==17)
{
i=0;
WriteCMD(0xCA80);
WriteCMD(0xCA83);
//reset FIFO and read to receive next Byte
CheckSum=0;
for(j=0;j & lt; 16;j++)
CheckSum+=RF_RXBUF[j]; //add 0x30-----0x3F
CheckSum & =0x0FF;
if(CheckSum==RF_RXBUF[16])
{
LED=1;
}
Delayus(1);
LED=0;
}
}
}
}
void Write0( void )
{
SCK=0;
NOP();
SDI=0;
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
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RF12B V1.2
NOP();
NOP();
NOP();
NOP();
NOP();
SCK=1;
NOP();
}
void Write1( void )
{
SCK=0;
NOP();
SDI=1;
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
NOP();
SCK=1;
NOP();
}
void WriteCMD( uint CMD )
{
uchar n=16;
SCK=0;
nSEL=0;
while(n--)
{
if(CMD & 0x8000)
Write1();
else
Write0();
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RF12B V1.2
CMD=CMD & lt; & lt; 1;
}
SCK=0;
nSEL=1;
}
uchar RF12_RDFIFO(void)
{
uchar i,Result;
SCK=0;
SDI=0;
nSEL=0;
for(i=0;i & lt; 16;i++)
{
//skip status bits
SCK=1;
NOP();
NOP();
SCK=0;
NOP();
NOP();
}
Result=0;
for(i=0;i & lt; 8;i++)
{
//read fifo data byte
Result=Result & lt; & lt; 1;
if(SDO)
{
Result|=1;
}
SCK=1;
NOP();
NOP();
SCK=0;
NOP();
NOP();
}
nSEL=1;
return(Result);
}
void Delayus( uint us )
{
uint i;
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RF12B V1.2
while( us-- )
{
i=1000;
while( i-- )
{
NOP();
}
}
}
This document may contain preliminary information and is subject to
change by Hope Microelectronics without notice. Hope Microelectronics
assumes no responsibility or liability for any use of the information
contained herein. Nothing in this document shall operate as an express
HOPE MICROELECTRONICS CO.,LTD
or implied license or indemnity under the intellectual property rights of
Add:4/F, Block B3, East Industrial Area,
Hope Microelectronics or third parties. The products described in this
Huaqiaocheng, Shenzhen, Guangdong,
document are not intended for use in implantation or other direct life
China
support applications where malfunction may result in the direct physical
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harm or injury to persons. NO WARRANTIES OF ANY KIND,
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MECHANTABILITY OR FITNESS FOR A ARTICULAR PURPOSE, ARE
OFFERED IN THIS DOCUMENT.
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©2006, HOPE MICROELECTRONICS CO.,LTD. All rights reserved.
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22
RF12B V1.2
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