Subversion Repositories – MLAB

/Designs/MRAKOMER2/SW/Ondrejov/ @ 1579   →   /Designs/MRAKOMER2/SW/Ondrejov/ @ 1580

Compare Path:	Rev
With Path:	Rev

/Designs/MRAKOMER2/SW/Ondrejov/irmrak.PJT
1,8 → 1,9
[PROJECT]
Target=irmrak.HEX
Target=irmrak.hex
Development_Mode=
Processor=0x688F
ToolSuite=CCS
Processor_Text=PIC16F88
[Directories]
Include=C:\Program Files\PICC\devices\;C:\Program Files\PICC\drivers\;
10,7 → 11,7
LinkerScript=
[Target Data]
FileList=C:\PIC\IRmrakO\irmrak.c
FileList=C:\Dokumenty\MLAB\Designs\MRAKOMER2\SW\Ondrejov\irmrak.c
BuildTool=C-COMPILER
OptionString=+FM
AdditionalOptionString=
28,16 → 29,16
1=irmrak.c
[Windows]
0=0000 irmrak.c 0 0 796 451 3 0
0=0000 %S 0 0 796 451 3 0
[Opened Files]
1=C:\PIC\IRmrakO\irmrak.c
2=
3=C:\Program Files\PICC\devices\16F88.h
4=C:\Program Files\PICC\drivers\string.h
5=C:\Program Files\PICC\drivers\stddef.h
6=C:\Program Files\PICC\drivers\ctype.h
7=C:\PIC\IRmrakTX\AX25.c
1=irmrak.c
2=irmrak.h
3=..\..\..\..\..\..\Program Files\PICC\devices\16F88.h
4=..\..\..\..\..\..\Program Files\PICC\drivers\string.h
5=..\..\..\..\..\..\Program Files\PICC\drivers\stddef.h
6=..\..\..\..\..\..\Program Files\PICC\drivers\ctype.h
7=
8=
[debugperif]
selected=Analog/Digital Conv
54,6 → 55,23
[debugexpr]
expr=
sideeffects=0
[defines]
enabled=0
D1=
V1=
[fileformats]
forcecoff=0
debug=4
error=2
object=0
list=0
scratch=0
sta=1
tre=1
allerrors=1
allwarnings=1
stayupne=3
stayupoe=0
[Units]
Count=1
1=C:\PIC\IRmrakO\irmrak.c (main)
1=irmrak (main)

/Designs/MRAKOMER2/SW/Ondrejov/motor/irmrak.PJT
0,0 → 1,44
[PROJECT]
Target=irmrak.HEX
Development_Mode=2
Processor=0x688F
Processor_Text=PIC16F88
ToolSuite=CCS
[Directories]
Include=
Library=
LinkerScript=
[Target Data]
FileList=C:\Dokumenty\MLAB\Designs\MRAKOMER2\SW\Ondrejov\motor\irmrak.c
BuildTool=C-COMPILER
OptionString=+FM
AdditionalOptionString=
BuildRequired=1
[irmrak.c]
Type=4
Path=
FileList=
BuildTool=
OptionString=
AdditionalOptionString=
[mru-list]
1=irmrak.c
[Windows]
0=0000 irmrak.c 0 0 796 451 3 0
[Opened Files]
1=irmrak.c
2=irmrak.h
3=..\..\..\..\..\..\..\Program Files\PICC\devices\16F88.h
4=..\..\..\..\..\..\..\Program Files\PICC\drivers\string.h
5=..\..\..\..\..\..\..\Program Files\PICC\drivers\stddef.h
6=..\..\..\..\..\..\..\Program Files\PICC\drivers\ctype.h
7=
[Units]
Count=1
1=irmrak (main)

/Designs/MRAKOMER2/SW/Ondrejov/motor/irmrak.c
0,0 → 1,157
//******** Mrakomer2 - stepper motor control *****************
#define VERSION "3.0" // Special version for BART
#define ID "$Id: irmrak.c 420 2006-12-29 21:43:11Z kakl $"
//************************************************************
#include "irmrak.h"
#include <string.h>
char VER[4]=VERSION;
char REV[50]=ID;
#bit CREN = 0x18.4 // USART registers
#bit SPEN = 0x18.7
#bit OERR = 0x18.1
#bit FERR = 0x18.2
#define HALL PIN_A4 // Hallova sonda pro zjisteni natoceni dolu
// vykonovy FET je na RB3 (vystup PWM)
int port; // stav brany B pro krokove motory
int j; // pro synchronisaci fazi
unsigned int8 uhel; // prijaty znak
unsigned int8 i; // pro cyklus for
// --- Kroky krokoveho motoru ---
void krok(int n)
{
while((n--)>0)
{
if (1==(j&1)) {port^=0b11000000;} else {port^=0b00110000;};
output_B(port);
delay_ms(20); // Nutno nastavit podle dynamiky systemu.
j++;
}
}
// --- Dojet dolu magnetem na cidlo ---
void dolu()
{
unsigned int8 err; // pocitadlo pro zjisteni zaseknuti otaceni
err=0;
while(!input(HALL)) // otoceni trubky dolu az na hall
{
krok(1);
err++;
if(40==err) // do 40-ti kroku by se melo podarit otocit dolu
{
output_B(0); // vypnuti motoru
printf("E"); // Hlasime chybu
err=0;
}
};
delay_ms(500); // cas na ustaleni trubky
output_B(0); // vypnuti motoru
}
// --- Najeti na vychozi polohu dole ---
void nula()
{
port=0b10100000; // vychozi nastaveni fazi pro rizeni motoru
output_B(port);
j=0; // smer dolu
delay_ms(500);
}
//------------------------------------------------
void main()
{
setup_oscillator(OSC_8MHZ|OSC_INTRC); // 8 MHz interni RC oscilator
setup_adc_ports(NO_ANALOGS|VSS_VDD);
setup_adc(ADC_OFF);
setup_spi(FALSE);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_ccp1(CCP_OFF);
setup_comparator(NC_NC_NC_NC);
setup_vref(FALSE);
output_B(0); // vypnuti motoru a topeni
set_tris_B(0b00000111); // faze a topeni jako vystupy
while(true)
{
nula();
dolu(); // otoc trubku do vychozi pozice dolu
CREN=0; CREN=1; // Reinitialise USART
while(!kbhit())
{
if (!input(HALL)) // znovuotoceni trubky dolu, kdyby ji vitr otocil
{
dolu();
}
}; // pokracuj dal, kdyz prisel po RS232 znak
uhel=getc(); // prijmi znak
if ('m'==uhel) // standardni mereni ve trech polohach
{
nula();
j++; // reverz, nahoru
krok(18);
printf("A"); // mereni teploty 45° nad obzorem
delay_ms(200);
krok(7);
printf("B"); // mereni teploty v zenitu
delay_ms(200);
krok(7);
printf("C"); // mereni teploty 45° nad obzorem na druhou stranu
delay_ms(200);
j++; // reverz
dolu();
printf("G"); // mereni teploty Zeme (<G>round)
continue;
}
if ('i'==uhel) {printf("I"); continue;} // Predani prikazu pro Info
if ('h'==uhel) {printf("H"); continue;} // Predani prikazu pro Topeni
if ('c'==uhel) {printf("C"); continue;} // Predani prikazu pro vypnuti topeni
if ('x'==uhel) // Zjisteni verze FW
{
printf("Mrakomer - Motor V%s (C) 2006 KAKL\n\r", VER);
printf("%s\n\r", REV);
}
if ((uhel>='0') && (uhel<='@')) // mereni v pozadovanem uhlu [0..;]=(0..11)
{
uhel-='0';
};
if(uhel>11) continue; // ochrana, abysme neukroutili draty
nula();
j++; // reverz, nahoru
krok(12); // odkrokuj do roviny
for(i=0; i<uhel; i++) // dale odkrokuj podle pozadovaneho uhlu
{
krok(2);
};
printf("S");
delay_ms(200);
j++; // reverz
dolu();
printf("G"); // mereni teploty Zeme (<G>round)
}
}

/Designs/MRAKOMER2/SW/Ondrejov/motor/irmrak.h
0,0 → 1,6
#include <16F88.h>
#device adc=8
#fuses NOWDT,INTRC_IO, NOPUT, NOMCLR, NOBROWNOUT, NOLVP, NOCPD, NOWRT, NODEBUG, NOPROTECT, NOFCMEN, NOIESO, CCPB3
#use delay(clock=8000000)
#use rs232(baud=2400,parity=N,xmit=PIN_A6,rcv=PIN_A7,bits=8)

/Designs/MRAKOMER2/SW/Ondrejov/motor/irmrak.hex
0,0 → 1,84
:1000000001308A00392900004D39E135EF36653974
:10001000A016A0266F3A6F392010D6127310A821AF
:1000200029103218301BA025C1254C050D005E306B
:1000300084008313000803192A280230F800F7010E
:10004000F70B2028F80B1F289730F700F70B26280E
:10005000800B1D280800A030D8008316860183126B
:1000600058088600D9010230DC00FA30DE00172083
:10007000DC0B352808005D08DD03003A031954281D
:1000800059080139013C031D4828C030D8064A28C8
:100090003030D80683168601831258088600143043
:1000A000DE001720D90A3B280800831605138312A7
:1000B00005130830F8005C280000F8176D28F813C5
:1000C000E00C03180517031C051378176D28781327
:1000D000F80B60286B28000005170130F700840139
:1000E000840B7028F70B6F280E308400840B762861
:1000F0000000F81B5F28781B67280800DC018316C6
:1001000005168312051A95280130DD003B20DC0A14
:100110005C08283C031D94288316860183128601FF
:100120004530E0005520DC017F280230DD00FA3048
:10013000DE001720DD0B97288316860183128601C7
:1001400008000408F800831685178312851BA6286B
:100150000830F700DC01F717BD28F713BD2803109E
:10016000851B0314DC0C7717BD287713F70BAF281A
:10017000780884005C08F800D22801308400003040
:10018000F71B5530F800F80BC328840BBF280D303F
:10019000F71B0330F800F80BCB28F71BAD28771BB3
:1001A000B528AF288A11EA29831603178C170C1477
:1001B000000000000318032983120C087F39031381
:1001C000DD0003170D080313DE0003170F080313E8
:1001D000DF005D08E00055205E0803178D00031363
:1001E0005F0803178F0083168C170C1400000000A3
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:1002000022298316031783120C0D0E0D7F39031359
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:100230005F0803178F008D0A03198F0A0310031339
:10024000DC0BD4280800800803193829DD010408D4
:10025000DC005D10831B5D140008E00055205C0885
:10026000840083135D188317840A0319850A2329E0
:100270000800840183131F308305723083168F00BA
:100280000F0805138312051783161F129F121B08F0
:1002900080399B0007309C008312A001A1013330FC
:1002A000A2002E30A3003030A400A5012430A60007
:1002B0004930A7006430A8003A30A9002030AA00D5
:1002C0006930AB007230AC006D30AD007230AE0002
:1002D0006130AF006B30B0002E30B1006330B2003F
:1002E0002030B3003430B4003230B5003030B600C6
:1002F0002030B7003230B8003030B900BA003630A4
:10030000BB002D30BC003130BD003230BE002D307E
:10031000BF003230C0003930C1002030C20032305E
:10032000C3003130C4003A30C5003430C600333029
:10033000C7003A30C8003130C900CA005A30CB007B
:100340002030CC006B30CD006130CE006B30CF0060
:100350006C30D0002030D1002430D200D301723074
:1003600083168F000F081F129F121B0880399B00F5
:1003700083121F10940183160108C73908388100C1
:100380008312900183168615831297010730831616
:100390009C00050885000630F700F70BCD2900000A
:1003A0001C0883120D1383169D018601831286019A
:1003B00007308316860083122B207E201812181611
:1003C000851FE929831605168312051AE8297E2060
:1003D000E029A1287808DA005A086D3C031D132A89
:1003E0002B20D90A1230DD003B204130E00055209F
:1003F000C830DE0017200730DD003B204230E0002F
:100400005520C830DE0017200730DD003B20433088
:10041000E0005520C830DE001720D90A7E20473082
:10042000E0005520DC295A08693C031D1B2A49308D
:10043000E0005520DC295A08683C031D232A483077
:10044000E0005520DC295A08633C031D2B2A433069
:10045000E0005520DC295A08783C031D512A04305D
:1004600003178D0000308F00031013300313DC00DE
:10047000D42022308400831323210E3003178D00F3
:1004800000308F00031410300313DC00D42026301A
:100490008400831323210A30E00055200D30E00052
:1004A00055205A082F3C03185B2A5A08403C031C6D
:1004B0005B2A3030DA025A080B3C031CDC292B2063
:1004C000D90A0C30DD003B20DB015A085B0203181F
:1004D0006E2A0230DD003B20DB0A652A5330E00043
:1004E0005520C830DE001720D90A7E204730E000B2
:0604F0005520DC29630029
:04400E00182FFC3F2C
:00000001FF
;PIC16F88
;CRC=345C CREATED="20-VIII-10 19:02"

/Designs/MRAKOMER2/SW/Ondrejov/teplomer/irmrak.h
0,0 → 1,5
#include <16F88.h>
#device adc=8
#fuses NOWDT,INTRC_IO, NOPUT, NOMCLR, NOBROWNOUT, NOLVP, NOCPD, NOWRT, NODEBUG, NOPROTECT, NOFCMEN, NOIESO, CCPB3
#use delay(clock=8000000)

/Designs/MRAKOMER2/SW/Ondrejov/teplomer/irmrak4.PJT
0,0 → 1,45
[PROJECT]
Target=irmrak4.HEX
Development_Mode=2
Processor=0x688F
Processor_Text=PIC16F88
ToolSuite=CCS
[Directories]
Include=
Library=
LinkerScript=
[Target Data]
FileList=C:\Dokumenty\MLAB\Designs\MRAKOMER2\SW\Ondrejov\teplomer\irmrak4.c
BuildTool=C-COMPILER
OptionString=+FM
AdditionalOptionString=
BuildRequired=1
[irmrak4.c]
Type=4
Path=
FileList=
BuildTool=
OptionString=
AdditionalOptionString=
[mru-list]
1=irmrak4.c
[Windows]
0=0000 irmrak4.c 0 0 796 451 3 0
[Opened Files]
1=irmrak4.c
2=smb.c
3=irmrak4.h
4=..\..\..\..\..\..\..\Program Files\PICC\devices\16F88.h
5=..\..\..\..\..\..\..\Program Files\PICC\drivers\string.h
6=..\..\..\..\..\..\..\Program Files\PICC\drivers\stddef.h
7=..\..\..\..\..\..\..\Program Files\PICC\drivers\ctype.h
8=
[Units]
Count=1
1=irmrak4 (main)

/Designs/MRAKOMER2/SW/Ondrejov/teplomer/irmrak4.c
0,0 → 1,148
/**** IR Mrakomer - special version for BART ****/
#define VERSION "2.2"
#define ID "$Id: irmrak4.c 1306 2009-01-17 12:25:40Z kakl $"
#include "irmrak4.h"
#bit CREN = 0x18.4 // USART registers
#bit SPEN = 0x18.7
#bit OERR = 0x18.1
#bit FERR = 0x18.2
#include <string.h>
#CASE // Case sensitive compiler
#define MAXHEAT 30 // Doba po kterou se topi v [s]
#define HEATING PIN_B3 // Heating for defrosting
char VER[4]=VERSION; // Buffer for concatenate of a version string
int8 heat; // Status variables
void delay(int16 cycles) // Vlastni pauza, zbylo to z ovladani fototranzistoru z MM4
{
int16 i;
for(i=0; i<cycles; i++) {delay_us(100);}
}
void welcome(void) // Welcome message
{
char REV[50]=ID; // Buffer for concatenate of a version string
if (REV[strlen(REV)-1]=='$') REV[strlen(REV)-1]=0;
printf("\n\r\n\r# Mrakomer %s (C) 2007 KAKL\n\r",VER); // Welcome message
printf("#%s\n\r",&REV[4]);
printf("#\n\r");
printf("# h - Switch On Heating for 30s.\n\r");
printf("# f - Freezing. Switch Off Heating.\n\r");
printf("# i - Print this Information.\n\r");
printf("# 0..9 - Single measure at given angle.\n\r");
printf("# m - Measure at three space points.\n\r");
printf("#\n\r");
printf("$<Angle> <Ambient Temperature> <Space Temperature> ...");
printf("\n\r\n\r");
//---WDT
restart_wdt();
}
#include "smb.c" // System Management Bus driver
// Read sensor's RAM
// Returns temperature in °K
int16 ReadTemp(int8 addr, int8 select)
{
unsigned char arr[6]; // Buffer for the sent bytes
int8 crc; // Readed CRC
int16 temp; // Readed temperature
addr<<=1;
SMB_STOP_bit(); //If slave send NACK stop comunication
SMB_START_bit(); //Start condition
SMB_TX_byte(addr);
SMB_TX_byte(RAM_Access|select);
SMB_START_bit(); //Repeated Start condition
SMB_TX_byte(addr);
arr[2]=SMB_RX_byte(ACK); //Read low data,master must send ACK
arr[1]=SMB_RX_byte(ACK); //Read high data,master must send ACK
temp=make16(arr[1],arr[2]);
crc=SMB_RX_byte(NACK); //Read PEC byte, master must send NACK
SMB_STOP_bit(); //Stop condition
arr[5]=addr;
arr[4]=RAM_Access|select;
arr[3]=addr;
arr[0]=0;
if (crc != PEC_calculation(arr)) temp=0; // Calculate and check CRC
return temp;
}
/*-------------------------------- MAIN --------------------------------------*/
void main()
{
unsigned int16 timer, temp, tempa;
signed int16 ta, to;
output_low(HEATING); // Heating off
delay_ms(500);
restart_wdt();
heat=0;
timer=0;
welcome();
tempa=ReadTemp(SA, RAM_Tamb); // Dummy read
temp=ReadTemp(SA, RAM_Tobj1);
delay_ms(500);
while(TRUE) // Main Loop
{
char ch;
//---WDT
restart_wdt();
if(kbhit())
{
ch=getc(); // Precti znak od radice motoru
CREN=0; CREN=1; // Reinitialise USART
tempa=ReadTemp(SA, RAM_Tamb); // Read temperatures from sensor
temp=ReadTemp(SA, RAM_Tobj1);
ta=tempa*2-27315; // °K -> °C
to=temp*2-27315;
switch (ch)
{
case 'H':
heat=MAXHEAT; // Need heating
break;
case 'F':
heat=0; // Freeze
break;
case 'I':
welcome(); // Information about version, etc...
break;
}
printf("%c %Ld %Ld ", ch, ta, to);
if (('A'!=ch)&&('B'!=ch)&&('C'!=ch)&&('S'!=ch)) printf("H %u\r\n", heat); // Vzdycky se konci natocenim na Ground
}
delay_ms(1);
if (timer>0) {timer--;} else {timer=1000;}
if (heat>0) {if(1000==timer) heat--; output_high(HEATING);} else { output_low(HEATING); }
}
}

/Designs/MRAKOMER2/SW/Ondrejov/teplomer/irmrak4.h
0,0 → 1,19
#include <16F88.h>
#device adc=8
#FUSES NOWDT //!!! //Watch Dog Timer
#FUSES INTRC_IO //Internal RC Osc, no CLKOUT
#FUSES PUT //Power Up Timer
#FUSES NOMCLR //Master Clear pin used for I/O
#FUSES NOBROWNOUT //No brownout reset
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOCPD //No EE protection
#FUSES NOWRT //Program memory not write protected
#FUSES NODEBUG //No Debug mode for ICD
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOFCMEN //Fail-safe clock monitor disabled
#FUSES NOIESO //Internal External Switch Over mode disabled
#use delay(clock=8000000)
#use rs232(baud=2400,parity=N,xmit=PIN_B5,rcv=PIN_B2,bits=8)

/Designs/MRAKOMER2/SW/Ondrejov/teplomer/irmrak4.hex
0,0 → 1,182
:1000000004308A008D2C00008A068A0623104D39A0
:10001000E135EF366539A0127310A8212910321886
:10002000B01BA025C1254C050D0023106810201021
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:100060006717A029F734F43168104F336610C8328F
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:1000A0003017AE1CA016A029693767366510ED32EF
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:1000C000EE33EC322E050D0023106D102010A0161B
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;PIC16F88
;CRC=FAA7 CREATED="21-VIII-10 08:50"

/Designs/MRAKOMER2/SW/Ondrejov/teplomer/smb.c
0,0 → 1,261
/************ SMB driver ************/
#define SA 0x00 // Slave Address (0 for single slave / 0x5A<<1 default)
#define RAM_Access 0x00 // RAM access command
#define RAM_Tobj1 0x07 // To1 address in the RAM
#define RAM_Tamb 0x06 // Ta address in the RAM
// High and Low level of clock
#define HIGHLEV 40 // max. 50us
#define LOWLEV 100 // max. 30ms
#define TBUF 20
// SMBus control signals
#define SCL PIN_B0
#define SDA PIN_B1
#define mSDA_HIGH() output_float(SDA); // SDA float
#define mSDA_LOW() output_low(SDA); // SDA low
#define mSCL_HIGH() output_float(SCL); // SCL float
#define mSCL_LOW() output_low(SCL); // SCL low
#define ACK 0
#define NACK 1
//**********************************************************************************************
// START CONDITION ON SMBus
//**********************************************************************************************
//Name: START_bit
//Function: Generate START condition on SMBus
//Parameters: No
//Return: No
//Comments: Refer to "System Managment BUS(SMBus) specification Version 2.0"
// or AN"SMBus communication with MLX90614" on the website www.melexis.com
//**********************************************************************************************
void SMB_START_bit(void)
{
// disable_interrupts(GLOBAL);
mSDA_HIGH(); // Set SDA line
delay_us( TBUF ); // Wait a few microseconds
mSCL_HIGH(); // Set SCL line
delay_us( TBUF ); // Generate bus free time between Stop
// and Start condition (Tbuf=4.7us min)
mSDA_LOW(); // Clear SDA line
delay_us( TBUF ); // Hold time after (Repeated) Start Condition.
// After this period, the first clock is generated.
// (Thd:sta=4.0us min)
mSCL_LOW(); // Clear SCL line
// enable_interrupts(GLOBAL);
delay_us( TBUF ); // Wait a few microseconds
}
//*********************************************************************************************
// STOP CONDITION ON SMBus
//*********************************************************************************************
//Name: STOPbit
//Function: Generate STOP condition on SMBus
//Parameters: No
//Return: No
//Comments: Refer to "System Managment BUS(SMBus) specification Version 2.0"
// or AN"SMBus communication with MLX90614" on the website www.melexis.com
//*********************************************************************************************
void SMB_STOP_bit(void)
{
// disable_interrupts(GLOBAL);
mSDA_HIGH();
mSCL_LOW(); // Clear SCL line
delay_us( TBUF ); // Wait a few microseconds
mSDA_LOW(); // Clear SDA line
delay_us( TBUF ); // Wait a few microseconds
mSCL_HIGH(); // Set SCL line
delay_us( TBUF ); // Stop condition setup time(Tsu:sto=4.0us min)
mSDA_HIGH(); // Set SDA line
// enable_interrupts(GLOBAL);
}
void SMB_send_bit(unsigned char bit_out)
{
// disable_interrupts(GLOBAL);
if(bit_out==0) {mSDA_LOW();}
else {mSDA_HIGH();}
delay_us(3);
mSCL_HIGH(); // Set SCL line
delay_us( HIGHLEV ); // High Level of Clock Pulse
mSCL_LOW(); // Clear SCL line
//!!! toggle_dome();
delay_us(1);
delay_us( LOWLEV ); // Low Level of Clock Pulse
// mSDA_HIGH(); // Master release SDA line ,
// enable_interrupts(GLOBAL);
//!!! toggle_dome();
delay_us(1);
return;
}
unsigned char SMB_Receive_bit(void)
{
unsigned char Ack_bit;
// disable_interrupts(GLOBAL);
mSDA_HIGH(); //_SDA_IO=1; // SDA-input
mSCL_HIGH(); // Set SCL line
delay_us( HIGHLEV ); // High Level of Clock Pulse
if(input(SDA)) Ack_bit=1; // \ Read acknowledgment bit, save it in Ack_bit
else Ack_bit=0; // /
mSCL_LOW(); // Clear SCL line
//!!! toggle_dome();
delay_us(1);
delay_us( LOWLEV ); // Low Level of Clock Pulse
// enable_interrupts(GLOBAL);
//!!! toggle_dome();
delay_us(1);
return Ack_bit;
}
//*********************************************************************************************
// TRANSMIT DATA ON SMBus
//*********************************************************************************************
//Name: TX_byte
//Function: Send a byte on SMBus
//Parameters: TX_buffer ( the byte which will be send on the SMBus )
//Return: Ack_bit ( acknowledgment bit )
//Comments: Sends MSbit first
//*********************************************************************************************
unsigned char SMB_TX_byte(unsigned char Tx_buffer)
{
unsigned char Bit_counter;
unsigned char Ack_bit;
unsigned char bit_out;
for(Bit_counter=8; Bit_counter; Bit_counter--)
{
if(Tx_buffer&0x80) bit_out=1; // If the current bit of Tx_buffer is 1 set bit_out
else bit_out=0; // else clear bit_out
SMB_send_bit(bit_out); // Send the current bit on SDA
Tx_buffer<<=1; // Get next bit for checking
}
Ack_bit=SMB_Receive_bit(); // Get acknowledgment bit
return Ack_bit;
}
//*********************************************************************************************
// RECEIVE DATA ON SMBus
//*********************************************************************************************
//Name: RX_byte
//Function: Receive a byte on SMBus
//Parameters: ack_nack (ackowlegment bit)
//Return: RX_buffer(Received byte)
//Comments: MSbit is received first
//*********************************************************************************************
unsigned char SMB_RX_byte(unsigned char ack_nack)
{
unsigned char RX_buffer;
unsigned char Bit_Counter;
for(Bit_Counter=8; Bit_Counter; Bit_Counter--)
{
if(SMB_Receive_bit()) // Get a bit from the SDA line
{
RX_buffer <<= 1; // If the bit is HIGH save 1 in RX_buffer
RX_buffer |=0b00000001;
}
else
{
RX_buffer <<= 1; // If the bit is LOW save 0 in RX_buffer
RX_buffer &=0b11111110;
}
}
SMB_send_bit(ack_nack); // Sends acknowledgment bit
return RX_buffer;
}
unsigned char PEC_calculation(unsigned char pec[]) // CRC calculation
{
unsigned char crc[6];
unsigned char BitPosition=47;
unsigned char shift;
unsigned char i;
unsigned char j;
unsigned char temp;
do
{
crc[5]=0; /* Load CRC value 0x000000000107 */
crc[4]=0;
crc[3]=0;
crc[2]=0;
crc[1]=0x01;
crc[0]=0x07;
BitPosition=47; /* Set maximum bit position at 47 */
shift=0;
//Find first 1 in the transmited message
i=5; /* Set highest index */
j=0;
while((pec[i]&(0x80>>j))==0 && i>0)
{
BitPosition--;
if(j<7)
{
j++;
}
else
{
j=0x00;
i--;
}
//!!! toggle_dome();
delay_us(1);
}
shift=BitPosition-8; /*Get shift value for crc value*/
//Shift crc value
while(shift)
{
for(i=5; i<0xFF; i--)
{
if((crc[i-1]&0x80) && (i>0))
{
temp=1;
}
else
{
temp=0;
}
crc[i]<<=1;
crc[i]+=temp;
}
shift--;
//!!! toggle_dome();
delay_us(1);
}
//Exclusive OR between pec and crc
for(i=0; i<=5; i++)
{
pec[i] ^=crc[i];
}
} while(BitPosition>8);
return pec[0];
}