DS2482 I²C 1-Wire® Master driver
by atruntime.com
A 1-Wire network consists of a single master and one or more slave devices. The 1-Wire master can be constructed with an IO pin of a microprocessor and manually-generated timing pulses. The DS2482 I²C to 1-Wire bridge alleviates the design engineer from implementing the details of 1-Wire timing. See Figure 1 for a simplified diagram of the DS2482 configuration. Use it, improve it, distribute it!
About this Code Example
#include // Required for SFR defs
#include "OW_Driver.h"
#pragma config FPLLMUL = MUL_20, FPLLIDIV = DIV_2, FPLLODIV = DIV_1, FWDTEN = OFF
#pragma config POSCMOD = XT, FNOSC = PRIPLL, FPBDIV = DIV_1
void main(void)
{
unsigned char status_reg,configuration_reg,value2,ROM[8],dat[8],temperature;
unsigned char address=0;
TRISDbits.TRISD0=0;
TRISEbits.TRISE7=0;
TRISDbits.TRISD2=0;
InitOW();
status_reg=DeviceReset(0);
status_reg=DeviceReset(1);
status_reg=DeviceReset(2);
status_reg=DeviceReset(3);
configuration_reg=ConfigurationRegister(0,APU|SPU);
configuration_reg=ConfigurationRegister(1,APU|SPU);
configuration_reg=ConfigurationRegister(2,APU|SPU);
configuration_reg=ConfigurationRegister(3,APU|SPU);
ROM[0]=0x28;
ROM[1]=0xEF;
ROM[2]=0xB0;
ROM[3]=0x70;
ROM[4]=0x02;
ROM[5]=0x00;
ROM[6]=0x00;
ROM[7]=0xBB;
while(1) //TESTED! WORKED WELL!! :)
{
SkipROM(address);
ConvertTemperature(address);
MatchROM(address,ROM);
temperature= ReadScratchpad(address);
}
}
- Current Version: 1.0.0
- Updated: Jan 31, 2012
- Downloads: 1089
- Status: Released
-
- MPLAB Version:
- C Compiler: C18,C30,C32
- Development Tools: ICD-3
- Supported Devices: PIC18,PIC24,PIC32
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Release History
- DS2482 I²C 1-Wire® Master driver (current version) January 31, 2012
- first release