Rune Langoy / Mbed 2 deprecated I2C_detect_address

Simple program detecting if a DS1307 is connected

Dependencies:   mbed

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Show/hide line numbers main.cpp Source File

main.cpp

00001 #include "mbed.h"
00002   
00003 I2C i2cBus(I2C_SDA, I2C_SCL);
00004  
00005 int main()
00006 {
00007        i2cBus.frequency(100000);
00008        
00009        int i2cAddres=0x68;                // Address of DS1307 is 0x68 (7 bit address)
00010        int i2c8BitAddres= i2cAddres <<1;  // Convert to 8bit addressing used by mbed 
00011     
00012        int result=i2cBus.write(i2c8BitAddres, NULL, 0);  
00013         
00014         //0 on success (ack), non-0 on failure (nack)                  
00015        if (result==0)   
00016             printf("I2C device found at address 0x%02X             \r\n", i2cAddres);
00017         else
00018             printf("I2C device Not found at address 0x%02X         \r\n", i2cAddres);              
00019 }
00020
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