mbed official / Mbed 2 deprecated I2C_HelloWorld_Mbed

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Show/hide line numbers main.cpp Source File

main.cpp

00001 #include "mbed.h"
00002  
00003 // Read temperature from LM75BD
00004 
00005 I2C i2c(p28, p27);
00006 
00007 const int addr = 0x90;
00008 
00009 int main() {
00010     char cmd[2];
00011     while (1) {
00012         cmd[0] = 0x01;
00013         cmd[1] = 0x00;
00014         i2c.write(addr, cmd, 2);
00015  
00016         wait(0.5);
00017  
00018         cmd[0] = 0x00;
00019         i2c.write(addr, cmd, 1);
00020         i2c.read(addr, cmd, 2);
00021  
00022         float tmp = (float((cmd[0]<<8)|cmd[1]) / 256.0);
00023         printf("Temp = %.2f\n", tmp);
00024     }
00025 }
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