Steven Kay / Mbed 2 deprecated MCP9803_NUCLEO_Driver

Initial I2C Working

Dependencies:   mbed

main.cpp@1:444546e8cd20, 2017-03-29 (annotated)

Committer:
sk398
Date:
Wed Mar 29 12:20:34 2017 +0000
Revision:
1:444546e8cd20
Parent:
0:fbf82bf637bb
Child:
2:832cb4376d2a
working, useful for I2C Comms with NUCLEO Boards;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sk398 0:fbf82bf637bb 1 #include "mbed.h"
sk398 0:fbf82bf637bb 2 #include "MCP9803.h"
sk398 0:fbf82bf637bb 3
sk398 0:fbf82bf637bb 4 MCP9803 TempSensor(PB_9,PB_8,0x90,100000);
sk398 0:fbf82bf637bb 5
sk398 0:fbf82bf637bb 6 int main()
sk398 0:fbf82bf637bb 7 {
sk398 0:fbf82bf637bb 8 char data[2];
sk398 0:fbf82bf637bb 9
sk398 0:fbf82bf637bb 10 data[0] = 0x01;
sk398 0:fbf82bf637bb 11 data[1] = 0x72;
sk398 0:fbf82bf637bb 12
sk398 0:fbf82bf637bb 13 printf("Write Return Value = %d\r\n",TempSensor.I2C_Write(data,2));
sk398 0:fbf82bf637bb 14
sk398 0:fbf82bf637bb 15 data[0] = 0x01;
sk398 0:fbf82bf637bb 16
sk398 0:fbf82bf637bb 17 printf("Write Return Value = %d\r\n",TempSensor.I2C_Write(data,1));
sk398 0:fbf82bf637bb 18
sk398 0:fbf82bf637bb 19 TempSensor.I2C_Read(1);
sk398 0:fbf82bf637bb 20
sk398 0:fbf82bf637bb 21 data[0] = 0x00;
sk398 0:fbf82bf637bb 22 TempSensor.I2C_Write(data,1);
sk398 0:fbf82bf637bb 23
sk398 1:444546e8cd20 24 int len = 2;
sk398 1:444546e8cd20 25 char *buffer = TempSensor.I2C_Read(len);
sk398 1:444546e8cd20 26
sk398 1:444546e8cd20 27 char inBuffer[len];
sk398 1:444546e8cd20 28
sk398 1:444546e8cd20 29 for(int i = 0; i < len; i++)
sk398 1:444546e8cd20 30 {
sk398 1:444546e8cd20 31 inBuffer[i] = *(buffer+i);
sk398 1:444546e8cd20 32 }
sk398 1:444546e8cd20 33
sk398 1:444546e8cd20 34 int dat = (((inBuffer[0] << 8) | inBuffer[1])>>4);
sk398 1:444546e8cd20 35
sk398 1:444546e8cd20 36 printf("data value = %04x\r\n",dat);
sk398 1:444546e8cd20 37
sk398 1:444546e8cd20 38 if(dat > 2047)
sk398 1:444546e8cd20 39 {
sk398 1:444546e8cd20 40 dat -= 4096;
sk398 1:444546e8cd20 41 }
sk398 1:444546e8cd20 42
sk398 1:444546e8cd20 43 float tempC = 0.0625*dat;
sk398 1:444546e8cd20 44 printf("Temp C = %f\r\n\r\n",tempC);
sk398 0:fbf82bf637bb 45
sk398 0:fbf82bf637bb 46
sk398 0:fbf82bf637bb 47
sk398 0:fbf82bf637bb 48 }