Diff: main.cpp

Revision:

0:a1acbc39f9ef

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Apr 24 15:48:14 2020 +0000
@@ -0,0 +1,48 @@
+#include "mbed.h"
+ 
+I2C tempsensor(PB_9, PB_8); //sda, sc1 
+Serial pc(USBTX, USBRX); //tx, rx 
+int addr = 0x94U;/** I2C Device Address 8 bit format **/
+char config_t[3]; 
+char temp_read[3];
+int tempH, tempL;
+float fTemp;
+
+int main() { 
+    pc.printf("Hello world!\n\r");
+    config_t[0] = 0xFE; //send to pointer 'Manufacturer ID register' SEND_BYTE
+    tempsensor.write(addr, config_t, 1);
+    wait(0.1);
+    tempsensor.read(addr, temp_read, 1); //read the one-byte data RECEIVE_BYTE
+    pc.printf("Manufacturer ID=%d\n\r", temp_read[0]);
+    wait(0.5);
+
+    config_t[0] = 0x03; // WRITE_BYTE
+    config_t[1] = 0x8C; // write 0x8C to configuration register 0x03
+    tempsensor.write(addr, config_t, 2);
+    wait(0.1); 
+
+    config_t[0] = 0x04; // WRITE_BYTE
+    config_t[1] = 0x04; // write 0x04 to configuration register 0x04
+    tempsensor.write(addr, config_t, 2); 
+    wait(0.1);
+
+    while(1) { 
+        wait(1);
+
+        config_t[0] = 0x00; //set pointer reg to 'Temperature value high byte register' SEND_BYTE
+        tempsensor.write(addr, config_t, 1);
+        tempsensor.read(addr, temp_read, 1); //read tempH RECEIVE_BYTE
+        tempH=temp_read[0];
+
+        config_t[0] = 0x02; //set pointer reg to 'Temperature value low byte register' SEND_BYTE
+        tempsensor.write(addr, config_t, 1);
+        tempsensor.read(addr, temp_read, 1); //read tempL RECEIVE_BYTE
+        tempL=temp_read[0];
+
+        fTemp = ((tempH  * 256) + (tempL & 0xFC));// Convert the data to 12-bits
+        fTemp=fTemp/256;
+
+        pc.printf("Temp = %f degC\n\r", fTemp);
+    } 
+}