Diff: ds1621.cpp

Revision:

0:0687b136fcab

Child:

1:eda09b9ea6e2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ds1621.cpp	Tue Nov 02 22:31:32 2010 +0000
@@ -0,0 +1,48 @@
+#ifndef TEMPATURE_C
+#define TEMPATURE_C
+
+
+#include "ds1621.h"
+
+static I2C* i2c;
+
+I2C * init_tempature(I2C *interface) {
+    i2c = interface;
+    if (i2c == NULL) {
+        i2c = new I2C(p28,p27);
+    }
+    i2c->frequency(100000);//100khz
+    
+    return i2c;
+}
+ /*FIXME: return a float or something instead of a lousy string*/
+void get_tempature(unsigned int adress, char * s) { // adress of the i2c ds1621 sensor, char buffer to contain the 
+    unsigned char   TempH, TempL;
+    int8_t data;
+    adress &= 0x0E;
+    data = 0xEE;
+    i2c->write(DS1621_Write|adress,(char *)&data,sizeof(data));
+    data = 0xAA;
+    i2c->write(DS1621_Write|adress,(char *)&data,sizeof(data));
+    
+    i2c->read(DS1621_Read|adress,(char *)&TempH,sizeof(TempH),1);
+    i2c->read(DS1621_Read|adress,(char *)&TempL,sizeof(TempL),0);    
+    
+    pc.printf("temph = 0x%x, TempL = 0x%x",TempH,TempL);
+    /*itoa(TempH,s,10); // convert to string
+    while (*s) {
+        s++; // goto end of string
+    }
+    *s++ = '.';
+    if (TempL == 0x80) {
+        *s++ = '5';
+
+    } else {
+        *s++ = '0';
+    }
+    *s = 0x00; //mark endo of string*/
+}
+
+
+
+#endif