Liangzhen Lai / Mbed 2 deprecated DDRO_Farrari

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Dependencies:   mbed

Dependents:   Orange_Ferrari_board_functional

Diff: dac.cpp

Revision:
0:84a8bcfbdec9
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dac.cpp	Mon Oct 07 22:58:19 2013 +0000
@@ -0,0 +1,26 @@
+#include "dac.h"
+
+using namespace std;
+
+void power_chan(char i2caddr, char chan, float voltage)
+{   
+    char data[3];
+    
+    // voltage = 3.3 * Code / 4096
+    // Code = voltage * 4096 / 3.3 = voltage * 1241
+    unsigned int full_code = 1241 * voltage;
+    
+    char MSDB, LSDB;
+    LSDB = full_code % 0x10;
+    MSDB = full_code / 0x10;
+    
+    data[0]=chan;
+    data[1]=MSDB;
+    data[2]=LSDB;
+    
+    power_error_indicator = 1;
+    //pc.printf ("%X\r\n", A);
+    while (dac_i2c.write(i2caddr,data,3,false)) {
+    }
+    power_error_indicator = 0;
+}