Diff: PeripheralLayer/PeMod_UV370.cpp

Revision:

2:0ee90da44162

diff -r 0c1053275589 -r 0ee90da44162 PeripheralLayer/PeMod_UV370.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PeripheralLayer/PeMod_UV370.cpp	Thu May 19 15:52:24 2016 +0000
@@ -0,0 +1,50 @@
+#include "SysConfig.h"
+
+#define UV_LV_MAX   11
+#define UV_SMP_AVG  5
+const int UvLvTable[] = {50, 227, 318, 408, 503, 606, 696, 795, 881, 976, 1079, 1170};
+
+#define i2c_uv i2c_sen
+//#define uart_db uart_pc
+
+int UV_Init(void)
+{
+    return 0;    
+}
+
+float UV_ReadVolt(void)
+{    
+    return(adc_ch10.read() * 3300);
+}
+
+float UV_ReadLv(void)
+{
+    int i;
+    float volt = 0, level;
+    for(i=0; i<UV_SMP_AVG; i++)
+        volt += UV_ReadVolt();
+    volt = volt / UV_SMP_AVG ;
+    
+    if(volt < (float)UvLvTable[0])
+    {
+        level = 0;  
+        return level;
+    }
+    
+    if(volt > (float)UvLvTable[UV_LV_MAX])
+    {
+        level = 11;
+        return level;
+    }
+    
+    for(i=0; i<UV_LV_MAX; i++)
+    {
+        if(volt > (float)UvLvTable[i] && volt < (float)UvLvTable[i+1])
+        {
+            level = i + (volt - UvLvTable[i]) / (UvLvTable[i+1] - UvLvTable[i]);
+            return level;
+        }
+    }
+    
+    return -1;
+}
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