Xiaohai Li / Mbed 2 deprecated AirBoxProto

Demo

Dependencies:   mbed

PeripheralLayer/PeMod_UV370.cpp@2:0ee90da44162, 2016-05-19 (annotated)

Committer:
nightseas
Date:
Thu May 19 15:52:24 2016 +0000
Revision:
2:0ee90da44162
AirBoxProtoDemo

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nightseas 2:0ee90da44162 1 #include "SysConfig.h"
nightseas 2:0ee90da44162 2
nightseas 2:0ee90da44162 3 #define UV_LV_MAX 11
nightseas 2:0ee90da44162 4 #define UV_SMP_AVG 5
nightseas 2:0ee90da44162 5 const int UvLvTable[] = {50, 227, 318, 408, 503, 606, 696, 795, 881, 976, 1079, 1170};
nightseas 2:0ee90da44162 6
nightseas 2:0ee90da44162 7 #define i2c_uv i2c_sen
nightseas 2:0ee90da44162 8 //#define uart_db uart_pc
nightseas 2:0ee90da44162 9
nightseas 2:0ee90da44162 10 int UV_Init(void)
nightseas 2:0ee90da44162 11 {
nightseas 2:0ee90da44162 12 return 0;
nightseas 2:0ee90da44162 13 }
nightseas 2:0ee90da44162 14
nightseas 2:0ee90da44162 15 float UV_ReadVolt(void)
nightseas 2:0ee90da44162 16 {
nightseas 2:0ee90da44162 17 return(adc_ch10.read() * 3300);
nightseas 2:0ee90da44162 18 }
nightseas 2:0ee90da44162 19
nightseas 2:0ee90da44162 20 float UV_ReadLv(void)
nightseas 2:0ee90da44162 21 {
nightseas 2:0ee90da44162 22 int i;
nightseas 2:0ee90da44162 23 float volt = 0, level;
nightseas 2:0ee90da44162 24 for(i=0; i<UV_SMP_AVG; i++)
nightseas 2:0ee90da44162 25 volt += UV_ReadVolt();
nightseas 2:0ee90da44162 26 volt = volt / UV_SMP_AVG ;
nightseas 2:0ee90da44162 27
nightseas 2:0ee90da44162 28 if(volt < (float)UvLvTable[0])
nightseas 2:0ee90da44162 29 {
nightseas 2:0ee90da44162 30 level = 0;
nightseas 2:0ee90da44162 31 return level;
nightseas 2:0ee90da44162 32 }
nightseas 2:0ee90da44162 33
nightseas 2:0ee90da44162 34 if(volt > (float)UvLvTable[UV_LV_MAX])
nightseas 2:0ee90da44162 35 {
nightseas 2:0ee90da44162 36 level = 11;
nightseas 2:0ee90da44162 37 return level;
nightseas 2:0ee90da44162 38 }
nightseas 2:0ee90da44162 39
nightseas 2:0ee90da44162 40 for(i=0; i<UV_LV_MAX; i++)
nightseas 2:0ee90da44162 41 {
nightseas 2:0ee90da44162 42 if(volt > (float)UvLvTable[i] && volt < (float)UvLvTable[i+1])
nightseas 2:0ee90da44162 43 {
nightseas 2:0ee90da44162 44 level = i + (volt - UvLvTable[i]) / (UvLvTable[i+1] - UvLvTable[i]);
nightseas 2:0ee90da44162 45 return level;
nightseas 2:0ee90da44162 46 }
nightseas 2:0ee90da44162 47 }
nightseas 2:0ee90da44162 48
nightseas 2:0ee90da44162 49 return -1;
nightseas 2:0ee90da44162 50 }