Xiaohai Li / Mbed 2 deprecated AirBoxProto

Demo

Dependencies:   mbed

Diff: PeripheralLayer/PeMod_ZPH01.cpp

Revision:
1:0c1053275589
Parent:
0:3dac4f477e98
--- a/PeripheralLayer/PeMod_ZPH01.cpp	Wed Jul 08 17:50:18 2015 +0000
+++ b/PeripheralLayer/PeMod_ZPH01.cpp	Thu Jul 09 05:14:58 2015 +0000
@@ -5,7 +5,7 @@
 #define ZPH01_GAS_ID    0x18
 
 #define uart_zph01 uart_sen
-#define uart_db uart_pc
+//#define uart_db uart_pc
 
 int ZPH01_Init(void)
 {    
@@ -56,7 +56,10 @@
     if(data[ZPH01_DAT_LEN - 1] == sum)
     {
         //Unit: percents(%)
-        float ratioPM25 = data[3] * 1.0 + data[3] / 255.0;
+        float ratioPM25 = data[3] * 1.0 + data[4] / 100.0;
+        #if defined uart_db
+        uart_db.printf("PM2.5 PWM ratio is %f%%.\n\r", ratioPM25);
+        #endif
         //Unit: ug/m^3
         float volPM25 = ratioPM25 * 20.43;
         return volPM25;