Diff: HDC1080.cpp

Revision:

1:a0e46d956969

Parent:

0:fdb750cc9ca8

Child:

2:b913d2690215

--- a/HDC1080.cpp	Sat Oct 06 12:08:55 2018 +0000
+++ b/HDC1080.cpp	Fri Nov 08 04:56:00 2019 +0000
@@ -10,134 +10,94 @@
 #define     HDC_SER_OFF_MID     0xFC
 #define     HDC_SER_OFF_LAST    0xFD
 #define     I2C_FREQ            100000
-#define     CHIP_ADDRESS        (0x40 << 1)   // left shift 1 bit for 7 bit address required by
+#define     CHIP_ADDRESS        (0x40 << 1)
 
- // Shift by one bit to get 7 bit I2C Addrress
-char HDC_COMMN = HDC_MANID_OFF;
 const float HDC_CHIP_ERROR = -255;
 const unsigned long HDC_CHIP_SER_ERROR = 0;
-char Buffer[5];
 
 
-HDC1080::HDC1080(PinName sda, PinName slc) : I2C(sda,slc) 
+HDC1080::HDC1080(PinName sda, PinName slc) : I2C(sda, slc)
 {
-    memset(Buffer,'\0',5);
-    Buffer[0] = HDC_CONFIG_OFF;
+    memset(_buffer,'\0',5);
+    _buffer[0] = HDC_CONFIG_OFF;
     this->frequency(I2C_FREQ);
-    int res = this->write(CHIP_ADDRESS, Buffer, 2);
-    printf("HDC Constructor Initialization  : Res =%d\r\n", res);
+    int res = this->write(CHIP_ADDRESS, _buffer, 2);
 }
 
-  int HDC1080::ReadSignature(void)
-{ 
-    
-uint16_t  Manufacturer_ID = read2Bytes(CHIP_ADDRESS, HDC_MANID_OFF);
+int HDC1080::ReadSignature(void)
+{
+    uint16_t Manufacturer_ID = read2Bytes(CHIP_ADDRESS, HDC_MANID_OFF);
+
     if (Manufacturer_ID == 0) {
-     
-        printf("Error  reading HDC Manufacturer ID\r\n");
-       
-        return (int) HDC_CHIP_ERROR;
-    } else {  
-           
-        printf("Manufacturer_ID  :%x\r\n", (int) Manufacturer_ID);
-      
+        return (int)HDC_CHIP_ERROR;
+    } else {
         return Manufacturer_ID;
-    }    
-}  
-    
-    
-    
-    
-    
- float HDC1080::readTemperature()
+    }
+}
+
+float HDC1080::readTemperature()
 {
     uint16_t  rawT = read2Bytes(CHIP_ADDRESS, HDC_TEMP_OFF);
+
     if (rawT == 0) {
-       
-        printf("error in reading  chip Temp\r\n");
-       
         return HDC_CHIP_ERROR;
     } else {
         float temp = ((float) rawT / pow(2.0f, 16.0f)) * 165.0f - 40.0f;
-        
-        printf("Temperature   : %0.3f\r\n", temp);
-        
         return temp;
     }
-}   
-    
-       
-    
- float HDC1080::readHumidity()
+}
+
+float HDC1080::readHumidity()
 {
     uint16_t  rawH = read2Bytes(CHIP_ADDRESS, HDC_HUMID_OFF);
+
     if (rawH == 0) {
-       
-        printf("error in reading  chip Temp\r\n");
-       
         return HDC_CHIP_ERROR;
     } else {
         float humidity = ((float) rawH / pow(2.0f, 16.0f)) * 100.0f;
-        
-        printf("Humidity   : %0.3f\r\n", humidity);
-        
         return humidity;
     }
-}   
-    
-    unsigned long HDC1080::readSerialNumber(void)
-{    
-    wait(0.015);
-    memset(Buffer,0,4);
-    Buffer[0] = HDC_MANID_OFF;
-    int res = this->write(CHIP_ADDRESS, Buffer, 1);
-    if (res != 0) {      
-     
-      printf("Error writing chip addr res=%d\r\n", res);
+}
+
+unsigned long HDC1080::readSerialNumber(void)
+{
+    memset(_buffer,0,4);
+    _buffer[0] = HDC_MANID_OFF;
     
-      return (unsigned long) HDC_CHIP_SER_ERROR;
-    }      
- 
-    wait(0.015);
-    memset(Buffer,0,4);
-    res = this->read(CHIP_ADDRESS, Buffer,4);
+    int res = this->write(CHIP_ADDRESS, _buffer, 1);
     if (res != 0) {
-     
-      printf("Errot reading chip serial res=%d#\r\n", res);
-     
-      return (unsigned long) HDC_CHIP_SER_ERROR;
+        return (unsigned long) HDC_CHIP_SER_ERROR;
     }
-      
-//    unsigned long rawser = Buffer[0] << 16 | Buffer[1] << 8 | Buffer[0];
-      unsigned long rawser = Buffer[2] << 16 | Buffer[1] << 8 | Buffer[0];
-  
-    printf("Serial Number is =%lu\r\n", rawser);
-   
+
+    memset(_buffer,0,4);
+    
+    res = this->read(CHIP_ADDRESS, _buffer,4);
+    if (res != 0) {
+        return (unsigned long) HDC_CHIP_SER_ERROR;
+    }
+
+    unsigned long rawser = _buffer[2] << 16 | _buffer[1] << 8 | _buffer[0];
     return rawser;
 }
-    
-    
-    //Private Member functions 
-    
-    uint16_t HDC1080::read2Bytes(int chip_addr, int offset)
+
+//Private Member functions
+
+uint16_t HDC1080::read2Bytes(int chip_addr, int offset)
 {
-    memset(Buffer,0,3);
+    memset(_buffer,0,3);
+    
     // send chip address onto buss
-    Buffer[0] = offset;
-    int res =this->write(chip_addr, Buffer, 1);
+    _buffer[0] = offset;
+    int res =this->write(chip_addr, _buffer, 1);
     if (res != 0) {
-       
-        printf("error Communicating  to chip %d offst=%d\r\n", chip_addr, offset);
-       
         return 0;
     }
+    
     // read data from chip
-    wait(0.015);
-    memset(Buffer,0,3);
-    res = this->read(CHIP_ADDRESS, Buffer,2);
+    memset(_buffer,0,3);
+    res = this->read(CHIP_ADDRESS, _buffer,2);
     if (res != 0) {
-        printf("error Communicating to  chip %d offst=%d\r\n", chip_addr, offset);
         return 0;
     }
-    return  Buffer[0] << 8 | Buffer[1];
+    return  _buffer[0] << 8 | _buffer[1];
 }