Diff: hx711.cpp

Revision:

0:d47fb3d4b918

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hx711.cpp	Tue Mar 31 17:42:18 2015 +0000
@@ -0,0 +1,48 @@
+/* mbed library for HX711 Load Cell Amplifier/24-bit A/D converter
+ * Copyright (c) 2015 Jim Conner
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+ 
+#include "hx711.h"
+#include "mbed.h"
+
+//#define BPP         16                  // Bits per pixel    
+
+// Constructor         
+HX711::HX711(PinName clk, PinName addo) : clk(clk), addo(addo) 
+{
+
+    
+}
+
+// Destructor
+HX711::~HX711(void) {}
+
+
+// Reading data from the converter
+long HX711::readData(void)
+{
+  unsigned char i;
+  unsigned long Count;
+  clk=0;
+  Count=0;
+  while(addo);
+  for (i=0;i<24;i++) {
+      clk=1;
+      Count=Count<<1;
+      clk=0;
+      if(addo) Count++;
+  }
+  clk=1;
+  Count=Count ^0x800000;
+  clk=0;
+  return(Count);
+}
+