Diff: HC06Bluetooth.hpp

Revision:

0:9afc272fa65f

Child:

1:918a505314ea

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HC06Bluetooth.hpp	Fri Jun 24 21:03:20 2016 +0000
@@ -0,0 +1,109 @@
+/**
+ * @file HC06Bluetooth.hpp
+ * @date June 4th, 2016
+ * @author Weimen Li
+ * @class HC06Bluetooth
+ * @brief This class creates an object representing the HC06 Bluetooth Module
+ * The baud rate for the device is configured to be 115200.
+ * @code
+  // First, make sure to have included the hpp file:
+  #include HC06Bluetooth.hpp
+  // In the scope that you need it, create a new instance of the HC06Bluetooth object by calling:
+  HC06Bluetooth HC06BluetoothObj(TXPin, RXPin, "My Cool Robot", someCallBackFunction);
+  // The "someCallBackFunction" is a function you write that is called when a new line has been read.
+  // For instance, one simple callback is to simply echo (reprint to output) the received line:
+
+  void BTEchoCallback(const char* receivedLine) {
+      HC06BluetoothObj.print(receivedLine);
+  }
+
+  // A more sophisticated callback would be one that understands the received line contains commands,
+  // and parses them:
+// Callback function to read a command from input
+// Include the <sstream> library, since that is what we use to process information.
+#include <sstream>
+#include <string>
+// Variables to read information into.
+volatile float kConst;
+volatile float iConst;
+volatile float dConst;
+void BTCommandCallback(const char* receivedString) {
+    stringstream stringStream(receivedString);
+    // The received string has the form "newDeviceName kConst iConst dConst"
+    // Necessary to use these temporary variables since stringStream cannot read into
+    // "volatile float", but it can read into "float".
+    float kConstTemp;
+    float iConstTemp;
+    float dConstTemp;
+    stringStream >> kConstTemp;
+    stringStream >> iConstTemp;
+    stringStream >> dConstTemp;
+    kConst = kConstTemp;
+    iConst = iConstTemp;
+    dConst = dConstTemp;
+    // Echo the received commands:
+    char output[256];
+    sprintf(output, "Received Command: kConst = %f, iConst = %f, dConst = %f", kConst, iConst, dConst);
+    bluetoothObj.print(output);
+}
+
+}
+ * @endcode
+ */
+
+//TODO: Complete this example.
+
+
+#ifndef HC06BLUETOOTH_H_
+#define HC06BLUETOOTH_H_
+#include "mbed.h"
+#include <string>
+
+class HC06Bluetooth {
+public: // Public methods.
+    /**
+     * @brief Constructor for the HC06_Bluetooth class.
+     * @param TX The pin that the TX line is attached to.
+     * @param RX The pin that the RX line is attached to.
+     * @param deviceName The name that you want your system to be identified as when you connect to it i.e. "Weimen's MAE433Robot"
+     * @param password A 4-digit numeric PIN that you want your device to connect with. It defaults to "1234".
+     * @param lineCallbackFunc The callback function that will be called once a newline character is encountered on the receiving data.
+     * The callback function takes as an argument a string containing the line that has been read.
+     * @remark The callback function is run within within an interrupt service routine, so it should be written to be safe for ISRs.
+     * @param charCallbackFunc A function that will be called once a new character has been read. It should return void and take as an argument
+     * the character that has been read.
+     */
+    HC06Bluetooth(PinName TX, PinName RX, void (*lineCallbackFunc) (const char* readString) = NULL, void (*charCallbackFunc) (char readChar) = NULL);
+    virtual ~HC06Bluetooth();
+    /**
+     * @brief Run the setup routine to configure the device name and the device pin.
+     * @remark: You only need to run this once during the entire time you have the module, since the device name and PIN are saved
+     * by the module itself! However, you may run the function again if you would like to change the deviceName or PIN.
+     * @param deviceName The name of the device, as a string. It must only contain alphanumeric characters - no spaces allowed.
+     * @param PIN The device PIN.
+     */
+    void runSetup(std::string deviceName, std::string PIN = "1234");
+    /**
+     * @brief Print information in buffer to the output.
+     * @param buffer A null-terminated buffer containing the data you want to send.
+     */
+    void print(const char *buffer);
+    /**
+     * @brief Print a character to output.
+     * @param char The character you want to print to output.
+     */
+    void print(char c);
+
+private:
+    RawSerial btSerialObj;
+    void receiveByteISR();
+    /// Pointer to a callback function the client provides when a line is received.
+    void (*lineCallbackFunc) (const char*);
+    /// Pointer to a callback function the client provides when a character is received.
+    void (*charCallbackFunc) (char);
+    char dataReceivedBuffer[256];
+    int32_t dataReceivedBufferPos;
+    char dataReceivedBufferCopy[256];
+};
+
+#endif /* HC06BLUETOOTH_H_ */