Driver for the JY-MCU v1.06 HC-06 Bluetooth module.
Dependents: DISCO-F746NG_rtos_test MbedTableControl
HC06Bluetooth.h
- Committer:
- Electrotiger
- Date:
- 2016-08-03
- Revision:
- 15:6a0aeaa39291
- Parent:
- 12:5ba022adbbfb
- Child:
- 16:1030b80a28f4
File content as of revision 15:6a0aeaa39291:
/* * HC06Bluetooth.cpp * * Created on: Jun 4, 2016 * Author: Developer */ #include <HC06Bluetooth.h> #include <algorithm> /* Static methods used to help configure the Baudrate. */ // WARNING: DO NOT CHANGE THESE VALUES, AS THEY ARE USED TO INDEX INTO AN ARRAY FOR IMPLEMENTATION. const char* BaudATString[] = {"AT+BAUD1", "AT+BAUD2", "AT+BAUD3", "AT+BAUD4", "AT+BAUD5", "AT+BAUD6", "AT+BAUD7", "AT+BAUD8", "AT+BAUD9", "AT+BAUDA", "AT+BAUDB", "AT+BAUDC"}; const int32_t BaudATReplyLength[] = {6, 6, 6, 6, 7, 7, 7, 8, 8, 8, 8, 9}; //const char* BaudATReplyPattern[] = {"OK1200", "OK2400", "OK4800","OK9600","OK19200","OK38400","OK57600","OK115200","OK230400","OK460800","OK921600","OK1382400"}; const int32_t BaudValue[] = {1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600, 1382400}; /* HC06 Bluetooth Class Implementation: */ HC06Bluetooth::HC06Bluetooth(PinName TX, PinName RX, Baudrate baudrate, void (*lineCallbackFunc) (const char* readString, size_t strlen), void (*charCallbackFunc) (char readChar)) : btSerialObj(TX, RX), baudrate(baudrate), lineCallbackFunc(lineCallbackFunc), charCallbackFunc(charCallbackFunc), dataReceivedBufferPos(0) { btSerialObj.baud(BaudValue[baudrate]); // Set the interrupt to be called when a byte is received. if ((lineCallbackFunc != NULL) || (charCallbackFunc != NULL)) { btSerialObj.attach(this, &HC06Bluetooth::receiveByteISR); } } void HC06Bluetooth::runSetup(std::string deviceName, std::string PIN) { int numCharsReceived = 0; // Detatch the interrupt. btSerialObj.attach(NULL); /* Sweep through a list of Baud rates until we find the one that the device has previously been set to. */ bool baudFound = false; Timer timeOut; timeOut.start(); // For every baud rate in the list: for (volatile int i = 0; (i < END) && (!baudFound); i++) { // Set the communication baud rate to it. btSerialObj.baud(BaudValue[i]); // Send the test command "AT" to the device. btSerialObj.puts("AT"); // While the time out has not been reached: for(timeOut.reset(); timeOut.read_ms() < 1000; ) { // If the serial object is readable, make sure the read character matches the reply string "OK". if (btSerialObj.readable() && !baudFound) { baudFound = true; break; } } } // Flush whatever's in the input buffer. while(btSerialObj.readable()) { btSerialObj.getc(); } //Overwrite the Baud rate to 115200. btSerialObj.puts(BaudATString[baudrate]); btSerialObj.baud(BaudValue[baudrate]); // Wait for the 8 character reply "OK115200" for(numCharsReceived = 0 ; numCharsReceived < BaudATReplyLength[baudrate]; numCharsReceived++) { //while(!btSerialObj.readable()); //btSerialObj.getc(); } wait_ms(1000); // Set the name of the device. btSerialObj.puts(("AT+NAME" + deviceName.substr(0,20)).c_str()); // Wait for the 6 character reply "OKname" for(numCharsReceived = 0 ; numCharsReceived < 6; numCharsReceived++) { //while(!btSerialObj.readable()); //btSerialObj.getc(); } wait_ms(1000); //Set the password of the device. btSerialObj.puts(("AT+PIN" + PIN.substr(0, 4)).c_str()); // Wait for the 8 character reply "OKsetpin" for(numCharsReceived = 0 ; numCharsReceived < 8; numCharsReceived++) { //while(!btSerialObj.readable()); //btSerialObj.getc(); } wait_ms(1000); // Reattach the interrupt. btSerialObj.attach(this, &HC06Bluetooth::receiveByteISR); } HC06Bluetooth::~HC06Bluetooth() { // TODO Auto-generated destructor stub } void HC06Bluetooth::print(const char* buffer) { // TODO: Code hangs if buffer is too long! Not sure why. btSerialObj.puts(buffer); } void HC06Bluetooth::println(const char* buffer) { btSerialObj.puts(buffer); btSerialObj.putc('\n'); } void HC06Bluetooth::print(char c) { btSerialObj.putc(c); } void HC06Bluetooth::receiveByteISR() { while(btSerialObj.readable()) { // Get the character from the input. char receivedChar = btSerialObj.getc(); // Call the character callback function if it is not null. if (charCallbackFunc != NULL) { charCallbackFunc(receivedChar); } if (lineCallbackFunc != NULL) { // If the character is a newline or carriage return, then call the line callback function. if ((receivedChar == '\n') || (receivedChar == '\r')) { // Terminate the buffer with a null character, since that is what strings end with. receivedChar = '\0'; dataReceivedBuffer[dataReceivedBufferPos] = receivedChar; dataReceivedBufferPos++; // Copy data from the buffer to a copy. std::copy(dataReceivedBuffer, dataReceivedBuffer + dataReceivedBufferPos, dataReceivedBufferCopy); // Call the callback function. if (lineCallbackFunc != NULL) { lineCallbackFunc((const char*)dataReceivedBuffer, dataReceivedBufferPos); } // Reset the buffer position. dataReceivedBufferPos = 0; } // Otherwise, just place it in the buffer and move on. else { if (dataReceivedBufferPos < dataBufferSize) { dataReceivedBuffer[dataReceivedBufferPos] = receivedChar; dataReceivedBufferPos++; } } } } }