hm11: Initial implementation

This module implements support for the Grove BLE (Bluetooth Low
Energy) device.  It is implemented as a UART device accepting an "AT"
command set.

Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Zion Orent <zorent@ics.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

examples/c++/CMakeLists.txt

@@ -117,6 +117,7 @@ add_executable (isd1820-example isd1820.cxx)
 add_executable (sx6119-example sx6119.cxx)
 add_executable (si114x-example si114x.cxx)
 add_executable (maxsonarez-example maxsonarez.cxx)
+add_executable (hm11-example hm11.cxx)
 
 include_directories (${PROJECT_SOURCE_DIR}/src/hmc5883l)
 include_directories (${PROJECT_SOURCE_DIR}/src/grove)
@@ -212,6 +213,7 @@ include_directories (${PROJECT_SOURCE_DIR}/src/isd1820)
 include_directories (${PROJECT_SOURCE_DIR}/src/sx6119)
 include_directories (${PROJECT_SOURCE_DIR}/src/si114x)
 include_directories (${PROJECT_SOURCE_DIR}/src/maxsonarez)
+include_directories (${PROJECT_SOURCE_DIR}/src/hm11)
 
 target_link_libraries (hmc5883l-example hmc5883l ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (groveled-example grove ${CMAKE_THREAD_LIBS_INIT})
@@ -330,3 +332,4 @@ target_link_libraries (isd1820-example isd1820 ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (sx6119-example sx6119 ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (si114x-example si114x ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (maxsonarez-example maxsonarez ${CMAKE_THREAD_LIBS_INIT})
+target_link_libraries (hm11-example hm11 ${CMAKE_THREAD_LIBS_INIT})

examples/c++/hm11.cxx

@@ -0,0 +1,123 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2015 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * 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 <unistd.h>
+#include <iostream>
+#include <signal.h>
+#include <stdio.h>
+#include "hm11.h"
+
+using namespace std;
+using namespace upm;
+
+void printUsage(char *progname)
+{
+  cout << "Usage: " << progname << " [AT command]" << endl;
+  cout << endl;
+
+  cout << "If an argument is supplied on the command line, that argument is"
+       << endl;
+  cout << "sent to the module and the response is printed out." << endl;
+  cout << endl;
+  cout << "If no argument is used, then the address and PIN of the module" 
+       << endl;
+  cout << "are queried and the results printed out." << endl;
+  cout << endl;
+  cout << endl;
+}
+
+// simple helper function to send a command and wait for a response
+void sendCommand(upm::HM11* ble, char *cmd)
+{
+  char buffer[BUFSIZ];
+  ble->writeData(cmd, strlen(cmd));
+  
+  // wait up to 1 second
+  if (ble->dataAvailable(1000))
+    {
+      memset(buffer, 0, BUFSIZ);
+      
+      ble->readData(buffer, BUFSIZ);
+      cout << "Returned: " << buffer << endl;
+    }
+  else
+    {
+      cerr << "Timed out waiting for response" << endl;
+    }
+}
+
+
+int main (int argc, char **argv)
+{
+//! [Interesting]
+  char buffer[BUFSIZ];
+  // Instantiate a HM11 BLE Module on UART 0
+
+  upm::HM11* ble = new upm::HM11(0);
+
+  // make sure port is initialized properly.  9600 baud is the default.
+  if (!ble->setupTty(B9600))
+    {
+      cerr << "Failed to setup tty port parameters" << endl;
+      return 1;
+    }
+
+  printUsage(argv[0]);
+
+  if (argc > 1)
+    {
+      cout << "Sending command line argument (" << argv[1] << ")..." << endl;
+      sendCommand(ble, argv[1]);
+    }
+  else
+    {
+      // query the module address
+      char addr[] = "AT+ADDR?";
+      cout << "Querying module address (" << addr << ")..." << endl;
+      sendCommand(ble, addr);
+
+      sleep(1);
+
+      // query the module address
+      char pin[] = "AT+PASS?";
+      cout << "Querying module PIN (" << pin << ")..." << endl;
+      sendCommand(ble, pin);
+
+      // Other potentially useful commands are:
+      //
+      // AT+VERS? - query module version
+      // AT+ROLE0 - set as slave
+      // AT+ROLE1 - set as master
+      // AT+CLEAR - clear all previous settings
+      // AT+RESET - restart the device
+      //
+      // A comprehensive list is available from the datasheet at:
+      // http://www.seeedstudio.com/wiki/images/c/cd/Bluetooth4_en.pdf
+    }
+
+//! [Interesting]
+
+  delete ble;
+  return 0;
+}