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144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
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/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2015 Intel Corporation.
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*
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* Thanks to Adafruit for supplying a google translated version of the
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* Chinese datasheet and some clues in their code.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include <string>
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#include <iostream>
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#include <stdint.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <termios.h>
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#include <sys/time.h>
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#include <sys/select.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <mraa/uart.h>
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#define HM11_DEFAULT_UART 0
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namespace upm {
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/**
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* @brief UPM library for the HM-11 Bluetooth 4.0 Low Energy Module
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* @defgroup hm11 libupm-hm11
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* @ingroup seeed serial wifi
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*/
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/**
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* @library hm11
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* @sensor hm11
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* @comname HM-11 Bluetooth 4.0 Low Energy Module
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* @altname HM-10, HM-12
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* @category wifi
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* @manufacturer seeed
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* @connection uart
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* @web http://www.seeedstudio.com/wiki/images/c/cd/Bluetooth4_en.pdf
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*
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* @brief C++ API HM-11 4.0 Bluetooth Low Energy Module
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*
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* The driver was tested with the Grove BLE module. Its an HM-11
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* BLE 4.0 module based on a TI CC2541 chip. It operates using a
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* standard 'AT' command set. See the datasheet for a full list
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* of available commands and their possible responses.
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*
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* http://www.seeedstudio.com/wiki/images/c/cd/Bluetooth4_en.pdf
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*
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* It is connected via a UART at 9600 baud.
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*
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* @snippet hm11.cxx Interesting
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*/
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class HM11 {
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public:
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/**
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* HM11 module constructor
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*
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* @param uart default uart to use (0 or 1)
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*/
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HM11(int uart);
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/**
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* HM11 module Destructor
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*/
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~HM11();
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/**
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* check to see if there is data available for reading
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*
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* @param millis number of milliseconds to wait, 0 means no wait.
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* @return true if there is data available to be read
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*/
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bool dataAvailable(unsigned int millis);
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/**
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* read any available data into a user-supplied buffer. Note, the
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* call will block until data is available to be read. Use
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* dataAvailable() to determine whether there is data available
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* beforehand, to avoid blocking.
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*
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* @param buffer the buffer to hold the data read
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* @param len the length of the buffer
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* @return the number of bytes read
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*/
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int readData(char *buffer, size_t len);
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/**
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* write the data in buffer to the device
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*
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* @param buffer the buffer to hold the data read
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* @param len the length of the buffer
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* @return the number of bytes written
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*/
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int writeData(char *buffer, size_t len);
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/**
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* setup the proper tty i/o modes and the baudrate. The default
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* baud rate is 9600 (B9600) for this device.
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*
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* @param baud the desired baud rate.
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* @return true if successful
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*/
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bool setupTty(speed_t baud=B9600);
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protected:
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int ttyFd() { return m_ttyFd; };
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int setTtyFd(int fd) { m_ttyFd = fd; };
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private:
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mraa_uart_context m_uart;
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int m_ttyFd;
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};
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}
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