Bluetooth UART support for the Adafruit BluefruitLE SPI, for the University of York Engineering Stage 1 project
Adafruit_BluefruitLE_SPI.h
- Committer:
- ajp109
- Date:
- 2021-03-12
- Revision:
- 2:8c341bac60b8
- Parent:
- 0:a80552d32b80
File content as of revision 2:8c341bac60b8:
/**************************************************************************/ /*! @file Adafruit_BluefruiLE_SPI.h @author hathach, ktown (Adafruit Industries), ajp109 (University of York) @section LICENSE Software License Agreement (BSD License) Copyright (c) 2015, Adafruit Industries (adafruit.com) All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holders nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /**************************************************************************/ #ifndef _ADAFRUIT_BLE_SPI_H_ #define _ADAFRUIT_BLE_SPI_H_ #include <Adafruit_BLE.h> #include "utility/Adafruit_FIFO.h" #define SPI_IGNORED_BYTE 0xFEu /**< SPI default character. Character clocked out in case of an ignored transaction. */ #define SPI_OVERREAD_BYTE 0xFFu /**< SPI over-read character. Character clocked out after an over-read of the transmit buffer. */ #define SPI_DEFAULT_DELAY_US 50 #define memclr(buffer, size) memset(buffer, 0, size) class Adafruit_BluefruitLE_SPI : public Adafruit_BLE { private: // Hardware Pin SPI m_spi; DigitalOut m_cs; InterruptIn m_irq; DigitalOut m_rst; // TX uint8_t m_tx_buffer[SDEP_MAX_PACKETSIZE]; uint8_t m_tx_count; // RX uint8_t m_rx_buffer[BLE_BUFSIZE]; Adafruit_FIFO m_rx_fifo; bool m_mode_switch_command_enabled; // Low level transportation I/O functions bool sendInitializePattern(void); bool sendPacket(uint16_t command, const uint8_t* buffer, uint8_t count, uint8_t more_data); bool getPacket(sdepMsgResponse_t* p_response); bool getResponse(void); void simulateSwitchMode(void); // bool handleSwitchCmdInDataMode(uint8_t ch); uint8_t spixfer(uint8_t x); void spixfer(void *x, size_t len); public: // Constructor Adafruit_BluefruitLE_SPI(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName irq, PinName rst = NC); // HW initialisation bool begin(bool v = false, bool blocking = true); void end(void); bool setMode(uint8_t new_mode); void enableModeSwitchCommand(bool enabled); // Override Stream virtual ssize_t write(const void *buf, size_t size); virtual int sync(); protected: // Class Stream interface (Arduino) virtual int available(void); virtual int _putc(int c); virtual int _getc(); }; #endif