![](/media/cache/group/Advantech_logo.jpg.50x50_q85.jpg)
Generic Pelion Device Management example for various Advantech modules.
This example is known to work great on the following platforms:
- WISE-1530 WiFi Module using DB-1505 carrier board and external SD card reader.
Example Functionality
This example showcases the following device functionality:
- On timer button increment, simulate Pelion LWM2M button resource change
Use this example with Mbed CLI
1. Import the application into your desktop:
mbed import https://os.mbed.com/teams/Advantech/code/pelion-example-common cd pelion-example-common
2. Download your developer certificate from pelion portal
3. Compile the program
mbed compile -t <toolchain> -m <TARGET_BOARD>
(supported toolchains : GCC_ARM / ARM / IAR)
4. Copy the binary file pelion-example-common.bin to your mbed device.
Diff: drivers/network/COMPONENT_WIFI_ISM43362/ISM43362/ATParser/BufferedSpi/BufferedSpi.h
- Revision:
- 0:43ff9e3bc244
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/drivers/network/COMPONENT_WIFI_ISM43362/ISM43362/ATParser/BufferedSpi/BufferedSpi.h Tue Mar 12 13:48:39 2019 +0800 @@ -0,0 +1,234 @@ + +/** + * @file BufferedSpi.h + * @brief Software Buffer - Extends mbed SPI functionallity + * @author Armelle Duboc + * @version 1.0 + * @see + * + * Copyright (c) STMicroelectronics 2017 + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef BUFFEREDSPI_H +#define BUFFEREDSPI_H + +#include "mbed.h" +#include "MyBuffer.h" + +/** A spi port (SPI) for communication with wifi device + * + * Can be used for Full Duplex communication, or Simplex by specifying + * one pin as NC (Not Connected) + * + * Example: + * @code + * #include "mbed.h" + * #include "BufferedSerial.h" + * + * BufferedSerial pc(USBTX, USBRX); + * + * int main() + * { + * while(1) + * { + * Timer s; + * + * s.start(); + * pc.printf("Hello World - buffered\n"); + * int buffered_time = s.read_us(); + * wait(0.1f); // give time for the buffer to empty + * + * s.reset(); + * printf("Hello World - blocking\n"); + * int polled_time = s.read_us(); + * s.stop(); + * wait(0.1f); // give time for the buffer to empty + * + * pc.printf("printf buffered took %d us\n", buffered_time); + * pc.printf("printf blocking took %d us\n", polled_time); + * wait(0.5f); + * } + * } + * @endcode + */ + +/** + * @class BufferedSpi + * @brief Software buffers and interrupt driven tx and rx for Serial + */ +class BufferedSpi : public SPI { +private: + DigitalOut nss; + MyBuffer <char> _txbuf; + uint32_t _buf_size; + uint32_t _tx_multiple; + volatile int _timeout; + void txIrq(void); + void prime(void); + + InterruptIn *_datareadyInt; + volatile int _cmddata_rdy_rising_event; + void DatareadyRising(void); + int wait_cmddata_rdy_rising_event(void); + int wait_cmddata_rdy_high(void); + + + Callback<void()> _cbs[2]; + + Callback<void()> _sigio_cb; + uint8_t _sigio_event; + +public: + MyBuffer <char> _rxbuf; + DigitalIn dataready; + enum IrqType { + RxIrq = 0, + TxIrq, + + IrqCnt + }; + + /** Create a BufferedSpi Port, connected to the specified transmit and receive pins + * @param SPI mosi pin + * @param SPI miso pin + * @param SPI sclk pin + * @param SPI nss pin + * @param Dataready pin + * @param buf_size printf() buffer size + * @param tx_multiple amount of max printf() present in the internal ring buffer at one time + * @param name optional name + */ + BufferedSpi(PinName mosi, PinName miso, PinName sclk, PinName nss, PinName datareadypin, uint32_t buf_size = 2500, uint32_t tx_multiple = 1, const char *name = NULL); + + /** Destroy a BufferedSpi Port + */ + virtual ~BufferedSpi(void); + + /** call to SPI frequency Function + */ + virtual void frequency(int hz); + + /** clear the transmit buffer + */ + virtual void flush_txbuf(void); + + /** call to SPI format function + */ + virtual void format(int bits, int mode); + + virtual void enable_nss(void); + + virtual void disable_nss(void); + + /** Check on how many bytes are in the rx buffer + * @return 1 if something exists, 0 otherwise + */ + virtual int readable(void); + + /** Check to see if the tx buffer has room + * @return 1 always has room and can overwrite previous content if too small / slow + */ + virtual int writeable(void); + + /** Get a single byte from the BufferedSpi Port. + * Should check readable() before calling this. + * @return A byte that came in on the SPI Port + */ + virtual int getc(void); + + /** Write a single byte to the BufferedSpi Port. + * @param c The byte to write to the SPI Port + * @return The byte that was written to the SPI Port Buffer + */ + virtual int putc(int c); + + /** Write a string to the BufferedSpi Port. Must be NULL terminated + * @param s The string to write to the Spi Port + * @return The number of bytes written to the Spi Port Buffer + */ + virtual int puts(const char *s); + + /** Write a formatted string to the BufferedSpi Port. + * @param format The string + format specifiers to write to the Spi Port + * @return The number of bytes written to the Spi Port Buffer + */ + virtual int printf(const char *format, ...); + + /** Write data to the Buffered Spi Port + * @param s A pointer to data to send + * @param length The amount of data being pointed to + * @return The number of bytes written to the Spi Port Buffer + */ + virtual ssize_t buffwrite(const void *s, std::size_t length); + + /** Send datas to the Spi port that are already present + * in the internal _txbuffer + * @param length + * @return the number of bytes written on the SPI port + */ + virtual ssize_t buffsend(size_t length); + + /** Read data from the Spi Port to the _rxbuf + * @param max: optional. = max sieze of the input read + * @return The number of bytes read from the SPI port and written to the _rxbuf + */ + virtual ssize_t read(); + virtual ssize_t read(uint32_t max); + + /** + * Allows timeout to be changed between commands + * + * @param timeout timeout of the connection in ms + */ + void setTimeout(int timeout) + { + /* this is a safe guard timeout at SPI level in case module is stuck */ + _timeout = timeout; + } + + /** Register a callback once any data is ready for sockets + * @param func Function to call on state change + */ + virtual void sigio(Callback<void()> func); + + /** Attach a function to call whenever a serial interrupt is generated + * @param func A pointer to a void function, or 0 to set as none + * @param type Which serial interrupt to attach the member function to (Serial::RxIrq for receive, TxIrq for transmit buffer empty) + */ + virtual void attach(Callback<void()> func, IrqType type = RxIrq); + + /** Attach a member function to call whenever a serial interrupt is generated + * @param obj pointer to the object to call the member function on + * @param method pointer to the member function to call + * @param type Which serial interrupt to attach the member function to (Serial::RxIrq for receive, TxIrq for transmit buffer empty) + */ + template <typename T> + void attach(T *obj, void (T::*method)(), IrqType type = RxIrq) + { + attach(Callback<void()>(obj, method), type); + } + + /** Attach a member function to call whenever a serial interrupt is generated + * @param obj pointer to the object to call the member function on + * @param method pointer to the member function to call + * @param type Which serial interrupt to attach the member function to (Serial::RxIrq for receive, TxIrq for transmit buffer empty) + */ + template <typename T> + void attach(T *obj, void (*method)(T *), IrqType type = RxIrq) + { + attach(Callback<void()>(obj, method), type); + } +}; +#endif