LoRa模块sx126x驱动

/*! * \file radio.c * * \brief Radio driver API definition * * \copyright Revised BSD License, see section \ref LICENSE. * * \code * ______ _ * / _____) _ | | * ( (____ _____ ____ _| |_ _____ ____| |__ * \____ \| ___ | (_ _) ___ |/ ___) _ \ * _____) ) ____| | | || |_| ____( (___| | | | * (______/|_____)_|_|_| \__)_____)\____)_| |_| * (C)2013-2017 Semtech * * \endcode * * \author Miguel Luis ( Semtech ) * * \author Gregory Cristian ( Semtech ) */ #include <math.h> #include <string.h> #include "radio.h" #include "./SYSTEM/delay/delay.h" #include "./BSP/SX1262/SX1262.h" #include "./BSP/SX1262/SX1262_hal.h" /*! * \brief Initializes the radio * * \param [IN] events Structure containing the driver callback functions */ void RadioInit( RadioEvents_t *events ); /*! * Return current radio status * * \param status Radio status.[RF_IDLE, RF_RX_RUNNING, RF_TX_RUNNING] */ RadioState_t RadioGetStatus( void ); /*! * \brief Configures the radio with the given modem * * \param [IN] modem Modem to be used [0: FSK, 1: LoRa] */ void RadioSetModem( RadioModems_t modem ); /*! * \brief Sets the channel frequency * * \param [IN] freq Channel RF frequency */ void RadioSetChannel( uint32_t freq ); /*! * \brief Checks if the channel is free for the given time * * \remark The FSK modem is always used for this task as we can select the Rx bandwidth at will. * * \param [IN] freq Channel RF frequency in Hertz * \param [IN] rxBandwidth Rx bandwidth in Hertz * \param [IN] rssiThresh RSSI threshold in dBm * \param [IN] maxCarrierSenseTime Max time in milliseconds while the RSSI is measured * * \retval isFree [true: Channel is free, false: Channel is not free] */ bool RadioIsChannelFree( uint32_t freq, uint32_t rxBandwidth, int16_t rssiThresh, uint32_t maxCarrierSenseTime ); /*! * \brief Generates a 32 bits random value based on the RSSI readings * * \remark This function sets the radio in LoRa modem mode and disables * all interrupts. * After calling this function either Radio.SetRxConfig or * Radio.SetTxConfig functions must be called. * * \retval randomValue 32 bits random value */ uint32_t RadioRandom( void ); /*! * \brief Sets the reception parameters * * \param [IN] modem Radio modem to be used [0: FSK, 1: LoRa] * \param [IN] bandwidth Sets the bandwidth * FSK : >= 2600 and <= 250000 Hz * LoRa: [0: 125 kHz, 1: 250 kHz, * 2: 500 kHz, 3: Reserved] * \param [IN] datarate Sets the Datarate * FSK : 600..300000 bits/s * LoRa: [6: 64, 7: 128, 8: 256, 9: 512, * 10: 1024, 11: 2048, 12: 4096 chips] * \param [IN] coderate Sets the coding rate (LoRa only) * FSK : N/A ( set to 0 ) * LoRa: [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8] * \param [IN] bandwidthAfc Sets the AFC Bandwidth (FSK only) * FSK : >= 2600 and <= 250000 Hz * LoRa: N/A ( set to 0 ) * \param [IN] preambleLen Sets the Preamble length * FSK : Number of bytes * LoRa: Length in symbols (the hardware adds 4 more symbols) * \param [IN] symbTimeout Sets the RxSingle timeout value * FSK : timeout in number of bytes * LoRa: timeout in symbols * \param [IN] fixLen Fixed length packets [0: variable, 1: fixed] * \param [IN] payloadLen Sets payload length when fixed length is used * \param [IN] crcOn Enables/Disables the CRC [0: OFF, 1: ON] * \param [IN] FreqHopOn Enables disables the intra-packet frequency hopping * FSK : N/A ( set to 0 ) * LoRa: [0: OFF, 1: ON] * \param [IN] HopPeriod Number of symbols between each hop * FSK : N/A ( set to 0 ) * LoRa: Number of symbols * \param [IN] iqInverted Inverts IQ signals (LoRa only) * FSK : N/A ( set to 0 ) * LoRa: [0: not inverted, 1: inverted] * \param [IN] rxContinuous Sets the reception in continuous mode * [false: single mode, true: continuous mode] */ void RadioSetRxConfig( RadioModems_t modem, uint32_t bandwidth, uint32_t datarate, uint8_t coderate, uint32_t bandwidthAfc, uint16_t preambleLen, uint16_t symbTimeout, bool fixLen, uint8_t payloadLen, bool crcOn, bool FreqHopOn, uint8_t HopPeriod, bool iqInverted, bool rxContinuous ); /*! * \brief Sets the transmission parameters * * \param [IN] modem Radio modem to be used [0: FSK, 1: LoRa] * \param [IN] power Sets the output power [dBm] * \param [IN] fdev Sets the frequency deviation (FSK only) * FSK : [Hz] * LoRa: 0 * \param [IN] bandwidth Sets the bandwidth (LoRa only) * FSK : 0 * LoRa: [0: 125 kHz, 1: 250 kHz, * 2: 500 kHz, 3: Reserved] * \param [IN] datarate Sets the Datarate * FSK : 600..300000 bits/s * LoRa: [6: 64, 7: 128, 8: 256, 9: 512, * 10: 1024, 11: 2048, 12: 4096 chips] * \param [IN] coderate Sets the coding rate (LoRa only) * FSK : N/A ( set to 0 ) * LoRa: [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8] * \param [IN] preambleLen Sets the preamble length * FSK : Number of bytes * LoRa: Length in symbols (the hardware adds 4 more symbols) * \param [IN] fixLen Fixed length packets [0: variable, 1: fixed] * \param [IN] crcOn Enables disables the CRC [0: OFF, 1: ON] * \param [IN] FreqHopOn Enables disables the intra-packet frequency hopping * FSK : N/A ( set to 0 ) * LoRa: [0: OFF, 1: ON] * \param [IN] HopPeriod Number of symbols between each hop * FSK : N/A ( set to 0 ) * LoRa: Number of symbols * \param [IN] iqInverted Inverts IQ signals (LoRa only) * FSK : N/A ( set to 0 ) * LoRa: [0: not inverted, 1: inverted] * \param [IN] timeout Transmission timeout [ms] */ void RadioSetTxConfig( RadioModems_t modem, int8_t power, uint32_t fdev, uint32_t bandwidth, uint32_t datarate, uint8_t coderate, uint16_t preambleLen, bool fixLen, bool crcOn, bool FreqHopOn, uint8_t HopPeriod, bool iqInverted, uint32_t timeout ); /*! * \brief Checks if the given RF frequency is supported by the hardware * * \param [IN] frequency RF frequency to be checked * \retval isSupported [true: supported, false: unsupported] */ bool RadioCheckRfFrequency( uint32_t frequency ); /*! * \brief Computes the packet time on air in ms for the given payload * * \Remark Can only be called once SetRxConfig or SetTxConfig have been called * * \param [IN] modem Radio modem to be used [0: FSK, 1: LoRa] * \param [IN] bandwidth Sets the bandwidth * FSK : >= 2