David Rimer / RadioHead-148

Port of RadioHead version 1.48 to mbed. It is a little messy and only works for SPI at this time.

RH_RF22.cpp@0:ab4e012489ef, 2015-10-15 (annotated)

Committer:
davidr99
Date:
Thu Oct 15 01:27:00 2015 +0000
Revision:
0:ab4e012489ef
Messy start, but a port for RadioHead.; Currently the SPI modulus are the only ones that work.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
davidr99 0:ab4e012489ef 1 // RH_RF22.cpp
davidr99 0:ab4e012489ef 2 //
davidr99 0:ab4e012489ef 3 // Copyright (C) 2011 Mike McCauley
davidr99 0:ab4e012489ef 4 // $Id: RH_RF22.cpp,v 1.24 2015/05/17 00:11:26 mikem Exp $
davidr99 0:ab4e012489ef 5
davidr99 0:ab4e012489ef 6 #include <RH_RF22.h>
davidr99 0:ab4e012489ef 7
davidr99 0:ab4e012489ef 8 // Interrupt vectors for the 2 Arduino interrupt pins
davidr99 0:ab4e012489ef 9 // Each interrupt can be handled by a different instance of RH_RF22, allowing you to have
davidr99 0:ab4e012489ef 10 // 2 RH_RF22s per Arduino
davidr99 0:ab4e012489ef 11 RH_RF22* RH_RF22::_deviceForInterrupt[RH_RF22_NUM_INTERRUPTS] = {0, 0, 0};
davidr99 0:ab4e012489ef 12 uint8_t RH_RF22::_interruptCount = 0; // Index into _deviceForInterrupt for next device
davidr99 0:ab4e012489ef 13
davidr99 0:ab4e012489ef 14 // These are indexed by the values of ModemConfigChoice
davidr99 0:ab4e012489ef 15 // Canned modem configurations generated with
davidr99 0:ab4e012489ef 16 // http://www.hoperf.com/upload/rf/RH_RF22B%2023B%2031B%2042B%2043B%20Register%20Settings_RevB1-v5.xls
davidr99 0:ab4e012489ef 17 // Stored in flash (program) memory to save SRAM
davidr99 0:ab4e012489ef 18 PROGMEM static const RH_RF22::ModemConfig MODEM_CONFIG_TABLE[] =
davidr99 0:ab4e012489ef 19 {
davidr99 0:ab4e012489ef 20 { 0x2b, 0x03, 0xf4, 0x20, 0x41, 0x89, 0x00, 0x36, 0x40, 0x0a, 0x1d, 0x80, 0x60, 0x10, 0x62, 0x2c, 0x00, 0x08 }, // Unmodulated carrier
davidr99 0:ab4e012489ef 21 { 0x2b, 0x03, 0xf4, 0x20, 0x41, 0x89, 0x00, 0x36, 0x40, 0x0a, 0x1d, 0x80, 0x60, 0x10, 0x62, 0x2c, 0x33, 0x08 }, // FSK, PN9 random modulation, 2, 5
davidr99 0:ab4e012489ef 22
davidr99 0:ab4e012489ef 23 // All the following enable FIFO with reg 71
davidr99 0:ab4e012489ef 24 // 1c, 1f, 20, 21, 22, 23, 24, 25, 2c, 2d, 2e, 58, 69, 6e, 6f, 70, 71, 72
davidr99 0:ab4e012489ef 25 // FSK, No Manchester, Max Rb err <1%, Xtal Tol 20ppm
davidr99 0:ab4e012489ef 26 { 0x2b, 0x03, 0xf4, 0x20, 0x41, 0x89, 0x00, 0x36, 0x40, 0x0a, 0x1d, 0x80, 0x60, 0x10, 0x62, 0x2c, 0x22, 0x08 }, // 2, 5
davidr99 0:ab4e012489ef 27 { 0x1b, 0x03, 0x41, 0x60, 0x27, 0x52, 0x00, 0x07, 0x40, 0x0a, 0x1e, 0x80, 0x60, 0x13, 0xa9, 0x2c, 0x22, 0x3a }, // 2.4, 36
davidr99 0:ab4e012489ef 28 { 0x1d, 0x03, 0xa1, 0x20, 0x4e, 0xa5, 0x00, 0x13, 0x40, 0x0a, 0x1e, 0x80, 0x60, 0x27, 0x52, 0x2c, 0x22, 0x48 }, // 4.8, 45
davidr99 0:ab4e012489ef 29 { 0x1e, 0x03, 0xd0, 0x00, 0x9d, 0x49, 0x00, 0x45, 0x40, 0x0a, 0x20, 0x80, 0x60, 0x4e, 0xa5, 0x2c, 0x22, 0x48 }, // 9.6, 45
davidr99 0:ab4e012489ef 30 { 0x2b, 0x03, 0x34, 0x02, 0x75, 0x25, 0x07, 0xff, 0x40, 0x0a, 0x1b, 0x80, 0x60, 0x9d, 0x49, 0x2c, 0x22, 0x0f }, // 19.2, 9.6
davidr99 0:ab4e012489ef 31 { 0x02, 0x03, 0x68, 0x01, 0x3a, 0x93, 0x04, 0xd5, 0x40, 0x0a, 0x1e, 0x80, 0x60, 0x09, 0xd5, 0x0c, 0x22, 0x1f }, // 38.4, 19.6
davidr99 0:ab4e012489ef 32 { 0x06, 0x03, 0x45, 0x01, 0xd7, 0xdc, 0x07, 0x6e, 0x40, 0x0a, 0x2d, 0x80, 0x60, 0x0e, 0xbf, 0x0c, 0x22, 0x2e }, // 57.6. 28.8
davidr99 0:ab4e012489ef 33 { 0x8a, 0x03, 0x60, 0x01, 0x55, 0x55, 0x02, 0xad, 0x40, 0x0a, 0x50, 0x80, 0x60, 0x20, 0x00, 0x0c, 0x22, 0xc8 }, // 125, 125
davidr99 0:ab4e012489ef 34
davidr99 0:ab4e012489ef 35 { 0x2b, 0x03, 0xa1, 0xe0, 0x10, 0xc7, 0x00, 0x09, 0x40, 0x0a, 0x1d, 0x80, 0x60, 0x04, 0x32, 0x2c, 0x22, 0x04 }, // 512 baud, FSK, 2.5 Khz fd for POCSAG compatibility
davidr99 0:ab4e012489ef 36 { 0x27, 0x03, 0xa1, 0xe0, 0x10, 0xc7, 0x00, 0x06, 0x40, 0x0a, 0x1d, 0x80, 0x60, 0x04, 0x32, 0x2c, 0x22, 0x07 }, // 512 baud, FSK, 4.5 Khz fd for POCSAG compatibility
davidr99 0:ab4e012489ef 37
davidr99 0:ab4e012489ef 38 // GFSK, No Manchester, Max Rb err <1%, Xtal Tol 20ppm
davidr99 0:ab4e012489ef 39 // These differ from FSK only in register 71, for the modulation type
davidr99 0:ab4e012489ef 40 { 0x2b, 0x03, 0xf4, 0x20, 0x41, 0x89, 0x00, 0x36, 0x40, 0x0a, 0x1d, 0x80, 0x60, 0x10, 0x62, 0x2c, 0x23, 0x08 }, // 2, 5
davidr99 0:ab4e012489ef 41 { 0x1b, 0x03, 0x41, 0x60, 0x27, 0x52, 0x00, 0x07, 0x40, 0x0a, 0x1e, 0x80, 0x60, 0x13, 0xa9, 0x2c, 0x23, 0x3a }, // 2.4, 36
davidr99 0:ab4e012489ef 42 { 0x1d, 0x03, 0xa1, 0x20, 0x4e, 0xa5, 0x00, 0x13, 0x40, 0x0a, 0x1e, 0x80, 0x60, 0x27, 0x52, 0x2c, 0x23, 0x48 }, // 4.8, 45
davidr99 0:ab4e012489ef 43 { 0x1e, 0x03, 0xd0, 0x00, 0x9d, 0x49, 0x00, 0x45, 0x40, 0x0a, 0x20, 0x80, 0x60, 0x4e, 0xa5, 0x2c, 0x23, 0x48 }, // 9.6, 45
davidr99 0:ab4e012489ef 44 { 0x2b, 0x03, 0x34, 0x02, 0x75, 0x25, 0x07, 0xff, 0x40, 0x0a, 0x1b, 0x80, 0x60, 0x9d, 0x49, 0x2c, 0x23, 0x0f }, // 19.2, 9.6
davidr99 0:ab4e012489ef 45 { 0x02, 0x03, 0x68, 0x01, 0x3a, 0x93, 0x04, 0xd5, 0x40, 0x0a, 0x1e, 0x80, 0x60, 0x09, 0xd5, 0x0c, 0x23, 0x1f }, // 38.4, 19.6
davidr99 0:ab4e012489ef 46 { 0x06, 0x03, 0x45, 0x01, 0xd7, 0xdc, 0x07, 0x6e, 0x40, 0x0a, 0x2d, 0x80, 0x60, 0x0e, 0xbf, 0x0c, 0x23, 0x2e }, // 57.6. 28.8
davidr99 0:ab4e012489ef 47 { 0x8a, 0x03, 0x60, 0x01, 0x55, 0x55, 0x02, 0xad, 0x40, 0x0a, 0x50, 0x80, 0x60, 0x20, 0x00, 0x0c, 0x23, 0xc8 }, // 125, 125
davidr99 0:ab4e012489ef 48
davidr99 0:ab4e012489ef 49 // OOK, No Manchester, Max Rb err <1%, Xtal Tol 20ppm
davidr99 0:ab4e012489ef 50 { 0x51, 0x03, 0x68, 0x00, 0x3a, 0x93, 0x01, 0x3d, 0x2c, 0x11, 0x28, 0x80, 0x60, 0x09, 0xd5, 0x2c, 0x21, 0x08 }, // 1.2, 75
davidr99 0:ab4e012489ef 51 { 0xc8, 0x03, 0x39, 0x20, 0x68, 0xdc, 0x00, 0x6b, 0x2a, 0x08, 0x2a, 0x80, 0x60, 0x13, 0xa9, 0x2c, 0x21, 0x08 }, // 2.4, 335
davidr99 0:ab4e012489ef 52 { 0xc8, 0x03, 0x9c, 0x00, 0xd1, 0xb7, 0x00, 0xd4, 0x29, 0x04, 0x29, 0x80, 0x60, 0x27, 0x52, 0x2c, 0x21, 0x08 }, // 4.8, 335
davidr99 0:ab4e012489ef 53 { 0xb8, 0x03, 0x9c, 0x00, 0xd1, 0xb7, 0x00, 0xd4, 0x28, 0x82, 0x29, 0x80, 0x60, 0x4e, 0xa5, 0x2c, 0x21, 0x08 }, // 9.6, 335
davidr99 0:ab4e012489ef 54 { 0xa8, 0x03, 0x9c, 0x00, 0xd1, 0xb7, 0x00, 0xd4, 0x28, 0x41, 0x29, 0x80, 0x60, 0x9d, 0x49, 0x2c, 0x21, 0x08 }, // 19.2, 335
davidr99 0:ab4e012489ef 55 { 0x98, 0x03, 0x9c, 0x00, 0xd1, 0xb7, 0x00, 0xd4, 0x28, 0x20, 0x29, 0x80, 0x60, 0x09, 0xd5, 0x0c, 0x21, 0x08 }, // 38.4, 335
davidr99 0:ab4e012489ef 56 { 0x98, 0x03, 0x96, 0x00, 0xda, 0x74, 0x00, 0xdc, 0x28, 0x1f, 0x29, 0x80, 0x60, 0x0a, 0x3d, 0x0c, 0x21, 0x08 }, // 40, 335
davidr99 0:ab4e012489ef 57 };
davidr99 0:ab4e012489ef 58
davidr99 0:ab4e012489ef 59 RH_RF22::RH_RF22(PINS slaveSelectPin, PINS interruptPin, RHGenericSPI& spi)
davidr99 0:ab4e012489ef 60 :
davidr99 0:ab4e012489ef 61 RHSPIDriver(slaveSelectPin, spi),
davidr99 0:ab4e012489ef 62 _interruptPin(interruptPin)
davidr99 0:ab4e012489ef 63 {
davidr99 0:ab4e012489ef 64 _idleMode = RH_RF22_XTON; // Default idle state is READY mode
davidr99 0:ab4e012489ef 65 _polynomial = CRC_16_IBM; // Historical
davidr99 0:ab4e012489ef 66 _myInterruptIndex = 0xff; // Not allocated yet
davidr99 0:ab4e012489ef 67 }
davidr99 0:ab4e012489ef 68
davidr99 0:ab4e012489ef 69 void RH_RF22::setIdleMode(uint8_t idleMode)
davidr99 0:ab4e012489ef 70 {
davidr99 0:ab4e012489ef 71 _idleMode = idleMode;
davidr99 0:ab4e012489ef 72 }
davidr99 0:ab4e012489ef 73
davidr99 0:ab4e012489ef 74 bool RH_RF22::init()
davidr99 0:ab4e012489ef 75 {
davidr99 0:ab4e012489ef 76 if (!RHSPIDriver::init())
davidr99 0:ab4e012489ef 77 return false;
davidr99 0:ab4e012489ef 78
davidr99 0:ab4e012489ef 79 #if (RH_PLATFORM != RH_PLATFORM_MBED)
davidr99 0:ab4e012489ef 80 // Determine the interrupt number that corresponds to the interruptPin
davidr99 0:ab4e012489ef 81 int interruptNumber = digitalPinToInterrupt(_interruptPin);
davidr99 0:ab4e012489ef 82 if (interruptNumber == NOT_AN_INTERRUPT)
davidr99 0:ab4e012489ef 83 return false;
davidr99 0:ab4e012489ef 84 #endif
davidr99 0:ab4e012489ef 85
davidr99 0:ab4e012489ef 86 // Software reset the device
davidr99 0:ab4e012489ef 87 reset();
davidr99 0:ab4e012489ef 88
davidr99 0:ab4e012489ef 89 // Get the device type and check it
davidr99 0:ab4e012489ef 90 // This also tests whether we are really connected to a device
davidr99 0:ab4e012489ef 91 _deviceType = spiRead(RH_RF22_REG_00_DEVICE_TYPE);
davidr99 0:ab4e012489ef 92 if ( _deviceType != RH_RF22_DEVICE_TYPE_RX_TRX
davidr99 0:ab4e012489ef 93 && _deviceType != RH_RF22_DEVICE_TYPE_TX)
davidr99 0:ab4e012489ef 94 {
davidr99 0:ab4e012489ef 95 return false;
davidr99 0:ab4e012489ef 96 }
davidr99 0:ab4e012489ef 97
davidr99 0:ab4e012489ef 98
davidr99 0:ab4e012489ef 99 #if (RH_PLATFORM != RH_PLATFORM_MBED)
davidr99 0:ab4e012489ef 100 // Add by Adrien van den Bossche <vandenbo@univ-tlse2.fr> for Teensy
davidr99 0:ab4e012489ef 101 // ARM M4 requires the below. else pin interrupt doesn't work properly.
davidr99 0:ab4e012489ef 102 // On all other platforms, its innocuous, belt and braces
davidr99 0:ab4e012489ef 103 pinMode(_interruptPin, INPUT);
davidr99 0:ab4e012489ef 104 #endif
davidr99 0:ab4e012489ef 105
davidr99 0:ab4e012489ef 106 // Enable interrupt output on the radio. Interrupt line will now go high until
davidr99 0:ab4e012489ef 107 // an interrupt occurs
davidr99 0:ab4e012489ef 108 spiWrite(RH_RF22_REG_05_INTERRUPT_ENABLE1, RH_RF22_ENTXFFAEM | RH_RF22_ENRXFFAFULL | RH_RF22_ENPKSENT | RH_RF22_ENPKVALID | RH_RF22_ENCRCERROR | RH_RF22_ENFFERR);
davidr99 0:ab4e012489ef 109 spiWrite(RH_RF22_REG_06_INTERRUPT_ENABLE2, RH_RF22_ENPREAVAL);
davidr99 0:ab4e012489ef 110
davidr99 0:ab4e012489ef 111 // Set up interrupt handler
davidr99 0:ab4e012489ef 112 // Since there are a limited number of interrupt glue functions isr*() available,
davidr99 0:ab4e012489ef 113 // we can only support a limited number of devices simultaneously
davidr99 0:ab4e012489ef 114 // On some devices, notably most Arduinos, the interrupt pin passed in is actually the
davidr99 0:ab4e012489ef 115 // interrupt number. You have to figure out the interruptnumber-to-interruptpin mapping
davidr99 0:ab4e012489ef 116 // yourself based on knowledge of what Arduino board you are running on.
davidr99 0:ab4e012489ef 117 if (_myInterruptIndex == 0xff)
davidr99 0:ab4e012489ef 118 {
davidr99 0:ab4e012489ef 119 // First run, no interrupt allocated yet
davidr99 0:ab4e012489ef 120 if (_interruptCount <= RH_RF22_NUM_INTERRUPTS)
davidr99 0:ab4e012489ef 121 _myInterruptIndex = _interruptCount++;
davidr99 0:ab4e012489ef 122 else
davidr99 0:ab4e012489ef 123 return false; // Too many devices, not enough interrupt vectors
davidr99 0:ab4e012489ef 124 }
davidr99 0:ab4e012489ef 125 _deviceForInterrupt[_myInterruptIndex] = this;
davidr99 0:ab4e012489ef 126
davidr99 0:ab4e012489ef 127 #if (RH_PLATFORM == RH_PLATFORM_MBED)
davidr99 0:ab4e012489ef 128 if (_myInterruptIndex == 0)
davidr99 0:ab4e012489ef 129 _interruptPin.fall(&isr0);
davidr99 0:ab4e012489ef 130 else if (_myInterruptIndex == 1)
davidr99 0:ab4e012489ef 131 _interruptPin.fall(&isr1);
davidr99 0:ab4e012489ef 132 else if (_myInterruptIndex == 2)
davidr99 0:ab4e012489ef 133 _interruptPin.fall(&isr2);
davidr99 0:ab4e012489ef 134 else
davidr99 0:ab4e012489ef 135 return false; // Too many devices, not enough interrupt vectors
davidr99 0:ab4e012489ef 136 #else
davidr99 0:ab4e012489ef 137 if (_myInterruptIndex == 0)
davidr99 0:ab4e012489ef 138 attachInterrupt(interruptNumber, isr0, FALLING);
davidr99 0:ab4e012489ef 139 else if (_myInterruptIndex == 1)
davidr99 0:ab4e012489ef 140 attachInterrupt(interruptNumber, isr1, FALLING);
davidr99 0:ab4e012489ef 141 else if (_myInterruptIndex == 2)
davidr99 0:ab4e012489ef 142 attachInterrupt(interruptNumber, isr2, FALLING);
davidr99 0:ab4e012489ef 143 else
davidr99 0:ab4e012489ef 144 return false; // Too many devices, not enough interrupt vectors
davidr99 0:ab4e012489ef 145 #endif
davidr99 0:ab4e012489ef 146
davidr99 0:ab4e012489ef 147 setModeIdle();
davidr99 0:ab4e012489ef 148
davidr99 0:ab4e012489ef 149 clearTxBuf();
davidr99 0:ab4e012489ef 150 clearRxBuf();
davidr99 0:ab4e012489ef 151
davidr99 0:ab4e012489ef 152 // Most of these are the POR default
davidr99 0:ab4e012489ef 153 spiWrite(RH_RF22_REG_7D_TX_FIFO_CONTROL2, RH_RF22_TXFFAEM_THRESHOLD);
davidr99 0:ab4e012489ef 154 spiWrite(RH_RF22_REG_7E_RX_FIFO_CONTROL, RH_RF22_RXFFAFULL_THRESHOLD);
davidr99 0:ab4e012489ef 155 spiWrite(RH_RF22_REG_30_DATA_ACCESS_CONTROL, RH_RF22_ENPACRX | RH_RF22_ENPACTX | RH_RF22_ENCRC | (_polynomial & RH_RF22_CRC));
davidr99 0:ab4e012489ef 156
davidr99 0:ab4e012489ef 157 // Configure the message headers
davidr99 0:ab4e012489ef 158 // Here we set up the standard packet format for use by the RH_RF22 library
davidr99 0:ab4e012489ef 159 // 8 nibbles preamble
davidr99 0:ab4e012489ef 160 // 2 SYNC words 2d, d4
davidr99 0:ab4e012489ef 161 // Header length 4 (to, from, id, flags)
davidr99 0:ab4e012489ef 162 // 1 octet of data length (0 to 255)
davidr99 0:ab4e012489ef 163 // 0 to 255 octets data
davidr99 0:ab4e012489ef 164 // 2 CRC octets as CRC16(IBM), computed on the header, length and data
davidr99 0:ab4e012489ef 165 // On reception the to address is check for validity against RH_RF22_REG_3F_CHECK_HEADER3
davidr99 0:ab4e012489ef 166 // or the broadcast address of 0xff
davidr99 0:ab4e012489ef 167 // If no changes are made after this, the transmitted
davidr99 0:ab4e012489ef 168 // to address will be 0xff, the from address will be 0xff
davidr99 0:ab4e012489ef 169 // and all such messages will be accepted. This permits the out-of the box
davidr99 0:ab4e012489ef 170 // RH_RF22 config to act as an unaddresed, unreliable datagram service
davidr99 0:ab4e012489ef 171 spiWrite(RH_RF22_REG_32_HEADER_CONTROL1, RH_RF22_BCEN_HEADER3 | RH_RF22_HDCH_HEADER3);
davidr99 0:ab4e012489ef 172 spiWrite(RH_RF22_REG_33_HEADER_CONTROL2, RH_RF22_HDLEN_4 | RH_RF22_SYNCLEN_2);
davidr99 0:ab4e012489ef 173
davidr99 0:ab4e012489ef 174 setPreambleLength(8);
davidr99 0:ab4e012489ef 175 uint8_t syncwords[] = { 0x2d, 0xd4 };
davidr99 0:ab4e012489ef 176 setSyncWords(syncwords, sizeof(syncwords));
davidr99 0:ab4e012489ef 177 setPromiscuous(false);
davidr99 0:ab4e012489ef 178
davidr99 0:ab4e012489ef 179 // Set some defaults. An innocuous ISM frequency, and reasonable pull-in
davidr99 0:ab4e012489ef 180 setFrequency(434.0, 0.05);
davidr99 0:ab4e012489ef 181 // setFrequency(900.0);
davidr99 0:ab4e012489ef 182 // Some slow, reliable default speed and modulation
davidr99 0:ab4e012489ef 183 setModemConfig(FSK_Rb2_4Fd36);
davidr99 0:ab4e012489ef 184 // setModemConfig(FSK_Rb125Fd125);
davidr99 0:ab4e012489ef 185 setGpioReversed(false);
davidr99 0:ab4e012489ef 186 // Lowish power
davidr99 0:ab4e012489ef 187 setTxPower(RH_RF22_TXPOW_8DBM);
davidr99 0:ab4e012489ef 188
davidr99 0:ab4e012489ef 189 return true;
davidr99 0:ab4e012489ef 190 }
davidr99 0:ab4e012489ef 191
davidr99 0:ab4e012489ef 192 // C++ level interrupt handler for this instance
davidr99 0:ab4e012489ef 193 void RH_RF22::handleInterrupt()
davidr99 0:ab4e012489ef 194 {
davidr99 0:ab4e012489ef 195 uint8_t _lastInterruptFlags[2];
davidr99 0:ab4e012489ef 196 // Read the interrupt flags which clears the interrupt
davidr99 0:ab4e012489ef 197 spiBurstRead(RH_RF22_REG_03_INTERRUPT_STATUS1, _lastInterruptFlags, 2);
davidr99 0:ab4e012489ef 198
davidr99 0:ab4e012489ef 199 #if 0
davidr99 0:ab4e012489ef 200 // DEVELOPER TESTING ONLY
davidr99 0:ab4e012489ef 201 // Caution: Serial printing in this interrupt routine can cause mysterious crashes
davidr99 0:ab4e012489ef 202 Serial.print("interrupt ");
davidr99 0:ab4e012489ef 203 Serial.print(_lastInterruptFlags[0], HEX);
davidr99 0:ab4e012489ef 204 Serial.print(" ");
davidr99 0:ab4e012489ef 205 Serial.println(_lastInterruptFlags[1], HEX);
davidr99 0:ab4e012489ef 206 if (_lastInterruptFlags[0] == 0 && _lastInterruptFlags[1] == 0)
davidr99 0:ab4e012489ef 207 Serial.println("FUNNY: no interrupt!");
davidr99 0:ab4e012489ef 208 #endif
davidr99 0:ab4e012489ef 209
davidr99 0:ab4e012489ef 210 #if 0
davidr99 0:ab4e012489ef 211 // DEVELOPER TESTING ONLY
davidr99 0:ab4e012489ef 212 // TESTING: fake an RH_RF22_IFFERROR
davidr99 0:ab4e012489ef 213 static int counter = 0;
davidr99 0:ab4e012489ef 214 if (_lastInterruptFlags[0] & RH_RF22_IPKSENT && counter++ == 10)
davidr99 0:ab4e012489ef 215 {
davidr99 0:ab4e012489ef 216 _lastInterruptFlags[0] = RH_RF22_IFFERROR;
davidr99 0:ab4e012489ef 217 counter = 0;
davidr99 0:ab4e012489ef 218 }
davidr99 0:ab4e012489ef 219 #endif
davidr99 0:ab4e012489ef 220
davidr99 0:ab4e012489ef 221 if (_lastInterruptFlags[0] & RH_RF22_IFFERROR)
davidr99 0:ab4e012489ef 222 {
davidr99 0:ab4e012489ef 223 resetFifos(); // Clears the interrupt
davidr99 0:ab4e012489ef 224 if (_mode == RHModeTx)
davidr99 0:ab4e012489ef 225 restartTransmit();
davidr99 0:ab4e012489ef 226 else if (_mode == RHModeRx)
davidr99 0:ab4e012489ef 227 clearRxBuf();
davidr99 0:ab4e012489ef 228 // Serial.println("IFFERROR");
davidr99 0:ab4e012489ef 229 }
davidr99 0:ab4e012489ef 230 // Caution, any delay here may cause a FF underflow or overflow
davidr99 0:ab4e012489ef 231 if (_lastInterruptFlags[0] & RH_RF22_ITXFFAEM)
davidr99 0:ab4e012489ef 232 {
davidr99 0:ab4e012489ef 233 // See if more data has to be loaded into the Tx FIFO
davidr99 0:ab4e012489ef 234 sendNextFragment();
davidr99 0:ab4e012489ef 235 // Serial.println("ITXFFAEM");
davidr99 0:ab4e012489ef 236 }
davidr99 0:ab4e012489ef 237 if (_lastInterruptFlags[0] & RH_RF22_IRXFFAFULL)
davidr99 0:ab4e012489ef 238 {
davidr99 0:ab4e012489ef 239 // Caution, any delay here may cause a FF overflow
davidr99 0:ab4e012489ef 240 // Read some data from the Rx FIFO
davidr99 0:ab4e012489ef 241 readNextFragment();
davidr99 0:ab4e012489ef 242 // Serial.println("IRXFFAFULL");
davidr99 0:ab4e012489ef 243 }
davidr99 0:ab4e012489ef 244 if (_lastInterruptFlags[0] & RH_RF22_IEXT)
davidr99 0:ab4e012489ef 245 {
davidr99 0:ab4e012489ef 246 // This is not enabled by the base code, but users may want to enable it
davidr99 0:ab4e012489ef 247 handleExternalInterrupt();
davidr99 0:ab4e012489ef 248 // Serial.println("IEXT");
davidr99 0:ab4e012489ef 249 }
davidr99 0:ab4e012489ef 250 if (_lastInterruptFlags[1] & RH_RF22_IWUT)
davidr99 0:ab4e012489ef 251 {
davidr99 0:ab4e012489ef 252 // This is not enabled by the base code, but users may want to enable it
davidr99 0:ab4e012489ef 253 handleWakeupTimerInterrupt();
davidr99 0:ab4e012489ef 254 // Serial.println("IWUT");
davidr99 0:ab4e012489ef 255 }
davidr99 0:ab4e012489ef 256 if (_lastInterruptFlags[0] & RH_RF22_IPKSENT)
davidr99 0:ab4e012489ef 257 {
davidr99 0:ab4e012489ef 258 // Serial.println("IPKSENT");
davidr99 0:ab4e012489ef 259 _txGood++;
davidr99 0:ab4e012489ef 260 // Transmission does not automatically clear the tx buffer.
davidr99 0:ab4e012489ef 261 // Could retransmit if we wanted
davidr99 0:ab4e012489ef 262 // RH_RF22 transitions automatically to Idle
davidr99 0:ab4e012489ef 263 _mode = RHModeIdle;
davidr99 0:ab4e012489ef 264 }
davidr99 0:ab4e012489ef 265 if (_lastInterruptFlags[0] & RH_RF22_IPKVALID)
davidr99 0:ab4e012489ef 266 {
davidr99 0:ab4e012489ef 267 uint8_t len = spiRead(RH_RF22_REG_4B_RECEIVED_PACKET_LENGTH);
davidr99 0:ab4e012489ef 268 // Serial.println("IPKVALID");
davidr99 0:ab4e012489ef 269
davidr99 0:ab4e012489ef 270 // May have already read one or more fragments
davidr99 0:ab4e012489ef 271 // Get any remaining unread octets, based on the expected length
davidr99 0:ab4e012489ef 272 // First make sure we dont overflow the buffer in the case of a stupid length
davidr99 0:ab4e012489ef 273 // or partial bad receives
davidr99 0:ab4e012489ef 274 if ( len > RH_RF22_MAX_MESSAGE_LEN
davidr99 0:ab4e012489ef 275 || len < _bufLen)
davidr99 0:ab4e012489ef 276 {
davidr99 0:ab4e012489ef 277 _rxBad++;
davidr99 0:ab4e012489ef 278 _mode = RHModeIdle;
davidr99 0:ab4e012489ef 279 clearRxBuf();
davidr99 0:ab4e012489ef 280 return; // Hmmm receiver buffer overflow.
davidr99 0:ab4e012489ef 281 }
davidr99 0:ab4e012489ef 282
davidr99 0:ab4e012489ef 283 spiBurstRead(RH_RF22_REG_7F_FIFO_ACCESS, _buf + _bufLen, len - _bufLen);
davidr99 0:ab4e012489ef 284 _rxHeaderTo = spiRead(RH_RF22_REG_47_RECEIVED_HEADER3);
davidr99 0:ab4e012489ef 285 _rxHeaderFrom = spiRead(RH_RF22_REG_48_RECEIVED_HEADER2);
davidr99 0:ab4e012489ef 286 _rxHeaderId = spiRead(RH_RF22_REG_49_RECEIVED_HEADER1);
davidr99 0:ab4e012489ef 287 _rxHeaderFlags = spiRead(RH_RF22_REG_4A_RECEIVED_HEADER0);
davidr99 0:ab4e012489ef 288 _rxGood++;
davidr99 0:ab4e012489ef 289 _bufLen = len;
davidr99 0:ab4e012489ef 290 _mode = RHModeIdle;
davidr99 0:ab4e012489ef 291 _rxBufValid = true;
davidr99 0:ab4e012489ef 292 }
davidr99 0:ab4e012489ef 293 if (_lastInterruptFlags[0] & RH_RF22_ICRCERROR)
davidr99 0:ab4e012489ef 294 {
davidr99 0:ab4e012489ef 295 // Serial.println("ICRCERR");
davidr99 0:ab4e012489ef 296 _rxBad++;
davidr99 0:ab4e012489ef 297 clearRxBuf();
davidr99 0:ab4e012489ef 298 resetRxFifo();
davidr99 0:ab4e012489ef 299 _mode = RHModeIdle;
davidr99 0:ab4e012489ef 300 setModeRx(); // Keep trying
davidr99 0:ab4e012489ef 301 }
davidr99 0:ab4e012489ef 302 if (_lastInterruptFlags[1] & RH_RF22_IPREAVAL)
davidr99 0:ab4e012489ef 303 {
davidr99 0:ab4e012489ef 304 // Serial.println("IPREAVAL");
davidr99 0:ab4e012489ef 305 _lastRssi = (int8_t)(-120 + ((spiRead(RH_RF22_REG_26_RSSI) / 2)));
davidr99 0:ab4e012489ef 306 _lastPreambleTime = millis();
davidr99 0:ab4e012489ef 307 resetRxFifo();
davidr99 0:ab4e012489ef 308 clearRxBuf();
davidr99 0:ab4e012489ef 309 }
davidr99 0:ab4e012489ef 310 }
davidr99 0:ab4e012489ef 311
davidr99 0:ab4e012489ef 312 // These are low level functions that call the interrupt handler for the correct
davidr99 0:ab4e012489ef 313 // instance of RH_RF22.
davidr99 0:ab4e012489ef 314 // 3 interrupts allows us to have 3 different devices
davidr99 0:ab4e012489ef 315 void RH_RF22::isr0()
davidr99 0:ab4e012489ef 316 {
davidr99 0:ab4e012489ef 317 if (_deviceForInterrupt[0])
davidr99 0:ab4e012489ef 318 _deviceForInterrupt[0]->handleInterrupt();
davidr99 0:ab4e012489ef 319 }
davidr99 0:ab4e012489ef 320 void RH_RF22::isr1()
davidr99 0:ab4e012489ef 321 {
davidr99 0:ab4e012489ef 322 if (_deviceForInterrupt[1])
davidr99 0:ab4e012489ef 323 _deviceForInterrupt[1]->handleInterrupt();
davidr99 0:ab4e012489ef 324 }
davidr99 0:ab4e012489ef 325 void RH_RF22::isr2()
davidr99 0:ab4e012489ef 326 {
davidr99 0:ab4e012489ef 327 if (_deviceForInterrupt[2])
davidr99 0:ab4e012489ef 328 _deviceForInterrupt[2]->handleInterrupt();
davidr99 0:ab4e012489ef 329 }
davidr99 0:ab4e012489ef 330
davidr99 0:ab4e012489ef 331 void RH_RF22::reset()
davidr99 0:ab4e012489ef 332 {
davidr99 0:ab4e012489ef 333 spiWrite(RH_RF22_REG_07_OPERATING_MODE1, RH_RF22_SWRES);
davidr99 0:ab4e012489ef 334 // Wait for it to settle
davidr99 0:ab4e012489ef 335 delay(1); // SWReset time is nominally 100usec
davidr99 0:ab4e012489ef 336 }
davidr99 0:ab4e012489ef 337
davidr99 0:ab4e012489ef 338 uint8_t RH_RF22::statusRead()
davidr99 0:ab4e012489ef 339 {
davidr99 0:ab4e012489ef 340 return spiRead(RH_RF22_REG_02_DEVICE_STATUS);
davidr99 0:ab4e012489ef 341 }
davidr99 0:ab4e012489ef 342
davidr99 0:ab4e012489ef 343 uint8_t RH_RF22::adcRead(uint8_t adcsel,
davidr99 0:ab4e012489ef 344 uint8_t adcref ,
davidr99 0:ab4e012489ef 345 uint8_t adcgain,
davidr99 0:ab4e012489ef 346 uint8_t adcoffs)
davidr99 0:ab4e012489ef 347 {
davidr99 0:ab4e012489ef 348 uint8_t configuration = adcsel | adcref | (adcgain & RH_RF22_ADCGAIN);
davidr99 0:ab4e012489ef 349 spiWrite(RH_RF22_REG_0F_ADC_CONFIGURATION, configuration | RH_RF22_ADCSTART);
davidr99 0:ab4e012489ef 350 spiWrite(RH_RF22_REG_10_ADC_SENSOR_AMP_OFFSET, adcoffs);
davidr99 0:ab4e012489ef 351
davidr99 0:ab4e012489ef 352 // Conversion time is nominally 305usec
davidr99 0:ab4e012489ef 353 // Wait for the DONE bit
davidr99 0:ab4e012489ef 354 while (!(spiRead(RH_RF22_REG_0F_ADC_CONFIGURATION) & RH_RF22_ADCDONE))
davidr99 0:ab4e012489ef 355 ;
davidr99 0:ab4e012489ef 356 // Return the value
davidr99 0:ab4e012489ef 357 return spiRead(RH_RF22_REG_11_ADC_VALUE);
davidr99 0:ab4e012489ef 358 }
davidr99 0:ab4e012489ef 359
davidr99 0:ab4e012489ef 360 uint8_t RH_RF22::temperatureRead(uint8_t tsrange, uint8_t tvoffs)
davidr99 0:ab4e012489ef 361 {
davidr99 0:ab4e012489ef 362 spiWrite(RH_RF22_REG_12_TEMPERATURE_SENSOR_CALIBRATION, tsrange | RH_RF22_ENTSOFFS);
davidr99 0:ab4e012489ef 363 spiWrite(RH_RF22_REG_13_TEMPERATURE_VALUE_OFFSET, tvoffs);
davidr99 0:ab4e012489ef 364 return adcRead(RH_RF22_ADCSEL_INTERNAL_TEMPERATURE_SENSOR | RH_RF22_ADCREF_BANDGAP_VOLTAGE);
davidr99 0:ab4e012489ef 365 }
davidr99 0:ab4e012489ef 366
davidr99 0:ab4e012489ef 367 uint16_t RH_RF22::wutRead()
davidr99 0:ab4e012489ef 368 {
davidr99 0:ab4e012489ef 369 uint8_t buf[2];
davidr99 0:ab4e012489ef 370 spiBurstRead(RH_RF22_REG_17_WAKEUP_TIMER_VALUE1, buf, 2);
davidr99 0:ab4e012489ef 371 return ((uint16_t)buf[0] << 8) | buf[1]; // Dont rely on byte order
davidr99 0:ab4e012489ef 372 }
davidr99 0:ab4e012489ef 373
davidr99 0:ab4e012489ef 374 // RFM-22 doc appears to be wrong: WUT for wtm = 10000, r, = 0, d = 0 is about 1 sec
davidr99 0:ab4e012489ef 375 void RH_RF22::setWutPeriod(uint16_t wtm, uint8_t wtr, uint8_t wtd)
davidr99 0:ab4e012489ef 376 {
davidr99 0:ab4e012489ef 377 uint8_t period[3];
davidr99 0:ab4e012489ef 378
davidr99 0:ab4e012489ef 379 period[0] = ((wtr & 0xf) << 2) | (wtd & 0x3);
davidr99 0:ab4e012489ef 380 period[1] = wtm >> 8;
davidr99 0:ab4e012489ef 381 period[2] = wtm & 0xff;
davidr99 0:ab4e012489ef 382 spiBurstWrite(RH_RF22_REG_14_WAKEUP_TIMER_PERIOD1, period, sizeof(period));
davidr99 0:ab4e012489ef 383 }
davidr99 0:ab4e012489ef 384
davidr99 0:ab4e012489ef 385 // Returns true if centre + (fhch * fhs) is within limits
davidr99 0:ab4e012489ef 386 // Caution, different versions of the RH_RF22 support different max freq
davidr99 0:ab4e012489ef 387 // so YMMV
davidr99 0:ab4e012489ef 388 bool RH_RF22::setFrequency(float centre, float afcPullInRange)
davidr99 0:ab4e012489ef 389 {
davidr99 0:ab4e012489ef 390 uint8_t fbsel = RH_RF22_SBSEL;
davidr99 0:ab4e012489ef 391 uint8_t afclimiter;
davidr99 0:ab4e012489ef 392 if (centre < 240.0 || centre > 960.0) // 930.0 for early silicon
davidr99 0:ab4e012489ef 393 return false;
davidr99 0:ab4e012489ef 394 if (centre >= 480.0)
davidr99 0:ab4e012489ef 395 {
davidr99 0:ab4e012489ef 396 if (afcPullInRange < 0.0 || afcPullInRange > 0.318750)
davidr99 0:ab4e012489ef 397 return false;
davidr99 0:ab4e012489ef 398 centre /= 2;
davidr99 0:ab4e012489ef 399 fbsel |= RH_RF22_HBSEL;
davidr99 0:ab4e012489ef 400 afclimiter = afcPullInRange * 1000000.0 / 1250.0;
davidr99 0:ab4e012489ef 401 }
davidr99 0:ab4e012489ef 402 else
davidr99 0:ab4e012489ef 403 {
davidr99 0:ab4e012489ef 404 if (afcPullInRange < 0.0 || afcPullInRange > 0.159375)
davidr99 0:ab4e012489ef 405 return false;
davidr99 0:ab4e012489ef 406 afclimiter = afcPullInRange * 1000000.0 / 625.0;
davidr99 0:ab4e012489ef 407 }
davidr99 0:ab4e012489ef 408 centre /= 10.0;
davidr99 0:ab4e012489ef 409 float integerPart = floor(centre);
davidr99 0:ab4e012489ef 410 float fractionalPart = centre - integerPart;
davidr99 0:ab4e012489ef 411
davidr99 0:ab4e012489ef 412 uint8_t fb = (uint8_t)integerPart - 24; // Range 0 to 23
davidr99 0:ab4e012489ef 413 fbsel |= fb;
davidr99 0:ab4e012489ef 414 uint16_t fc = fractionalPart * 64000;
davidr99 0:ab4e012489ef 415 spiWrite(RH_RF22_REG_73_FREQUENCY_OFFSET1, 0); // REVISIT
davidr99 0:ab4e012489ef 416 spiWrite(RH_RF22_REG_74_FREQUENCY_OFFSET2, 0);
davidr99 0:ab4e012489ef 417 spiWrite(RH_RF22_REG_75_FREQUENCY_BAND_SELECT, fbsel);
davidr99 0:ab4e012489ef 418 spiWrite(RH_RF22_REG_76_NOMINAL_CARRIER_FREQUENCY1, fc >> 8);
davidr99 0:ab4e012489ef 419 spiWrite(RH_RF22_REG_77_NOMINAL_CARRIER_FREQUENCY0, fc & 0xff);
davidr99 0:ab4e012489ef 420 spiWrite(RH_RF22_REG_2A_AFC_LIMITER, afclimiter);
davidr99 0:ab4e012489ef 421 return !(statusRead() & RH_RF22_FREQERR);
davidr99 0:ab4e012489ef 422 }
davidr99 0:ab4e012489ef 423
davidr99 0:ab4e012489ef 424 // Step size in 10kHz increments
davidr99 0:ab4e012489ef 425 // Returns true if centre + (fhch * fhs) is within limits
davidr99 0:ab4e012489ef 426 bool RH_RF22::setFHStepSize(uint8_t fhs)
davidr99 0:ab4e012489ef 427 {
davidr99 0:ab4e012489ef 428 spiWrite(RH_RF22_REG_7A_FREQUENCY_HOPPING_STEP_SIZE, fhs);
davidr99 0:ab4e012489ef 429 return !(statusRead() & RH_RF22_FREQERR);
davidr99 0:ab4e012489ef 430 }
davidr99 0:ab4e012489ef 431
davidr99 0:ab4e012489ef 432 // Adds fhch * fhs to centre frequency
davidr99 0:ab4e012489ef 433 // Returns true if centre + (fhch * fhs) is within limits
davidr99 0:ab4e012489ef 434 bool RH_RF22::setFHChannel(uint8_t fhch)
davidr99 0:ab4e012489ef 435 {
davidr99 0:ab4e012489ef 436 spiWrite(RH_RF22_REG_79_FREQUENCY_HOPPING_CHANNEL_SELECT, fhch);
davidr99 0:ab4e012489ef 437 return !(statusRead() & RH_RF22_FREQERR);
davidr99 0:ab4e012489ef 438 }
davidr99 0:ab4e012489ef 439
davidr99 0:ab4e012489ef 440 uint8_t RH_RF22::rssiRead()
davidr99 0:ab4e012489ef 441 {
davidr99 0:ab4e012489ef 442 return spiRead(RH_RF22_REG_26_RSSI);
davidr99 0:ab4e012489ef 443 }
davidr99 0:ab4e012489ef 444
davidr99 0:ab4e012489ef 445 uint8_t RH_RF22::ezmacStatusRead()
davidr99 0:ab4e012489ef 446 {
davidr99 0:ab4e012489ef 447 return spiRead(RH_RF22_REG_31_EZMAC_STATUS);
davidr99 0:ab4e012489ef 448 }
davidr99 0:ab4e012489ef 449
davidr99 0:ab4e012489ef 450 void RH_RF22::setOpMode(uint8_t mode)
davidr99 0:ab4e012489ef 451 {
davidr99 0:ab4e012489ef 452 spiWrite(RH_RF22_REG_07_OPERATING_MODE1, mode);
davidr99 0:ab4e012489ef 453 }
davidr99 0:ab4e012489ef 454
davidr99 0:ab4e012489ef 455 void RH_RF22::setModeIdle()
davidr99 0:ab4e012489ef 456 {
davidr99 0:ab4e012489ef 457 if (_mode != RHModeIdle)
davidr99 0:ab4e012489ef 458 {
davidr99 0:ab4e012489ef 459 setOpMode(_idleMode);
davidr99 0:ab4e012489ef 460 _mode = RHModeIdle;
davidr99 0:ab4e012489ef 461 }
davidr99 0:ab4e012489ef 462 }
davidr99 0:ab4e012489ef 463
davidr99 0:ab4e012489ef 464 bool RH_RF22::sleep()
davidr99 0:ab4e012489ef 465 {
davidr99 0:ab4e012489ef 466 if (_mode != RHModeSleep)
davidr99 0:ab4e012489ef 467 {
davidr99 0:ab4e012489ef 468 setOpMode(0);
davidr99 0:ab4e012489ef 469 _mode = RHModeSleep;
davidr99 0:ab4e012489ef 470 }
davidr99 0:ab4e012489ef 471 return true;
davidr99 0:ab4e012489ef 472 }
davidr99 0:ab4e012489ef 473
davidr99 0:ab4e012489ef 474 void RH_RF22::setModeRx()
davidr99 0:ab4e012489ef 475 {
davidr99 0:ab4e012489ef 476 if (_mode != RHModeRx)
davidr99 0:ab4e012489ef 477 {
davidr99 0:ab4e012489ef 478 setOpMode(_idleMode | RH_RF22_RXON);
davidr99 0:ab4e012489ef 479 _mode = RHModeRx;
davidr99 0:ab4e012489ef 480 }
davidr99 0:ab4e012489ef 481 }
davidr99 0:ab4e012489ef 482
davidr99 0:ab4e012489ef 483 void RH_RF22::setModeTx()
davidr99 0:ab4e012489ef 484 {
davidr99 0:ab4e012489ef 485 if (_mode != RHModeTx)
davidr99 0:ab4e012489ef 486 {
davidr99 0:ab4e012489ef 487 setOpMode(_idleMode | RH_RF22_TXON);
davidr99 0:ab4e012489ef 488 // Hmmm, if you dont clear the RX FIFO here, then it appears that going
davidr99 0:ab4e012489ef 489 // to transmit mode in the middle of a receive can corrupt the
davidr99 0:ab4e012489ef 490 // RX FIFO
davidr99 0:ab4e012489ef 491 resetRxFifo();
davidr99 0:ab4e012489ef 492 _mode = RHModeTx;
davidr99 0:ab4e012489ef 493 }
davidr99 0:ab4e012489ef 494 }
davidr99 0:ab4e012489ef 495
davidr99 0:ab4e012489ef 496 void RH_RF22::setTxPower(uint8_t power)
davidr99 0:ab4e012489ef 497 {
davidr99 0:ab4e012489ef 498 spiWrite(RH_RF22_REG_6D_TX_POWER, power | RH_RF22_LNA_SW); // On RF23, LNA_SW must be set.
davidr99 0:ab4e012489ef 499 }
davidr99 0:ab4e012489ef 500
davidr99 0:ab4e012489ef 501 // Sets registers from a canned modem configuration structure
davidr99 0:ab4e012489ef 502 void RH_RF22::setModemRegisters(const ModemConfig* config)
davidr99 0:ab4e012489ef 503 {
davidr99 0:ab4e012489ef 504 spiWrite(RH_RF22_REG_1C_IF_FILTER_BANDWIDTH, config->reg_1c);
davidr99 0:ab4e012489ef 505 spiWrite(RH_RF22_REG_1F_CLOCK_RECOVERY_GEARSHIFT_OVERRIDE, config->reg_1f);
davidr99 0:ab4e012489ef 506 spiBurstWrite(RH_RF22_REG_20_CLOCK_RECOVERY_OVERSAMPLING_RATE, &config->reg_20, 6);
davidr99 0:ab4e012489ef 507 spiBurstWrite(RH_RF22_REG_2C_OOK_COUNTER_VALUE_1, &config->reg_2c, 3);
davidr99 0:ab4e012489ef 508 spiWrite(RH_RF22_REG_58_CHARGE_PUMP_CURRENT_TRIMMING, config->reg_58);
davidr99 0:ab4e012489ef 509 spiWrite(RH_RF22_REG_69_AGC_OVERRIDE1, config->reg_69);
davidr99 0:ab4e012489ef 510 spiBurstWrite(RH_RF22_REG_6E_TX_DATA_RATE1, &config->reg_6e, 5);
davidr99 0:ab4e012489ef 511 }
davidr99 0:ab4e012489ef 512
davidr99 0:ab4e012489ef 513 // Set one of the canned FSK Modem configs
davidr99 0:ab4e012489ef 514 // Returns true if its a valid choice
davidr99 0:ab4e012489ef 515 bool RH_RF22::setModemConfig(ModemConfigChoice index)
davidr99 0:ab4e012489ef 516 {
davidr99 0:ab4e012489ef 517 if (index > (signed int)(sizeof(MODEM_CONFIG_TABLE) / sizeof(ModemConfig)))
davidr99 0:ab4e012489ef 518 return false;
davidr99 0:ab4e012489ef 519
davidr99 0:ab4e012489ef 520 RH_RF22::ModemConfig cfg;
davidr99 0:ab4e012489ef 521 memcpy_P(&cfg, &MODEM_CONFIG_TABLE[index], sizeof(RH_RF22::ModemConfig));
davidr99 0:ab4e012489ef 522 setModemRegisters(&cfg);
davidr99 0:ab4e012489ef 523
davidr99 0:ab4e012489ef 524 return true;
davidr99 0:ab4e012489ef 525 }
davidr99 0:ab4e012489ef 526
davidr99 0:ab4e012489ef 527 // REVISIT: top bit is in Header Control 2 0x33
davidr99 0:ab4e012489ef 528 void RH_RF22::setPreambleLength(uint8_t nibbles)
davidr99 0:ab4e012489ef 529 {
davidr99 0:ab4e012489ef 530 spiWrite(RH_RF22_REG_34_PREAMBLE_LENGTH, nibbles);
davidr99 0:ab4e012489ef 531 }
davidr99 0:ab4e012489ef 532
davidr99 0:ab4e012489ef 533 // Caution doesnt set sync word len in Header Control 2 0x33
davidr99 0:ab4e012489ef 534 void RH_RF22::setSyncWords(const uint8_t* syncWords, uint8_t len)
davidr99 0:ab4e012489ef 535 {
davidr99 0:ab4e012489ef 536 spiBurstWrite(RH_RF22_REG_36_SYNC_WORD3, syncWords, len);
davidr99 0:ab4e012489ef 537 }
davidr99 0:ab4e012489ef 538
davidr99 0:ab4e012489ef 539 void RH_RF22::clearRxBuf()
davidr99 0:ab4e012489ef 540 {
davidr99 0:ab4e012489ef 541 ATOMIC_BLOCK_START;
davidr99 0:ab4e012489ef 542 _bufLen = 0;
davidr99 0:ab4e012489ef 543 _rxBufValid = false;
davidr99 0:ab4e012489ef 544 ATOMIC_BLOCK_END;
davidr99 0:ab4e012489ef 545 }
davidr99 0:ab4e012489ef 546
davidr99 0:ab4e012489ef 547 bool RH_RF22::available()
davidr99 0:ab4e012489ef 548 {
davidr99 0:ab4e012489ef 549 if (!_rxBufValid)
davidr99 0:ab4e012489ef 550 {
davidr99 0:ab4e012489ef 551 if (_mode == RHModeTx)
davidr99 0:ab4e012489ef 552 return false;
davidr99 0:ab4e012489ef 553 setModeRx(); // Make sure we are receiving
davidr99 0:ab4e012489ef 554 }
davidr99 0:ab4e012489ef 555 return _rxBufValid;
davidr99 0:ab4e012489ef 556 }
davidr99 0:ab4e012489ef 557
davidr99 0:ab4e012489ef 558 bool RH_RF22::recv(uint8_t* buf, uint8_t* len)
davidr99 0:ab4e012489ef 559 {
davidr99 0:ab4e012489ef 560 if (!available())
davidr99 0:ab4e012489ef 561 return false;
davidr99 0:ab4e012489ef 562
davidr99 0:ab4e012489ef 563 if (buf && len)
davidr99 0:ab4e012489ef 564 {
davidr99 0:ab4e012489ef 565 ATOMIC_BLOCK_START;
davidr99 0:ab4e012489ef 566 if (*len > _bufLen)
davidr99 0:ab4e012489ef 567 *len = _bufLen;
davidr99 0:ab4e012489ef 568 memcpy(buf, _buf, *len);
davidr99 0:ab4e012489ef 569 ATOMIC_BLOCK_END;
davidr99 0:ab4e012489ef 570 }
davidr99 0:ab4e012489ef 571 clearRxBuf();
davidr99 0:ab4e012489ef 572 // printBuffer("recv:", buf, *len);
davidr99 0:ab4e012489ef 573 return true;
davidr99 0:ab4e012489ef 574 }
davidr99 0:ab4e012489ef 575
davidr99 0:ab4e012489ef 576 void RH_RF22::clearTxBuf()
davidr99 0:ab4e012489ef 577 {
davidr99 0:ab4e012489ef 578 ATOMIC_BLOCK_START;
davidr99 0:ab4e012489ef 579 _bufLen = 0;
davidr99 0:ab4e012489ef 580 _txBufSentIndex = 0;
davidr99 0:ab4e012489ef 581 ATOMIC_BLOCK_END;
davidr99 0:ab4e012489ef 582 }
davidr99 0:ab4e012489ef 583
davidr99 0:ab4e012489ef 584 void RH_RF22::startTransmit()
davidr99 0:ab4e012489ef 585 {
davidr99 0:ab4e012489ef 586 sendNextFragment(); // Actually the first fragment
davidr99 0:ab4e012489ef 587 spiWrite(RH_RF22_REG_3E_PACKET_LENGTH, _bufLen); // Total length that will be sent
davidr99 0:ab4e012489ef 588 setModeTx(); // Start the transmitter, turns off the receiver
davidr99 0:ab4e012489ef 589 }
davidr99 0:ab4e012489ef 590
davidr99 0:ab4e012489ef 591 // Restart the transmission of a packet that had a problem
davidr99 0:ab4e012489ef 592 void RH_RF22::restartTransmit()
davidr99 0:ab4e012489ef 593 {
davidr99 0:ab4e012489ef 594 _mode = RHModeIdle;
davidr99 0:ab4e012489ef 595 _txBufSentIndex = 0;
davidr99 0:ab4e012489ef 596 // Serial.println("Restart");
davidr99 0:ab4e012489ef 597 startTransmit();
davidr99 0:ab4e012489ef 598 }
davidr99 0:ab4e012489ef 599
davidr99 0:ab4e012489ef 600 bool RH_RF22::send(const uint8_t* data, uint8_t len)
davidr99 0:ab4e012489ef 601 {
davidr99 0:ab4e012489ef 602 bool ret = true;
davidr99 0:ab4e012489ef 603 waitPacketSent();
davidr99 0:ab4e012489ef 604 ATOMIC_BLOCK_START;
davidr99 0:ab4e012489ef 605 spiWrite(RH_RF22_REG_3A_TRANSMIT_HEADER3, _txHeaderTo);
davidr99 0:ab4e012489ef 606 spiWrite(RH_RF22_REG_3B_TRANSMIT_HEADER2, _txHeaderFrom);
davidr99 0:ab4e012489ef 607 spiWrite(RH_RF22_REG_3C_TRANSMIT_HEADER1, _txHeaderId);
davidr99 0:ab4e012489ef 608 spiWrite(RH_RF22_REG_3D_TRANSMIT_HEADER0, _txHeaderFlags);
davidr99 0:ab4e012489ef 609 if (!fillTxBuf(data, len))
davidr99 0:ab4e012489ef 610 ret = false;
davidr99 0:ab4e012489ef 611 else
davidr99 0:ab4e012489ef 612 startTransmit();
davidr99 0:ab4e012489ef 613 ATOMIC_BLOCK_END;
davidr99 0:ab4e012489ef 614 // printBuffer("send:", data, len);
davidr99 0:ab4e012489ef 615 return ret;
davidr99 0:ab4e012489ef 616 }
davidr99 0:ab4e012489ef 617
davidr99 0:ab4e012489ef 618 bool RH_RF22::fillTxBuf(const uint8_t* data, uint8_t len)
davidr99 0:ab4e012489ef 619 {
davidr99 0:ab4e012489ef 620 clearTxBuf();
davidr99 0:ab4e012489ef 621 if (!len)
davidr99 0:ab4e012489ef 622 return false;
davidr99 0:ab4e012489ef 623 return appendTxBuf(data, len);
davidr99 0:ab4e012489ef 624 }
davidr99 0:ab4e012489ef 625
davidr99 0:ab4e012489ef 626 bool RH_RF22::appendTxBuf(const uint8_t* data, uint8_t len)
davidr99 0:ab4e012489ef 627 {
davidr99 0:ab4e012489ef 628 if (((uint16_t)_bufLen + len) > RH_RF22_MAX_MESSAGE_LEN)
davidr99 0:ab4e012489ef 629 return false;
davidr99 0:ab4e012489ef 630 ATOMIC_BLOCK_START;
davidr99 0:ab4e012489ef 631 memcpy(_buf + _bufLen, data, len);
davidr99 0:ab4e012489ef 632 _bufLen += len;
davidr99 0:ab4e012489ef 633 ATOMIC_BLOCK_END;
davidr99 0:ab4e012489ef 634 // printBuffer("txbuf:", _buf, _bufLen);
davidr99 0:ab4e012489ef 635 return true;
davidr99 0:ab4e012489ef 636 }
davidr99 0:ab4e012489ef 637
davidr99 0:ab4e012489ef 638 // Assumption: there is currently <= RH_RF22_TXFFAEM_THRESHOLD bytes in the Tx FIFO
davidr99 0:ab4e012489ef 639 void RH_RF22::sendNextFragment()
davidr99 0:ab4e012489ef 640 {
davidr99 0:ab4e012489ef 641 if (_txBufSentIndex < _bufLen)
davidr99 0:ab4e012489ef 642 {
davidr99 0:ab4e012489ef 643 // Some left to send?
davidr99 0:ab4e012489ef 644 uint8_t len = _bufLen - _txBufSentIndex;
davidr99 0:ab4e012489ef 645 // But dont send too much
davidr99 0:ab4e012489ef 646 if (len > (RH_RF22_FIFO_SIZE - RH_RF22_TXFFAEM_THRESHOLD - 1))
davidr99 0:ab4e012489ef 647 len = (RH_RF22_FIFO_SIZE - RH_RF22_TXFFAEM_THRESHOLD - 1);
davidr99 0:ab4e012489ef 648 spiBurstWrite(RH_RF22_REG_7F_FIFO_ACCESS, _buf + _txBufSentIndex, len);
davidr99 0:ab4e012489ef 649 // printBuffer("frag:", _buf + _txBufSentIndex, len);
davidr99 0:ab4e012489ef 650 _txBufSentIndex += len;
davidr99 0:ab4e012489ef 651 }
davidr99 0:ab4e012489ef 652 }
davidr99 0:ab4e012489ef 653
davidr99 0:ab4e012489ef 654 // Assumption: there are at least RH_RF22_RXFFAFULL_THRESHOLD in the RX FIFO
davidr99 0:ab4e012489ef 655 // That means it should only be called after a RXFFAFULL interrupt
davidr99 0:ab4e012489ef 656 void RH_RF22::readNextFragment()
davidr99 0:ab4e012489ef 657 {
davidr99 0:ab4e012489ef 658 if (((uint16_t)_bufLen + RH_RF22_RXFFAFULL_THRESHOLD) > RH_RF22_MAX_MESSAGE_LEN)
davidr99 0:ab4e012489ef 659 return; // Hmmm receiver overflow. Should never occur
davidr99 0:ab4e012489ef 660
davidr99 0:ab4e012489ef 661 // Read the RH_RF22_RXFFAFULL_THRESHOLD octets that should be there
davidr99 0:ab4e012489ef 662 spiBurstRead(RH_RF22_REG_7F_FIFO_ACCESS, _buf + _bufLen, RH_RF22_RXFFAFULL_THRESHOLD);
davidr99 0:ab4e012489ef 663 _bufLen += RH_RF22_RXFFAFULL_THRESHOLD;
davidr99 0:ab4e012489ef 664 }
davidr99 0:ab4e012489ef 665
davidr99 0:ab4e012489ef 666 // Clear the FIFOs
davidr99 0:ab4e012489ef 667 void RH_RF22::resetFifos()
davidr99 0:ab4e012489ef 668 {
davidr99 0:ab4e012489ef 669 spiWrite(RH_RF22_REG_08_OPERATING_MODE2, RH_RF22_FFCLRRX | RH_RF22_FFCLRTX);
davidr99 0:ab4e012489ef 670 spiWrite(RH_RF22_REG_08_OPERATING_MODE2, 0);
davidr99 0:ab4e012489ef 671 }
davidr99 0:ab4e012489ef 672
davidr99 0:ab4e012489ef 673 // Clear the Rx FIFO
davidr99 0:ab4e012489ef 674 void RH_RF22::resetRxFifo()
davidr99 0:ab4e012489ef 675 {
davidr99 0:ab4e012489ef 676 spiWrite(RH_RF22_REG_08_OPERATING_MODE2, RH_RF22_FFCLRRX);
davidr99 0:ab4e012489ef 677 spiWrite(RH_RF22_REG_08_OPERATING_MODE2, 0);
davidr99 0:ab4e012489ef 678 }
davidr99 0:ab4e012489ef 679
davidr99 0:ab4e012489ef 680 // CLear the TX FIFO
davidr99 0:ab4e012489ef 681 void RH_RF22::resetTxFifo()
davidr99 0:ab4e012489ef 682 {
davidr99 0:ab4e012489ef 683 spiWrite(RH_RF22_REG_08_OPERATING_MODE2, RH_RF22_FFCLRTX);
davidr99 0:ab4e012489ef 684 spiWrite(RH_RF22_REG_08_OPERATING_MODE2, 0);
davidr99 0:ab4e012489ef 685 }
davidr99 0:ab4e012489ef 686
davidr99 0:ab4e012489ef 687 // Default implmentation does nothing. Override if you wish
davidr99 0:ab4e012489ef 688 void RH_RF22::handleExternalInterrupt()
davidr99 0:ab4e012489ef 689 {
davidr99 0:ab4e012489ef 690 }
davidr99 0:ab4e012489ef 691
davidr99 0:ab4e012489ef 692 // Default implmentation does nothing. Override if you wish
davidr99 0:ab4e012489ef 693 void RH_RF22::handleWakeupTimerInterrupt()
davidr99 0:ab4e012489ef 694 {
davidr99 0:ab4e012489ef 695 }
davidr99 0:ab4e012489ef 696
davidr99 0:ab4e012489ef 697 void RH_RF22::setPromiscuous(bool promiscuous)
davidr99 0:ab4e012489ef 698 {
davidr99 0:ab4e012489ef 699 RHSPIDriver::setPromiscuous(promiscuous);
davidr99 0:ab4e012489ef 700 spiWrite(RH_RF22_REG_43_HEADER_ENABLE3, promiscuous ? 0x00 : 0xff);
davidr99 0:ab4e012489ef 701 }
davidr99 0:ab4e012489ef 702
davidr99 0:ab4e012489ef 703 bool RH_RF22::setCRCPolynomial(CRCPolynomial polynomial)
davidr99 0:ab4e012489ef 704 {
davidr99 0:ab4e012489ef 705 if (polynomial >= CRC_CCITT &&
davidr99 0:ab4e012489ef 706 polynomial <= CRC_Biacheva)
davidr99 0:ab4e012489ef 707 {
davidr99 0:ab4e012489ef 708 _polynomial = polynomial;
davidr99 0:ab4e012489ef 709 return true;
davidr99 0:ab4e012489ef 710 }
davidr99 0:ab4e012489ef 711 else
davidr99 0:ab4e012489ef 712 return false;
davidr99 0:ab4e012489ef 713 }
davidr99 0:ab4e012489ef 714
davidr99 0:ab4e012489ef 715 uint8_t RH_RF22::maxMessageLength()
davidr99 0:ab4e012489ef 716 {
davidr99 0:ab4e012489ef 717 return RH_RF22_MAX_MESSAGE_LEN;
davidr99 0:ab4e012489ef 718 }
davidr99 0:ab4e012489ef 719
davidr99 0:ab4e012489ef 720 void RH_RF22::setThisAddress(uint8_t thisAddress)
davidr99 0:ab4e012489ef 721 {
davidr99 0:ab4e012489ef 722 RHSPIDriver::setThisAddress(thisAddress);
davidr99 0:ab4e012489ef 723 spiWrite(RH_RF22_REG_3F_CHECK_HEADER3, thisAddress);
davidr99 0:ab4e012489ef 724 }
davidr99 0:ab4e012489ef 725
davidr99 0:ab4e012489ef 726 uint32_t RH_RF22::getLastPreambleTime()
davidr99 0:ab4e012489ef 727 {
davidr99 0:ab4e012489ef 728 return _lastPreambleTime;
davidr99 0:ab4e012489ef 729 }
davidr99 0:ab4e012489ef 730
davidr99 0:ab4e012489ef 731 void RH_RF22::setGpioReversed(bool gpioReversed)
davidr99 0:ab4e012489ef 732 {
davidr99 0:ab4e012489ef 733 // Ensure the antenna can be switched automatically according to transmit and receive
davidr99 0:ab4e012489ef 734 // This assumes GPIO0(out) is connected to TX_ANT(in) to enable tx antenna during transmit
davidr99 0:ab4e012489ef 735 // This assumes GPIO1(out) is connected to RX_ANT(in) to enable rx antenna during receive
davidr99 0:ab4e012489ef 736 if (gpioReversed)
davidr99 0:ab4e012489ef 737 {
davidr99 0:ab4e012489ef 738 // Reversed for HAB-RFM22B-BOA HAB-RFM22B-BO, also Si4432 sold by Dorji.com via Tindie.com.
davidr99 0:ab4e012489ef 739 spiWrite(RH_RF22_REG_0B_GPIO_CONFIGURATION0, 0x15) ; // RX state
davidr99 0:ab4e012489ef 740 spiWrite(RH_RF22_REG_0C_GPIO_CONFIGURATION1, 0x12) ; // TX state
davidr99 0:ab4e012489ef 741 }
davidr99 0:ab4e012489ef 742 else
davidr99 0:ab4e012489ef 743 {
davidr99 0:ab4e012489ef 744 spiWrite(RH_RF22_REG_0B_GPIO_CONFIGURATION0, 0x12) ; // TX state
davidr99 0:ab4e012489ef 745 spiWrite(RH_RF22_REG_0C_GPIO_CONFIGURATION1, 0x15) ; // RX state
davidr99 0:ab4e012489ef 746 }
davidr99 0:ab4e012489ef 747 }
davidr99 0:ab4e012489ef 748