bug fixes & performance improvements
This commit is contained in:
Felix Rusu
parent
3370ac6265
commit
d23a4c95b9
108
RFM69.cpp
108
RFM69.cpp
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@ -1,28 +1,39 @@
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// **********************************************************************************
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// Driver definition for HopeRF RFM69W/RFM69HW, Semtech SX1231/1231H
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// **********************************************************************************
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// Creative Commons Attrib Share-Alike License
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// If you want to use/extend this library please abide with the license terms: http://creativecommons.org/licenses/by-sa/3.0/
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// You are free to use/extend this library but please abide with the CCSA license:
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// http://creativecommons.org/licenses/by-sa/3.0/
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// 2013-06-14 (C) felix@lowpowerlab.com
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// **********************************************************************************
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#include <RFM69.h>
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#include <RFM69registers.h>
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#include <SPI.h>
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volatile byte RFM69::DATA[MAX_DATA_LEN];
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volatile byte RFM69::_mode; // current transceiver state
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volatile byte RFM69::DATALEN;
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volatile byte RFM69::SENDERID;
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volatile byte RFM69::TARGETID; //should match _address
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volatile byte RFM69::PAYLOADLEN;
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volatile byte RFM69::ACK_REQUESTED;
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volatile byte RFM69::ACK_RECEIVED; /// Should be polled immediately after sending a packet with ACK request
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RFM69* RFM69::selfPointer;
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bool RFM69::initialize(byte freqBand, byte nodeID, byte networkID)
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{
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const byte CONFIG[][2] =
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{
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/* 0x01 */ { REG_OPMODE, RF_OPMODE_SEQUENCER_ON | RF_OPMODE_LISTEN_OFF | RF_OPMODE_STANDBY},
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/* 0x02 */ { REG_DATAMODUL, RF_DATAMODUL_DATAMODE_PACKET | RF_DATAMODUL_MODULATIONTYPE_FSK | RF_DATAMODUL_MODULATIONSHAPING_00}, //gaussian, bt=1.0
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/* 0x03 */ { REG_BITRATEMSB, RF_BITRATEMSB_55555}, //default is 4.8 KBPS
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/* 0x01 */ { REG_OPMODE, RF_OPMODE_SEQUENCER_ON | RF_OPMODE_LISTEN_OFF | RF_OPMODE_STANDBY },
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/* 0x02 */ { REG_DATAMODUL, RF_DATAMODUL_DATAMODE_PACKET | RF_DATAMODUL_MODULATIONTYPE_FSK | RF_DATAMODUL_MODULATIONSHAPING_00 }, //gaussian, bt=1.0
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/* 0x03 */ { REG_BITRATEMSB, RF_BITRATEMSB_55555}, //default:4.8 KBPS
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/* 0x04 */ { REG_BITRATELSB, RF_BITRATELSB_55555},
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/* 0x05 */ { REG_FDEVMSB, RF_FDEVMSB_50000}, //default is 5khz
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/* 0x05 */ { REG_FDEVMSB, RF_FDEVMSB_50000}, //default:5khz, (FDEV + BitRate/2 <= 500Khz)
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/* 0x06 */ { REG_FDEVLSB, RF_FDEVLSB_50000},
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/* 0x07 */ { REG_FRFMSB, (freqBand==RF69_315MHZ ? RF_FRFMSB_315 : (freqBand==RF69_433MHZ ? RF_FRFMSB_433 : (freqBand==RF69_868MHZ ? RF_FRFMSB_868 : RF_FRFMSB_915)))},
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/* 0x08 */ { REG_FRFMID, (freqBand==RF69_315MHZ ? RF_FRFMID_315 : (freqBand==RF69_433MHZ ? RF_FRFMID_433 : (freqBand==RF69_868MHZ ? RF_FRFMID_868 : RF_FRFMID_915)))},
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/* 0x09 */ { REG_FRFLSB, (freqBand==RF69_315MHZ ? RF_FRFLSB_315 : (freqBand==RF69_433MHZ ? RF_FRFLSB_433 : (freqBand==RF69_868MHZ ? RF_FRFLSB_868 : RF_FRFLSB_915)))},
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/* 0x07 */ { REG_FRFMSB, (freqBand==RF69_315MHZ ? RF_FRFMSB_315 : (freqBand==RF69_433MHZ ? RF_FRFMSB_433 : (freqBand==RF69_868MHZ ? RF_FRFMSB_868 : RF_FRFMSB_915))) },
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/* 0x08 */ { REG_FRFMID, (freqBand==RF69_315MHZ ? RF_FRFMID_315 : (freqBand==RF69_433MHZ ? RF_FRFMID_433 : (freqBand==RF69_868MHZ ? RF_FRFMID_868 : RF_FRFMID_915))) },
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/* 0x09 */ { REG_FRFLSB, (freqBand==RF69_315MHZ ? RF_FRFLSB_315 : (freqBand==RF69_433MHZ ? RF_FRFLSB_433 : (freqBand==RF69_868MHZ ? RF_FRFLSB_868 : RF_FRFLSB_915))) },
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// looks like PA1 and PA2 are not implemented on RFM69W, hence the max output power is 13dBm
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// +17dBm and +20dBm are possible on RFM69HW
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@ -30,23 +41,26 @@ bool RFM69::initialize(byte freqBand, byte nodeID, byte networkID)
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// +17dBm formula: Pout=-14+OutputPower (with PA1 and PA2)**
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// +20dBm formula: Pout=-11+OutputPower (with PA1 and PA2)** and high power PA settings (section 3.3.7 in datasheet)
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///* 0x11 */ { REG_PALEVEL, RF_PALEVEL_PA0_ON | RF_PALEVEL_PA1_OFF | RF_PALEVEL_PA2_OFF | RF_PALEVEL_OUTPUTPOWER_11111},
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/* 0x19 */ { REG_RXBW, RF_RXBW_DCCFREQ_010 | RF_RXBW_MANT_16 | RF_RXBW_EXP_2},
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/* 0x25 */ { REG_DIOMAPPING1, RF_DIOMAPPING1_DIO0_01}, //DIO0 is the only IRQ we're using
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/* 0x29 */ { REG_RSSITHRESH, 220}, // must be set to dBm = (-Sensitivity / 2) - default is 0xE4=228 so -114dBm
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///* 0x13 */ { REG_OCP, RF_OCP_ON | RF_OCP_TRIM_95 }, //over current protection (default is 95mA)
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// RXBW defaults are {RF_RXBW_DCCFREQ_010 | RF_RXBW_MANT_24 | RF_RXBW_EXP_5} (RxBw: 10.4khz)
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/* 0x19 */ { REG_RXBW, RF_RXBW_DCCFREQ_010 | RF_RXBW_MANT_16 | RF_RXBW_EXP_2 }, //(BitRate < 2 * RxBw)
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/* 0x25 */ { REG_DIOMAPPING1, RF_DIOMAPPING1_DIO0_01 }, //DIO0 is the only IRQ we're using
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/* 0x29 */ { REG_RSSITHRESH, 220 }, //must be set to dBm = (-Sensitivity / 2) - default is 0xE4=228 so -114dBm
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///* 0x2d */ { REG_PREAMBLELSB, RF_PREAMBLESIZE_LSB_VALUE } // default 3 preamble bytes 0xAAAAAA
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/* 0x2e */ { REG_SYNCCONFIG, RF_SYNC_ON | RF_SYNC_FIFOFILL_AUTO | RF_SYNC_SIZE_2 | RF_SYNC_TOL_0},
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/* 0x2f */ { REG_SYNCVALUE1, 0x2D}, //attempt to make this compatible with sync1 byte of RFM12B lib
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/* 0x30 */ { REG_SYNCVALUE2, networkID}, //NETWORK ID
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/* 0x2e */ { REG_SYNCCONFIG, RF_SYNC_ON | RF_SYNC_FIFOFILL_AUTO | RF_SYNC_SIZE_2 | RF_SYNC_TOL_0 },
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/* 0x2f */ { REG_SYNCVALUE1, 0x2D }, //attempt to make this compatible with sync1 byte of RFM12B lib
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/* 0x30 */ { REG_SYNCVALUE2, networkID }, //NETWORK ID
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/* 0x37 */ { REG_PACKETCONFIG1, RF_PACKET1_FORMAT_VARIABLE | RF_PACKET1_DCFREE_OFF | RF_PACKET1_CRC_ON | RF_PACKET1_CRCAUTOCLEAR_ON | RF_PACKET1_ADRSFILTERING_OFF },
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/* 0x38 */ { REG_PAYLOADLENGTH, 66 }, //in variable length mode: the max frame size, not used in TX
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//* 0x39 */ { REG_NODEADRS, nodeID}, //turned off because we're not using address filtering
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//* 0x39 */ { REG_NODEADRS, nodeID }, //turned off because we're not using address filtering
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/* 0x3C */ { REG_FIFOTHRESH, RF_FIFOTHRESH_TXSTART_FIFONOTEMPTY | RF_FIFOTHRESH_VALUE }, //TX on FIFO not empty
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/* 0x3d */ { REG_PACKETCONFIG2, RF_PACKET2_RXRESTARTDELAY_2BITS | RF_PACKET2_AUTORXRESTART_ON | RF_PACKET2_AES_OFF }, //RXRESTARTDELAY must match transmitter PA ramp-down time (bitrate dependent)
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/* 0x6F */ { REG_TESTDAGC, RF_DAGC_CONTINUOUS }, // run DAGC continuously in RX mode
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{255, 0}
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};
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pinMode(_slaveSelectPin, OUTPUT);
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unselect();
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SPI.setDataMode(SPI_MODE0);
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SPI.setBitOrder(MSBFIRST);
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SPI.setClockDivider(SPI_CLOCK_DIV2); //max speed, except on Due which can run at system clock speed
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@ -100,7 +114,7 @@ void RFM69::setMode(byte newMode)
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}
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// we are using packet mode, so this check is not really needed
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// but waiting for mode ready is necessary when going from to sleep because the FIFO may not be immediately available from previous mode
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// but waiting for mode ready is necessary when going from sleep because the FIFO may not be immediately available from previous mode
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while (_mode == RF69_MODE_SLEEP && (readReg(REG_IRQFLAGS1) & RF_IRQFLAGS1_MODEREADY) == 0x00); // Wait for ModeReady
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_mode = newMode;
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@ -112,7 +126,7 @@ void RFM69::sleep() {
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void RFM69::setAddress(byte addr)
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{
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_address = addr; //& 0x7F; //make sure MSB is reserved for ACK flagging
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_address = addr;
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writeReg(REG_NODEADRS, _address);
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}
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@ -135,20 +149,21 @@ bool RFM69::canSend()
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void RFM69::send(byte toAddress, const void* buffer, byte bufferSize, bool requestACK)
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{
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writeReg(REG_PACKETCONFIG2, (readReg(REG_PACKETCONFIG2) & 0xFB) | RF_PACKET2_RXRESTART); // avoid RX deadlocks
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while (!canSend()) receiveDone();
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sendFrame(toAddress, buffer, bufferSize, requestACK, false);
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}
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//to dramatically increase the chance of getting a packet across, call this function instead of send
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// to increase the chance of getting a packet across, call this function instead of send
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// and it handles all the ACK requesting/retrying for you :)
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// The only twist is that you have to manually listen to ACK requests on the other side and send back the ACKs
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// The reason for the semi-automaton is that the lib is ingterrupt driven and
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// requires user action to read the received data and decide what to do with it
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// rountrips usually take only 5-8ms at 50kbps
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bool RFM69::sendWithRetry(byte toAddress, const void* buffer, byte bufferSize, byte attempts, byte retryWaitTime) {
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// replies usually take only 5-8ms at 50kbps@915Mhz
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bool RFM69::sendWithRetry(byte toAddress, const void* buffer, byte bufferSize, byte retries, byte retryWaitTime) {
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long sentTime;
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byte howLong=0;
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for (byte i=0; i<attempts; i++)
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for (byte i=0; i<=retries; i++)
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{
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send(toAddress, buffer, bufferSize, true);
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sentTime = millis();
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@ -156,7 +171,6 @@ bool RFM69::sendWithRetry(byte toAddress, const void* buffer, byte bufferSize, b
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{
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if (ACKReceived(toAddress))
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{
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////roundtrip millis
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//Serial.print(" ~ms:");Serial.print(millis()-sentTime);
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return true;
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}
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@ -175,17 +189,16 @@ bool RFM69::ACKReceived(byte fromNodeID) {
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/// Should be called immediately after reception in case sender wants ACK
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void RFM69::sendACK(const void* buffer, byte bufferSize) {
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byte sender = SENDERID;
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while (!canSend()) receiveDone();
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sendFrame(SENDERID, buffer, bufferSize, false, true);
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sendFrame(sender, buffer, bufferSize, false, true);
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}
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void RFM69::sendFrame(byte toAddress, const void* buffer, byte bufferSize, bool requestACK, bool sendACK)
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{
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setMode(RF69_MODE_STANDBY); //turn off receiver to prevent reception while filling fifo
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setMode(RF69_MODE_STANDBY); //turn off receiver to prevent reception while filling fifo
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while ((readReg(REG_IRQFLAGS1) & RF_IRQFLAGS1_MODEREADY) == 0x00); // Wait for ModeReady
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writeReg(REG_DIOMAPPING1, (readReg(REG_DIOMAPPING1) & 0x3F) | RF_DIOMAPPING1_DIO0_00); // DIO0 is "Packet Sent"
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writeReg(REG_FIFOTHRESH, (readReg(REG_FIFOTHRESH) & 0x7F) | RF_FIFOTHRESH_TXSTART_FIFONOTEMPTY);
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writeReg(REG_DIOMAPPING1, RF_DIOMAPPING1_DIO0_00); // DIO0 is "Packet Sent"
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if (bufferSize > MAX_DATA_LEN) bufferSize = MAX_DATA_LEN;
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//write to FIFO
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@ -208,68 +221,73 @@ void RFM69::sendFrame(byte toAddress, const void* buffer, byte bufferSize, bool
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/* no need to wait for transmit mode to be ready since its handled by the radio */
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setMode(RF69_MODE_TX);
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// wait for IRQ when finished transmitting
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while (digitalRead(_interruptPin) == 0); //wait for DIO0 to turn HIGH signalling transmission finish
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//while (readReg(REG_IRQFLAGS2) & RF_IRQFLAGS2_PACKETSENT == 0x00); // Wait for ModeReady
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setMode(RF69_MODE_STANDBY);
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}
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void RFM69::interruptHandler() {
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//Serial.print("MODE:");Serial.print(readReg(REG_OPMODE), BIN);
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//Serial.print("\n IRQ1:");Serial.print(readReg(REG_IRQFLAGS1), BIN);
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//Serial.print(" IRQ2:");Serial.print(readReg(REG_IRQFLAGS2), BIN);
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//pinMode(4, OUTPUT);
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//digitalWrite(4, 1);
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if (_mode == RF69_MODE_RX && (readReg(REG_IRQFLAGS2) & RF_IRQFLAGS2_PAYLOADREADY))
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{
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//Serial.print("\nRDY");
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setMode(RF69_MODE_STANDBY);
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select();
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SPI.transfer(REG_FIFO & 0x7f);
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PAYLOADLEN = SPI.transfer(0);
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DATALEN = PAYLOADLEN - 3;
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PAYLOADLEN = PAYLOADLEN > 66 ? 66 : PAYLOADLEN; //precaution
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TARGETID = SPI.transfer(0);
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if(!(_promiscuousMode || TARGETID==_address || TARGETID==0)) //match this node's address, or broadcast addr 0x0 or anything in promiscuous mode
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{
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PAYLOADLEN = 0;
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unselect();
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//digitalWrite(4, 0);
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return;
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}
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SENDERID = SPI.transfer(0);
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SENDERID = SPI.transfer(0);
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byte CTLbyte = SPI.transfer(0);
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ACK_RECEIVED = CTLbyte & 0x80; //extract ACK-requested flag
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ACK_REQUESTED = CTLbyte & 0x40; //extract ACK-received flag
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//Serial.print(" *** ");
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DATALEN = PAYLOADLEN - 3;
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for (byte i= 0; i < DATALEN; i++)
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{
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DATA[i] = SPI.transfer(0);
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//Serial.print((char)DATA[i]);
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}
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//Serial.println(" ***");
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//Serial.println(DATALEN);
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unselect();
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setMode(RF69_MODE_RX);
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}
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//else Serial.println("UNK");
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//digitalWrite(4, 0);
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}
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void RFM69::isr0() { selfPointer->interruptHandler(); }
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void RFM69::receiveBegin() {
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DATALEN = SENDERID = TARGETID = PAYLOADLEN = ACK_REQUESTED = ACK_RECEIVED = 0;
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writeReg(REG_DIOMAPPING1, (readReg(REG_DIOMAPPING1) & 0x3F) | RF_DIOMAPPING1_DIO0_01); //set DIO0 to "PAYLOADREADY" in receive mode
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DATALEN = 0;
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SENDERID = 0;
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TARGETID = 0;
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PAYLOADLEN = 0;
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ACK_REQUESTED = 0;
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ACK_RECEIVED = 0;
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if (readReg(REG_IRQFLAGS2) & RF_IRQFLAGS2_PAYLOADREADY)
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writeReg(REG_PACKETCONFIG2, (readReg(REG_PACKETCONFIG2) & 0xFB) | RF_PACKET2_RXRESTART); // avoid RX deadlocks
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writeReg(REG_DIOMAPPING1, RF_DIOMAPPING1_DIO0_01); //set DIO0 to "PAYLOADREADY" in receive mode
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setMode(RF69_MODE_RX);
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}
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bool RFM69::receiveDone() {
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noInterrupts(); //will be re-enabled in the setMode() method
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// ATOMIC_BLOCK(ATOMIC_FORCEON)
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// {
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noInterrupts(); //re-enabled in unselect() via setMode()
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if (_mode == RF69_MODE_RX && PAYLOADLEN>0)
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{
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setMode(RF69_MODE_STANDBY);
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return true;
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}
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receiveBegin();
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return false;
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//}
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}
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// To enable encryption: radio.encrypt("ABCDEFGHIJKLMNOP");
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28
RFM69.h
28
RFM69.h
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@ -1,11 +1,13 @@
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// **********************************************************************************
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// Driver definition for HopeRF RFM69W/RFM69HW, Semtech SX1231/1231H
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// **********************************************************************************
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// Creative Commons Attrib Share-Alike License
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// If you want to use/extend this library please abide with the license terms: http://creativecommons.org/licenses/by-sa/3.0/
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// You are free to use/extend this library but please abide with the CCSA license:
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// http://creativecommons.org/licenses/by-sa/3.0/
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// 2013-06-14 (C) felix@lowpowerlab.com
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// **********************************************************************************
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#ifndef RFM69_h
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#define RFM69_h
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#include <Arduino.h> //assumes Arduino IDE v1.0 or greater
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#define MAX_DATA_LEN 61 // to take advantage of the built in AES/CRC we want to limit the frame size to the internal FIFO size (66 bytes - 3 bytes overhead)
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@ -29,13 +31,14 @@
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class RFM69 {
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public:
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volatile byte DATA[MAX_DATA_LEN]; // recv/xmit buf, including hdr & crc bytes
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volatile byte DATALEN;
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volatile byte SENDERID;
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volatile byte TARGETID; //should match _address
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volatile byte PAYLOADLEN;
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volatile byte ACK_REQUESTED;
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volatile byte ACK_RECEIVED; /// Should be polled immediately after sending a packet with ACK request
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static volatile byte DATA[MAX_DATA_LEN]; // recv/xmit buf, including hdr & crc bytes
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static volatile byte DATALEN;
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static volatile byte SENDERID;
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static volatile byte TARGETID; //should match _address
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static volatile byte PAYLOADLEN;
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static volatile byte ACK_REQUESTED;
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static volatile byte ACK_RECEIVED; /// Should be polled immediately after sending a packet with ACK request
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static volatile byte _mode; //should be protected?
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RFM69(byte slaveSelectPin=SPI_CS, byte interruptPin=RF69_IRQ_PIN, bool isRFM69HW=false) {
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_slaveSelectPin = slaveSelectPin;
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@ -50,7 +53,7 @@ class RFM69 {
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void setAddress(byte addr);
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bool canSend();
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void send(byte toAddress, const void* buffer, byte bufferSize, bool requestACK=false);
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bool sendWithRetry(byte toAddress, const void* buffer, byte bufferSize, byte attempts=3, byte retryWaitTime=15);
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bool sendWithRetry(byte toAddress, const void* buffer, byte bufferSize, byte retries=2, byte retryWaitTime=15);
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bool receiveDone();
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bool ACKReceived(byte fromNodeID);
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void sendACK(const void* buffer = "", uint8_t bufferSize=0);
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@ -75,10 +78,9 @@ class RFM69 {
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static RFM69* selfPointer;
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byte _slaveSelectPin;
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byte _interruptPin;
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byte _mode;
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byte _address;
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byte _powerLevel;
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bool _promiscuousMode;
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byte _powerLevel;
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bool _isRFM69HW;
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void receiveBegin();
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@ -1,3 +1,11 @@
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// **********************************************************************************
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// Registers used in driver definition for HopeRF RFM69W/RFM69HW, Semtech SX1231/1231H
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// **********************************************************************************
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// Creative Commons Attrib Share-Alike License
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// You are free to use/extend this library but please abide with the CCSA license:
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// http://creativecommons.org/licenses/by-sa/3.0/
|
||||
// 2013-06-14 (C) felix@lowpowerlab.com
|
||||
// **********************************************************************************
|
||||
|
||||
//**************************************************
|
||||
// RFM69/SX1231 Internal registers addresses
|
||||
|
|
|
|||
Loading…
Reference in New Issue