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add dual example

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This commit is contained in:
soypat
2023-05-24 20:03:35 -03:00
parent 4634276950
commit 41e514150d
7 changed files with 151 additions and 37 deletions
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sx127x/registers.go
+33
View File
@@ -2,6 +2,7 @@ package sx127x
import (
"bytes"
"errors"
"fmt"
"github.com/soypat/lora"
@@ -297,3 +298,35 @@ func (d *DeviceLoRa) debugRegString() string {
})
return buf.String()
}
func (d *DeviceLoRa) FullStatus(fifo, registers []byte) (err error) {
if len(fifo) < 256 || len(registers) < 256 {
return errors.New("fifo and registers must be at least 256 bytes long")
}
err = d.SetOpMode(OpStandby)
if err != nil {
return err
}
for addr := uint8(1); addr <= 0x4d; addr++ {
if !regstr(addr).valid() {
registers[addr] = 0
continue // Not a readable register.
}
registers[addr], err = d.read8(addr)
if err != nil {
return err
}
}
// Read full contents of FIFO.
err = d.Write8(regFIFO_ADDR_PTR, 0)
if err != nil {
return err
}
for addr := uint8(0); addr < 255; addr++ {
fifo[addr], err = d.read8(0)
if err != nil {
return err
}
}
return nil
}
sx127x/regstr_string.go
+6 -1
View File
@@ -97,9 +97,14 @@ var __reg_map = map[regstr]string{
77: __reg_name[507:514],
}
func (i regstr) valid() bool {
_, ok := __reg_map[i]
return ok
}
func (i regstr) String() string {
if str, ok := __reg_map[i]; ok {
return str
}
return "_reg(" + strconv.FormatInt(int64(i), 10) + ")"
return "regstr(" + strconv.FormatInt(int64(i), 10) + ")"
}
sx127x/sx127x.go
+36 -36
View File
@@ -142,7 +142,7 @@ func (d *DeviceLoRa) Configure(cfg lora.Config) (err error) {
}
d.Reset()
// We need to be in sleep mode to set LoRa mode if in FSK/OOK.
d.write8(regOP_MODE, opmSLEEP) // No need to check error, do it in SetOpmode.
d.Write8(regOP_MODE, opmSLEEP) // No need to check error, do it in SetOpmode.
if !d.IsConnected() {
return ErrNotDetected
}
@@ -218,9 +218,9 @@ func (d *DeviceLoRa) Configure(cfg lora.Config) (err error) {
if err != nil {
return err
}
d.write8(regFIFO_TX_BASE_ADDR, 0)
d.write8(regFIFO_RX_BASE_ADDR, 0)
d.write8(regFIFO_ADDR_PTR, 0)
d.Write8(regFIFO_TX_BASE_ADDR, 0)
d.Write8(regFIFO_RX_BASE_ADDR, 0)
d.Write8(regFIFO_ADDR_PTR, 0)
d.headerType = cfg.HeaderType
return d.SetOpMode(OpSleep) // Return to sleep mode to conserve power.
}
@@ -246,7 +246,7 @@ func (d *DeviceLoRa) IsConnected() bool {
// SetOpMode sets the operating mode of the SX127x to a LoRa mode.
func (d *DeviceLoRa) SetOpMode(mode OpMode) error {
// We always write the LoRa mode bit
err := d.write8(regOP_MODE, byte(mode|opLoRaBit))
err := d.Write8(regOP_MODE, byte(mode|opLoRaBit))
if err != nil {
return err
}
@@ -319,7 +319,7 @@ func (d *DeviceLoRa) Tx(packet []byte) (err error) {
return err
}
}
err = d.write8(regPAYLOAD_LENGTH, uint8(len(packet)))
err = d.Write8(regPAYLOAD_LENGTH, uint8(len(packet)))
if err != nil {
return err
}
@@ -336,10 +336,10 @@ func (d *DeviceLoRa) Tx(packet []byte) (err error) {
if err != nil {
return err
}
d.write8(regFIFO_TX_BASE_ADDR, 0)
d.write8(regFIFO_ADDR_PTR, 0)
d.Write8(regFIFO_TX_BASE_ADDR, 0)
d.Write8(regFIFO_ADDR_PTR, 0)
for i := 0; i < len(packet); i++ {
err := d.write8(regFIFO, packet[i])
err := d.Write8(regFIFO, packet[i])
if err != nil {
return err
}
@@ -373,7 +373,7 @@ func (d *DeviceLoRa) Tx(packet []byte) (err error) {
// SetRxDoneOnDIO0 sets the TxDone interrupt on the DIO0 pin of the device.
func (d *DeviceLoRa) SetIRQTxDoneOnDIO0() (err error) {
// set the IRQ mapping DIO0=TxDone DIO1=NOP DIO2=NOP.
err = d.write8(regDIO_MAPPING_1, mapDIO0_TXDONE)
err = d.Write8(regDIO_MAPPING_1, mapDIO0_TXDONE)
if err != nil {
return err
}
@@ -388,7 +388,7 @@ func (d *DeviceLoRa) SetIRQTxDoneOnDIO0() (err error) {
// SetRxDoneOnDIO0 sets the RxDone interrupt on the DIO0 pin of the device.
func (d *DeviceLoRa) SetIRQRxDoneOnDIO0() (err error) {
// set the IRQ mapping DIO0=TxDone DIO1=NOP DIO2=NOP.
err = d.write8(regDIO_MAPPING_1, mapDIO0_RXDONE)
err = d.Write8(regDIO_MAPPING_1, mapDIO0_RXDONE)
if err != nil {
return err
}
@@ -537,11 +537,11 @@ func (d *DeviceLoRa) prepareForRx(fifoAddr uint8) (err error) {
if err != nil {
return err
}
err = d.write8(regFIFO_RX_BASE_ADDR, fifoAddr)
err = d.Write8(regFIFO_RX_BASE_ADDR, fifoAddr)
if err != nil {
return err
}
return d.write8(regFIFO_ADDR_PTR, fifoAddr)
return d.Write8(regFIFO_ADDR_PTR, fifoAddr)
}
func (d *DeviceLoRa) gotRxContinous(fn rxCallback) error {
@@ -566,7 +566,7 @@ func (d *DeviceLoRa) gotRxContinous(fn rxCallback) error {
// - bit 6: Rx done interrupt
// - bit 7: Rx timeout interrupt
func (d *DeviceLoRa) clearIRQ(toClear uint8) error {
err := d.write8(regIRQ_FLAGS, toClear)
err := d.Write8(regIRQ_FLAGS, toClear)
if err != nil {
return err
}
@@ -722,15 +722,15 @@ func (d *DeviceLoRa) ReadConfig() (cfg lora.Config, err error) {
func (d *DeviceLoRa) setPreambleLength(pLen uint16) error {
var buf [2]byte
binary.BigEndian.PutUint16(buf[:], pLen)
d.write8(regPREAMBLE_MSB, buf[0])
return d.write8(regPREAMBLE_LSB, buf[1])
d.Write8(regPREAMBLE_MSB, buf[0])
return d.Write8(regPREAMBLE_LSB, buf[1])
}
func (d *DeviceLoRa) setMaxPayloadLength(plen uint8) error {
if plen == 0 {
return io.ErrShortBuffer
}
return d.write8(regPAYLOAD_LENGTH, plen)
return d.Write8(regPAYLOAD_LENGTH, plen)
}
func (d *DeviceLoRa) enableTxContinuousMode(enable bool) error {
@@ -755,7 +755,7 @@ func (d *DeviceLoRa) setRFOTxPower(txPow int8) error {
}
MaxPower, OutputPower := rfoPowReg(txPow)
// This unsets PaSelect bit which switches mode of operation to RFO pin (limited to 14dBm power).
err := d.write8(regPA_CONFIG, ((0b111&MaxPower)<<4)|(OutputPower&0b1111))
err := d.Write8(regPA_CONFIG, ((0b111&MaxPower)<<4)|(OutputPower&0b1111))
if err != nil {
return err
}
@@ -777,7 +777,7 @@ func (d *DeviceLoRa) setPABoostTxPower(txPow int8) error {
// }
outputPower := paBoostPowReg(txPow)
return d.write8(regPA_CONFIG, PASelect|MaxPower|outputPower)
return d.Write8(regPA_CONFIG, PASelect|MaxPower|outputPower)
}
func rfoPowReg(txPow int8) (MaxPower, OutputPower uint8) {
@@ -811,7 +811,7 @@ func paBoostPowReg(txPow int8) (OutputPower uint8) {
// the max current (Imax) in milliamperes.
func (d *DeviceLoRa) SetOCP(mA uint8) error {
const ocpEnabledMask = 1 << 5
return d.write8(regOCP, ocpEnabledMask|(0x1F&ocpTrim(mA)))
return d.Write8(regOCP, ocpEnabledMask|(0x1F&ocpTrim(mA)))
}
func ocpTrim(imax uint8) uint8 {
@@ -837,11 +837,11 @@ func (d *DeviceLoRa) setFrequency(freq lora.Frequency) error {
freqReg[0] = byte(frf >> 16)
freqReg[1] = byte(frf >> 8)
freqReg[2] = byte(frf >> 0)
d.write8(regFRF_MSB, freqReg[0])
d.write8(regFRF_MID, freqReg[1])
d.Write8(regFRF_MSB, freqReg[0])
d.Write8(regFRF_MID, freqReg[1])
// Note pg82: A change in the center frequency will only be taken into account when the
// least significant byte FrfLsb in RegFrfLsb is written.
return d.write8(regFRF_LSB, freqReg[2]) // Write LSB last!
return d.Write8(regFRF_LSB, freqReg[2]) // Write LSB last!
}
// setSpreadFactorConsistent sets the spreading factor and closely related parameters
@@ -862,7 +862,7 @@ func (d *DeviceLoRa) setSpreadFactorConsistent(sf lora.SpreadFactor) (err error)
return err
}
// Set DetectionThreshold to 0x0C for SF6 and to 0x0A otherwise (SF7 to SF12).
return d.write8(regDETECTION_THRESHOLD, 0b1000|(0b10<<b2u8(isSF6)))
return d.Write8(regDETECTION_THRESHOLD, 0b1000|(0b10<<b2u8(isSF6)))
}
// setSpreadingFactor sets the spreading factor. The value must be between 6 and 12.
@@ -878,7 +878,7 @@ func (d *DeviceLoRa) setSpreadingFactor(sf lora.SpreadFactor) error {
}
func (d *DeviceLoRa) setSyncWord(sync byte) error {
return d.write8(regSYNC_WORD, sync)
return d.Write8(regSYNC_WORD, sync)
}
// enableLowDataRateOptimization enables/disables Low Data Rate Optimization, a
@@ -912,7 +912,7 @@ func (d *DeviceLoRa) SetSymbolTimeout(symbTimeout uint16) (err error) {
if err != nil {
return err
}
return d.write8(regSYMB_TIMEOUT_LSB, byte(symbTimeout))
return d.Write8(regSYMB_TIMEOUT_LSB, byte(symbTimeout))
}
// setCodingRate sets the error coding rate. The value must be between 4/5 and 4/8.
@@ -924,7 +924,7 @@ func (d *DeviceLoRa) setCodingRate(cr lora.CodingRate) error {
}
// setHopPeriod sets number of symbol periods between frequency hops. (0 = disabled).
func (d *DeviceLoRa) setHopPeriod(val uint8) error { return d.write8(regHOP_PERIOD, val) }
func (d *DeviceLoRa) setHopPeriod(val uint8) error { return d.Write8(regHOP_PERIOD, val) }
func (d *DeviceLoRa) writeMasked8(addr uint8, mask, value byte) error {
if value != 0 && value&^mask != 0 {
@@ -938,7 +938,7 @@ func (d *DeviceLoRa) writeMasked8(addr uint8, mask, value byte) error {
existing &^= mask // remove mask bits from register value.
existing |= mask & value // add value's bits as masked.
err = d.write8(addr, existing)
err = d.Write8(addr, existing)
if debugBufSize > 0 {
d.debugMask[addr] = mask
}
@@ -957,7 +957,7 @@ func (d *DeviceLoRa) read8(addr byte) (byte, error) {
return readBuf[1], err
}
func (d *DeviceLoRa) write8(addr, value byte) error {
func (d *DeviceLoRa) Write8(addr, value byte) error {
readBuf := make([]byte, 2)
writeBuf := []byte{addr | (1 << 7), value} // set write bit.
d.csEnable(true)
@@ -1004,20 +1004,20 @@ func (d *DeviceLoRa) ReadTemperature() (celsius int8, err error) {
// switching to FSK/OOK mode and back to LoRa mode.
defer func() {
// Put chip in sleep to let us switch back to LoRa mode.
d.write8(regOP_MODE, opmSLEEP)
d.Write8(regOP_MODE, opmSLEEP)
time.Sleep(15 * time.Millisecond)
err = d.SetOpMode(OpSleep) // Back to LoRa mode. Only error that matters.
}()
// Sequence taken from page 89.
d.write8(regOP_MODE, opmSLEEP) // Put chip in sleep to let us switch to FSK/OOK mode.
d.Write8(regOP_MODE, opmSLEEP) // Put chip in sleep to let us switch to FSK/OOK mode.
time.Sleep(15 * time.Millisecond)
d.write8(regOP_MODE, opmSTANDBY)
d.Write8(regOP_MODE, opmSTANDBY)
time.Sleep(1000 * time.Microsecond) // Wait for oscillator startup.
d.write8(regOP_MODE, opmFSRX)
d.Write8(regOP_MODE, opmFSRX)
d.writeMasked8(regImageCal, 1, 0) // Set TempMonitorOff = 0 (enables the sensor). It is not required to wait for the PLL Lock indication
time.Sleep(140 * time.Microsecond)
d.writeMasked8(regImageCal, 1, 1) // Set TempMonitorOff = 1 (disables the sensor).
d.write8(regOP_MODE, opmSLEEP)
d.Write8(regOP_MODE, opmSLEEP)
value, _ := d.read8(regTemp)
// Following calculation maps
value = 255 - 2*(value-64)
@@ -1028,7 +1028,7 @@ func (d *DeviceLoRa) readerToLastPacket() (_ *fifoReader, err error) {
// IRQ check according to page 41 of the datasheet.
// Flags must not be asserted in order to ensure packet reception has terminated succesfully.
const mustBeUnset = irqRXDONE_MASK | irqHEADER_MASK | irqCRCERR_MASK | irqTXDONE_MASK
d.write8(regIRQ_FLAGS, mustBeUnset)
d.Write8(regIRQ_FLAGS, mustBeUnset)
var irqFlags uint8
for count := 0; count < 100; count++ {
irqFlags, err = d.read8(regIRQ_FLAGS)
@@ -1056,7 +1056,7 @@ func (d *DeviceLoRa) readerToLastPacket() (_ *fifoReader, err error) {
if numBytes == 0 {
return nil, errors.New("readerToNextPacket called with RX_NB_BYTES=0")
}
err = d.write8(regFIFO_ADDR_PTR, curraddr)
err = d.Write8(regFIFO_ADDR_PTR, curraddr)
if err != nil {
return nil, err
}