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sx127x: Ajout du support d'interruptions RXTimeout (DIO1)

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This commit is contained in:
Olivier Fauchon
2022-02-02 01:18:24 +01:00
committed by Ron Evans
parent dc4f0c974a
commit f15eec822f
3 changed files with 62 additions and 43 deletions
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sx127x/registers.go
+3
View File
@@ -120,4 +120,7 @@ const (
SX127X_OPMODE_RX = uint8(0x05)
SX127X_OPMODE_RX_SINGLE = uint8(0x06)
SX127X_OPMODE_CAD = uint8(0x07)
SX127X_LORA_MAC_PUBLIC_SYNCWORD = 0x34
SX127X_LORA_MAC_PRIVATE_SYNCWORD = 0x14
)
sx127x/sx127x.go
+14 -18
View File
@@ -381,14 +381,14 @@ func (d *Device) LoraTx(pkt []uint8, timeoutMs uint32) error {
d.WriteRegister(SX127X_REG_LNA, SX127X_LNA_MAX_GAIN) // Set Low Noise Amplifier to MAX
d.SetLoraFrequency(d.loraConf.Freq)
d.SetLoraPreamble(d.loraConf.Preamble) //OK
d.SetLoraSyncWord(d.loraConf.SyncWord) // Should be ok
d.SetLoraBandwidth(d.loraConf.Bw) // OK
d.SetLoraSpreadingFactor(d.loraConf.Sf) // OK
d.SetLoraIqMode(d.loraConf.Iq) //OK
d.SetLoraPreamble(d.loraConf.Preamble)
d.SetLoraSyncWord(d.loraConf.SyncWord)
d.SetLoraBandwidth(d.loraConf.Bw)
d.SetLoraSpreadingFactor(d.loraConf.Sf)
d.SetLoraIqMode(d.loraConf.Iq)
d.SetLoraCodingRate(d.loraConf.Cr)
d.SetLoraCrc(d.loraConf.Crc == SX127X_LORA_CRC_ON)
d.SetTxPower(10, true)
d.SetTxPower(d.loraConf.LoraTxPowerDBm, true)
d.SetLoraHeaderMode(d.loraConf.HeaderType)
d.SetAgcAuto(SX127X_AGC_AUTO_ON)
@@ -417,7 +417,7 @@ func (d *Device) LoraTx(pkt []uint8, timeoutMs uint32) error {
msg := <-d.GetRadioEventChan()
if msg.EventType != RadioEventTxDone {
return errors.New("Unexpected Radio Event while TX")
return errors.New("Unexpected Radio Event while TX " + string(0x30+msg.EventType))
}
return nil
}
@@ -445,31 +445,27 @@ func (d *Device) LoraRx(timeoutMs uint32) ([]uint8, error) {
d.SetLoraIqMode(d.loraConf.Iq) //OK
d.SetLoraCodingRate(d.loraConf.Cr)
d.SetLoraCrc(d.loraConf.Crc == SX127X_LORA_CRC_ON)
d.SetTxPower(10, true)
d.SetTxPower(d.loraConf.LoraTxPowerDBm, true)
d.SetLoraHeaderMode(d.loraConf.HeaderType)
d.SetAgcAuto(SX127X_AGC_AUTO_ON)
// set the IRQ mapping DIO0=TxDone DIO1=NOP DIO2=NOP
d.WriteRegister(SX127X_REG_DIO_MAPPING_1, SX127X_MAP_DIO0_LORA_RXDONE|SX127X_MAP_DIO1_LORA_NOP|SX127X_MAP_DIO2_LORA_NOP)
// set the IRQ mapping DIO0=RxDone DIO1=RxTimeout DIO2=NOP
d.WriteRegister(SX127X_REG_DIO_MAPPING_1, SX127X_MAP_DIO0_LORA_RXDONE|SX127X_MAP_DIO1_LORA_RXTOUT|SX127X_MAP_DIO2_LORA_NOP)
// Clear all radio IRQ Flags
d.WriteRegister(SX127X_REG_IRQ_FLAGS, 0xFF)
// Mask all but TxDone
d.WriteRegister(SX127X_REG_IRQ_FLAGS_MASK, ^SX127X_IRQ_LORA_RXDONE_MASK)
// Mask all but RxDone
d.WriteRegister(SX127X_REG_IRQ_FLAGS_MASK, ^(SX127X_IRQ_LORA_RXDONE_MASK | SX127X_IRQ_LORA_RXTOUT_MASK))
// Switch to RX Mode
d.SetOpMode(SX127X_OPMODE_RX)
d.SetOpMode(SX127X_OPMODE_RX_SINGLE) //
// Wait for Radio Event
radioCh := d.GetRadioEventChan()
go func() {
time.Sleep(time.Millisecond * time.Duration(timeoutMs))
radioCh <- NewRadioEvent(RadioEventTimeout, SX127X_IRQ_LORA_RXTOUT_MASK, nil)
}()
msg := <-radioCh
if msg.EventType == RadioEventTimeout {
return nil, nil
} else if msg.EventType != RadioEventRxDone {
return nil, errors.New("Unexpected Radio Event while RX")
return nil, errors.New("Unexpected Radio Event while RX " + string(0x30+msg.EventType))
}
d.WriteRegister(SX127X_REG_FIFO_RX_BASE_ADDR, 0)