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lora/lorawan: completed functions needed for Join OTAA process

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Signed-off-by: deadprogram <ron@hybridgroup.com>
This commit is contained in:
deadprogram
2023-01-12 13:19:18 +01:00
committed by Ron Evans
parent 999f42dc03
commit 4bc8ecdbdd
3 changed files with 44 additions and 29 deletions
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lora/lorawan/adaptor.go
+15 -10
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@@ -6,10 +6,22 @@ import (
"tinygo.org/x/drivers/lora"
)
var (
ErrNoJoinAcceptReceived = errors.New("no JoinAccept packet received")
ErrNoRadioAttached = errors.New("no LoRa radio attached")
ErrInvalidEuiLength = errors.New("invalid EUI length")
ErrInvalidAppKeyLength = errors.New("invalid AppKey length")
ErrInvalidPacketLength = errors.New("invalid packet length")
ErrInvalidDevAddrLength = errors.New("invalid DevAddr length")
ErrInvalidMic = errors.New("invalid Mic")
ErrFrmPayloadTooLarge = errors.New("FRM payload too large")
)
const LORA_RXTX_TIMEOUT = 1000
var (
ActiveRadio lora.Radio
Retries = 15
)
func UseRadio(r lora.Radio) {
@@ -23,7 +35,7 @@ func Join(otaa *Otaa, session *Session) error {
var resp []uint8
if ActiveRadio == nil {
return errors.New("no LoRa radio attached")
return ErrNoRadioAttached
}
otaa.Init()
@@ -42,9 +54,8 @@ func Join(otaa *Otaa, session *Session) error {
}
// Wait for JoinAccept
//println("lorawan: Wait for JOINACCEPT for 10s")
ActiveRadio.SetIqMode(1) // IQ Inverted
for i := 0; i < 15; i++ {
for i := 0; i < Retries; i++ {
resp, err = ActiveRadio.Rx(LORA_RXTX_TIMEOUT)
if err != nil {
return err
@@ -54,19 +65,13 @@ func Join(otaa *Otaa, session *Session) error {
}
}
if resp == nil {
return errors.New("no JoinAccept packet received")
return ErrNoJoinAcceptReceived
}
//println("lorawan: Received packet: len=", len(resp), "payload=", bytesToHexString(resp))
err = otaa.DecodeJoinAccept(resp, session)
if err != nil {
return err
}
// println("lorawan: Valid JOINACCEPT, now connected")
// println("lorawan: | DevAddr: ", bytesToHexString(r.Session.DevAddr[:]), " (LSB)")
// println("lorawan: | NetID : ", bytesToHexString(r.Otaa.NetID[:]))
// println("lorawan: | NwkSKey: ", bytesToHexString(r.Session.NwkSKey[:]))
// println("lorawan: | AppSKey: ", bytesToHexString(r.Session.AppSKey[:]))
return nil
}