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lorawan: increment devnonce don't just create a new one each join attempt

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Signed-off-by: deadprogram <ron@hybridgroup.com>
This commit is contained in:
deadprogram
2023-01-15 21:28:30 +01:00
parent 2bb10bf6b9
commit b0286910c4
1 changed files with 7 additions and 1 deletions
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lora/lorawan/otaa.go
+7 -1
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@@ -31,6 +31,12 @@ func (o *Otaa) generateDevNonce() {
o.devNonce[1] = rnd[1] o.devNonce[1] = rnd[1]
} }
func (o *Otaa) incrementDevNonce() {
nonce := uint16(o.devNonce[1])<<8 | uint16(o.devNonce[0]) + 1
o.devNonce[0] = uint8(nonce & 0xff)
o.devNonce[1] = uint8((nonce >> 8) & 0xff)
}
// Set configures the Otaa AppEUI, DevEUI, AppKey for the device // Set configures the Otaa AppEUI, DevEUI, AppKey for the device
func (o *Otaa) Set(appEUI []uint8, devEUI []uint8, appKey []uint8) { func (o *Otaa) Set(appEUI []uint8, devEUI []uint8, appKey []uint8) {
o.SetAppEUI(appEUI) o.SetAppEUI(appEUI)
@@ -99,7 +105,7 @@ func (o *Otaa) SetNetID(netID []uint8) error {
// GenerateJoinRequest Generates a LoraWAN Join request // GenerateJoinRequest Generates a LoraWAN Join request
func (o *Otaa) GenerateJoinRequest() ([]uint8, error) { func (o *Otaa) GenerateJoinRequest() ([]uint8, error) {
o.generateDevNonce() o.incrementDevNonce()
// TODO: Add checks // TODO: Add checks
o.buf = o.buf[:0] o.buf = o.buf[:0]