cn_470_510_20_a.go

// Copyright © 2021 The Things Network Foundation, The Things Industries B.V.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package band

import "go.thethings.network/lorawan-stack/v3/pkg/ttnpb"

const (
	// CN_470_510_20_A is the ID of the Chinese 470-510Mhz band which uses a 20 MHz antenna, type A
	CN_470_510_20_A = "CN_470_510_20_A"
)

var (
	cn47051020AUplinkChannels = func(minDataRateIndex ttnpb.DataRateIndex) []Channel {
		uplinkChannels := make([]Channel, 0, 64)
		// 20 MHz Type A Group 1
		for i := 0; i < 32; i++ {
			uplinkChannels = append(uplinkChannels, Channel{
				Frequency:   uint64(470300000 + 200000*i),
				MinDataRate: minDataRateIndex,
				MaxDataRate: ttnpb.DataRateIndex_DATA_RATE_5,
			})
		}
		// 20 MHz Type A Group 2
		for i := 0; i < 32; i++ {
			uplinkChannels = append(uplinkChannels, Channel{
				Frequency:   uint64(503500000 + 200000*i),
				MinDataRate: minDataRateIndex,
				MaxDataRate: ttnpb.DataRateIndex_DATA_RATE_5,
			})
		}
		return uplinkChannels
	}

	cn47051020ADownlinkChannels = func(minDataRateIndex ttnpb.DataRateIndex) []Channel {
		downlinkChannels := make([]Channel, 0, 64)
		// 20 MHz Type A Group 1
		for i := 0; i < 32; i++ {
			downlinkChannels = append(downlinkChannels, Channel{
				Frequency:   uint64(483900000 + 200000*i),
				MinDataRate: minDataRateIndex,
				MaxDataRate: ttnpb.DataRateIndex_DATA_RATE_5,
			})
		}
		// 20 MHz Type A Group 2
		for i := 0; i < 32; i++ {
			downlinkChannels = append(downlinkChannels, Channel{
				Frequency:   uint64(490300000 + 200000*i),
				MinDataRate: minDataRateIndex,
				MaxDataRate: ttnpb.DataRateIndex_DATA_RATE_5,
			})
		}
		return downlinkChannels
	}
)