121 lines
2.7 KiB
Go
121 lines
2.7 KiB
Go
package message
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import (
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"fmt"
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"strings"
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)
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// BtmTimeSyncCheckFrame BTM发往ATP的时间校验帧
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type BtmTimeSyncCheckFrame struct {
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//帧ID
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FId CanFrameId
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//T2时刻
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//当收到某一流水号的ATP查询帧后，BTM将记录接收到该查询帧的时间值做为T2时刻。
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T2 uint32
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//T3时刻
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//BTM将在T3时刻发送回复帧给ATP，并保持流水号与ATP查询帧一致。
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T3 uint32
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IsTrainPcSim bool
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}
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func NewBtmTimeSyncCheckFrame(sn byte, isTrainPcSim bool) *BtmTimeSyncCheckFrame {
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return &BtmTimeSyncCheckFrame{
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FId: *NewCanFrameId(CAN_ADDR_RSP_ATP, CAN_ADDR_RSP_BTM, CAN_FRAME_TIME_SYNC_RSP, sn),
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//FId: *NewCanFrameId(0x00, 0x00, 0x35, sn),
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IsTrainPcSim: isTrainPcSim,
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}
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}
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func (f *BtmTimeSyncCheckFrame) Decode(cf *CanetFrame) bool {
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f.FId = cf.CanId
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//
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reader := NewCanBitsReader(cf.CanData, 8)
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//T2
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t21, t21Ok := reader.ReadByte()
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if !t21Ok {
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return false
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}
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t22, t22Ok := reader.ReadByte()
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if !t22Ok {
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return false
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}
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t23, t23Ok := reader.ReadByte()
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if !t23Ok {
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return false
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}
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t24, t24Ok := reader.ReadByte()
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if !t24Ok {
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return false
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}
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f.T2 = 0
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f.T2 |= uint32(t21) << 24
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f.T2 |= uint32(t22) << 16
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f.T2 |= uint32(t23) << 8
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f.T2 |= uint32(t24)
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//T3
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t31, t31Ok := reader.ReadByte()
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if !t31Ok {
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return false
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}
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t32, t32Ok := reader.ReadByte()
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if !t32Ok {
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return false
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}
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t33, t33Ok := reader.ReadByte()
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if !t33Ok {
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return false
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}
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t34, t34Ok := reader.ReadByte()
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if !t34Ok {
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return false
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}
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f.T3 = 0
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f.T3 |= uint32(t31) << 24
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f.T3 |= uint32(t32) << 16
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f.T3 |= uint32(t33) << 8
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f.T3 |= uint32(t34)
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//
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return true
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}
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func (f *BtmTimeSyncCheckFrame) Encode() *CanetFrame {
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cf := &CanetFrame{}
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cf.IsTrainPcSim = f.IsTrainPcSim
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cf.CanId = f.FId
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cf.CanLen = 8
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cf.FF = true
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cf.RTR = false
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//
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writer := NewCanBitsWriter(8)
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//
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timeByteMsk := uint32(0x00_00_00_ff)
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//t2
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t21 := byte((f.T2 >> 24) & timeByteMsk)
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t22 := byte((f.T2 >> 16) & timeByteMsk)
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t23 := byte((f.T2 >> 8) & timeByteMsk)
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t24 := byte(f.T2 & timeByteMsk)
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writer.AddByte(t21)
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writer.AddByte(t22)
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writer.AddByte(t23)
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writer.AddByte(t24)
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//t3
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t31 := byte((f.T3 >> 24) & timeByteMsk)
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t32 := byte((f.T3 >> 16) & timeByteMsk)
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t33 := byte((f.T3 >> 8) & timeByteMsk)
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t34 := byte(f.T3 & timeByteMsk)
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writer.AddByte(t31)
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writer.AddByte(t32)
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writer.AddByte(t33)
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writer.AddByte(t34)
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//
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cf.CanData = writer.(CanBusData).GetData()
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return cf
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}
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func (f *BtmTimeSyncCheckFrame) String() string {
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sb := strings.Builder{}
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sb.WriteString(fmt.Sprintf("BtmTimeSyncCheckFrame ID1 = 0x%0x, ID2 = 0x%0x, ID3 = 0x%0x, ID4 = 0x%0x,",
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f.FId.ID1, f.FId.ID2, f.FId.ID3, f.FId.ID4))
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sb.WriteString(fmt.Sprintf("T2 = %d", f.T2))
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sb.WriteString(fmt.Sprintf(",T3 = %d", f.T3))
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return sb.String()
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}
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