继电器、读卡器，都用统一的modbus协议

internal/middleware/relay.go

@@ -8,12 +8,12 @@ import (
 )
 
 // RelayMaster 继电器中间件
-func RelayMaster(r *relay.Device) leaf.HandlerFunc {
+func RelayMaster(r relay.Relay) leaf.HandlerFunc {
 	return func(c *leaf.Context) {
 		pm := leaf.Value[*schema.PlayModal](c, PayloadJSONKey)
 		if r != nil && pm.Power {
-			r.On(1)
-			defer r.Off(1)
+			r.On(0)
+			defer r.Off(0)
 
 			zap.S().Infoln("开启电源")
 			defer zap.S().Infoln("关闭电源")