w5500: initial version the driver (#788)

Thank you, @nrwiersma for working on this and @soypat for review. Now merging.
2026-09-04 22:09:00 +00:00 · 2025-11-12 10:00:21 +02:00
parent 09fd01340b
commit 4b831af52b
6 changed files with 923 additions and 0 deletions
@@ -0,0 +1,88 @@
+package w5500
+
+// Common Registers.
+const (
+	regMode        = 0x0000
+	regGatewayAddr = 0x0001
+	regSubnetMask  = 0x0005
+	regMAC         = 0x0009
+	regIPAddr      = 0x000F
+	regIntLevel    = 0x0013
+	regInt         = 0x0015
+	regIntMask     = 0x0016
+	regSockInt     = 0x0017
+	regSockIntMask = 0x0018
+	regRetryTime   = 0x0019
+	regRetryN      = 0x001B
+	// ... PPP registers, not needed
+	regPHYCfg  = 0x002E
+	regChipVer = 0x0039
+)
+
+// Socket Registers.
+const (
+	sockMode           = 0x0000
+	sockCmd            = 0x0001
+	sockInt            = 0x0002
+	sockStatus         = 0x0003
+	sockSrcPort        = 0x0004
+	sockDestMAC        = 0x0006
+	sockDestIP         = 0x000C
+	sockDestPort       = 0x0010
+	sockMaxSegSize     = 0x0012
+	sockIPTOS          = 0x0015
+	sockIPTTL          = 0x0016
+	sockRXBUFSize      = 0x001E
+	sockTXBUFSize      = 0x001F
+	sockTXFreeSize     = 0x0020
+	sockTXReadPtr      = 0x0022
+	sockTXWritePtr     = 0x0024
+	sockRXReceivedSize = 0x0026
+	sockRXReadPtr      = 0x0028
+	sockRXWritePtr     = 0x002A
+	sockIntMask        = 0x002C
+	sockKeepInt        = 0x002F
+)
+
+// Socket Commands.
+const (
+	sockCmdOpen       = 0x01
+	sockCmdClose      = 0x10
+	sockCmdListen     = 0x02
+	sockCmdConnect    = 0x04
+	sockCmdDisconnect = 0x08
+	sockCmdSend       = 0x20
+	sockCmdSendMacRaw = 0x21
+	sockCmdSendKeep   = 0x22
+	sockCmdRecv       = 0x40
+)
+
+// Socket Statuses.
+const (
+	sockStatusClosed      = 0x00
+	sockStatusInit        = 0x13
+	sockStatusListen      = 0x14
+	sockStatusEstablished = 0x17
+	sockStatusCloseWait   = 0x1C
+	sockStatusUdp         = 0x22
+	sockStatusMacRaw      = 0x42
+	// Temporary TCP states
+	sockStatusSynSent  = 0x15
+	sockStatusSynRecv  = 0x16
+	sockStatusFinWait  = 0x18
+	sockStatusClosing  = 0x1A
+	sockStatusTimeWait = 0x1B
+	sockStatusLastAck  = 0x1D
+	sockStatusUnknown  = 0xFF
+)
+
+// Socket Interrupts.
+const (
+	sockIntConnect uint8 = 1 << iota
+	sockIntDisconnect
+	sockIntReceive
+	sockIntTimeout
+	sockIntSendOK
+
+	sockIntUnknown uint8 = 0
+)