From fc6aad0876d9d4e471bbe790429795c515415514 Mon Sep 17 00:00:00 2001
From: Juraj Andrassy <juraj.andrassy@gmail.com>
Date: Sat, 23 Dec 2023 11:46:49 +0100
Subject: [PATCH] EthernetC33 debugging

---
 libraries/Ethernet/src/Ethernet.cpp  |  7 +++----
 libraries/lwIpWrapper/src/CNetIf.cpp | 17 ++++++++++-------
 libraries/lwIpWrapper/src/CNetIf.h   |  2 +-
 3 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/libraries/Ethernet/src/Ethernet.cpp b/libraries/Ethernet/src/Ethernet.cpp
index 8f0b789c..22c90ff6 100644
--- a/libraries/Ethernet/src/Ethernet.cpp
+++ b/libraries/Ethernet/src/Ethernet.cpp
@@ -76,9 +76,8 @@ void CEthernet::setDNS(IPAddress dns_server) {
 /* -------------------------------------------------------------------------- */
 int CEthernet::begin(uint8_t *mac, unsigned long timeout, unsigned long responseTimeout) {
 /* -------------------------------------------------------------------------- */  
-  int ret = (int)CLwipIf::getInstance().setMacAddress(NI_ETHERNET, mac);
-  begin(timeout, responseTimeout);
-  return ret;
+  CLwipIf::getInstance().setMacAddress(NI_ETHERNET, mac);
+  return begin(timeout, responseTimeout);
 }
 
 /* -------------------------------------------------------------------------- */
@@ -111,7 +110,7 @@ int CEthernet::begin(uint8_t *mac_address, IPAddress local_ip, IPAddress dns_ser
 /* -------------------------------------------------------------------------- */
 int CEthernet::begin(uint8_t *mac, IPAddress local_ip, IPAddress dns_server, IPAddress gateway, IPAddress subnet, unsigned long timeout, unsigned long responseTimeout) {
 /* -------------------------------------------------------------------------- */  
-  CLwipIf::getInstance().setMacAddress(NI_ETHERNET, mac_address);
+  CLwipIf::getInstance().setMacAddress(NI_ETHERNET, mac);
   return begin(local_ip, dns_server, gateway, subnet);
 }
 
diff --git a/libraries/lwIpWrapper/src/CNetIf.cpp b/libraries/lwIpWrapper/src/CNetIf.cpp
index d0d1ce92..53f01dd7 100644
--- a/libraries/lwIpWrapper/src/CNetIf.cpp
+++ b/libraries/lwIpWrapper/src/CNetIf.cpp
@@ -352,16 +352,19 @@ err_t CEth::output(struct netif* _ni, struct pbuf *p) {
     err_t errval = ERR_OK;
 
     if(eth_output_can_transimit()) {
-        uint16_t tx_buf_dim = 0;
+        uint16_t tx_buf_dim = p->tot_len;
 
         // TODO analyze the race conditions that may arise from sharing a non synchronized buffer
         uint8_t *tx_buf = eth_get_tx_buffer(&tx_buf_dim);
-        assert (p->tot_len <= tx_buf_dim);
+        if (p->tot_len <= tx_buf_dim) {
 
-        uint16_t bytes_actually_copied = pbuf_copy_partial(p, tx_buf, p->tot_len, 0);
+            uint16_t bytes_actually_copied = pbuf_copy_partial(p, tx_buf, p->tot_len, 0);
 
-        if (bytes_actually_copied > 0 && !eth_output(tx_buf, bytes_actually_copied)) {
-            errval = ERR_IF;
+            if (bytes_actually_copied > 0 && !eth_output(tx_buf, bytes_actually_copied)) {
+                errval = ERR_IF;
+            }
+        } else {
+            errval = ERR_MEM;
         }
     } else {
         errval = ERR_INPROGRESS;
@@ -516,7 +519,7 @@ bool CLwipIf::setMacAddress(NetIfType_t type, uint8_t* mac)
         eth_set_mac_address(mac);
     }
 
-    CLwipIf::getInstance().startSyncRequest();
+    CLwipIf::getInstance().restartAsyncRequest();
     return true;
 }
 
@@ -546,7 +549,7 @@ int CLwipIf::getMacAddress(NetIfType_t type, uint8_t* mac)
         rv = MAC_ADDRESS_DIM;
     }
 
-    CLwipIf::getInstance().startSyncRequest();
+    CLwipIf::getInstance().restartAsyncRequest();
     return rv;
 }
 
diff --git a/libraries/lwIpWrapper/src/CNetIf.h b/libraries/lwIpWrapper/src/CNetIf.h
index e8b91353..0b805d20 100644
--- a/libraries/lwIpWrapper/src/CNetIf.h
+++ b/libraries/lwIpWrapper/src/CNetIf.h
@@ -148,7 +148,7 @@ class CNetIf {
     unsigned long dhcp_timeout;
     DhcpSt_t dhcp_st;
     bool dhcp_started;
-    bool dhcp_acquired;
+    volatile bool dhcp_acquired;
     uint8_t _dhcp_lease_state;
     void dhcp_task();
     void dhcp_reset();