From 9aa53db35f5e1a44b9257c4faaa4542c61f6a455 Mon Sep 17 00:00:00 2001
From: Sander Speetjens <sander.speetjens@gmail.com>
Date: Thu, 30 Nov 2023 11:06:26 +0100
Subject: [PATCH] modbus_tcp

add lwip_strerr
fix tcp_close
---
 tests/mocs.c | 10 +++++++++-
 tests/mocs.h |  4 +++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/tests/mocs.c b/tests/mocs.c
index 4c84383..0137e17 100644
--- a/tests/mocs.c
+++ b/tests/mocs.c
@@ -141,10 +141,11 @@ void tcp_poll(void* pcb, void* poll, uint8_t interval) {
     dprint("tcp_poll\n");
 }
 
-void tcp_close(void* pcb) {
+err_t tcp_close(void* pcb) {
     UNUSED(pcb);
 
     dprint("tcp_close\n");
+    return ERR_OK;
 }
 
 void tcp_write(void* pcb, const char* data, size_t len, uint8_t apiflags) {
@@ -185,4 +186,11 @@ void pbuf_free(struct pbuf* p) {
 uint16_t pbuf_copy_partial(const struct pbuf* buf, void* dataptr, uint16_t len, uint16_t offset) {
     memcpy(dataptr, ((uint8_t*)(buf->payload)) + offset, len);
     return len;
+}
+
+const char* lwip_strerr(err_t err) {
+    UNUSED(err);
+
+    dprint("lwip_sterr\n");
+    return NULL;
 }
\ No newline at end of file
diff --git a/tests/mocs.h b/tests/mocs.h
index 9fcc977..6e0aa5c 100644
--- a/tests/mocs.h
+++ b/tests/mocs.h
@@ -120,7 +120,7 @@ void tcp_recv(void* pcb, tcp_recv_fn arg);
 void tcp_setprio(void* pcb, uint8_t prio);
 void tcp_err(void* pcb, void* err);
 void tcp_poll(void* pcb, void* poll, uint8_t interval);
-void tcp_close(void* pcb);
+err_t tcp_close(void* pcb);
 
 void tcp_write(void* pcb, const char* data, size_t len, uint8_t apiflags);
 void tcp_output(void* pcb);
@@ -131,6 +131,8 @@ size_t tcp_sndbuf(void* pcb);
 
 uint16_t pbuf_copy_partial(const struct pbuf* buf, void* dataptr, uint16_t len, uint16_t offset);
 
+const char* lwip_strerr(err_t err);
+
 #ifdef __cplusplus
 }
 #endif
\ No newline at end of file