From 0446055537fe8147abe399110325587c6db3b727 Mon Sep 17 00:00:00 2001
From: Wolfgang Hottgenroth <w.hottgenroth@krohne.com>
Date: Sat, 7 Nov 2020 21:14:04 +0100
Subject: [PATCH] define to use W5500 chip and mark SPI functions to be
 replaced as weak

---
 Ethernet/wizchip_conf.c | 12 ++++++------
 Ethernet/wizchip_conf.h |  4 ++++
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/Ethernet/wizchip_conf.c b/Ethernet/wizchip_conf.c
index f6497ba..68104c6 100644
--- a/Ethernet/wizchip_conf.c
+++ b/Ethernet/wizchip_conf.c
@@ -80,7 +80,7 @@ void 	  wizchip_cris_exit(void)          {}
  * null function is called.
  */
 //void 	wizchip_cs_select(void)            {};
-void 	wizchip_cs_select(void)            {}
+__attribute__((weak)) void 	wizchip_cs_select(void)            {}
 
 /**
  * @brief Default function to deselect chip.
@@ -88,7 +88,7 @@ void 	wizchip_cs_select(void)            {}
  * null function is called.
  */
 //void 	wizchip_cs_deselect(void)          {};
-void 	wizchip_cs_deselect(void)          {}
+__attribute__((weak)) void wizchip_cs_deselect(void)          {}
 
 /**
  * @brief Default function to read in direct or indirect interface.
@@ -114,7 +114,7 @@ void 	wizchip_bus_writedata(uint32_t AddrSel, iodata_t wb)  { *((volatile iodata
  * null function is called.
  */
 //uint8_t wizchip_spi_readbyte(void)        {return 0;};
-uint8_t wizchip_spi_readbyte(void)        {return 0;}
+__attribute__((weak)) uint8_t wizchip_spi_readbyte(void)        {return 0;}
 
 /**
  * @brief Default function to write in SPI interface.
@@ -122,7 +122,7 @@ uint8_t wizchip_spi_readbyte(void)        {return 0;}
  * null function is called.
  */
 //void 	wizchip_spi_writebyte(uint8_t wb) {};
-void 	wizchip_spi_writebyte(uint8_t wb) {}
+__attribute__((weak)) void 	wizchip_spi_writebyte(uint8_t wb) {}
 
 /**
  * @brief Default function to burst read in SPI interface.
@@ -130,7 +130,7 @@ void 	wizchip_spi_writebyte(uint8_t wb) {}
  * null function is called.
  */
 //void 	wizchip_spi_readburst(uint8_t* pBuf, uint16_t len) 	{}; 
-void 	wizchip_spi_readburst(uint8_t* pBuf, uint16_t len) 	{}
+__attribute__((weak)) void 	wizchip_spi_readburst(uint8_t* pBuf, uint16_t len) 	{}
 
 /**
  * @brief Default function to burst write in SPI interface.
@@ -138,7 +138,7 @@ void 	wizchip_spi_readburst(uint8_t* pBuf, uint16_t len) 	{}
  * null function is called.
  */
 //void 	wizchip_spi_writeburst(uint8_t* pBuf, uint16_t len) {};
-void 	wizchip_spi_writeburst(uint8_t* pBuf, uint16_t len) {}
+__attribute__((weak)) void 	wizchip_spi_writeburst(uint8_t* pBuf, uint16_t len) {}
 
 /**
  * @\ref _WIZCHIP instance
diff --git a/Ethernet/wizchip_conf.h b/Ethernet/wizchip_conf.h
index 33958a8..11bdd4f 100644
--- a/Ethernet/wizchip_conf.h
+++ b/Ethernet/wizchip_conf.h
@@ -71,6 +71,10 @@ extern "C" {
 #define W5300						5300
 #define W5500						5500
 
+
+#define _WIZCHIP_ W5500
+
+
 #ifndef _WIZCHIP_
 #define _WIZCHIP_                      W5100S   // W5100, W5100S, W5200, W5300, W5500
 #endif