From 4ac7c1b66e11d318601c537dd34c3b8a96ca0301 Mon Sep 17 00:00:00 2001
From: follower <follower@3ee9b42a-b53c-0410-a25e-f0b6218d5d5b>
Date: Sat, 3 Nov 2007 11:52:37 +0000
Subject: [PATCH] For Arduino we don't want to re-configure the SPI each time
 as we assume it's configured elsewhere. We also only want to touch the chip
 select pin unlike the original driver code.

git-svn-id: svn+ssh://oldsvn/home/mlalondesvn/svn/cral@43 3ee9b42a-b53c-0410-a25e-f0b6218d5d5b
---
 branches/follower/wiz810mj/src/lib/w5100.c | 32 ++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/branches/follower/wiz810mj/src/lib/w5100.c b/branches/follower/wiz810mj/src/lib/w5100.c
index 1e4b59d..ab55c49 100644
--- a/branches/follower/wiz810mj/src/lib/w5100.c
+++ b/branches/follower/wiz810mj/src/lib/w5100.c
@@ -81,6 +81,7 @@ uint8 IINCHIP_WRITE(uint16 addr,uint8 data)
 #elif (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_SPI_MODE__)
 	   //SPI MODE I/F
 	   IINCHIP_ISR_DISABLE();
+#ifndef __ARDUINO__
 	   DDRB  = 0x07;   	                     	// MISO=input, etc.=output
 		                                             // PB3(MISO), PB2(MOSI), PB1(SCK), PB0(/SS)    
 	   PORTB = 0x01;                             // CS=1, waiting for SPI start
@@ -88,6 +89,9 @@ uint8 IINCHIP_WRITE(uint16 addr,uint8 data)
 	   SPSR  = 0x01;                             // SPI2X=0 
 	      
 	   PORTB = 0x00;                             // CS=0, SPI start 
+#else
+	   PORTB = PORTB & ~CS_PIN;                    // CS=0, SPI start
+#endif // ifndef __ARDUINO__
 	   SPDR  = 0xF0;
 	   while((SPSR&0x80)==0x00);
 	   SPDR  = (uint8)((addr & 0xFF00) >> 8);
@@ -96,8 +100,12 @@ uint8 IINCHIP_WRITE(uint16 addr,uint8 data)
 	   while((SPSR&0x80)==0x00);
 	   SPDR  = data;
 	   while((SPSR&0x80)==0x00);
+#ifndef __ARDUINO__
 	   PORTB = 0x01;                             // SPI end
 	                                                // CS=1, waiting for SPI start 
+#else
+	   PORTB = PORTB | CS_PIN;                             // SPI end
+#endif // ifndef __ARDUINO__
 	   IINCHIP_ISR_ENABLE();   
 #else
 	#error "unknown bus type"
@@ -129,6 +137,7 @@ uint8 IINCHIP_READ(uint16 addr)
 #elif (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_SPI_MODE__)
 	   //SPI MODE I/F
 	   IINCHIP_ISR_DISABLE();
+#ifndef __ARDUINO__
 	   DDRB  = 0x07;   	                     	// MISO=input, etc.=output  
 		                                             // PB3(MISO), PB2(MOSI), PB1(SCK), PB0(/SS)
 	   PORTB = 0x01;                             // CS=1, waiting for SPI start
@@ -136,6 +145,9 @@ uint8 IINCHIP_READ(uint16 addr)
 	   SPSR  = 0x01;                             // SPI2X=0 
 	      
 	   PORTB = 0x00;                             // CS=0, SPI start
+#else
+	   PORTB = PORTB & ~CS_PIN;                    // CS=0, SPI start
+#endif // ifndef __ARDUINO__
 	   SPDR  = 0x0F;
 	   while((SPSR&0x80)==0x00);
 	   SPDR  = (uint8)((addr & 0xFF00) >> 8);
@@ -145,8 +157,12 @@ uint8 IINCHIP_READ(uint16 addr)
 	   SPDR = 0x00;                              // write dummy data
 	   while((SPSR&0x80)==0x00);
 	   data = SPDR;                              // read data 
+#ifndef __ARDUINO__
 	   PORTB = 0x01;                             // SPI end
 	                                                // CS=1, waiting for SPI start 
+#else
+	   PORTB = PORTB | CS_PIN;                             // SPI end
+#endif // ifndef __ARDUINO__
 	   IINCHIP_ISR_ENABLE();
 #else
 	#error "unknown bus type"
@@ -178,6 +194,7 @@ uint16 wiz_write_buf(uint16 addr,uint8* buf,uint16 len)
       
 	   for(ii=0;ii<len;ii++)
 	   {
+#ifndef __ARDUINO__
 	   DDRB  = 0x07;   	                     	// MISO=input, etc.=output
 		                                             // PB3(MISO), PB2(MOSI), PB1(SCK), PB0(/SS)      
 	   PORTB = 0x01;                             // CS=1, waiting for SPI start
@@ -185,6 +202,9 @@ uint16 wiz_write_buf(uint16 addr,uint8* buf,uint16 len)
 	   SPSR  = 0x01;                             // SPI2X=0 
 	      
 	   PORTB = 0x00;                             // CS=0, SPI start
+#else
+	   PORTB = PORTB & ~CS_PIN;                    // CS=0, SPI start
+#endif // ifndef __ARDUINO__
 	   SPDR  = 0xF0;
 	   while((SPSR&0x80)==0x00);
 	   SPDR  = (uint8)(((addr+ii) & 0xFF00) >> 8);
@@ -193,8 +213,12 @@ uint16 wiz_write_buf(uint16 addr,uint8* buf,uint16 len)
 	   while((SPSR&0x80)==0x00);
 	   SPDR  = buf[ii];
 	   while((SPSR&0x80)==0x00);
+#ifndef __ARDUINO__
 	   PORTB = 0x01;                              // SPI end
 	                                                 // CS=1, waiting for SPI start 
+#else
+	   PORTB = PORTB | CS_PIN;                             // SPI end
+#endif // ifndef __ARDUINO__
 	   }
 	   IINCHIP_ISR_ENABLE();	   
 #else
@@ -226,6 +250,7 @@ uint16 wiz_read_buf(uint16 addr, uint8* buf,uint16 len)
 	   uint16 iii=0;
 	   for (iii=0; iii<len; iii++)
       	   {
+#ifndef __ARDUINO__
 	   DDRB  = 0x07;   	                     	// MISO=input, etc.=output
 		                                             // PB3(MISO), PB2(MOSI), PB1(SCK), PB0(/SS)    
 	   PORTB = 0x01;                             // CS=1, waiting for SPI start
@@ -233,6 +258,9 @@ uint16 wiz_read_buf(uint16 addr, uint8* buf,uint16 len)
 	   SPSR  = 0x01;                             // SPI2X=0 
 	      
 	   PORTB = 0x00;                             // CS=0, SPI start
+#else
+	   PORTB = PORTB & ~CS_PIN;                    // CS=0, SPI start
+#endif // ifndef __ARDUINO__
 	   SPDR  = 0x0F;
 	   while((SPSR&0x80)==0x00);
 	   SPDR  = (uint8)(((addr+iii) & 0xFF00) >> 8);
@@ -245,8 +273,12 @@ uint16 wiz_read_buf(uint16 addr, uint8* buf,uint16 len)
 	   while((SPSR&0x80)==0x00);
 	   buf[iii]=SPDR;                            // read data
 	   //}
+#ifndef __ARDUINO__
 	   PORTB = 0x01;                             // SPI end
 	                                                // CS=1, waiting for SPI start 
+#else
+	   PORTB = PORTB | CS_PIN;                             // SPI end
+#endif // ifndef __ARDUINO__
 	   }
 	   IINCHIP_ISR_ENABLE();
 #else