From eac2983285b4bc40250771fb5141aa63c76a9a90 Mon Sep 17 00:00:00 2001
From: "David A. Mellis" <d.mellis@arduino.cc>
Date: Wed, 30 Jul 2008 14:47:36 +0000
Subject: Adding ethernet library.

---
 libraries/Ethernet/utility/spi.h | 58 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100755 libraries/Ethernet/utility/spi.h

(limited to 'libraries/Ethernet/utility/spi.h')

diff --git a/libraries/Ethernet/utility/spi.h b/libraries/Ethernet/utility/spi.h
new file mode 100755
index 0000000..0bb30ba
--- /dev/null
+++ b/libraries/Ethernet/utility/spi.h
@@ -0,0 +1,58 @@
+//-----------------------------------------------------------------------------
+//AVR Mega168 SPI HAL
+#define BIT0							0x01
+#define BIT1							0x02
+#define BIT2							0x04
+#define BIT3							0x08
+#define BIT4							0x10
+#define BIT5							0x20
+#define BIT6							0x40
+#define BIT7							0x80
+
+#define SPI0_SS_BIT						BIT2
+#define SPI0_SS_DDR						DDRB
+#define SPI0_SS_PORT					PORTB
+
+#define SPI0_SCLK_BIT					BIT5
+#define SPI0_SCLK_DDR					DDRB
+#define SPI0_SCLK_PORT					PORTB
+
+#define	SPI0_MOSI_BIT					BIT3
+#define SPI0_MOSI_DDR					DDRB
+#define SPI0_MOSI_PORT					PORTB
+
+#define	SPI0_MISO_BIT					BIT4
+#define SPI0_MISO_DDR					DDRB
+#define SPI0_MISO_PORT					PORTB
+
+
+#define SPI0_WaitForReceive()				
+#define SPI0_RxData()	 				(SPDR)
+
+#define SPI0_TxData(Data)				(SPDR = Data)
+#define SPI0_WaitForSend()				while( (SPSR & 0x80)==0x00 )
+
+#define SPI0_SendByte(Data)				SPI0_TxData(Data);SPI0_WaitForSend()
+#define SPI0_RecvBute()					SPI0_RxData()
+
+// PB4(MISO), PB3(MOSI), PB5(SCK), PB2(/SS)         // CS=1, waiting for SPI start // SPI mode 0, 4MHz
+#define SPI0_Init()						DDRB  |= SPI0_SS_BIT|SPI0_SCLK_BIT|SPI0_MOSI_BIT;\
+										PORTB = SPI0_SS_BIT;\
+										SPCR  = 0x50  
+//-----------------------------------------------------------------------------
+
+//-----------------------------------------------------------------------------
+//IInChip SPI HAL
+#define IINCHIP_SpiInit					SPI0_Init
+#define IINCHIP_SpiSendData				SPI0_SendByte	
+#define IINCHIP_SpiRecvData				SPI0_RxData
+
+
+#define IINCHIP_CS_BIT					BIT2
+#define IINCHIP_CS_DDR					DDRB
+#define IINCHIP_CS_PORT					PORTB
+
+#define IINCHIP_CSInit()					(IINCHIP_CS_DDR |= IINCHIP_CS_BIT)
+#define IINCHIP_CSon()					(IINCHIP_CS_PORT |= IINCHIP_CS_BIT)
+#define IINCHIP_CSoff()					(IINCHIP_CS_PORT &= ~IINCHIP_CS_BIT)
+//-----------------------------------------------------------------------------
-- 
cgit v1.2.3-18-g5258