From 025a38a1f743fd9e89cbd477abe3f79a8d098097 Mon Sep 17 00:00:00 2001
From: Vegard Storheil Eriksen <zyp@jvnv.net>
Date: Sat, 19 Nov 2011 17:21:31 +0100
Subject: Moved os and hal related files into subdirectories.

---
 i2c.cpp | 194 ----------------------------------------------------------------
 1 file changed, 194 deletions(-)
 delete mode 100644 i2c.cpp

(limited to 'i2c.cpp')

diff --git a/i2c.cpp b/i2c.cpp
deleted file mode 100644
index cee72ec..0000000
--- a/i2c.cpp
+++ /dev/null
@@ -1,194 +0,0 @@
-#include "i2c.h"
-
-#include "stm32.h"
-#include "thread.h"
-
-I2C* I2C::self;
-
-template <>
-void interrupt<Interrupt::I2C1_EV>() {
-	I2C::self->irq_ev();
-}
-
-template <>
-void interrupt<Interrupt::I2C1_ER>() {
-	I2C::self->irq_er();
-}
-
-void I2C::irq_ev() {
-	uint32_t sr1 = I2C1.SR1;
-	I2C1.SR2;
-	
-	// EV5, SB = 1: Start condition sent.
-	if(sr1 & 0x01) {
-		// Send address.
-		I2C1.DR = (addr << 1) | (writing ? 0 : 1);
-	}
-	
-	// EV6, ADDR = 1: Address sent.
-	if(sr1 & 0x02) {
-		if(writing) {
-			I2C1.DR = *write_p++;
-			writing--;
-		} else {
-			if(reading > 1) {
-				I2C1.CR1 |= 0x400; // Set ACK.
-			} else {
-				I2C1.CR1 |= 0x200; // Set STOP.
-			}
-		}
-	}
-	
-	// EV7, RxNE = 1: Receive buffer not empty.
-	if(sr1 & 0x40) {
-		*read_p++ = I2C1.DR;
-		reading--;
-		
-		if(reading == 1) {
-			// Unset ACK, set STOP.
-			I2C1.CR1 = (I2C1.CR1 & ~0x400) | 0x200;
-		}
-		
-		if(reading == 0) {
-			busy = 0;
-		}
-	}
-	
-	//I2C1.CR1 &= ~0x400;
-	
-	// EV8, TxE = 1, BTF = 0: Transmit buffer empty, still writing.
-	if(sr1 & 0x80 && !(sr1 & 0x04)) {
-		if(writing) {
-			// Send data.
-			I2C1.DR = *write_p++;
-			writing--;
-		} else {
-			// All data sent.
-			
-			if(reading) {
-				// Send repeat start.
-				I2C1.CR1 |= 0x100;
-			} else {
-				// Send stop.
-				I2C1.CR1 |= 0x200;
-				busy = 0;
-			}
-		}
-	}
-}
-
-void I2C::irq_er() {
-	handle_error();
-}
-
-void I2C::handle_error() {
-	I2C1.SR1;
-	I2C1.SR2;
-	
-	//while(1);
-	I2C1.CR1 |= 0x200;
-	busy = 0;
-}
-
-void I2C::enable() {
-	RCC.enable(RCC.I2C1);
-	asm volatile("nop");
-	
-	I2C1.CR1 = 0x8000;
-	I2C1.CR1 = 0;
-	
-	I2C1.CR2 = 0x700 | 36;
-	I2C1.TRISE = 37;
-	I2C1.CCR = 180;
-	
-	Interrupt::enable(Interrupt::I2C1_EV);
-	Interrupt::enable(Interrupt::I2C1_ER);
-	
-	I2C1.CR1 = 1;
-}
-
-void I2C::write_reg(uint8_t addr_, uint8_t reg, uint8_t data) {
-	addr = addr_;
-	writing = 2;
-	reading = 0;
-	volatile uint8_t buf[] = {reg, data};
-	write_p = buf;
-	busy = 1;
-	
-	I2C1.CR1 |= 0x100;
-	
-	while(busy) {
-		Thread::yield();
-	}
-	
-	/*
-	while(!(I2C1.SR1 & 0x01)); // Wait for SB.
-	
-	I2C1.DR = (addr << 1) | 0;
-	while (!(I2C1.SR1 & 0x02)); // Wait for ADDR.
-	I2C1.SR2;
-	
-	I2C1.DR = reg;
-	while (!(I2C1.SR1 & 0x80)); // Wait for TxE.
-	
-	I2C1.DR = data;
-	while (!(I2C1.SR1 & 0x04)); // Wait for BTF.
-	
-	I2C1.CR1 |= 0x200;*/
-}
-
-void I2C::read_reg(uint8_t addr_, uint8_t reg, uint8_t len, uint8_t* buf) {
-	addr = addr_;
-	writing = 1;
-	reading = len;
-	write_p = &reg;
-	read_p = buf;
-	busy = 1;
-	
-	I2C1.CR1 |= 0x100;
-	
-	while(busy) {
-		Thread::yield();
-	}
-	
-	/*
-	I2C1.CR1 |= 0x100;
-	while(!(I2C1.SR1 & 0x01)); // Wait for SB.
-	
-	I2C1.DR = (addr << 1) | 0;
-	while (!(I2C1.SR1 & 0x02)); // Wait for ADDR.
-	I2C1.SR2;
-	
-	I2C1.DR = reg;
-	while (!(I2C1.SR1 & 0x80)); // Wait for TxE.
-	
-	I2C1.CR1 |= 0x100;
-	while(!(I2C1.SR1 & 0x01)); // Wait for SB.
-	
-	I2C1.DR = (addr << 1) | 1;
-	while (!(I2C1.SR1 & 0x02)); // Wait for ADDR.
-	I2C1.SR2;
-	
-	I2C1.CR1 |= 0x400; // Set ACK.
-	
-	while(len) {
-		if(len == 3) {
-			while (!(I2C1.SR1 & 0x04)); // Wait for BTF.
-			
-			I2C1.CR1 &= ~0x400; // Clear ACK.
-			*buf++ = I2C1.DR;
-			len--;
-			
-			I2C1.CR1 |= 0x200; // Set STOP.
-			*buf++ = I2C1.DR;
-			len--;
-			
-		} else {
-			while (!(I2C1.SR1 & 0x40)); // Wait for RxNE.
-			
-			*buf++ = I2C1.DR;
-			len--;
-		}
-	}
-	*/
-}
-- 
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