#include "GlobalDefine.h"
#include "Error.h"
#include "Common.h"
#include "I2c.h"#include "ModManager.h"
#include "../Protocol/inc/I2cProtocol.h"#define INTPND (*(volatile unsigned long*)0x4a000010)
#define SRCPND (*(volatile unsigned long*)0x4a000000)
#define INTMSK (*(volatile unsigned long*)0x4a000008)
#define GPECON (*(volatile unsigned long*)0x56000040)
#define GPEUP  (*(volatile unsigned long*)0x56000048)#define IICCON    (*(volatile unsigned char*)0x54000000)
#define IICSTAT   (*(volatile unsigned char*)0x54000004)
#define IICDS     (*(volatile unsigned char*)0x5400000C)#define SLAVE_WRITE_ADDR 0xa0
#define SLAVE_READ_ADDR 0xa1static void I2cDelay(int i)
{int j = 0;while (i--)    {for (j = 0; j < 100; j++){    ;}  }
}static void I2cInit()
{//1 Interrupt InitializeINTPND |= (1 << 27);SRCPND |= (1 << 27);  INTMSK &= ~(1 << 27);IICCON |= (1 << 5); //2 Set I2C-Bus transmit clockIICCON &= ~(1 << 6);IICCON &= ~(0xf << 0);IICCON |= (0x5 << 0);//3. Set IIC-bus data output enableIICSTAT |= (1 << 4);//4. Set GPIO pin functionGPECON |= (0x2 << 28)|(0x2 << 30);GPEUP |= (0x3 << 14);//5. Set IIC-bus acknowledge enableIICCON |= (1 << 7);
}static void I2cWriteByte(unsigned char data, unsigned char addr)
{    //1. Set to Master-Transmit modeIICSTAT |= (3 << 6);//2. Write slave device addressIICDS = SLAVE_WRITE_ADDR;IICCON &= ~(1 << 4);//3. Write 0xF0 to IICSTAT.(Generate START signal) IICSTAT = 0xF0;// Wait Ackwhile ((IICCON & (1 << 4)) == 0 )I2cDelay(100);//4. Write address in chip to IICDSIICDS = addr;IICCON &= ~(1 << 4);// Wait Ackwhile ((IICCON & (1 << 4)) == 0 )I2cDelay(100);//5. Write data to IICDSIICDS = data;IICCON &= ~(1 << 4);   // Wait Ackwhile ((IICCON & (1 << 4)) == 0 )I2cDelay(100);//6. Write 0xD0 to IICSTAT(Generate STOP signal)IICSTAT = 0xD0;//7. Clear InterruptIICCON &= ~(1 << 4);    I2cDelay(100);
}static void I2cReadBytes(unsigned char addr, int length, unsigned char *buf)
{int j = 0;unsigned char unusedata;//1. Set to Master-Transmit modeIICSTAT |= (3 << 6);//2. Write slave device write addressIICDS = SLAVE_WRITE_ADDR;IICCON &= ~(1 << 4);//3. Write 0xF0 to IICSTATIICSTAT = 0xF0;//Wait ACKwhile ((IICCON & (1 << 4)) == 0 )I2cDelay(100);//4. Write address in the eepromIICDS = addr;IICCON &= ~(1 << 4);// Wait ACKwhile ((IICCON & (1 << 4)) == 0 )I2cDelay(100);//5. Set to Master-Receive modeIICSTAT &= ~(3 << 6);IICSTAT |= (2 << 6);//6. Write slave device read addressIICDS = SLAVE_READ_ADDR;IICCON &= ~(1 << 4);//7. Write 0xB0 to IICSTAT for starting to receiveIICSTAT = 0xb0;while ((IICCON & (1 << 4)) == 0 )I2cDelay(100);//8. Write address in chipIICDS = addr;IICCON &= ~(1 << 4);while((IICCON & (1 << 4)) == 0){I2cDelay(100);}for(j = 0; j < length; j++){if(j == (length - 1)){IICCON &= ~(1 << 7);         }buf[j] = IICDS;// Clear InterruptIICCON &= ~(1 << 4);// Wait for Interruptwhile ((IICCON & (1 << 4)) == 0 )I2cDelay(100);}//9. Write 0x90 to IICSTAT(Generate STOP signal)IICSTAT = 0x90;//10. Clear InterruptIICCON &= ~(1 << 4);
}I2cModeOps i2cModeOps = {.I2cInit = I2cInit,.I2cWriteByte = I2cWriteByte,.I2cReadBytes = I2cReadBytes,
};MODULE_INSTALL(I2c, MOD_I2C, 0, &i2cModeOps);