tci6614 evm NAND flash 及6614 外设

1. 你可以把.out文件压缩一下，放到文件系统中，再写到NAND flash中。

2. I2C, GPIO, UART都是基本的外设，网上有很多资料可以参靠。Linux kernel的源码的文档应该都有将如何使用。

 Documentation/devicetree/gpio/gpio-keystone.txt

 Documentation/devicetree/bindings/i2c/davinci.txt

 Documentation/devicetree/bindings/spi/spi-davinci.txt

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include <sys/ioctl.h>

#include <linux/i2c.h>
#include <linux/i2c-dev.h>
#include <asm/arch-davinci/i2c.h>

int i2c_fd; // I2C file descriptor

if ((i2c_fd = open("/dev/i2c/0",O_RDWR)) < 0)
    {
        // ERROR HANDLING; you can check errno to see what went wrong 
    }

// Example of I2C write for Philips I2C protocol

UInt8 output[uNBytes+1]; // store REG Address + uNBytes of data

output[0] = (UInt8) uIndex;    // register address

if (ioctl(i2c_fd,I2C_SLAVE,uHwAddress) < 0)
    {
        // ERROR HANDLING; you can check errno to see what went wrong
    }

do
    {    
        ret = write(i2c_fd, output, uNBytes+1);
    } while (ret != (uNBytes+1) && retry-- > 0);
    
      if (retry == -1)
      {
          fprintf(stderr,"I2C write error\n"); fflush(stderr);
        return 0;
      }