ESP8266 Memory Map

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== 编译布局 ==
 
== 编译布局 ==
 
<pre>
 
<pre>
−
  #include <stdio.h>
+
#include <stdio.h>
−
    #include <fcntl.h>       /* File Control Definitions          */
+
#include <stdlib.h>
−
    #include <termios.h>     /* POSIX Terminal Control Definitions */
+
#include <ftdi.h>
−
    #include <unistd.h>      /* UNIX Standard Definitions          */
+
int main(void)
−
    #include <errno.h>      /* ERROR Number Definitions          */
+
−
    #include <sys/ioctl.h>  /* ioctl()                            */
+
−
 
+
−
    main(void)
+
−
    {
+
−
        int fd;    /*File Descriptor*/
+
−
        int status;
+
−
 
+
−
        fd = open("/dev/ttyUSB0",O_RDWR | O_NOCTTY ); //Opening the serial port
+
−
 
+
−
        ioctl(fd,TIOCMGET,&status); /* GET the State of MODEM bits in Status */
+
−
        status |= TIOCM_RTS;        // Set the RTS pin
+
−
        ioctl(fd, TIOCMSET, status);
+
−
 
+
−
        getchar(); //To view the change in status pins before closing the port
+
−
 
+
−
        close(fd);
+
−
    }
+
−
 
+
−
int disableRTS ()
+
 
{
 
{
−
     char fd, ret, flags;
+
     int ret;
−
 
+
    struct ftdi_context *ftdi;
−
     // open device
+
    struct ftdi_version_info version;
−
     if ((fd = open("/dev/cu.mydevice", O_RDWR | O_NDELAY)) < 0)
+
    if ((ftdi = ftdi_new()) == 0)
 +
  {
 +
        fprintf(stderr, "ftdi_new failed\n");
 +
        return EXIT_FAILURE;
 +
     }
 +
    version = ftdi_get_library_version();
 +
    printf("Initialized libftdi %s (major: %d, minor: %d, micro: %d, snapshot ver: %s)\n",
 +
        version.version_str, version.major, version.minor, version.micro,
 +
        version.snapshot_str);
 +
     if ((ret = ftdi_usb_open(ftdi, 0x0403, 0x6001)) < 0)
 +
    {
 +
        fprintf(stderr, "unable to open ftdi device: %d (%s)\n", ret, ftdi_get_error_string(ftdi));
 +
        ftdi_free(ftdi);
 +
        return EXIT_FAILURE;
 +
    }
 +
    // Read out FTDIChip-ID of R type chips
 +
    if (ftdi->type == TYPE_R)
 +
    {
 +
        unsigned int chipid;
 +
        printf("ftdi_read_chipid: %d\n", ftdi_read_chipid(ftdi, &chipid));
 +
        printf("FTDI chipid: %X\n", chipid);
 +
    }
 +
    if ((ret = ftdi_usb_close(ftdi)) < 0)
 
     {
 
     {
−
         fprintf(stderr, "failed to open device");
+
         fprintf(stderr, "unable to close ftdi device: %d (%s)\n", ret, ftdi_get_error_string(ftdi));
−
         return -1;
+
        ftdi_free(ftdi);
 +
         return EXIT_FAILURE;
 
     }
 
     }
−
 
+
     ftdi_free(ftdi);
−
     // Get the current state of the bits
+
     return EXIT_SUCCESS;
−
    ioctl(fd, TIOCMGET, &flags);
+
−
    fprintf(stderr, "Flags are %x.\n", flags);   
+
−
 
+
−
    flags &= ~TIOCM_RTS;  // Disable the RTS bit
+
−
    ret = ioctl(fd, TIOCMSET, &flags);
+
−
 
+
−
    if (ret == -1)
+
−
        fprintf(stderr, "TIOCMSET failed\n");
+
−
    else
+
−
        fprintf(stderr, "TIOCMSET succeeded. flags: %x.\n", flags);
+
−
 
+
−
     return 0;
+
 
}
 
}
 
</pre>
 
</pre>

2015年12月7日 (一) 22:27的版本

1 编译布局 

#include <stdio.h>
#include <stdlib.h>
#include <ftdi.h>
int main(void)
{
    int ret;
    struct ftdi_context *ftdi;
    struct ftdi_version_info version;
    if ((ftdi = ftdi_new()) == 0)
   {
        fprintf(stderr, "ftdi_new failed\n");
        return EXIT_FAILURE;
    }
    version = ftdi_get_library_version();
    printf("Initialized libftdi %s (major: %d, minor: %d, micro: %d, snapshot ver: %s)\n",
        version.version_str, version.major, version.minor, version.micro,
        version.snapshot_str);
    if ((ret = ftdi_usb_open(ftdi, 0x0403, 0x6001)) < 0)
    {
        fprintf(stderr, "unable to open ftdi device: %d (%s)\n", ret, ftdi_get_error_string(ftdi));
        ftdi_free(ftdi);
        return EXIT_FAILURE;
    }
    // Read out FTDIChip-ID of R type chips
    if (ftdi->type == TYPE_R)
    {
        unsigned int chipid;
        printf("ftdi_read_chipid: %d\n", ftdi_read_chipid(ftdi, &chipid));
        printf("FTDI chipid: %X\n", chipid);
    }
    if ((ret = ftdi_usb_close(ftdi)) < 0)
    {
        fprintf(stderr, "unable to close ftdi device: %d (%s)\n", ret, ftdi_get_error_string(ftdi));
        ftdi_free(ftdi);
        return EXIT_FAILURE;
    }
    ftdi_free(ftdi);
    return EXIT_SUCCESS;
}



2 地址空间映射 

/* RAM */
#define RAM_BASE		0x3FFE8000
#define RAM_SIZE		0x00018000	// Size: 98304 bytes
#define RAM_BIOS_DATA_BASE 	0x3FFFC000      // ROM-XTOS system data RAM. Size: 16384 bytes

/* IRAM */
#define IRAM_BASE		0x40100000
#define IRAM_SIZE		0x00008000	// Size: 32768 bytes

/* FLASH */
#define FLASH_BASE		0x40200000
#define FLASH_MIN_SIZE         	0x00080000	// 512 KB
#define FLASH_MAX_SIZE  	0x01000000      // 16 MB
#define FLASH_CACHE_MAX_SIZE	0x100000        // Size of Cached Flash

/* dport (io1) section */
#define DPORT_BASE		0x3ff00000

/* io2 section */
#define IO2_BASE		0x3ff20000	// Size: 6144 bytes

/* io3 section */
#define UART0_BASE		0x60000000
#define SPI1_BASE		0x60000100
#define SPI0_BASE		0x60000200
#define GPIO_BASE		0x60000300
#define HDRF_BASE		0x60000500
#define TIMER_BASE		0x60000600
#define RTC_BASE		0x60000700
#define IOMUX_BASE		0x60000800
#define WDT_BASE		0x60000900
#define SDIO_BASE		0x60000A00
#define SCL_BASE		0x60000B00
#define SAR_BASE		0x60000D00
#define I2S_BASE		0x60000E00
#define UART1_BASE		0x60000F00
#define RTC_RAM_BASE	        0x60001000	// Size: 1024 bytes
#define RTC_MEM_BASE	        0x60001100

/* io4 section */
#define IO4_BASE		0x60009800	// Size: 1536 bytes



















来自“http://wiki.jackslab.org/index.php?title=ESP8266_Memory_Map&oldid=5213”
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