SD卡烧录说明

1、使用前准备

1.按照编译环境搭建生成烧录挡案
2.FAT32格式的Micro SD卡

# Ubuntu下格式化SD卡为Fat32格式操作
1.df -h 			#查看设备号
2.umount /dev/sdb1	#取消挂载
3.sudo mkdosfs /dev/sdb1  	#格式化成Fat32格式
4.sudo fdisk -l						#查看格式化结果

2、操作过程

文件位置

1.将烧录档案（如下）放到SD卡中。
.
├── boot.emmc
├── cfg.emmc
├── fip.bin
├── fw_payload_uboot.bin
├── rootfs.emmc
└── system.emmc

2.将SD卡插入的SD卡槽中。
3.将平台重开机。

3、操作实例

3.1, 将开发板上通过串口转TTL板与电脑连接

注意板端的RX脚接 usb-ttl 的TX脚，板端TX脚接 usb-ttl 的RX脚

3.2, 使用mobaxterm配置串口终端

一切顺利的话终端显示

[root@cvitek]~#

1. 插卡上电开机后，会自动进入升级，升级完成后，如下所示会停留在uboot:


Hit any key to stop autoboot:  0
## Resetting to default environment
Start SD downloading...
mmc1 : finished tuning, code:60
465408 bytes read in 11 ms (40.3 MiB/s)
mmc0 : finished tuning, code:27
switch to partitions #1, OK
mmc0(part 1) is current device

MMC write: dev # 0, block # 0, count 2048 ... 2048 blocks written: OK in 17 ms (58.8 MiB/s)

MMC write: dev # 0, block # 2048, count 2048 ... 2048 blocks written: OK in 14 ms (71.4 MiB/s)
Program fip.bin done
mmc0 : finished tuning, code:74
switch to partitions #0, OK
mmc0(part 0) is current device
64 bytes read in 3 ms (20.5 KiB/s)
Header Version:1
2755700 bytes read in 40 ms (65.7 MiB/s)

MMC write: dev # 0, block # 0, count 5383 ... 5383 blocks written: OK in 64 ms (41.1 MiB/s)
64 bytes read in 4 ms (15.6 KiB/s)
Header Version:1
13224 bytes read in 4 ms (3.2 MiB/s)

MMC write: dev # 0, block # 5760, count 26 ... 26 blocks written: OK in 2 ms (6.3 MiB/s)
64 bytes read in 4 ms (15.6 KiB/s)
Header Version:1
11059264 bytes read in 137 ms (77 MiB/s)

MMC write: dev # 0, block # 17664, count 21600 ... 21600 blocks written: OK in 253 ms (41.7 MiB/s)
64 bytes read in 3 ms (20.5 KiB/s)
Header Version:1
4919360 bytes read in 65 ms (72.2 MiB/s)

MMC write: dev # 0, block # 158976, count 9608 ... 9608 blocks written: OK in 110 ms (42.6 MiB/s)
64 bytes read in 4 ms (15.6 KiB/s)
Header Version:1
10203200 bytes read in 128 ms (76 MiB/s)

MMC write: dev # 0, block # 240896, count 19928 ... 19928 blocks written: OK in 228 ms (42.7 MiB/s)
Saving Environment to MMC... Writing to MMC(0)... OK
mars_c906#

拔掉SD卡，输入re重启进入系统