TF-Card

1 TF Card Interface Introduction

The TF card (TransFlash Card), also known as a MicroSD card, is a small flash memory card widely used in mobile devices (such as phones, tablets, cameras, drones, etc.) and embedded devices (such as development boards, single-board computers, etc.). With its compact size, large storage capacity, and high cost-effectiveness, the TF card has become one of the most commonly used storage media in portable devices.

TF card illustration:

TF

The development board has one TF card slot that supports TF card hot-plug.

TF_2

2 Mounting the TF Card

If a TF card is inserted, you can mount it with the following steps:

  1. View the device node:
root@linaro-alip:/# fdisk -l
···
Disk /dev/mmcblk1: 29.72 GiB, 31914983424 bytes, 62333952 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 23000000-0000-4C4A-8000-699000005ABB
  1. Create a mount point and mount the device:
mkdir /mnt/TF_Card
mount /dev/sda1 /mnt/TF_Card
  1. View mount results:
root@linaro-alip:/# df -h
Filesystem      Size  Used Avail Use% Mounted on
...
/dev/mmcblk1     30G  2.1G   28G   7% /mnt/TF_Card
  1. View the TF card storage contents
root@linaro-alip:/# ls -l mnt/TF_Card/
total 2154976
-rwxr-xr-x 1 root root          0 Oct 29 13:29  BOOT
-rwxr-xr-x 1 root root   25777653 Oct 29 13:29  boot.1-of-2.gz
-rwxr-xr-x 1 root root      30566 Oct 29 13:29  boot.2-of-2.gz
-rwxr-xr-x 1 root root        830 Oct 29 13:29  boot.cmd
-rwxr-xr-x 1 root root       1290 Oct 29 13:29  boot_emmc-boot.cmd
-rwxr-xr-x 1 root root       1362 Oct 29 13:29  boot_emmc-boot.scr
-rwxr-xr-x 1 root root       1463 Oct 29 13:29  boot_emmc.cmd
-rwxr-xr-x 1 root root       1315 Oct 29 13:29  boot_emmc-data.cmd
  1. Unmount the device:
umount /mnt/TF_Card