MPC8309 USB OTG功能调试

MPC8309 USB OTG功能调试

 电路图：

 

调试时使用的是mpc8309twr freescale官方开发板。

DTS配置

                   usb@23000{

                            compatible= "fsl-usb2-dr";

                            reg= <0x23000 0x1000>;

                            #address-cells= <1>;

                            #size-cells= <0>;

                            interrupt-parent= <&ipic>;

                            interrupts= <38 0x8>;

                            dr_mode= "otg"; //+ 20160812

                            phy_type= "ulpi";

                   };

 

内核配置：

[*] USB support  --->   

<*>  EHCI HCD (USB 2.0) support

[*]    Support for Freescale on-chip EHCI USB controller

<*>  USB Mass Storage support

<*>  USB Gadget Support  --->

*** OTG and related infrastructure ***

 

启动后，D1亮起表明USB3300已经开始工作。插入U盘，串口打印出：

[root@mpc8309twr root]# usb 1-1: new highspeed USB device using fsl-ehci and address 2

scsi0 : usb-storage 1-1:1.0

scsi 0:0:0:0: Direct-Access     Kingston DataTraveIer G3  PMAP PQ: 0 ANSI: 0 CCS

sd 0:0:0:0: Attached scsi generic sg0 type0

usb 1-1: reset high speed USB device usingfsl-ehci and address 2

sd 0:0:0:0: [sda] 7827456 512-byte logicalblocks: (4.00 GB/3.73 GiB)

sd 0:0:0:0: [sda] Write Protect is off

sd 0:0:0:0: [sda] Assuming drive cache:write through

sd 0:0:0:0: [sda] Assuming drive cache:write through

 sda:sda1

sd 0:0:0:0: [sda] Assuming drive cache:write through

sd 0:0:0:0: [sda] Attached SCSI removabledisk

表明USB口已经识别到了U盘的型号和容量。使用fdisk命令查询挂载信息。

[root@mpc8309twr root]# fdisk -l

 

Disk /dev/sda: 4007 MB, 4007657472 bytes

61 heads, 21 sectors/track, 6110 cylinders

Units = cylinders of 1281 * 512 = 655872bytes

 

  Device Boot      Start         End      Blocks Id System

/dev/sda1  *         812        6111    3393664   b Win95 FAT32

 

使用mount命令挂载U盘：

[root@mpc8309twr root]# mount -t vfat/dev/sda1 /mnt/usbflash/

[root@mpc8309twr root]# cd /mnt/usbflash/

[root@mpc8309twr usbflash]# ls

这样就可以看到U盘中的文件。