我使用 LPC1768 作为连接到运行 Linux 的 PXA168 的 CDC 设备。在 LPC 方面,我有驱动程序。我还为 usb-serial 和 cdc-acm 驱动器启用了 PXA linux 驱动程序。当我启动电路板时,我得到以下信息:-
[ 2.539060] usb 1-1.3: new full speed USB device using pxau2h-ehci and address 4
[ 2.581029] usb 1-1.3: New USB device found, idVendor=1fc9, idProduct=2002
[ 2.587908] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2.595241] usb 1-1.3: Product: NXP LPC17xx VCOM
[ 2.599996] usb 1-1.3: Manufacturer: NXP SEMICOND
[ 2.604786] usb 1-1.3: SerialNumber: DEMO00000000
# cat /proc/bus/usb/devices
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 1, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 2.06
S: Manufacturer=Linux 2.6.34 ehci_hcd
S: Product=Marvell PXA SOC EHCI Host Controller
S: SerialNumber=pxau2h-ehci
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=480 MxCh= 4
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=05e3 ProdID=0608 Rev=77.64
S: Product=USB2.0 Hub
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 1 Ivl=256ms
T: Bus=01 Lev=02 Prnt=02 Port=01 Cnt=01 Dev#= 3 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1908 ProdID=0221 Rev= 1.02
S: Manufacturer=Generic
S: Product=USB2.0 Device
S: SerialNumber=20090909180003
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
**T: Bus=01 Lev=02 Prnt=02 Port=02 Cnt=02 Dev#= 4 Spd=12 MxCh= 0
D: Ver= 2.00 Cls=02(comm.) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=1fc9 ProdID=2002 Rev= 1.00
S: Manufacturer=NXP SEMICOND
S: Product=NXP LPC17xx VCOM
S: SerialNumber=DEMO00000000
C:* #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=00 Driver=(none)
E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=2ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=(none)
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms**
现在我的 LPC 没有检测到任何驱动程序。此 LPC 在用于连接具有 Windows 的 PC 时工作正常,但如果我连接到 Linux PC,我也无法运行它。
任何人都可以帮助我了解linux的驱动程序以及将使用哪个接口来访问虚拟串口。