Important changes to forums and questions
All forums and questions are now archived. To start a new conversation or read the latest updates go to forums.mbed.com.
11 years, 1 month ago. This question has been closed. Reason: Question solved. The user must install the serial driver provided by mbed.
I CAN NOT find CMSIS-DAP debugger from USB devices
After connecting my brand new LPC812MAX to Windows XP SP3. The OS prompts "MBED CMSIS-DAP" is found. However it has only a MSD, no CMSIS-DAP interface as well as VCP.
I am expecting to find CMSIS-DAP (HID?) , MSD and CDC from USB devices. So far I can only find one to download my binary file. The board firmware has only programmer without VCP and debugger interfaces? I have downloaded the latest firmware to it, there is no improvements at all.
Please tell me how to find it. I know mbed compiler is good. But sometimes I expect to use Keil/IAR/official GCC-ARM as well as CodeRed.
Yours sincerely
Allan K Liu
UPDATES:
By using microsoft USBview tool. I found its USB description. Yes, it includes CMSIS-DAP, but I have no idea there is no driver installation procedures besides MSD.
MS USBVIEW log
Device Descriptor: bcdUSB: 0x0110 bDeviceClass: 0x02 bDeviceSubClass: 0x00 bDeviceProtocol: 0x00 bMaxPacketSize0: 0x08 (8) idVendor: 0x0D28 idProduct: 0x0204 bcdDevice: 0x0100 iManufacturer: 0x01 0x0409: "MBED" iProduct: 0x02 0x0409: "MBED CMSIS-DAP" iSerialNumber: 0x03 0x0409: "03000200E62EC2A14055EFAE" bNumConfigurations: 0x01 ConnectionStatus: DeviceConnected Current Config Value: 0x01 Device Bus Speed: Full Device Address: 0x01 Open Pipes: 2 Endpoint Descriptor: bEndpointAddress: 0x82 Transfer Type: Bulk wMaxPacketSize: 0x0040 (64) bInterval: 0x00 Endpoint Descriptor: bEndpointAddress: 0x02 Transfer Type: Bulk wMaxPacketSize: 0x0040 (64) bInterval: 0x00 Configuration Descriptor: wTotalLength: 0x007A bNumInterfaces: 0x04 bConfigurationValue: 0x01 iConfiguration: 0x00 bmAttributes: 0x80 (Bus Powered ) MaxPower: 0xFA (500 Ma) Interface Descriptor: bInterfaceNumber: 0x00 bAlternateSetting: 0x00 bNumEndpoints: 0x02 bInterfaceClass: 0x08 bInterfaceSubClass: 0x06 bInterfaceProtocol: 0x50 iInterface: 0x07 0x0409: "USB_MSC" Endpoint Descriptor: bEndpointAddress: 0x82 Transfer Type: Bulk wMaxPacketSize: 0x0040 (64) bInterval: 0x00 Endpoint Descriptor: bEndpointAddress: 0x02 Transfer Type: Bulk wMaxPacketSize: 0x0040 (64) bInterval: 0x00 Interface Descriptor: bInterfaceNumber: 0x01 bAlternateSetting: 0x00 bNumEndpoints: 0x01 bInterfaceClass: 0x02 bInterfaceSubClass: 0x02 bInterfaceProtocol: 0x01 iInterface: 0x00 Unknown Descriptor: bDescriptorType: 0x24 bLength: 0x05 05 24 00 10 01 Unknown Descriptor: bDescriptorType: 0x24 bLength: 0x05 05 24 01 03 02 Unknown Descriptor: bDescriptorType: 0x24 bLength: 0x04 04 24 02 06 Unknown Descriptor: bDescriptorType: 0x24 bLength: 0x05 05 24 06 01 02 Endpoint Descriptor: bEndpointAddress: 0x83 Transfer Type: Interrupt wMaxPacketSize: 0x0010 (16) bInterval: 0x02 Interface Descriptor: bInterfaceNumber: 0x02 bAlternateSetting: 0x00 bNumEndpoints: 0x02 bInterfaceClass: 0x0A bInterfaceSubClass: 0x00 bInterfaceProtocol: 0x00 iInterface: 0x00 Endpoint Descriptor: bEndpointAddress: 0x04 Transfer Type: Bulk wMaxPacketSize: 0x0040 (64) bInterval: 0x00 Endpoint Descriptor: bEndpointAddress: 0x84 Transfer Type: Bulk wMaxPacketSize: 0x0040 (64) bInterval: 0x00 Interface Descriptor: bInterfaceNumber: 0x03 bAlternateSetting: 0x00 bNumEndpoints: 0x02 bInterfaceClass: 0x03 (HID) bInterfaceSubClass: 0x00 bInterfaceProtocol: 0x00 iInterface: 0x06 0x0409: "MBED CMSIS-DAP" HID Descriptor: bcdHID: 0x0100 bCountryCode: 0x00 bNumDescriptors: 0x01 bDescriptorType: 0x22 wDescriptorLength: 0x0021 Endpoint Descriptor: bEndpointAddress: 0x81 Transfer Type: Interrupt wMaxPacketSize: 0x0040 (64) bInterval: 0x01 Endpoint Descriptor: bEndpointAddress: 0x01 Transfer Type: Interrupt wMaxPacketSize: 0x0040 (64) bInterval: 0x01
Draft Conclusion
It has 4 interfaces:
summary
bInterfaceNumber/bNumEndpoints/bInterfaceClass/bInterfaceSubClass/bInterfaceProtocol/"descrpitor"
0x00: 0x02/0x08/0x06/0x50/"USB MSC"
0x01: 0x01/0x02/0x02/0x01/"Unknown", interrupt x 1, maybe for VCP setup?
0x02: 0x02/0x0A/0x00/0x00/"", Bulk x 2, maybe for VCP?
0x03: 0x02/0x03/0x00/0x00/"MBED CMSIS-DAP", HID interrupt x 2for CMSIS-DAP debugger
It seems the designer wants to support MSC(MSD), VCP (bulkx2+interrupt) as well as HID for CMSIS-DAP debugger. But the wrong setup for USB descriptor blocks its installation in Windows XP.
Maybe we need more revisions for firmware of LPC11U35. After shipments to W/W customers for LPC812MAX, I believe you will receive similar questions very soon.
Before that, we can only download and go on LPC812MAX.
BTW, what is your preferences OS? Windows XP/7/8 or Linux / MAC?
Question relating to:
2 Answers
11 years, 1 month ago.
Have you updated latest firmaware to your unit?
https://mbed.org/handbook/Firmware-LPC800-MAX Firmware changelog¶
rev 0200:
Initial release Added CMSIS-DAP support
Hi Eero,
I followed the instructions on that page. Download 0200 firmware.
First, I can not find any F/W version info from MBED.HTM. Neither from htm page content nor from its forwards URL page. There is no JS inside that page, so it should be somewhere in the firmware.
Second, I also copied back firmware.bin from on board firmware MSD, compare with downloaded 0200 version. There are some slightly differences between them. I can tell they are minor changes.
Third, even after programming latest version to CSP DISABLED disk, the result is same. OS can find "MBED CMSIS-DAP", but neither VCP nor CMSIS-DAP debugger is listed in device manager.
I also downloaded VCP driver for mbed microcontroller. Anyway it is dedicated for VCP, not for CMSIS-DAP debugger.
Any ideas?
posted by 15 Oct 2013You wrote: "But sometimes I expect to use Keil/"
http://www.keil.com/support/man/docs/dapdebug/dapdebug_introduction.htm
You need to use kiel to debug. Windows does do anything MSIS-DAP so maybe thats why it is not seen in device manager.
posted by 15 Oct 2013
11 years, 1 month ago.
I was quite confused about LPC812MAX. It seems an co-design from NXP (silicon), Embedded Artists (H/W), and your company mbed.org (all software, firmware and online tools).
The original IDE supplier for LPCXpresso CodeRed is part of NXP. However this product (LPC812MAX) seems hardly mentioned CodeRed Eclipse based IDE. Furthermore, NXP sponsors it for its shipment, fabrication.
But its support front-end seems as mbed.
Dude, who is driving LPC812MAX?
It should be shipped with a complete user manual, get started, instead of forwarding me back and forth between different web pages to look for necessary answers.
You need to download and install the serial driver for the mbed interface. See:http://mbed.org/handbook/Windows-serial-configuration#1-download-the-mbed-windows-serial-port
posted by Bigarmer Freeman 15 Oct 2013Finally, it works. The mbed-windows-serial-port is actually the combo drivers for all USB EPs, including MSD/HID/VCP. Thanks for your information. Now I can list all of them in WIndows.
posted by Kai Liu 15 Oct 2013