Actions
Feature #5466
openCP2102N evaluation for burst_ind baudrate
Start date:
02/22/2022
Due date:
% Done:
0%
Resolution:
Spec Reference:
Description
CP2102N EVB has arrived:
Bus 001 Device 022: ID 10c4:ea60 Silicon Labs CP210x UART Bridge
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x10c4 Silicon Labs
idProduct 0xea60 CP210x UART Bridge
bcdDevice 1.00
iManufacturer 1 Silicon Labs
iProduct 2 CP2102N USB to UART Bridge Controller
iSerial 3 48022d00e29feb11989dd1acdf749906
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0020
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Updated by laforge about 2 years ago
USB descriptor differences from CP2102 to CP2102N:
--- /space/home/laforge/cp2102.lsusb 2022-02-22 14:12:56.015120884 +0100
+++ /space/home/laforge/cp2102n.lsusb 2022-02-22 14:11:57.838755866 +0100
@@ -1,9 +1,9 @@
-Bus 001 Device 023: ID 10c4:ea60 Silicon Labs CP210x UART Bridge
+Bus 001 Device 022: ID 10c4:ea60 Silicon Labs CP210x UART Bridge
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
- bcdUSB 1.10
+ bcdUSB 2.00
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
@@ -12,8 +12,8 @@
idProduct 0xea60 CP210x UART Bridge
bcdDevice 1.00
iManufacturer 1 Silicon Labs
- iProduct 2 CP2102 USB to UART Bridge Controller
- iSerial 3 0001
+ iProduct 2 CP2102N USB to UART Bridge Controller
+ iSerial 3 48022d00e29feb11989dd1acdf749906
bNumConfigurations 1
Configuration Descriptor:
bLength 9
@@ -34,11 +34,11 @@
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
- iInterface 2
+ iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
- bEndpointAddress 0x81 EP 1 IN
+ bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
@@ -48,7 +48,7 @@
Endpoint Descriptor:
bLength 7
bDescriptorType 5
- bEndpointAddress 0x01 EP 1 OUT
+ bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Updated by laforge about 2 years ago
- Tracker changed from Bug to Feature
$ sudo ./cp210x-program [Errno 32] Pipe error
it's not yet clear if this is simply because the CP2102N has changed the endpoint order / numbers, or if it is some kind of other incompatibility.
[pid 487724] openat(AT_FDCWD, "/dev/bus/usb/001/039", O_RDWR|O_CLOEXEC) = 7
[pid 487724] ioctl(7, USBDEVFS_GET_CAPABILITIES, 0x2995b2c) = 0
[pid 487724] ioctl(7, USBDEVFS_GETDRIVER, 0x7ffef6e41570) = 0
[pid 487724] openat(AT_FDCWD, "/sys/bus/usb/devices/1-2/bConfigurationValue", O_RDONLY|O_CLOEXEC) = 8
[pid 487724] read(8, "1\n", 19) = 2
[pid 487724] close(8) = 0
[pid 487724] ioctl(7, USBDEVFS_GETDRIVER, 0x7ffef6e41560) = 0
[pid 487724] ioctl(7, USBDEVFS_IOCTL, 0x7ffef6e41550) = 0
[pid 487724] ioctl(7, USBDEVFS_SETCONFIGURATION, 0x7ffef6e4114c) = 0
[pid 487724] timerfd_settime(4, TFD_TIMER_ABSTIME, {it_interval={tv_sec=0, tv_nsec=0}, it_value={tv_sec=501447, tv_nsec=388954989}}, NULL) = 0
[pid 487724] ioctl(7, USBDEVFS_SUBMITURB, 0x2966ba0) = 0
[pid 487724] poll([{fd=3, events=POLLIN}, {fd=4, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 2 ([{fd=3, revents=POLLIN}, {fd=7, revents=POLLOUT}])
[pid 487724] read(3, "\1\0\0\0\0\0\0\0", 8) = 8
[pid 487724] ioctl(7, USBDEVFS_REAPURBNDELAY, 0x7ffef6e40cc0) = 0
[pid 487724] timerfd_settime(4, 0, {it_interval={tv_sec=0, tv_nsec=0}, it_value={tv_sec=0, tv_nsec=0}}, NULL) = 0
[pid 487724] ioctl(7, USBDEVFS_REAPURBNDELAY, 0x7ffef6e40cc0) = -1 EAGAIN (Resource temporarily unavailable)
[pid 487724] write(2, "[Errno 32] Pipe error\n", 22[Errno 32] Pipe error
) = 22
Updated by laforge about 2 years ago
laforge wrote in #note-2:
it's not yet clear if this is simply because the CP2102N has changed the endpoint order / numbers, or if it is some kind of other incompatibility.
cp210x-program uses control endpoint transfers, so it seems that those have somehow changed between CP2102 and CP2102N.
Actions
