ESP32-S3 communicating with a Ltd FT2232C/D/H Dual UART/FIFO IC via USB-OTG

[philipp_u]

Hi, im trying to get a serial connection going from the esp to this device https://www.me-systeme.de/shop/en/elect ... t/gsv-3usb. I managed to get a connection but im not sure where to go from there. After connecting with

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cdc_acm_host_open_vendor_specific

i get the following device information:

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*** Device descriptor ***
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0x0
bDeviceSubClass 0x0
bDeviceProtocol 0x0
bMaxPacketSize0 8
idVendor 0x403
idProduct 0x6010
bcdDevice 5.00
iManufacturer 1
iProduct 2
iSerialNumber 3
bNumConfigurations 1
*** Configuration descriptor ***
bLength 9
bDescriptorType 2
wTotalLength 55
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
bMaxPower 500mA
        *** Interface descriptor ***
        bLength 9
        bDescriptorType 4
        bInterfaceNumber 0
        bAlternateSetting 0
        bNumEndpoints 2
        bInterfaceClass 0xff
        iInterface 2
                *** Endpoint descriptor ***
                bLength 7
                bDescriptorType 5
                bEndpointAddress 0x81   EP 1 IN
                bmAttributes 0x2        BULK
                wMaxPacketSize 64
                bInterval 0
                *** Endpoint descriptor ***
                bLength 7
                bDescriptorType 5
                bEndpointAddress 0x2    EP 2 OUT
                bmAttributes 0x2        BULK
                wMaxPacketSize 64
                bInterval 0
        *** Interface descriptor ***
        bLength 9
        bDescriptorType 4
        bInterfaceNumber 1
        bAlternateSetting 0
        bNumEndpoints 2
        bInterfaceClass 0xff
        iInterface 2
                *** Endpoint descriptor ***
                bLength 7
                bDescriptorType 5
                bEndpointAddress 0x83   EP 3 IN
                bmAttributes 0x2        BULK
                wMaxPacketSize 64
                bInterval 0
                *** Endpoint descriptor ***
                bLength 7
                bDescriptorType 5
                bEndpointAddress 0x4    EP 4 OUT
                bmAttributes 0x2        BULK
                wMaxPacketSize 64
                bInterval 0

both

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cdc_acm_host_line_coding_get
cdc_acm_host_line_coding_set

fail so i guess thats not supported.
How can i get a serial connection with 38400 baud and 8n1? Am i even on the right track with CDC?
Full code: https://gist.github.com/qdlmcfresh/03e5 ... 0c3a5a41c3
The data im getting in the handle_rx callback looks like this:

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I (24166) USB-CDC: Data received
I (24176) USB-CDC: 0x3fc9559c   01 60 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |.`..............|
I (24186) USB-CDC: 0x3fc955ac   00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
I (24186) USB-CDC: 0x3fc955bc   00 00 00 00 00 00 00 00  00                       |.........|
I (24196) USB-CDC: Data received
I (24206) USB-CDC: 0x3fc9559c   01 60                                             |.`|
I (24216) USB-CDC: Data received
I (24216) USB-CDC: 0x3fc9559c   01 60                                             |.`|
I (24226) USB-CDC: Data received
I (24226) USB-CDC: 0x3fc9559c   01 60                                             |.`|
I (24236) USB-CDC: Data received
I (24246) USB-CDC: 0x3fc9559c   01 60                                             |.`|
I (24246) USB-CDC: Data received
I (24256) USB-CDC: 0x3fc9559c   01 60 00                                          |.`.|

while a working connection should put out something like this:

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+00.000 mV/V
+00.000 mV/V
+00.000 mV/V
+00.000 mV/V
+00.000 mV/V
+00.000 mV/V
+00.000 mV/V
+00.000 mV/V

[philipp_u]

https://github.com/espressif/esp-idf/tr ... dc_acm_vcp
this is the answer to all my problems