Support CY6C65215 and CY6C65215A

[runger1101001]

Support the dual channel devices. This is still a WIP.

This PR is to discuss the necessary changes to the scb_context, which are quite extensive.

Discussion on this topic also in PR #2

[multiplemonomials]

I would like to handle this case a little bit better in this function. I think what would make sense would be to add two DiscoveredDevice entries to the output when we see a dual channel device. Either that, or make DiscoveredDevice able to hold two different channels from one device.

[multiplemonomials]

I tried running cy_serial_cli scan with your branch, and I got:

╭─────────────────────────────── Traceback (most recent call last) ────────────────────────────────╮
│ /home/jamie/Mbed/cy_serial_bridge/src/cy_serial_bridge/cli.py:331 in scan                        │
│                                                                                                  │
│   328 │   Scan for candidate USB devices on the system                                           │
│   329 │   """                                                                                    │
│   330 │   scan_filter = None if scan_all else {(global_opt.vid, global_opt.pid)}                 │
│ ❱ 331 │   devices = context.list_devices(scan_filter)                                            │
│   332 │                                                                                          │
│   333 │   if len(devices) == 0:                                                                  │
│   334 │   │   if scan_all:                                                                       │
│                                                                                                  │
│ ╭─────────── locals ────────────╮                                                                │
│ │    scan_all = False           │                                                                │
│ │ scan_filter = {(1204, 57360)} │                                                                │
│ ╰───────────────────────────────╯                                                                │
│                                                                                                  │
│ /home/jamie/Mbed/cy_serial_bridge/src/cy_serial_bridge/cy_scb_context.py:206 in list_devices     │
│                                                                                                  │
│   203 │   │   │   │   │   │   │   scb_interface_settings = cfg[i][0]                             │
│   204 │   │   │   │   │   │   │   curr_cytype = CyType.UART_VENDOR                               │
│   205 │   │   │                                                                                  │
│ ❱ 206 │   │   │   if curr_cytype is None or mfg_interface_settings is None \                     │
│   207 │   │   │   │   or (scb_interface_settings is None and usb_cdc_interface_settings is Non   │
│   208 │   │   │   │   # TODO verbose output                                                      │
│   209 │   │   │   │   continue                                                                   │
│                                                                                                  │
│ ╭─────────────────────────────────────────── locals ───────────────────────────────────────────╮ │
│ │ cdc_data_interface_settings = None                                                           │ │
│ │                         cfg = <usb1.USBConfiguration object at 0x7d84d0df81a0>               │ │
│ │                         dev = <usb1.USBDevice object at 0x7d84d054c110>                      │ │
│ │                 device_list = []                                                             │ │
│ │                even_vid_pid = (1204, 57360)                                                  │ │
│ │                           i = 1                                                              │ │
│ │      mfg_interface_settings = <usb1.USBInterfaceSetting object at 0x7d84d054c290>            │ │
│ │                 odd_vid_pid = (1204, 57361)                                                  │ │
│ │      scb_interface_settings = None                                                           │ │
│ │                        self = <cy_serial_bridge.cy_scb_context.CyScbContext object at        │ │
│ │                               0x7d84d05018b0>                                                │ │
│ │                        type = <CyType.MFG: 5>                                                │ │
│ │  usb_cdc_interface_settings = None                                                           │ │
│ │                    vid_pids = {(1204, 57360)}                                                │ │
│ ╰──────────────────────────────────────────────────────────────────────────────────────────────╯ │
╰──────────────────────────────────────────────────────────────────────────────────────────────────╯
UnboundLocalError: cannot access local variable 'curr_cytype' where it is not associated with a value

[runger1101001]

Hmmm - I'll look into this. I have worked on it in the last few days, and it's working on my side. But I have more changes I've done, so probably I've fixed this issue already.