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Add picoprobe-only EXTRA_UART cmake option #103

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Add picoprobe-only EXTRA_UART cmake option #103

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Commits on Oct 2, 2023

  1. Add picoprobe-only EXTRA_UART cmake option bridging 2nd hardware UART… 

    … over USB-CDC as tty1

New CDC_UARTS count placed in CMakeLists.txt to ensure tusb_config.h and cdc_uart.c can see it.

CMakeLists.txt, picoprobe_config.h, board_pico_config.h, tusb_config.h,
main.c, cdc_uart.h, cdc_uart.c, usb_descriptors.c
Extra usb descriptor, interfaces and endpoints when needed. desc_ms_os_20 NOT updated.
cdc_task() gets new tty index param (extant UART always tty0).
was_connected and usb rx/tx buffers now module-static arrays with tty index.
All tud_cdc_* calls changed to tud_cdc_n_* variants, PICOPROBE_UART_RX/TX_LED remain tty0-only.
Basic testing: Pi4B host, THREADED 1, DAP_V2:
minicom receives uart output(s), openocd 'program xxx.elf verify reset exit' works.
    Your Name committed Oct 2, 2023
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