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Diffstat (limited to 'examples/device/printer_to_cdc/README.md')
| -rw-r--r-- | examples/device/printer_to_cdc/README.md | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/examples/device/printer_to_cdc/README.md b/examples/device/printer_to_cdc/README.md index ecb9a678f..efba70ffb 100644 --- a/examples/device/printer_to_cdc/README.md +++ b/examples/device/printer_to_cdc/README.md @@ -7,13 +7,26 @@ This example demonstrates a USB composite device with a Printer class interface This is useful for debugging printer class communication or as a reference for implementing printer class devices. -#### USB Interfaces +#### USB Descriptors | Interface | Class | Description | |-----------|-------|-------------| | 0 | CDC ACM | Virtual serial port | | 2 | Printer | USB Printer (bidirectional, protocol 2) | +#### Configuration + +Notable `tusb_config.h` settings: + +```c +#define CFG_TUD_CDC 1 +#define CFG_TUD_PRINTER 1 +#define CFG_TUD_CDC_RX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64) +#define CFG_TUD_CDC_TX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64) +#define CFG_TUD_PRINTER_RX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64) +#define CFG_TUD_PRINTER_TX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64) +``` + #### How to Test The device exposes two endpoints on the host: |