diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/porting.md | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/porting.md b/docs/porting.md index 7d7d4cdb1..d3408aebd 100644 --- a/docs/porting.md +++ b/docs/porting.md @@ -62,7 +62,7 @@ All of the code for the low-level device API is in `src/portable/<vendor>/<chip ##### dcd_init Initializes the USB peripheral for device mode and enables it. -If the MCU has an internal pull-up, this function should leave it disabled. +This function should leave an internal D+/D- pull-up in its default power-on state. `dcd_connect` will be called by the USBD core following `dcd_init`. #### dcd_int_enable / dcd_int_disable @@ -81,7 +81,7 @@ Called to remote wake up host when suspended (e.g hid keyboard) ##### dcd_connect / dcd_disconnect -Connect or disconnect the data-line pull-up resistor. Define as a weak function if the MCU has an internal pull-up, otherwise do not define. +Connect or disconnect the data-line pull-up resistor. Define only if MCU has an internal pull-up. (BSP may define for MCU without internal pull-up.) #### Special events You must let TinyUSB know when certain events occur so that it can continue its work. There are a few methods you can call to queue events for TinyUSB to process. |