Files
pico-sdk/src/rp2_common
Graham Sanderson 13be546dc3 pico_stdio improvements (#598)
* add stdio_usb_connected() method
* add PICO_STDIO_USB_CONNECT_WAIT_TIMEOUT_MS to allow waiting for CDC connection during init(* 
* add puts_raw and putchar_raw to skip any CR/LF translation
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This directory contains libraries specifically targeting the RP2040 or possible future related devices. It is selected when PICO_PLATFORM=rp2040 (the default) is specified for the build

hardware_ libraries exist for individual hardware components to provide a simple API providing a thin abstraction hiding the details of accessing the hardware registers directly.

pico_ provides higher level functionality you might generally find in say an OS kernel, as well as runtime support familiar to most C programmers.