OP wireless SPI CS – when high also enables GPIO29 ADC pin to read VSYS These special GPIO pins (not accessible for interfacing) and their functions are given in the table below: Apart from these pins, Pico w also offers a 3-Pin header for debug interface which is located near the RP2040 Chip. All GPIOs are operating at a 3.3V logic level.
Out of these 30 pins, GP23, GP24, GP25, and GP29 are not exposed on the header, hence we only get a total of 26 GPIO pins. These 26 digital input and output pins are labeled as GP0, GP1, and so on up to GP28. Raspberry Pi Pico W is pin-to-pin compatible with the older Pico board and has a total of 40 Pins out of which 26 are multipurpose GPIOs. Raspberry Pi Pico W incorporates an Infineon CYW43439 wireless chip that supports IEEE 802.11 b/g/n wireless LAN, and Bluetooth 5.2. The main improvement is the addition of Wi-Fi and Bluetooth functionality. Similar to the Pico board, which we discussed earlier, the Pico W board is also built around the Raspberry Foundation in-house ARM chip RP2040.
It is the successor of the popular Raspberry Pi Pico board. Raspberry Pi Pico W is Raspberry Pi's first wireless microcontroller board, designed especially for physical computing.
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