GPIO Pinouts?

[wesbos]

am I correct in that the github-badger-2350-with-filesystem.uf2 firmware isn't open sourced?

I'm looking for info on the pinouts of the buttons and the LED lights and I can't seem to find anything on here. They are named in the badgerware IO, but I dont see them mapped to any GPIO anywhere. Is that code closed source? Can you provide a list of the pinouts?

[cardonator]

Similarly, is there any data on the UART on the side of the badge? The 3.3v is outputting power but I don't see any activity on the GPIO pins between power and ground.

[wesbos]

I think the pins on the side are bitstream - not typical UART

I had to write a class to do send LED pixel data for my video https://www.youtube.com/watch?v=_jPm_zN95FE

import time
from machine import Pin, bitstream

class NeoPixel:
    """
    NeoPixel driver using bitstream (bit-banging) for GPIO pins > 29
    that are not accessible by PIO.
    """
    def __init__(self, pin, n, bpp=3, timing=1):
        self.pin = Pin(pin, Pin.OUT)
        self.n = n
        self.bpp = bpp
        self.buf = bytearray(n * bpp)
        self.timing = timing

    def __setitem__(self, i, color):
        # Store color in GRB order (WS2812 format)
        offset = i * self.bpp
        self.buf[offset] = color[1]      # Green
        self.buf[offset + 1] = color[0]  # Red
        self.buf[offset + 2] = color[2]  # Blue

    def __getitem__(self, i):
        offset = i * self.bpp
        return (self.buf[offset + 1], self.buf[offset], self.buf[offset + 2])

    def fill(self, color):
        for i in range(self.n):
            self[i] = color

    def write(self):
        # Use bitstream for bit-banging WS2812 protocol
        # WS2812 timing: (high_time_0, low_time_0, high_time_1, low_time_1) in nanoseconds
        # WS2812: 0 = 400ns high + 850ns low, 1 = 800ns high + 450ns low
        bitstream(self.pin, 0, (400, 850, 800, 450), self.buf)
        time.sleep_us(60)

[cardonator]

Oh thanks, that makes sense!

[martinwoodward]

The Pimoroni team did all the hard work on the final UF2. With supply chain delays we were cutting it close to the wire.

The plan is for the badgeware stuff to be open like all the Pimoroni code is but they are still working on some stuff to get their retail version of the Tufty 2350 out the door (they very kindly delayed the release of that to help work on the Universe badge)

But to your point about GPIO pins, let me get a comprehensive list together and post back.

[lowfatcode]

Hey all! We're just mopping up a few bits and pieces before releasing the firmware source but it won't be long now.

In the meantime here's the pin assignments:

• 0..3: LEDs on badge rear
• 4 & 5: I2C SDA and SCL
• 6..10: User buttons: DOWN, A, B, C, UP
• 11: VBUS detect
• 12: Charging status
• 13: RTC alarm
• 14: RESET switch (used to implement the long press, double tap functions)
• 15: Button press INT (used to wake badger on button presses)
• 20 & 21: IR sensor TX & RX
• 22: HOME button
• 40: VBAT sense
• 41: Power rail enable
• 43 Light sensor
• 44..47 extension header

Other pins are generally used by the wireless module, LCD, QSPI flash, etc.

Hope that helps!