copilot

• To set the GPIO HIGH (3.3V) at power-up:
  • You can use a pull-up resistor connected between the GPIO pin and 3.3V.
  • Assuming you're working with standard GPIO logic levels and want to work with a safe margin, a $10k\Omega$ resistor could be typical. Connect this resistor from the GPIO pin you're focusing on to a $3.3V$ power supply pin on the Raspberry Pi.
    For instance, to pull GPIO7 ($\widetilde{CE1}$) HIGH, you would:
    • Identify a $3.3V$ pin on the RPi1 (Pins 1 or 17).
    • Use a $10k\Omega$ resistor (not included in your listed parts, so assume RXX as a placeholder for a new resistor).
    • Connect RPi1:3V3 to RXX:1.
    • Connect RXX:2 to RPi1:~CE1~/GPIO7.
• To set the GPIO LOW (0V) at power-up:
  • You can use a pull-down resistor connected between the GPIO pin and ground (GND).
  • Similarly, a $10k\Omega$ resistor is a good starting point for the pull-down resistor to ensure only a small current flows when the GPIO is set to OUT/HIGH by the Pi. Connect this from your GPIO pin to any GND pin on the Raspberry Pi.
    For example, to pull GPIO7 ($\widetilde{CE1}$) LOW, you would:
    • Connect RPi1:~CE1~/GPIO7 to RXX:1 (assuming RXX is a $10k\Omega$ resistor for pulling down).
    • Connect RXX:2 to RPi1:GND (you can use any GND pin like pins 6, 9, 14, etc.).