Configuring Inputs and Outputs

Official Hardware Portenta Family Portenta H7
1

Hi,

I've recently purchased an Arduino Portenta H7 controller along with a Portenta Breakout board.

I'm building a project which has the following pinout structure;

  1. 8x Digital Input Pins
  2. 7x Digital Output Pins
  3. 8-10x PWM Output Pins
  4. 11x Analog Input Pins
  5. 2x I2C Ports
  6. 1x Ethernet Port

But my breakout board doesn't show that many pins. What do I do now? Should I make my own breakout board? Or can I repurpose any unused pins to be configured to other pins?

Any help on this would be really helpful.

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The ENet port, and the 2xI2C is no problem

There are 10x PWM as well -so that is OK also

There are 8x Analog and 6xGPIO

So you are missing just 3 analog inputs, and 9 GPIO

I would suggest

Either multiplexing the analog inputs with an analog multiplexer (if the decrease in speed is acceptable, or get an SPI or I2C A/D converter

The GPIO inputs as well - you can use a TCA9554APWR - it has 8x general purpose I2C I/Os - you would need 2 of them.

You can still use the breakout board, and only make a smaller board for all the extra components if a low volume project, otherwise a new board eliminating what is not necessary will decrease the overall size.

1 Like
4

Thank you @rs77can! Will look into this and get back to you.