Lepton v2 revised design --- tested working 30V / 80A MOSFETs

hardware support
51

Metin:

I am away on a business trip for work, however, these are my suggestions until I get to be able to look into this on the bench:

  1. Please double check that you included the optional build .h file to enable the hardware serial. This is a file called

build_opt.h

which must be placed in your arduino project file directory

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-D ENABLE_HWSERIAL1 -D ENABLE_HWSERIAL2 -D ENABLE_HWSERIAL3

After you do that, try hardware Serial2 again, but read the other points below first.

  1. Lower your baud rate to 9600 to make sure you exclude/filter any noise in the lines.

  2. Make sure your FTDI converter is set to work with 3.3V, not 5V logic.

  3. Make sure your Lepton RX goes into the FTDI TX, and the TX into the RX (they must be crossed).

  4. If the hardware serial still fails, here is sample code for you to try software serial, this works on any two pins. I edited the code to match the Lepton Serial pins. This will override the hardware serial and should be able to get the Serial working.

#include "SoftwareSerial.h"

#define SS_USB_RX  PA15
#define SS_USB_TX  PA2

// ANY OTHER SOFT SERIAL BAUD RATE WILL CHOKE
// BAUD RATE MUST BE BETWEEN 9600..38400
// ANY OTHER BAUD RATE WILL CHOKE

SoftwareSerial SoftSerialUSB(SS_USB_RX, SS_USB_TX);

void setup()
{
  //set pins for Software Serial communication
  SoftSerialUSB.begin(9600);
  pinMode(SS_USB_RX, INPUT);
  pinMode(SS_USB_TX, OUTPUT);

  delay(1000);
}

void loop()
{
  SoftSerialUSB.println("TEST SSERIAL_USB");
  delay(100);
}

You need to include this software serial sample code in your SimpleFOC code.

Cheers,
Valentine

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