How to replace the pixhawk IO chip？

1

I want to join the control algorithm on the underlying IO board, but the memory and FLASH are not enough space. Now want to replace the IO pixhawk chip to stm32f405, I need to modify what files?

2

Why you want to add algorithm in I/O chip? as its name indicates, it is designed to handle I/O task only. algorithm should be in FMU processor.

What kind of algorithm you are trying to add?

3

I want to modifythe mixed control output in the mixed control documents .6 output control three motor and three servo. So I need to add the IO chip control algorithm.

4

I suggest to try using something like Pixracer instead.

5

I have now changed the PCB, joined the stm32f405 chip, in bootloader for stm32f405 has been changed, but in the modification of the px4io program, do not know what to do?

6

Pixracer up to my needs, interface and pins are not enough.

7

Or maybe you can consider PX4 on MindPX? the latest v2.8 has 8 main PWM + 8 aux for servo, probably can meet your needs.