Fixed DDI and AMPCD boards

[amanuense]

added bypass capacitors
added pullup for IRQ line

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Addresses #52

Type of change

Please delete options that are not relevant.

• New MCAD (new Mechanical Model)
• Change MCAD (fixed issue with existing MCAD model)
• New ECAD (new PCB)
• Change ECAD (fixed issue with existing PCB)
• New software module (new software module for slave)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist: (Delete non-relevant sections)

PCB/ECAD:

• Requirements definition
• Schematic completed
• PCB routed
• PCB constrained by physical footprint limitations
• PCB critical component location requirements met
• PCB and schematic pass DRC check
• PCB does not have unconnected pads
• Schematic/PCB reviewed
• BOM generated
• Gerbers generated
• MCAD generated

[jrsteensen]

Approved as is. All action items complete. Ready for dedicated PCB review.