Fixes wrong number or read/written bytes for System.Device.I2c

[RolandoMagico]

Description

• Add code to take into account the start and length of SpanByte for read/written operations.

Motivation and Context

• Fixes System.Device.I2c.I2cDevice.Write transmits more bytes than expected Home#674.

How Has This Been Tested?

Not yet tested

Screenshots

Types of changes

• Improvement (non-breaking change that improves a feature, code or algorithm)
• 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 change)
• Config and build (change in the configuration and build system, has no impact on code or features)
• Dependencies (update dependencies and changes associated, has no impact on code or features)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[dnfadmin]

All CLA requirements met.

[nfbot]

@RolandoMagico I've fixed the checklist for you.
FYI, the correct format is [x], no spaces inside brackets.

[josesimoes]

Hey @RolandoMagico !

First of all: thank you for looking into this. 👍🏻

Please use separate PRs to address each issue: one for the wrong link and another for fixing the SpanByte issue with I2C.

[josesimoes]

@RolandoMagico it would be awesome if you could replicate the fix to the STM32 implementation... 😉

[josesimoes]

Ignoring build failure for ChibiOS based targets.

[josesimoes]

LGTM!