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Merged
merged 2 commits into from
Dec 18, 2018
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Change ascii to svg #95

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10a793d
Change ascii to svg
SaitoYutaka Dec 11, 2018
7fbb96b
Update interface.md
microbit-mark Dec 18, 2018
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339 changes: 339 additions & 0 deletions software/assets/Interface.svg
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15 changes: 1 addition & 14 deletions software/interface.md
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Expand Up @@ -17,20 +17,7 @@ One of the coolest features of the micro:bit is the way that it presents itself

This is made possible by having a separate 'interface chip' or 'interface MCU' on the micro:bit dedicated to USB connections, programming and debugging. On the micro:bit, that chip is a Freescale KL26Z. The chip that developers' code runs on, and that all the peripherals are connected to (the nRF51822) is called the 'target MCU'. See the [Hardware](/hardware) page and the schematic for more details about how these two devices are connected.

PC
^ +----------------------------+
| +---------------------+ | TARGET MCU |
| | INTERFACE MCU | | +------------------------+ |
| | | | | Application | |
| | +-----------------+ | SWD | +------------------------+ |
| USB | | | +---------------------+ | micro:bit runtime DAL | |
+--------+ | DAPLink | <----------+ | +------------------------+ |
* Mass | +-----------------+ | UART | | | | | | |
Storage| +-----------------+ | | | | mbed | | SoftDevice| |
| | Bootloader | | +------------> | | | |
* UART | +-----------------+ | | +----------+ +-----------+ |
+---------------------+ +----------------------------+
* CMSIS-DAP
<img src="/docs/software/assets/Interface.svg" alt="DAPlink interface" style="background:#eeeeff; padding:20px;">

The target and interface MCUs are connected by two interfaces:

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