Sparkfun MicroMod SAMD51 Documento tecnico

MicroMod SAMD51 Processor Board Hookup Guide

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Introduction

With the MicroMod specification, we shrunk down the PCB size for the SAMD51 32-bit ARM Cortex-M4F MCU!

This tutorial covers the basic functionality of the MicroMod SAMD51 and highlights its features.

Required Materials

To follow along with this tutorial, you will need the following materials. You may not need everything though

depending on what you have. Add it to your cart, read through the guide, and adjust the cart as necessary.

SparkFun MicroMod SAMD51 Processor

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DEV-16791

SparkFun Mini Screwdriver USB 3.1 Cable A to C - 3 Foot

Suggested Reading

If you aren't familiar with the MicroMod ecosystem, we recommend reading here for an overview.

MicroMod Ecosystem

If you aren’t familiar with the following concepts, we also recommend checking out these tutorials before

continuing.

Hardware Overview

M.2 Connector

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TOL-09146

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CAB-14743

SparkFun MicroMod SAMD51 Processor

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DEV-16791

SparkFun MicroMod ATP Carrier Board

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DEV-16885

Getting Started with MicroMod

Dive into the world of MicroMod - a compact interface

to connect a microcontroller to various peripherals via

the M.2 Connector!

New!

All of our MicroMod Processor Boards come equipped with the M.2 MicroMod Connector, which leverages the

M.2 standard and specification to allow you to install your MicroMod Processor Board on your choice of carrier

board. Most of the pins use a common pinout to ensure cross platform compatibility.

SAMD51 Processor

The brains of the processor board is the ATSAMD51J20 32-bit ARM Cortex M4 processor. An external 32.768kHz

crystal is used as the clock for the ATSAMD51. However, the MCU itself has a maximum CPU speed of 120MHz.

Flash Memory

On the back of the board is the W25Q128JVPIM, which adds 128Mb (16MB) of flash memory externally.

LED

A STAT LED is added to the top side of the board. This is useful debugging or as a status indicator. Additionally,

you can use this to determine if the board is in bootloader mode. Pressing the reset button twice will put the board

into bootloader mode causing the LED to fade in/out. This is connected to pin 13.

MicroMod SAMD51 Processor Pin Functionality

The complete pin map can be found in the table below or you can refer to the schematic.

Heads up! The pin table below and schematic both include the SAMD51 pin associated with each MicroMod

pin and this correlation can be used to identify alternate uses for pins on the SAMD51 Processor Board. For

many of the General Purpose I/O pins and other pins with multiple signal options, refer to your Carrier

Board's Hookup Guide for information on how those pins are configured what they are used for. Not all pins

are used on every Carrier Board.

SAMD51 PROCESSOR PINOUT TABLE

AUDIO UART GPIO/BUS I C SDIO SPI0 Dedicated

SAMD51

Alternate

Function

Primary

Function

Bottom

Top

Primary

Function

Alternate

Function

SAMD51

(Not

Connected)

75 GND

3.3V_IN 74 73 G5 D7

3.3V 72 71 G6 D8

-70 69 G7 D9

-68 67 G8 D10

-66 65 G9 D11

-64 63 -

-62 61 SPI_CIPO 47

-60 59 SPI_COPI 45

43 I2S_MCLK 58 57 SPI_SCK 46

40 I2S_SDO 56 55 SPI_CS 48

41 I2S_SDI 54 53 I2C_SCL1 TX2 36

44 I2S_FS 52 51 I2C_SDA1 RX2 37

42 I2S_CLK 50 49 A4 22

D6 G4 48 47 PWM1 A3 21

D5 G3 46 45 GND

D4 G2 44 43 CAN_TX 39

D3 G1 42 41 CAN_RX 38

D2 G0 40 39 GND

18 A1 38 37 -

MICROMOD GENERAL PINOUT TABLE

MICROMOD GENERAL PIN DESCRIPTIONS

GND 36 35 -

17 DAC A0 34 33 GND

19 A2 PWM0 32 31 Module Key

Module Key 30 29 Module Key

Module Key 28 27 Module Key

Module Key 26 25 Module Key

Module Key 24 23 SWDIO

36 I2C_SCL1 UART_TX2 22 21 SWDCK

37 I2C_SDA1 UART_RX2 20 19 UART_RX1 32

D1 D1 18 17 UART_TX1 33

D12 I2C_INT 16 15 -

34 I2C_SCL 14 13 -

35 I2C_SDA 12 11 -

D0 D0 10 9 -

29 HOST_ENABLE 8 7 GND

RESET# (Open

Drain)

6 5 USB_D- USBHOST_D- 30

3.3V_EN 4 3 USB_D+ USB_HOST_D+ 31

3.3V_IN 2 1 GND

Board Dimensions

The board takes advantage of the standard MicroMod form factor.

Hardware Assembly

If you have not already, make sure to check out the Getting Started with MicroMod: Hardware Hookup for

information on inserting your Processor Board into your Carrier Board.

For simplicity, we'll be using the MicroMod ATP Carrier Board to program the board. At a minimum, your setup

should look like the image below with the MicroMod SAMD51 inserted into the MicroMod ATP Carrier Board with a

USB-C cable.

Qwiic-Enabled Device

If you decide to use a Qwiic device (because why not?!), simply insert a Qwiic cable between the two connectors.

Getting Started with MicroMod

OCTOBER 21, 2020

Dive into the world of MicroMod - a compact interface to connect a

microcontroller to various peripherals via the M.2 Connector!

New!

UF2 Bootloader & Drivers

Heads up! Please be aware that the SAMD51 Thing Plus is NOT currently supported on Windows 8 due

to a lack of support drivers for those specific OS's.

The SAMD51 Processor Board is easy to program thanks the UF2 bootloader. With the UF2 bootloader, the

SAMD51 Thing Plus shows up on your computer as a USB storage device without having to install drivers for

Windows 10, Mac, and Linux!

What is UF2?

UF2 stands for USB Flashing Format, which was developed by Microsoft for PXT (now known as MakeCode) for

flashing microcontrollers over the Mass Storage Class (MSC), just like a removable flash drive. The file format is

unique, so unfortunately, you cannot simply drag and drop a compiled binary or hex file onto the Turbo. Instead,

the format of the file has extra information to tell the processor where the data goes, in addition to the data itself.

For Arduino users, the UF2 bootloader is BOSSA compatible, which the Arduino IDE expects on ATSAMD

boards. For more information about UF2, you can read more from the MakeCode blog, as well as the UF2 file

format specifiation.

Double-Tap to Launch the Bootloader

The bootloader is what allows us to load code over a simple USB interface. To upload code, you will need to

manually enter bootloader mode by rapidly double-tapping the reset button (after hitting the reset button once,

you have about half a second to hit it again). The board will remain in bootloader mode until power cycles

(happens automatically after uploading code) or the reset button is hit again (once).

Double-tapping the reset button to enter bootloader mode.

On the SAMD51, the there are a clues to if it is in bootloader mode:

The D13 LED indicator will be slowly fading (may appear to be blinking).

Board will show up under a different COM port.

The board will appear as a USB mass storage device under the name USB Serial Device.

Driver Verification

To verify that your driver is working, you should see the difference in the following pictures after plugging in your

SparkFun SAMD51 Thing Plus. Alternatively, once you have the Arduino IDE installed, you should also see a

change in the number of available Serial/COM Ports (you may need to restart the Arduino IDE for the board to

populate).

Windows

Check that the board shows up in your device manager. You can click the Start or ⊞ (Windows) button and type

"device" to quickly search for the application. (*On Windows 10, the quick search function is picky on the spelling

of the application you are searching for. For example, you may get results using "devi" and none for "device".)

Screenshot of Window 10 Device Manager with the SAMD51 Processor Board on COM25. Click to enlarge.

Mac OSX

Open the Terminal and run the following command ls /dev/cu.* in the Terminal and check for the following

changes (your board may show up under a different device name). To open the Terminal, open your Applications

folder, Utilities folder, then double-click on Terminal. Otherwise, press ⌘ (Command) + space bar (Space Bar)

to launch Spotlight and type "Terminal," then double-click the search result.

Screenshot of Mac OSX terminal with the SAMD51 Processor Board on cu.usbmodemFA121. Click to enlarge.

ls /dev/cu.*

Note: If you are still unsure of how to access the Terminal, watch this video or read this Apple support article.

Raspbian

Run the following command ls /dev/ttyACM* in the CLI/Terminal and check for the following changes (your

board may show up under a different device name).

Screenshot of Raspberry Pi CLI with the SAMD51 Processor Board on ttyACM0. Click to enlarge

ls /dev/ttyACM*

Setting Up the Arduino IDE

Note: If this is your first time using Arduino IDE or board add-on, please review the following tutorials.

Installing the Arduino IDE

Installing Board Definitions in the Arduino IDE

Install Arduino SAMD Board Add-Ons

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