urn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f8249 2017-07-14T05:15:29-06:00 SparkFun Electronics Chris Torrence urn:uuid:6ef60809-638d-3d34-8c69-684000c8418c 2017-06-10T21:53:26-06:00 <p>I&rsquo;m trying to use this board with Microsoft/SparkFun&rsquo;s makecode: https://makecode.sparkfun.com/ When I download the code from the website, it says &ldquo;Press the reset button once on the SAMD21. Move the .uf2 file to the ARDUINO-M0 drive to transfer your code&hellip;&rdquo;. I don&rsquo;t see any ARDUINO-M0 drive, either in the Finder, or in /Volumes. The USB port does show up in /dev/tty.usbmodem1411, but copying the file to there does nothing. Any advice?</p> TomKeddie urn:uuid:6278d57c-784b-9aa7-813d-e785447e99b4 2017-05-01T11:52:33-06:00 <p>I added support to the Microsoft UF2 booloader for this board. See https://github.com/Microsoft/uf2-samd21 and https://github.com/Microsoft/uf2-samd21/pull/17.</p> <blockquote><p>This repository contains a bootloader, derived from Atmel’s SAM-BA, which in addition to the USB CDC (serial) protocol, also supports the USB MSC (mass storage).</p></blockquote> <p>You can build it with make BOARD=sparkfun-samd21-dev</p> M-Short urn:uuid:d0e6fe5b-efc1-6d0b-44ee-bbe6445e3602 2016-09-29T09:13:39-06:00 <p>The bootloader is designed to upload code over USB, but I see no logical reason why a bootloader couldn&rsquo;t be written to upload code over serial. Also don&rsquo;t forget the programming header on the board, although that might not work well with the RS-422 transceivers.</p> Aaron G urn:uuid:fb18cc46-6738-0a93-f528-dfe6d97ecd20 2016-09-28T20:40:37-06:00 <p>With this breakout/bootloader is it possible to upload over one of the UART interfaces? If so, how does one go about doing this and which SERCOM port or ports does it work on? Is it possible to initiate a reset/upload using RTS as we currently do with the Pro Mini?</p> <p>Uploading via USB is not an option for our use case, because the devices are going to be located in public areas and running USB connections to those areas is impractical and has problematic security implications. Since our code changes frequently, sending someone around with a laptop isn&rsquo;t an option either. For our existing Pro Mini-based generation of devices, we use RS-422 transceivers for uploading/communication, and we would like to keep it that way.</p> <p>Thanks! - Aaron</p> hodginsa urn:uuid:44730566-5596-df96-b1c1-9d780f7b19ce 2016-05-10T14:01:19-06:00 <p>I need to use SWCLK and SWDIO as general IO for a board. Is there a way to do this with this board using the Arduino IDE?</p> Customer #762343 urn:uuid:e81188e2-144b-ebf6-5509-f625730900d7 2016-03-13T22:15:05-06:00 <p>I bought SparkFun SAMD21 Dev Breakout and started using Arduino IDE.After 2 Days it Stopped working.Power Led is illuminating when i connected the usb cable and port is not detecting and i am unable to upload the program into it.I also tried troubleshooting methods given by Sparkfun but no use,its not working.Similar for my two same Boards.Can anyone help me to solve the problem.</p> flight urn:uuid:6ea22ea7-a52b-1b35-3224-150f1ff573ae 2016-02-18T14:13:40-07:00 <p>Has anyone tried out the sampling frequency of the ADC on this board? I know the datasheet said that it&rsquo;s capable of 350ksps. I was just wondering if anyone has seen this first hand or if that was a theoretical sample rate.</p> Blacklab1 urn:uuid:5829a86e-25cd-6269-e5d1-ac27bfb15c69 2016-02-06T20:22:10-07:00 <p>Q: about the Arduino IDE &ndash; has anyone figured out why the SamD boards are grayed out under Tools\boards in the 1.6.6 ? Adafruit had some answers about problem libraries, but not sure if it addresses this issue. Wish Nate had someone who was in charge of software issues.</p> inkspell4 urn:uuid:55bba6b5-fe13-d952-ada3-01d0d7e9d642 2016-02-04T15:44:21-07:00 <p>Does this board have Debugging capabilities like the Arduino Zero?</p> Customer #751966 urn:uuid:67f266b3-bf2c-5702-0a9b-1bfa19bc1ebb 2016-02-04T13:24:18-07:00 <p>Yes, host versus device mode switching is determined by the cable plugged into the native port so it does not matter what the sketch is doing. Plugging in an OTG to host cable switches the native port into host mode. Plugging a cable to a computer host port switches the native port to device mode for bootloading, console, etc.</p> <p><a href="http://x10linux.blogspot.com/2016/01/usb-keyboard-and-midi-on-sparkfun.html" rel="nofollow" >Long answer</a></p> prizepony urn:uuid:c9fcaf68-58eb-63a1-dc89-5c5df37e5a8a 2016-02-04T08:38:14-07:00 <p>My understanding from the schematic is that USB host mode will work. The USB port on board is a microAB connector so it accepts microA and microB cables. It should operate like the native port on the Arduino Zero.</p> <p>My larger question is&hellip; if you place this dev board into USB host mode can you use the native USB port to also re-flash a new Arduino sketch to bring it out of USB host mode?</p> stevenvh urn:uuid:e41e2bf2-1a6c-cfd2-fc67-aaa8938b34b0 2016-02-02T12:25:30-07:00 <p>Actually it&rsquo;s New-Zealand&rsquo;s spelling. The Brits just spell it as &ldquo;schematic&rdquo;.</p> davemody urn:uuid:c7556fa1-0963-4b45-5802-7ed836d3e637 2016-01-26T21:49:43-07:00 <p>Dear FFT (fast fourier transform) users, If I understand this correctly, the processor is a Cortex-M0+. Therefore, should it support the CMSIS DSP (digital signal processing) library? If so would it give much improved FFT processing speed over using the standard Arduino library?</p> <p>Installing the Teensy 3 seems to do the job of getting the CMSIS DSP library installed, I think. However, calls to functions shown in the arm_math.h library are indicating an error in the Arduino compiler library. Does anyone have thoughts on making this work?</p> <p>Does anyone have any insight into the best way to get an FFT function running on this board?</p> wiggles urn:uuid:d651d3cd-b994-4bd6-926a-8ce7230dd614 2016-01-21T21:56:59-07:00 <p>Thanks for the info, went ahead and ordered myself an ATMEL ICE and it was well worth it. Far more stable than the dragon ever was for me.</p> Jimb0 urn:uuid:8a379082-cb16-982d-d91f-7d87044dbb09 2016-01-18T08:22:54-07:00 <p>Unfortunately not. As cool as the Dragon is, it doesn&rsquo;t support ARM chips like the SAMD21.</p> wiggles urn:uuid:e40e4a14-9935-e663-9734-91775f454342 2016-01-17T04:17:23-07:00 <p>Can the bootloader be flashed with JTAG from an AVR Dragon or will I need to purchase an ICE programmer?</p> Jimb0 urn:uuid:e3d52f28-cee9-c52e-4eed-8db53c5227c9 2016-01-11T08:49:52-07:00 <p>Kinda, sorta. You&rsquo;ll need an ARM programmer that&rsquo;s compatible with the SAMD chip (the <a href="http://www.atmel.com/tools/atatmel-ice.aspx" rel="nofollow" >Atmel-ICE</a>, for example), and a different set of software tools to upload the code from your computer (<a href="http://www.atmel.com/tools/ATMELSTUDIO.aspx" rel="nofollow" >Atmel Studio</a> - and the included <a href="http://www.atmel.com/webdoc/atmelstudio/atmelstudio.ChapterCommnadLineUtility.html" rel="nofollow" >atprogram CLI</a> work well if you&rsquo;re on Windows). But, yeah, aside from the different tools, it&rsquo;s pretty analogous to loading a bootloader onto the ATmega328.</p> hodginsa urn:uuid:b4b80fd1-9d71-af5c-07ec-60b7bc5d0e88 2016-01-09T10:10:49-07:00 <p>If I design my own board with the SAMD21, can the Arduino bootloader be put on in the standard way with the ISP header and an ISP programmer? i.e. the same way an Atmega328 bootloader is added.</p> Customer #751966 urn:uuid:0784dce0-2c5a-8ca0-894b-8b942d87d08f 2015-12-15T17:24:47-07:00 <p>Is USB host mode supported on either SAMD21 boards? I am using a Arduino Zero with a USB OTG to host cable + USB keyboard. The example USB keyboard sketch works great.</p> <p>Can the same be done using either or both SAMD21 boards? Is the micro USB port equivalent to the Zero native USB port? How should be board be powered so it provides 5V USB output to the keyboard?</p> <p>The schematic shows the micro USB ID pin and USB_HOST_EN are connected which makes me think host mode should work but I do not understand how the hardware works.</p> Pathogen-David urn:uuid:a54c5a10-57cb-c775-ba7b-f22689935c77 2015-12-02T14:26:29-07:00 <p>Overriding the ISRs does not seem to work the same as other Arduino boards.</p> <p>If you look at <a href="https://github.com/arduino-org/Arduino/blob/4fa245df84e0147cc7a1fd6bf5aa96cc3de38ada/hardware/arduino/samd/cores/arduino/startup.c#L76" rel="nofollow" >the Arduino SAMD source code</a>, you can see that the vector table is filled with many named functions that (by default) are aliased to a dummy handler that loops forever. You can add a handle simply by defining a function with the name of the interrupt you want to use.</p> <p>For instance, I made a handler for the SERCOM2 interrupt by defining a function like this:</p> <pre><code>void SERCOM2_Handler(void) { // Do stuff here } </code></pre> Pathogen-David urn:uuid:d4383a81-ede6-2b3f-45c0-5bc5ae3f5446 2015-12-02T14:22:01-07:00 <p>I did not have to install any of the three items in the first paragraph under &ldquo;Install Arduino SAMD Boards&rdquo;, I just installed the board support in the Arduino IDE and everything worked fine from there.</p> <p>(Meant to reply to your first comment, accidentally did this one. Whoops.)</p> M-Short urn:uuid:80da8cf7-d4f9-b0d7-4312-d424425e04dc 2015-11-30T11:49:54-07:00 <p>You are correct. I blame it on my brain seeing things after staring at that datasheet for so long. I&rsquo;ll hopefully get it updated in the next week or so.</p> Pathogen-David urn:uuid:5551b3cd-e5f3-381c-b67d-275fc751af3e 2015-11-30T10:57:38-07:00 <p>In the graphical datasheet, PA14 is marked as I2C-capable. However, the Atmel datasheet does not mark this pin as I2C-capable. (It seems no PAD2 or PAD3 pins are I2C capable, actually.)</p> Rando urn:uuid:7613447d-75e9-de8f-4441-e05058797d1f 2015-11-25T20:45:19-07:00 <p>Howdy all! I am a little confused about setting up this board for Arduino compatibility.</p> <p>Since the new Arduino IDE supports the Zero already, why would I need to install another arm tool chain, wouldn&rsquo;t the native Arduino compiler be sufficient? Also the Shumatech Basso avrdude &ldquo;replacement&rdquo; is not happy loading on Windows 10. I am in test mode so driver signing should not be issue, and I&rsquo;m getting a silent installation failure. Is there an alternative?</p> <p>Which libraries should I expect to work if and when I get you installation instructions noodled out?</p> <p>Best,</p> <ol type="a"> <li></li> </ol> Rando urn:uuid:8bcd363c-031c-edea-d539-639e64e87b4b 2015-11-25T20:43:52-07:00 <p>(Not that I&rsquo;m complaining this is a great board!)</p> duderu urn:uuid:f08235b3-4ca1-f88f-687f-156d6029a5a8 2015-11-23T22:21:40-07:00 <p>Ok folks&hellip; I must say&hellip; I priced the components at mouser and the board, with my modifications at oshpark and I must say&hellip; this is a great deal. Components, not including jst or usb jacks was $15. 3 boards at osh came to $8 a piece. That doesn&rsquo;t include stencil and solder paste and the risk of it not cooking right, and your time. These boards are a major deal! I&rsquo;m just going to make a shield for it instead and buy these boards or recommend them for my open source project. My only issue is the RTC. Would be nice if the next iteration of this board had some accommodations for a coin cell battery to keep the RTC alive. No biggie though&hellip; this board looks like the way to go and will be ordering some when I get my shield designed out.</p> Customer #30874 urn:uuid:320a58b2-9150-ba8d-eaa6-de79ee3188aa 2015-11-19T12:59:39-07:00 <p>I tried to use the ISR like the ONE : ISR(TIMER1_COMPA_vect) // timer compare interrupt service routine</p> <p>but i receive this error:</p> <p>exit status 1 expected constructor, destructor, or type conversion before &lsquo;(&rsquo; token</p> <p>I will apreciate your help</p> M-Short urn:uuid:29513421-778b-fdda-122a-bc13d5b0ead9 2015-11-17T10:40:59-07:00 <p>Only A0-A5 are set up in the Arduino IDE. I&rsquo;m not sure what you are referring to with A6-A13. If you check out the graphical datasheet you will see that about half the digital pins can be configured to work as ADC pins. But selecting the ADC functionality disables the digital functionality on a pin so they are not configured that way by default. If you need more ADC pins you can definitely configure 7 additional pins on the board (8 if you want to figure out how to connect an analog input to the RX LED) and name them however you&rsquo;d like.</p> hodginsa urn:uuid:b1c3dc05-9ac3-2faf-b211-3942ce258123 2015-11-17T09:27:21-07:00 <p>Do all of the ADCs work with the Arduino IDE? As in all A0-A13, not just A0-A5.</p> bentwookiee urn:uuid:d253e5c8-c05f-37b6-70b3-c72049d44f04 2015-11-16T09:19:17-07:00 <p>If anyone is looking for a debug header, part# 20021111-00010T4LF from FCI looks like a good candidate. Also, I highly recommend the Atmel-ICE debugger, for those going beyond the Arduino IDE. (copied from my post under the mini breakout).</p> Jimb0 urn:uuid:a306d543-360f-c505-81db-295cf297bffb 2015-11-16T09:14:30-07:00 <p>I&rsquo;ve added the bootloader source and our compiled binary to the <a href="https://github.com/sparkfun/SAMD21_Dev_Breakout/tree/master/Firmware" rel="nofollow" >GitHub repo</a>.</p> <p>It&rsquo;s a slightly modified version of the Arduino Zero bootloader (added some code to blink RX and TX LEDs, swapped in our VID/PID), which is based on Atmel&rsquo;s <a href="http://www.atmel.com/Images/Atmel-42366-SAM-BA-Bootloader-for-SAM-D21_ApplicationNote_AT07175.pdf" rel="nofollow" >SAM-BA bootloader</a>. That should be port-able to the SAMD21J parts.</p> BBORNCR urn:uuid:7838cbc0-bff3-5979-0a29-881f36db3535 2015-11-16T05:56:08-07:00 <p>Great design! Sparkfun did what Arduino should have done with the Zero.</p> Dragon88 urn:uuid:c6aa57ff-f35f-919e-c5eb-af4de4253e7c 2015-11-15T18:53:16-07:00 <p>If you check the schematic and datasheet, you&rsquo;ll note that the 32.768 kHz crystal is connected to the XOSC32 pins. This is a secondary input specifically for 32kHz oscillators, as the name implies. Ideally an external crystal for the primary clock would be connected to the <em>XOSC</em> inputs. However, I&rsquo;m pretty sure they couldn&rsquo;t do that for compatibility reasons with the Arduino Zero. The Zero uses these pins as D2 and D5. So it&rsquo;s Arduino&rsquo;s fault, not Sparkfun&rsquo;s. Assuming you think it&rsquo;s a problem. Is it a problem? Meh. The FLL/PLL on the Atmel SAM chips isn&rsquo;t very good anyway in my experience.</p> MonsterBot urn:uuid:2158f682-09d6-0f76-c1fa-e6a72feba456 2015-11-15T02:30:13-07:00 <p>That&rsquo;s an interesting observation.</p> <p>I don&rsquo;t see why the board would not function without the external oscillator.</p> <p>I&rsquo;m curious to know why SFE chose to go with an external 32.768kHz crystal on this board. The SAMD21 has two 32.768kHz internal oscillators&ndash;both a 32.768kHz High Accuracy and a 32.768kHz Ultra Low Power (in additional to several other full-speed internal oscillators). Perhaps may more accuracy?</p> Customer #694220 urn:uuid:b8cf0591-5a24-0c0f-8a7f-f442b3c6215b 2015-11-14T14:42:14-07:00 <p>I&rsquo;m wondering if the 32.768kHz crystal is only used for the RTC? Would the board function without this crystal (minus RTC capabilities)?</p> scharkalvin urn:uuid:e6dd2879-39b1-f692-cc89-8ff2665640e8 2015-11-14T12:59:05-07:00 <p>I&rsquo;d like some info on the bootloader present on these boards, are you using the arduino zero code, or did you create your own, and if the later, where is the source? I&rsquo;d also like the instructions for updating/replacing/repairing the bootloader should it get bricked.</p> <p>I&rsquo;m thinking of buying one of these boards, but actually I&rsquo;d like to see a version based on the SAMD21J18 part (64 pin). That much flash and ram is just crying for more I/O pins, and a &ldquo;MEGA&rdquo; footprint version with this cpu would be nice. I&rsquo;m kinda wondering how to hack together something like that myself, hence the bootstrap questions.</p> <p>One more thing, 19K code just for the blinky sketch? True that&rsquo;s only 4% of the code space, but the same sketch on an AVR would be a LOT smaller. Where&rsquo;s the overhead?</p> xkcdFan1011011101111 urn:uuid:862668c4-3678-f8bd-6837-faf4cd112e54 2015-11-14T10:47:46-07:00 <p>Please please pretty please make a board like this for a chip that has a hardware floating point unit (such as the AT32UC3C or ATSAMG53).</p> <p>My navigation filters and controllers would run so much faster with hardware floating point instead of emulated floating point!</p> Aditya urn:uuid:8566674c-088f-feb1-d859-03cda65fc439 2015-11-14T08:10:06-07:00 <p>&ldquo;Shcematic&rdquo; &ndash; I&rsquo;m guessing this is the British way of spelling this? :P</p> <p>Great board! Definitely a good deal compared to the Zero.</p> dobra-dobra urn:uuid:999d6abb-de55-5f8e-6705-80b06e40cd94 2015-11-14T07:34:45-07:00 <p>Whoa! Arduino Zero is sold for $46.20 + VAT, which will be more than $56 overall. If I will ever decide to try this chip, I will pick this board. Especially when Arduino IDE does not support debugger.</p> Customer #260321 urn:uuid:37685ba4-18f3-6bf0-2813-f6afa7291853 2015-11-13T11:39:12-07:00 <p>I like the connectors you have chosen for power and micro USB. Good added value! This is an affordable alternative to the Zero for folks who don&rsquo;t need EDBG support.</p> <p>I don&rsquo;t like the fact that you made the board without the headers. Is there a chance that you can offer the full version as another SKU?</p> Neuromancer2701 urn:uuid:e0c5cdcb-d8e4-7eb5-085e-9f7dbb16c8a6 2015-11-13T11:24:45-07:00 <p>Would love to see a SAMC21 version of this? 5V tolerance for the win!! Not sure when the chips will be available in bulk though.</p>