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How do you assign processor pins to board functions? I'm working on the board design of a shield for an Arduino Zero. It needs all 23 processor pins which are connected to the shield. After a lot of laborious attempts it was... |
Monday, 19 August 2019 - 20:49 |
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SAMD21 SERCOM SPI, which pin can one use for SS slave select? I want to use a SAMD21 as SPI master with software control of the SS slave select signal (CTRLB.MSSEN = 0) One can configure which PADs of the SERCOM peripheral are used for... |
Wednesday, 17 July 2019 - 20:08 |
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SAMD21 variant D or L board Does anyone know of a breakout board with the newer SAMD21 variants D and L processors? These have an fourth TCC which is the same as the existing 24-bit TCC0, could... |
Wednesday, 20 March 2019 - 16:40 |
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SAMD21 GCLK->CLKCTRL.CLKEN not getting set What am I doing wrong? After running the code below the value of GCLK->CLKCTRL.CLKEN is not 1 for for all peripherals int main(void) { /* Store the value of CLKEN for each... |
Wednesday, 13 February 2019 - 22:05 |
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SAMD21 How to unstop a TC In order to change the TC->EVCTRL.EVACT value one has to disable the TC. As a result the STATUS.STOP bit is set. This is supposed to be cleared when one writes a RETRIGGER... |
Tuesday, 22 January 2019 - 21:54 |
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Can't get TCC0 or TCC1 to start counting I've been fighting for some time to persuade TCC and TCC1 to start timing. The board is a Sparkfun SAMD21 breakout with a SAMD21G18A Two TCs using the same GCLK as generator... |
Tuesday, 8 January 2019 - 20:24 |
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SAMD21 GCLK->CLKCTRL.CLKEN not getting set I reported a similar problem some time ago, but never got an answer which made it work The device is a SAMD21G21A in a Sparkfun breakout board GCLK2 GENDIV and GENCTRL is set up... |
Monday, 29 October 2018 - 21:20 |
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Retrigger event input action fro SAMD21 TC or TCC Perhaps a dumb question, but the SAMD21 datasheet isn't clear (to me) What does the event action RETRIGGER do when an event is received and the counter is running. Does it only... |
Monday, 29 October 2018 - 18:53 |
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AS 7 could not find Clarius..., could not load Fdk.Project On clicking Tools->Extensions and updates... in AS 7.0.131 on a 64-bit Win 10 notebook the error message appears: "Could not load file or assembly Clarius.DevStore.Client.... |
Thursday, 9 August 2018 - 18:29 |
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Atmel Studio 7 I/O display of SERCOM while debugging How does one report a bug or suggest an improvement to Atmel Studio? While debugging SAMD21 SERCOM code open the I/O window and expand the relevant SERCOM device. This shows: The... |
Wednesday, 6 June 2018 - 10:50 |
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SAMD21 event channel path question The datasheet is very vague about event channel paths. In the description of EVSYS->CHANNEL.PATH on p. 372 it says "The path choice can be limited by the channel source". It... |
Sunday, 13 May 2018 - 20:30 |
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SAMD21 spurious TC overflow and match/capture events In the SAMD21 datasheet http://ww1.microchip.com/downloads/en/DeviceDoc/40001882A.pdf#page=873 section 4.1.1.11 it mentions that there can be spurious TC overflow... |
Tuesday, 8 May 2018 - 19:32 |