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New Errata Document for SAMD21 There is a new Errata document for SAMD21 at <https://ww1.microchip.com/downlo... The large number of errors described justifies the old quote from developers "Why test the... |
Monday, 30 August 2021 - 07:55 |
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Is reconfiguration of SERCOM_SPI MISO pin as input possible? I'm writing a program for a SAMD21G to drive a MAX7219 8-digit 7-segment display controller over SPI. The MAX7219 only needs ~CS, SCLK and MOSI, but not MISO If I configure a... |
Wednesday, 23 June 2021 - 15:26 |
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Microchip Studio 7.0.2542 encounters exception at start After de-installing Microchip Studio and the 2015 shell, then installing Rev. 7.0.2542 as suggested in https://community.atmel.com/foru... the program starts, produces the... |
Friday, 12 March 2021 - 20:30 |
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Microchip Studio 7.0.2542 crashes at start After updating to the above rev. the program crashed at start. Error message "An exception has been encountered. This may be caused by an extension" The message box showed that... |
Monday, 8 March 2021 - 18:00 |
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Cortex M0+ hard fault documentation A program ends up with a hard fault. I couldn't find a detailed description of the registers used - for instance the document doesn't describe the exception number in... |
Tuesday, 18 February 2020 - 18:54 |
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const in declarations Could someone point me to an explanation of the use of const in declarations of variables.. There are few articles about the use of PROGMEM in AVRs. A utility like that on www.... |
Monday, 3 February 2020 - 17:32 |
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SAM-BA bootloader download Where can one find the SAM-BA monitor and PC application? The link in section 6.4 of the Application Note AT07175 doesn't point to it - the note doesn't even... |
Friday, 24 January 2020 - 19:44 |
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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 |