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Control an LED matrix display with SAMD21 I want to control a 16x32 LED matrix display with a SAMD21. Does anyone have an app for this, also the schematic of the display? There are very many descriptions of the... |
Friday, 25 March 2022 - 20:00 |
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__attribute__ documentation and declaring variable in program memory Is there complete documentation for __attribute__ anywhere? I'm using Visual Studio with GNU/C for a SAMD21 How does one use __attribute__ in the declaration of a... |
Thursday, 3 February 2022 - 18:19 |
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App for processor pin assignment? Problem: I'm designing a shield for a Sparkfun SAMD21 board, it uses most of the available SAMD21 pins for GPS, HUB75 LED matrix display (or MAX7456 OSD), external oscillator and... |
Saturday, 22 January 2022 - 14:31 |
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How to configure SERCOM SPI master for multibyte transfers Lars provided a skeleton program for single byte transfer using hardware control (CTRLB.MSSEN = 1), it works correctly I'm still fighting a program which should control a MAX7219... |
Tuesday, 11 January 2022 - 21:23 |
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SERCOM SPI interrupt enable bit unexpectedly cleared In a program using a SAMD21 SERCOM as SPI in master mode I have the following code: SERCOM0->SPI.INTENSET.bit.TXC = 1; SERCOM0->SPI.INTENCLR.bit.DRE = 1;At entry the bit... |
Monday, 10 January 2022 - 21:12 |
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Where to find app sources for Microchip application notes I'm writing a program for a SAMD21, part of it uses SERCOM SPI. There's an application note at https://ww1.microchip.com/downlo... which describes such an application. It... |
Monday, 3 January 2022 - 17:17 |
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Microchip Studio 7.0.2542 crashes at start, yet again Back to the same problem as quoted below! I see the problem again, but only when I'm not the user Administrator, so it looks like an access denied error The logfile is attached I... |
Tuesday, 16 November 2021 - 16:28 |
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Which interrupt causes call of dummy handler? An interrupt causes a program to call the dummy handler How can I see which interrupt it was using the ICE debugger? Thanks for any hints Jerry |
Saturday, 23 October 2021 - 20:47 |
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Microchip Studio 7.0.2542 crashes at start After starting the program it displays the usual initial screen but displays the error message: An exception was encountered while constructing the content of this frame.... |
Monday, 11 October 2021 - 19:50 |
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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 |