Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [atsamc21]

11 questions
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2 answers

ATSAMC21 - CAN configuration - Nominal bit timing vs. data bit timing & time quanta calculation

I'm trying to configure the CAN bit rate of an ATSAMC21 to 125ksps in a CAN2.0B configuration. However, after reading through the datasheet, the ASF documentation and the ATMEL start help I'm confused. I got mainly 3 questions: What is the…
KarlKarlsom
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Error 4109 No device detected in Atmel Studio

I'm working on a project involving an ATSAMC21. I soldered it onto the board and tested all pins to ensure that; a) they weren't shorted to the adjacent pins, b) they were connected to the nodes that they should be connected to, and c) they weren't…
AMacDonald
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Raspberry Pi 4 running OpenOCD can't flash ATSAMC21G18A that drives SWD pins

I'm attempting to flash a Duet 3 ToolBoard 1LC that drives some lights on the board using the SWD pins from a Raspberry Pi running OpenOCD 0.11.0. I'm using the following configuration: adapter driver bcm2835gpio bcm2835gpio_peripheral_base…
Wulfsta
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power consuption of internal 32kHz RC oscillator

I am looking for the typical power consumption of the OSCULP32K (Ultra Low Power Internal 32kHz RC Oscillator) of ATSAMC20J18A. Found nothing in family datasheet so far, only XOSC32K. Can I expect the RC oscillator to draw even less current than…
Xpector
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SAMC21 - SDADC - VREF B - which pin?

I'm planning to use an ATSAMC21G16 in one of my current projects. But I got a hard time finding the correct pin in the Datasheet for the SDADC. On page 907 the block diagram shows, that VREFB can be selected as a reference for the SDADC. On page…
KarlKarlsom
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ATSAMD21 doesn't seem to start, device not found/detected

I just finished assembling my PCB with an ATSAMD21G18A and was super thrilled to flash it with my program. Sadly Atmel Studio tells me that it can't find the device. I tried to debug the whole thing, but I still don't have it working. I think I'm…
Felix Kunz
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SPI: Receiving sets of bytes from master

I have SamC21 XPRO board as a SPI slave with program written using ASF and Arduino Uno as a dummy SPI master. I expect 3 bytes long values. The master sets SS to LOW then sends three bytes and then sets SS back to HIGH then waits a while and repeats…
Jirka Picek
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1 answer

SAMC21 FAT slow on samc21

I'm working on a samc21 and using the fat libraries provided in ASF. I have a program that takes from serial information and has to write to an SD card. The amount of bytes its around 50KB. I'm using the internal oscillator (48MHz). The problem is…
EL TIGRE CHINO
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1 answer

Which pins of ATSAMD51 are used for I2C in Adafruit Grand Central?

I am trying to recycle my old Adafruit Grand Central board to use with Atmel Studio.I Adafruit website , I2C pins ( SDA , SCL ) are marked as PB20 and PB21 to be used as SERCOM-3 but in ADSAMD51 datasheet those pins are not available for I2C. I…
Aug
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ATSAM / ASF4 - how to use HRI driver

While trying to change the analog reference voltage in ATMEL Studio for ATSAMC21 I found no way to configure this in ATMEL start and in the higher level drivers. So I searched around the ASF a bit and found, that this function is only implemented in…
KarlKarlsom
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ATSAM4E UART1 interrupt not working

I am working on ATSAM4E8C on custom board. The uart0 and its interrupt is working fine but while on uart1 I faced an strange issue. The uart1 is sending the data but interrupt handler is not calling while data reception. I have also confirmed the…
Sachin Verma
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