Questions tagged [atsamc21]
The atsamc21 tag has no usage guidance.
9
questions
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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 <...
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1answer
23 views
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 ...
0
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1answer
108 views
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 ...
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2answers
65 views
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 ...
2
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0answers
740 views
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 ...
0
votes
1answer
42 views
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 ...
2
votes
2answers
657 views
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....
1
vote
1answer
98 views
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 ...
1
vote
1answer
31 views
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 ...
