Questions tagged [atmel]

Atmel is the creator of microcontrollers like the AVR line (ATMega and ATtiny) and SAM devices. Arduino microcontrollers use Atmel's AVR line of devices.

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serial monitor error/crash

After typing C, microcontroller responds with # Next, I type k, microcontroller responds with #INFO: TWI master enabled Next, I type !, microcontroller responds with C after typing in the next ...
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Atmel Studio SAML21J SPI connection issue

I am new in the world of microcontrollers, so maybe I am just missing some basic detail. I am using an Atmel SAML21J board (as master) and for that I am trying to connect a Kionix sensor (as slave) ...
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SD card command reference, command for streaming data to SD

I am currently working on a device with ATSAME70Q21 what measures 144 channels of ADC values on an SD card (MCI interface). Each measurement takes up a 512Byte block data on the SD. I do not use a ...
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42 views

How to include paths for the C compiler in atmel studio?

I have a folder project and it consists of multiple folder and .c and .h files what is the best way to include them all without including the individual folders?
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ASF SAMD21G18 2x timers usage

im trying to use ASF to schedule repeated tasks. using TC4 and TC5: in atmel start both using generic clock generator 0 (48MHz). both are HAL:DRIVER:Timer driver init.c is generated automatically ...
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38 views

What QSPI chip is on ItsyBitsy M4 Express?

I'm trying to find out the name of the QSPI chip that is used on ItsyBitsy M4 Express boards. On the image below is very faded:
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51 views

Does Attiny13 pull a lot more current in sleep mode than Attiny85 or did I do something wrong?

First off here is the code I have tested on both Attiny13A and Attiny85V: ...
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45 views

AVR ISP not working, strange signal level [closed]

I can't read the chip ID of the ATMega16m1 MCU using a AVRISP mkII programmer. The ISP pins are connected directly to the MCU, the reset line has a 10k pullup to Vcc (3.3V). When measuring the ISP ...
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66 views

atmega328pb mcu gets bricked after uploading bootloader

i have a strange problem, maybe this post will be long, but i try to give all the details: i’ve designed a pcb with smd components, around the atmega328pb mcu. it uses an external 16mhz clock and has ...
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20 views

Atmel debugger: erase bootloader?

I have an ARM-M0+ (SAMD21G18). I have a project that has a bootloader and another with application. When I try to go to debugging I suspect the following: the ROM is erased application flashed ...
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28 views

Proteus Atmel EEPROM Simulation

Can somebody confirm me if Labcenter Proteus can simulate the EEPROM registers for the Arduino Atmel megaAVR ATmega328P, for the standard instructions EEPROM.put ...
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1answer
22 views

Atmel SAM C21 stuck in Reset_Handler

I was trying to implement the watchdog functionality using ASF in an SAMC21 xplained pro and after flashing the code the device started behaving oddly. If I try to run any code it looks like it is not ...
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33 views

Which pins should i use to connect watch crystal for powering Low Frequency Crystal Oscillator in ATmega328p?

If i want use a watch crystal(32KHz) with Low Frequency Crystal Oscillator of ATmega328p,Which pin should i connect the crystal to? Should i connect the crystal to XTAL1,XTAL2 pins of ATmega328p or ...
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26 views

Is 128KHz oscillator in ATmega same as Watch Dog Oscillator?

Where is the 128KHz oscillator located in ATmega328p? I am unable to find it on the ATmel data sheet ,Is it same as watch dog timer Oscillator? I am attaching the clock section from the ATmel ...
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58 views

SD card reader using SPI with Atmel SAM G55J

I have a custom board using an Atmel SAM G55J (ATSAMG55J19A-AU) and I'm trying to get the SD card reader to work - which is connected to SPI0. I'm using the SD/MMC ...
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1answer
57 views

Atmega168 USART RX Interrupt does not trigger

I have been trying to get the USART RX interrupt trigger working on my ATmega168A using the tutorial here (updating my registers as per the datasheet): Tutorials I have setup the system to use a ...
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44 views

I have tried serial communication code.İt is working in arduino ide but it doesn't working in atmel studio

I have found code of serial communication for attiny84.https://electronut.in/serial-communications-with-the-attiny84/ If I compile this code in Arduino Ide then this code is running.I see hello world ...
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69 views

Avrisp mkii not recognizing atmega 328p chips

I have three different sets of chips, the attiny85, 328p, 328p-au. Initially, the avrisp mkii, was programming the atmega328p, however now it is not recognizing this chip (i.e. 328p) or the 328p-au. ...
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95 views

SAM Timer counter / atmel ASF

I'm trying to implement function call after having timeroverflow or comparison of counter registers. Chip: SAM4E ...
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0answers
65 views

USB CDC device send response of first for second data

I'm working using atmel studio 7.0, the code which i'm using is USB Communication Device Class (CDC) for ATSAMD21. My application is to read the command from the host to the device and perform the ...
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1answer
111 views

ATSAMR21 sleep high current draw

I have an ATSAMR21B18-MZ210PA, which is an ATSAMR21E18 packaged with MX25L2006E flash. The SAMR21 is itself a SAMD21 paired with an AT86RF233 wireless module. So that's a SAMD21 + low power wireless + ...
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1answer
93 views

difference between CMSIS and ASF

im trying to make c++ project using atmel asf. the compiler have: ...
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2answers
144 views

Software needed for ATMEL ATMEGA8A-PU microcontroller in Ubuntu 18.04? [duplicate]

A few days ago I discovered a ATMEL ATMEGA8A-PU microcontroller and I wanted to write code on it . But I don't know what software to use in Ubuntu 18.04 for the microcontroller. Can I use the Arduino ...
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1answer
440 views

What's missing in this development board? [closed]

I came across an old development board with an ATMEL ATMEGA8A-PU . I am not an expert but I want to use this board. But something is missing in this board as seen in this photo:
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Problem with using Timer Counter interrupt on Atmel ARM

I'm using an ATSAM4E16C microcontroller and i need to get a 1 millisecond tick. I want to implement this using the timer counter module to trigger an interrupt. The clock frequency is 96 MHz, so using ...
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25 views

Nucleo F446RE - No SPI response while transmit is working as intended

I'm trying to read some registers of an Atmel AT86RF233 transceiver via SPI with a Nucleo F446RE development board. As stated on the title, whenever I send anything through MOSI, the transceiver doesn'...
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50 views

Optoisolator Not Switching

I’m working on a university project that involves switching a relay using an ILD213T optoisolator. The optoisolator is driven directly by an ATmega328p. I had calculated the required current limiting ...
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1answer
42 views

ADC startup time in AT91SAM7 - what is it?

I'm working with ADC in AT91SAM7S micro-controller. Apart from parameters like ADC clock frequency prescaler and 'sample and hold time' (that I'm familiar with), there is a parameter called 'Startup ...
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1answer
69 views

ATmega328p PIN reading

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47 views

Options for debugging MCU that is freezing/crashing (AVR32)

Im currently trying to figure out why it seems like a MCU is crashing/freezing. I can recreate the crash/freezing almost everytime by doing the same procedure, and i have been looking through the code ...
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1answer
55 views

SAMD09 Debug port connection issue

I have recently built a board using an ATSAMD09D14A-MUT, today it came the time to test it, however problems arose in a strangely annoying manner, when trying to connect to the device i get error 4109 ...
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6answers
831 views

Can an EEPROM be one-time-programmable?

I'm confused, and I hope you can help me figuring out, what I misunderstood. I am not an electronics engineer, so bear with me :) I have a chip, from the engine control unit of a Toyota Yaris Verso ...
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1answer
58 views

ATmega stopped working after changing CKDIV8 fuse

I have ATmega32U4. I connected it via SPI programmer and in Atmel Studio I have read their signature properly. It was working. Then I cleared and programmed CKDIV8 fuse. Clock was set to internal RC. ...
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88 views

Atmega88p with shift register 74hc595

I need to use a shift register to control multiple leds, but I need to control each one individually. The idea would be to send a buffer with the data, however I need to have several active leds and ...
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3answers
1k views

Increase memory of an ATmega32

I bought an ATmega32 IC recently, but now I found out the program I wrote in Atmel Studio reports an error due to an overflow of memory. It is 134.1% over the recommended memory of this chip. Are ...
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1answer
291 views

Atmel Chip not recognized as USB device. How to troubleshoot

I've soldered the AT90USB1286 Chip on a PCB like on this circuit: Imgur If I measure the pins, caps, resistors etc. with a multimeter, everything seems to be powered and fine. Reset button pulls to ...
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1answer
128 views

AT90USB162 not detected in windows

I have an AT90USB162, have it set up like this: I'm trying to program the chip using Atmel FLIP, but I can't because it's not detected. What could be the problem and how can I fix it?
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60 views

QT1070 inconsistent readings on touch pins

I recently transitioned my projects capacitive touch IC from using the MPR121 to the QT1070. I am getting irregular/inconsistent readings on one of the touch pins. In this particular situation, it ...
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1answer
89 views

AVR programming

This question might be asked somewhere, if so all references would be appreciated. Hello, I have programmed Atmel chip Atmega32U4 through USB. It is possible because it supports USB programming. I ...
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1answer
73 views

I2C write to Amis 30624 motor from Atsame54p20a in Atmel Studio

I have been trying to write to the amis 30624 stepper motor (http://www.onsemi.com/pub/Collateral/AMIS-30624-D.PDF) using I2C protocol but for some reason its giving me Receive ...
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2answers
3k views

atmel studio for mac

Is Atmel Studio compatible with Mac or Linux? It seems like there is only Windows support from the downlaods here: http://www.microchip.com/mplab/avr-support/atmel-studio-7.
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1answer
93 views

What command is sent from AVRDUDE to an AVR programmer for programming ATmega8

I have implemented an IoT ATMEL AVR Programmer based on protocol stk500, and I successfully connect with it wirelessly and program any ATMEL AVR Programmer through Arduino IDE, My Question is: I need ...
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2answers
467 views

ATMEL 24C02 EEPROM - Trouble understanding how the addressing works

I am currently writing a library for ATMEL's 24C series EEPROMs (not a programming question). The library works fine with a single EEPROM at the moment and I am trying to support multiple EEPROMs now, ...
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1answer
73 views

What is the difference between these two attiny44a parts?

I bought two Chirp plant watering alarms and I noticed that the attiny44a used are marked differently: atmel1722 and atmel1619. What is the meaning of the numbers? I cannot find this information in ...
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2answers
58 views

How to view the output of this microcontroller/FPGA?

I am using a motor controller board from an Asian company. It has an Atmel AT91 and Cyclone II chips on it. While I have basic experience in using some microcontrollers (PIC, Arduino) and know the ...
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3answers
80 views

I2C/TWI in ATMEGA - where is voltage source?

While reading about I2C/TWI protocol, i recognized as important part the ability to pull the signal down by any member of the communication. Thus pull-up resistors being very important here. There ...
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200 views

Atmel ice Connection Issue with “device signature”

I have recently got a atmel ice and am having trouble programming it. I have been trying to connect it a attiny2313-PU. I am confident that I have wired it up correctly. The problem is when I look for ...
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67 views

Data upload LED on SPI MOSI line

I'm attempting to make my own ISP programmer for an Atmega168-20PU. For the sake of learning I want to have an LED flash as bits are being flashed to the chip. If I use an SMD LED 0603 size, in series ...
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1answer
89 views

AT42QT2160 capacitive touch controller inverted Cs voltage - no touch detected

I'm trying to make my own development board for the AT42QT2160 Touch controller, since the original one was discontinued. I've designed the PCB with 8 buttons and a slider consisting of 8 sections. It'...
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2answers
74 views

Problem With Power Supply of ATMEGA328P and USART Peripheral

I am learning Atmega328p USART peripheral. I wrote a simple code to send and receive data from a computer through a FTDI chip. In my code I actually use two led for indication of working. 1st LED ...