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.
418
questions
0
votes
2answers
132 views
Read 8 serial ports at the same time with an Attiny
I'm building a MIDI merger, based on a Attiny (either 84 or 85).
How to read multiple serial ports at the same time (for example 8 RX inputs)?
I can't find the blog article anymore, but I think I ...
0
votes
1answer
78 views
How to make 1uA consumption on Attiny13a?
I'm measuring my standalone Attinty13a (internal 128kHz) current consumption with li-ion accumulator (3.7v, 220mAh). Here is my schema
and code:
...
0
votes
0answers
13 views
ATM90E32 Energy representation and calibration
Thanks to this forum I just understand how this ATM90E32 represents the energy data as [ CF ] but now I have a more kind of complex issue...
Now the energy registered by the ATM90E32 is not similar ...
0
votes
1answer
61 views
Do UART RX interrupts require support from the transmitter?
I'm trying to understand why I am seeing RX interrupts when tying RX to TX of my SAMR34 but not when I connect it to the transmitting device. The transmitting device notes the following restrictions:
...
2
votes
1answer
57 views
ATM90E32 total energy reading
I'm developing a simple power meter using the ATM90E32 from Microchip. For now, I can read all values: frequency, power factor, voltages, apparent power, etc.
Now the issue is with the energy, I need ...
-1
votes
0answers
33 views
How To interface eighe hc sr04 ultrasonic sensors with Atxmega256
I am new at xmega and i have to read eight ultrasonic data, i map to use PORTA pins interrupt, the eight sensors should be read individually from sensor 1 to sensor 8 in one scan, i saw some posts to ...
0
votes
1answer
80 views
UART read consistently missing half of the transmitted bytes
I have setup a simple UART test on my SAML21 and believe I must be misusing the library due to the behavior I'm seeing
...
1
vote
1answer
37 views
SAMG55 - bootloader tools
I'm trying to use the ROM bootloader on the SAMG55 as described in AT09002. The application note describes using a tool 'hex2fw.py'. Where can I get that and the config files it uses?
I found this ...
3
votes
1answer
175 views
Why I need capacitors on VCC? [duplicate]
I want to build my own dev board (mostly to understand some concepts), and I started from some schematics that I found on the internet, but I have some questions about this schematic:
Why do I need ...
0
votes
1answer
40 views
Potential causes of Atmel “system” failure after reflash with same binary
I'm working on a small "cartridge"-like subsystem which attaches to the main device via a 20-pin connector.
On the cartridge, there is an ATmega16a microcontroller and an AT45DB081D flash. I needed ...
1
vote
1answer
47 views
Help understanding table in SAM E54 Datasheet
I apologize if this isn't the right place to ask this question, but I'm having trouble interpreting a table in the SAM E54 datasheet.
I am trying to configure the size of the SmartEEPROM on an ...
0
votes
0answers
68 views
What scheduling should I choose for my program on a FreeRTOS system?
Not sure if it's the right place to ask but:
I have a project (a 2-player game) made in FreeRTOS. The game has 3 tasks (Game Render, Joystick Task and a PC Serial Communication).
Shared resources ...
1
vote
1answer
58 views
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 ...
0
votes
0answers
20 views
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) ...
0
votes
0answers
23 views
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 ...
2
votes
1answer
45 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?
0
votes
1answer
37 views
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 ...
0
votes
1answer
58 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:
0
votes
1answer
52 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:
...
0
votes
1answer
48 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 ...
0
votes
2answers
98 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 ...
0
votes
1answer
23 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 ...
0
votes
0answers
47 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 ...
0
votes
1answer
24 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 ...
0
votes
2answers
43 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
...
0
votes
1answer
28 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 ...
0
votes
0answers
65 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 ...
3
votes
1answer
65 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 ...
0
votes
0answers
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 ...
0
votes
1answer
73 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.
...
1
vote
1answer
113 views
SAM Timer counter / atmel ASF
I'm trying to implement function call after having timeroverflow or comparison of counter registers.
Chip: SAM4E
...
1
vote
0answers
85 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 ...
2
votes
1answer
128 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 + ...
0
votes
1answer
126 views
difference between CMSIS and ASF
im trying to make c++ project using atmel asf.
the compiler have:
...
0
votes
2answers
162 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 ...
2
votes
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:
0
votes
0answers
70 views
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 ...
0
votes
0answers
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'...
1
vote
1answer
56 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 ...
0
votes
1answer
75 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 ...
1
vote
1answer
71 views
0
votes
1answer
49 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 ...
1
vote
1answer
58 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 ...
4
votes
6answers
876 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 ...
0
votes
1answer
67 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. ...
0
votes
2answers
95 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 ...
1
vote
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 ...
2
votes
1answer
326 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 ...
0
votes
1answer
140 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?
0
votes
1answer
68 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 ...
