Questions tagged [avr32]
For questions specific to the Atmel AVR32 series of 32-bit microcontrollers.
16
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How to set up RS232 UART in Proteus?
I am having difficulties sending the correct message to the hyper terminal from ATmega32 micro controller. For some reason, the MAX232 chip is giving undesirable voltage levels. I want it to give ±15 ...
- 33
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AVR32 goes to unrecoverable exception when exiting interrupt routine
I'm using an ATUC128D3 microcontroller and have 5 switches connected to it. I have the GPIO interrupt configured to trigger on a falling edge and this works just fine.
It enters the interrupt and the ...
- 301
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I'm looking for the Windows-10 driver for the Atmel bootloader used in the Atmel UC3-A3 Xplained evaluation kit
I have a couple of Atmel boards called Atmel UC3-A3 Xplained
evaluation kit, and am trying to use them in a project.
I want to use the bootloader, which is apparently pre-installed on the AVR32 chip, ...
- 11
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352
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Unexpected JTAG ID 0x0ffffffe (expected 0x0202603f)
I have problem with upload program Flash for my AT33UC3A3256 Atmel. that what comes up when im trying to read JTAG ID:
Unable to enter programming mode. The read device ID does not match
the selected ...
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answer
313
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Options for debugging MCU that is freezing/crashing (AVR32)
I'm currently trying to figure out why it seems like the MCU is crashing/freezing.
I can recreate the crash/freezing almost every-time by doing the same procedure, and I have been looking through the ...
- 1,184
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84
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Can't program atmega32 interfaced with LM34
i want to read all temperature range of the LM34(-50 to +300) but i only can program single ended like this one, and i only can read from 0 to 50 F
but i can't program one like this(can't read two ...
- 25
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440
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How to configure an AVR32 as a USB CDC Device?
I am trying to configure an AVR32(UC3B0512) microcontroller so that it can appear as a Virtual COM Port to the PC. I followed the instructions in this application note, but could not get it working. I ...
- 31
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Atmel UC3A0512 microcontroller documentation
I started using this microcontroller but I am dealing with the lack of documentation. First of all this is the datasheet. It describes registers and their usage but not a workflow. Which one to set ...
- 101
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answer
928
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Correct SPI Configuration?
I'm still not entirely clear on TTL, so please, forgive my ignorance in this.
I have a sensor and a microcontroller. The sensor is a BMI055 Gyroscope and accelerometer. The microcontroller is the ...
user86234
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vote
2
answers
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Using internal pull-ups for TWI on AT32UC3B?
Does anyone know if it's possible to use the built-in pull-ups for TWI on the at32uc3b chips? I've been adding external pull-ups to my TWI circuits in the past because I couldn't find any concrete ...
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What do I need to start with AVR UC3 Microcontrollers?
I am just beginning to learn how to use microcontrollers, and I have decided I am going to learn on the UC3B 32-bit avr. I will also be learning C programming in the process. What do I need in terms ...
- 21
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1k
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How can I receive multiple bytes on SPI with CS being held low?
I have an FPGA which sends out a stream of bits over SPI communicating to 3 AD8403 daisy chained together. The FPGA keeps CS low, until 30 bits (2 address bits, 8 data bits x 3) have been transmitted,...
- 11.9k
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Unable to get bootloader working on custom PCB with AT32UC3L
I have designed a PCB for a client recently, everything is fine with the hardware and software (application is working as it is supposed to). Now we are facing the need to update the program inside ...
- 243
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1k
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Can a wrong crystal oscilator capacitor burn the MCU?
Short story:
I am using an Atmel AT32UC3C2512C MCU and I selected a 20MHz crystal oscillator for it and two NP0 10pF capacitors. I was in doubt between 10pF, 15pF or 22pF, so I decided to start with ...
- 4,313
1
vote
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answer
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AVR32 Drive Strength
The UC3C Datasheet doesn't provide a clear explanation about "drive strength", how it behaves and the side effects in projects. After fabricating my board I realized I placed a LED on a x1 strength ...
- 4,313
2
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answer
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AVR32 Internal regulator
I am not pretending to use this, but as a general curiosity, when the AT32UC3C2512C datasheet says in page 1259, Table 40-20, parameter Iout, that the internal 3.3V regulator has a 35mA DC output ...
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