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Cannot properly switch SPI MODE on ATSAME70Q21 I'm using SPI and the ASF library on a custom ATSAME70Q21 board. The following code shows how the SPI is being setup and programmed. The DAC device (DAC8851) is being... |
Wednesday, 14 June 2017 - 19:33 |
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Memory mapping to USB Mass Storage Device (device) I have a custom PCB with the ATSAME70Q21A microcontroller. After reading the quick start guide to the USB Mass Storage module, I am uncertain with respect to how the Mass Storage... |
Thursday, 24 November 2016 - 21:52 |
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Modifying SDR SDRAM core to use 512 Mbit memory ISSUE: There is source code for SDR SDRAM cores posted on the Internet; it is possible to download this Verilog/VHDL code, synthesize it, and use it in an FPGA. I've looked at... |
Sunday, 20 November 2011 - 22:09 |
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Repair of BGA - solder balls melted down via holes I've created a new prototype circuit board with 217-LFBGA (AT91SAM processor) and 54-VFBGA parts (SDRAM memory). Unfortunately, I've found that some of the through-hole vias were... |
Tuesday, 22 March 2011 - 03:33 |
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Setting up timer for ADC conversion trigger I've been working with the ATMEGA324P-20AU to read some data over SPI from five ADCs that are triggered (all at the same time) by a conversion pin. The conversion pin of each ADC... |
Tuesday, 18 January 2011 - 17:51 |
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Implementing ADC data capture system and DAC control loop I'm in the process of designing a data capture and feedback loop control system. The system is comprised of five AD7685 ADCs (http://www.analog.com/static/imp...) that will be... |
Friday, 14 January 2011 - 04:45 |
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Using AD7691 ADC to measure voltage drop across resistor Hello, From what I've read in the datasheet, the AD7691 ADC (http://www.analog.com/static/imp...) can digitize a voltage ranging between +/-VREF. A single-ended to differential... |
Wednesday, 3 November 2010 - 01:08 |
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Running user programs on startup Hello-- Before deploying one of my new AVR32 AP7001 systems, I added a script to the /etc/init.d directory to run another script situated in a root directory /programs. Here is... |
Wednesday, 20 January 2010 - 17:33 |
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Best way to update multiple bits in a PORTx register Hello-- I've recently designed a circuit board with an ATMEGA. The ATMEGA provides a calibration front-end for a research sensing system. Some of the port pins of this... |
Wednesday, 13 January 2010 - 05:32 |
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Decoding voltage from two's complement ADC output Hello-- I've recently designed, built, and tested an AVR32 embedded system for conducting research. The system has a FPGA and runs Linux. I am harvesting data from six Analog-to-... |
Sunday, 10 January 2010 - 04:18 |
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Connecting male pin headers together I own the NGW100 AVR32 evaluation kit from Atmel: https://www.avrfreaks.net/wiki/in... I've soldered male pin headers to the appropriate holes on this evaluation kit. I would like... |
Wednesday, 30 September 2009 - 05:55 |
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Interfacing AVR USART to AVR32 USART Is it possible to interface an AVR USART directly to the AVR32 USART port? I have a design where I would like to have an 8-bit AVR talk with the AVR32 over USART. Would I simply... |
Wednesday, 30 September 2009 - 05:48 |