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designing my own SAMD20J18 board
Hi!    I'm about to explore this uC. I have the xplained pro board working and I was able to blink a led. I've also ordered some D20J18 chips to try to make my own board...
Tuesday, 15 September 2015 - 03:16
HTTPS / SSL on Xmega?
I've made a prototype of a sensor that works with a XMEGA and a ESP8266. The project works fine, but now I have to transmit the data via HTTPS.   Is it possible to make a...
Wednesday, 2 September 2015 - 14:03
Why should any use malloc()?
Hello!   I was wandering if is it usefull to use malloc in a uC project. If I want to use some kind of list or table, malloc can help. But if I run out of ram on a uC project...
Monday, 31 August 2015 - 19:37
Charge and regulator li-ion battery circuit
Hello!   I'm trying to solve a problem of powering the board with a li-ion battery and be able to charge the battery without disconnecting it.    I found a dc-dc...
Thursday, 27 August 2015 - 14:07
USART enabled with disconnected cable block other uarts
Hello!   I'm working normally with 3 uarts: gsm module, GPS module and debug port. If the debug port is initialized and the cable is disconnected, the other UARTS stop...
Monday, 3 August 2015 - 13:44
Gyroscope export license? trouble buying outside USA, help!
Hello!   I'm trying to buy a gyroscope, accelerometer and magnetometer to a gps project. I placed an order in digikey and there is an issue if you want to buy a digital...
Thursday, 25 June 2015 - 18:08
Car ignition resets uC. Designing a uC PSU from CAR 12V
Hello!   I'm working on a PSU for a XMEGA and a GSM module. The module is SIM908 and the uC is ATXMEGA256A3BU. The sim hardware design guide suggest this psu:    ...
Monday, 6 April 2015 - 13:22
ASF and delay problems - the rest working
Hello! I'm having a problem with delay functions of ASF in ATXMEGA256A3BU.    All seems to be correctly configured. Serial port is working fine, timer/counter interrupts...
Monday, 16 March 2015 - 14:41
winbond spi flash for XMEGA project
Hi,    I need to log data into an external memory. I will transmit data with a GSM module, so when there is no data connection, I log the data in the flash and then I...
Friday, 23 January 2015 - 17:26
SAM D20 xplained pro - drivers and windows 8
Hello,    I have problems trying to program the board, Atmel studio doesn't recognize it. I assume that is a driver problem. I can't find any driver to download in Atmel...
Tuesday, 11 November 2014 - 23:49
atof not working (libm included)
Hi!   I've searching for an hour how to solve my problem. When I call "atof" function, the main build fails. I've included libm in linker -> libraries (alt F7) and also...
Friday, 7 November 2014 - 21:31
SIM900 Firmwares
Hello!   I need to upgrade the firmware of a sim900 module. The command AT+CNTP (network time protocol) is not implemented in the actual firmware.  I found a page with a...
Wednesday, 1 October 2014 - 22:41

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