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Parallel controller reading all zero's
Hi All   I am trying to use the parallel capture mode on an SAM4SD32C micro controller and its reading zeros all the time. The parallel controller is supposed to send the...
Sunday, 28 November 2021 - 12:47
SAM4SD32C TWI1 write, writes additional byte.
Hi All   I am trying to get the TWI1 peripheral to work. The problem is that when i write the data into the TWI_THR (Transmit holding register) the start condition gets...
Sunday, 14 November 2021 - 04:11
Why can you no use bit manipulation on PORTx but you can on VPORTx
Hi All   Firstly sorry if this is a dumb question. I am trying to figure out why the datasheet of the ATMega4809 says that you cannot use bit manupulation instructions ...
Thursday, 11 November 2021 - 10:02
SAM4S32C Timer Maximum frequency
Hi All   I am learning the timer system of the SAM4S32C and i am running the TC0 timer as fast as it can go (i think) while it outputs the square wave on PINA0. On measuring...
Sunday, 7 November 2021 - 23:36
How to route timer toggle to output pin
I am using the SAM4s32C Xplained Pro board and I need to output a 48MHz clock to a pin to drive a camera. I have got the TC0 timer working with interrupts but if I use...
Sunday, 7 November 2021 - 01:48
Driving GPIO pins fast
Hi All   Someone once told me its dangerous to toggle pins really fast and never elaborated why. I've thought about this for a while but I am not sure why it will be...
Friday, 5 November 2021 - 20:56
ATMega4809 TWI start condition sends additional 8 clock signals
I am trying to read a simple i2C temperature sensor. I can write to the sensors registers no problem and I receive all the ACK's as expected. The problem comes in when I try to...
Sunday, 23 May 2021 - 09:04
FATFS overwriting data and writing duplicates
Hi All   I have a problem I cannot pinpoint with the use of FATFS (I think). The project goes like this:    -Read the time and date from a real time clock,...
Monday, 10 May 2021 - 21:52
Is TWI BAUD register allowed to be set to ZERO?
Hi All, I am using an ATMega4809 running at 10MHz to communicate with an i2c device. I have the protocol working and there are no issues however I realized when I slowed the F_CPU...
Monday, 12 April 2021 - 06:35
SD card to USB Bridge?
Hi all I cannot find an answer anywhere so I wonder if anyone could help. I am looking for an atmel ic that can bridge an SD card to USB. I have and SD card that has a data.csv...
Sunday, 7 March 2021 - 19:38
MCP73833 LI-ION Charger acting strange
Hi Guys   I am trying to get a MCP73833 working however it seems to be acting strange. I have two versions wired up identically however the PCB layouts are ...
Thursday, 8 October 2020 - 17:45
Watchdog set sequence confusion
Hi All   In the atmega328pb data sheet it gives a timed sequence to change the watchdog timer. There is one point i do not understand it seems as my watchdog generates resets...
Friday, 28 August 2020 - 05:15

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