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TCB0 ISR not firing on Tiny817
Hi there, I am getting started with the ATTiny817 on the Xplained Mini board and am having trouble getting the TCB interrupt to work. With reference to my code below, a breakpoint...
Saturday, 4 April 2020 - 23:06
atof() giving inconsistent results
Hi there, I have a project on the E70 where I am getting input from an external display over RS232 (USART) as a comma separated string, and would like to parse the values in...
Sunday, 22 March 2020 - 08:13
Missing data Using XDMAC to send and receive over USART
I am trying to send three bytes of data over USART (RS232) to a PanelPilot and receive three bytes on the same USART on the E70 using the XDMAC. To test my code I have...
Monday, 9 March 2020 - 03:22
E70 SPI transfer 24 bits using DMA
Hi there I am trying to interface the E70 with the AD5290 DAC by updating all 16 channels at regular intervals.   The serial protocol for this chip requires a total of 24...
Tuesday, 10 December 2019 - 23:30
SCB_CleanInvalidateDCache_by_Addr not available for E70/V71?
Hi there, Quick question, I can't seem to find the macro SCB_CleanInvalidateDCache_by_Addr() in core_cm7.h (or anywhere for that matter), although it is referenced in...
Saturday, 9 November 2019 - 00:40
Using USB CDC to control program flow on E70/V71
Hi all, I am trying to pass a string (possibly quite a long string) to the E70 using a COM port via the USB connection for the purpose of controlling program flow of the E70 from...
Monday, 28 October 2019 - 05:05
User Interface Development
Hi there, I have developed an embedded system with the SAM V71 and need help creating a USB interface and program for use with a PC, as this is something I know I will not be able...
Wednesday, 24 October 2018 - 07:37
Using XDMAC to write to serial terminal
I am having an issue with unusual behaviour when debugging an XDMAC transfer on the E70 Xplained board which I hope someone can help with.   I am trying to send a string of...
Friday, 7 September 2018 - 22:20
Capturing PWM Duty Cycle with SAM V71
Hi there, I am trying to measure a PWM signal through an optocoupler with the SAM V71 and I am having some problems.   First of all, the PWM signal I am measuring is an...
Monday, 13 August 2018 - 10:58
Unable to debug anything on SAM V71 Xplained board
Hi all, I've had a problem suddenly come up with my V71 Xplained board which has stumped me.   When I program the board with AS7 and try to debug nothing happens in that my...
Wednesday, 20 June 2018 - 11:59
SAM3S Power Supply Considerations
Hi there, I'm attempting a custom PCB with a SAM3S on it. The datasheet makes the following comment about power-up considerations: 5.2.2 VDDIO Versus VDDIN At power-up, VDDIO...
Thursday, 9 June 2016 - 10:53
Enabling and servicing TC interrupts on SAM
Hi there, I am trying to implement a timer counter interrupt in the SAMV71 (using the Xplained board) and having trouble making it hit the ISR. I am porting code from an AVR32 so...
Sunday, 10 April 2016 - 07:53

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