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Why PB0 must be setting pull-up mode when sample voltage at PA2,PA7 ?
  PORTB.PIN0CTRL =PORT_OPC_PULLUP_gc;     if PB0 not be set pull-up , the data which sample by PA2,PA7 will be error.   void SampleVoltageAndBoxTemp(uint8_t...
Thursday, 15 July 2021 - 08:28
How to store a struct with big-endian or little-endian with IAR?
typedef struct {   uint8_t  Cmd;   uint16_t VarStartAddr;     int16_t TideAvg;   int16_t TideRaw;   int32_t SensorOut;   int16_t WaterTemp...
Friday, 18 June 2021 - 01:23
a port from atmega323 to atxmega128a1,but why error?
When I run the code for a moment, it all stop at delay_ms(50). Why? and how to debug the error.
Tuesday, 18 May 2021 - 11:48
Why my freeRTOS port from atmega323 to atxmega128a1 can't work(source atachment)?
Thanks a lot ! Code attachment .
Sunday, 16 May 2021 - 15:10
about xmega128a1 rtc overflow period calculate?
I read AVR application note code(attachement.) I don't understand the RTC overflow calculation.   for internal 32k  oscillator  register period=1023  ...
Sunday, 16 May 2021 - 15:02
where can i download a freeRTOS port for xmega128a1 with IAR ?
Thanks!
Saturday, 15 May 2021 - 14:05
I have a freeRTOS-9.0.0 port for atmega323 . Do I need revise portmacro.s90 for xmega128a1?
portmacro.s90 is attached.   Need I revise portmacro.s90 from atmega323  to atxmega128a1?
Saturday, 15 May 2021 - 13:42
code size compile with IAR and WINAVR for xmega with same source code?
code size compile with IAR and WINAVR for xmega with same source code?
Saturday, 15 May 2021 - 13:33
Why xmega the top of stack is not the PC of return instruction when call? Pls look attachment picture. Thanks!
Thanks a lot!
Saturday, 15 May 2021 - 08:20
XMEGA-Top of STACK!=(PC+n),Why?
https://bbs.21ic.com/icview-3132...   sorry,my previous  expression maybe confused,my real question why the (SP->)RAM not equal to PC+2(or PC+1)  when the call...
Wednesday, 12 May 2021 - 09:29