Re: [Simulavr-devel] VCD record 4x faster than need

[Thomas K]

Hi,

You have to set clock frequency in simulation with command line option 
-F! Default is 4MHz! And you will get at least a small difference: 
simulavr time unit is 1ns and period for 16MHz is 62.5ns!

cu, Thomas


Am 21.03.2016 um 10:08 schrieb Valber:
> Attached program send 'A' word an UART(F_CPU=16MHz, Baudrate=9600), 
> delay between Word 50ms.
>
> Start record, launch:
> simulavr -c vcd:tracein.txt:trace.vcd -f uart_clear_c_tx.elf -d atmega16
>
> After that, I view file in GTKWave and Pulseview(Sigrok) [attached image]
>
> Decoded Baudrate = 2400 = 9600/4
> And delay between Word 'A' ~=200 = 50*4
>
> Dirty Hack solved this problem, change in VCD file
> from
> $timescale 1ns $end
> to
> $timescale 250ps $end
>
>
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