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I understood that you want to do 6-bit DAC. right? If it is true.
Here is my explanation.
data = [1 1 1 0 0 0];
function analog=myDAC(digital)
% digital input must be 6 bit width in this case(MSB first).
% and suppose your analog output's maximum voltage is 5V it would be like that
%...
It is very simple.
Example:
if you have 50MHz master clock then 50,000,000 cycles of your master clock is 1 sec.
Here is tutorial.
f = 50MHz = 50,000,000.
T = 1/50,000,000 = 20 nanosec.
number_of_cycles = 1sec / 20 nanosec = 50,000,000 cycles.
same to 1ms
number_of_cycles = 1msec / 20 nanosec...
Actual length is 8, so you try to change Xk0 : OUT signed (7 downto 0));
Then there will be no error.
:D
---------- Post added at 13:33 ---------- Previous post was at 13:25 ----------
Actual length is 8, so you try to change Xk0 : OUT signed (7 downto 0));
Then there will be no error.
:D
You have to set these variables to some data types.
Example :
x=int8(x);
y=int8(y);
then
x0 = x(1) = 255; % first value of Cosinus;
y0 = y(1) = 0; % first value of Sinus;
and in 2^(-i) , i must be constant --> it is define how many times shift to the left in digital systems.
Try it...
a = [0 0 1 2 3];
x=0; % circular shift up or down. up when positive, down when negative, no shift when 0;
y=-1; % circular shift left or right. right when positive, left when negative, no shift when 0;
a=circshift(a,[x y]);
Try it...
in 4-FSK. you will send datas by 2 bits. 00,01,10 and 11.
therefore that combinations will switch f1,f2,f3,f4 frequencies. You have to choose that frequencies before use.
example:
f1 = 10KHz --> sends when current data is 00.
f2 = 20KHz --> sends when current data is 01.
f3 = 30KHz --> sends...
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