Serial loading into an array (VHDL)

[REIGN_]

Is it possible to load data from a pin in a serial way and put it into an array in VHDL?

What i want to accomplish is for the data to be put through one pin and for each clock signal the data to be saved in a different cell of the array.

For example:

T1 -> Data_in : 10 to be put in Array(0,0)
T2 -> Data_in : 30 to be put in Array(0,1)
T3 -> Data_in : 25 to be put in Array(0,2)

So that in the end the array looks like this

Array {10, 30, 25}

The problem is that i want to use only one pin and not load the data parallel.

Thanks in advance

 

[kirill]

hi
use shift register on the entry, then load data to your array

 

[REIGN_]

Thank you very much for your reply.

Unfortunately what i want to do is take input data from one pin and store it in an array internally. I could use a shift register but my problem is not creating the input as well as storing the input in the array.

 

[vipinlal]

Get data from the pin in each clock cycle and put it in a array. This can be done by changing the index of the array using a counter. The counter value should increment at every clock cycle.

if(rising_edge(clk)) then

count <= count + 1;
array(count) <= data_from_pin;
if(count = array_size) then
count = 0;
end if;
end if;

 

[kirill]

you want to store 10, 30, 25 in one cell, 30 if it hex number is a 6 bits long value, if it dec 5 bits, so you memory will be 2^address X 6bit size. If you use hex, you should create 6 bit shift register, after 6 clock cycles register assert signal "ready to store". then array(address) <= data_from_shift_register