EmbDev.net

Forum: FPGA, VHDL & Verilog is it possible for bcd to ascii module?


von John B. (Company: USF) (noitabrutsam)


Rate this post
useful
not useful
is it possible for bcd to ascii module?

if so, can you help me where to start?

von alex (Guest)


Rate this post
useful
not useful
1. Ensure that BCD is in range of borders 0...99
2. Per Byte: Byte to Hi/Lo nibble ( shift by 4 and with 0x0F for hi, and 
with 0x0F for lo nibble)
3. Per Nibble: ASCII = nibblevalue + 0x30

See also wiki

ASCII      char 0x30 = '0'

von Luke Wren (Guest)


Rate this post
useful
not useful
Something like
1
module bcd2ascii #(
2
    parameter N_DIGITS = ...
3
) (
4
    input wire [4*N_DIGITS-1:0] bcd_in,
5
    output reg [8*N_DIGITS-1:0] ascii_out
6
);
7
8
integer i;
9
10
always @ (*) begin
11
    for (i = 0; i < N_DIGITS; i = i + 1) begin
12
        ascii_out[i * 8 +: 8] = 8'h30 + bcd_in[4 * i +: 4];
13
    end
14
end
15
16
endmodule

Could be what you need. It would require some effort on your part to 
adapt this to your needs and make sure that it works. You didn't mention 
language, so I assumed Verilog.

von S. R. (svenska)


Rate this post
useful
not useful
John B. wrote:
> is it possible for bcd to ascii module?

Yes, it is possible.

John B. wrote:
> if so, can you help me where to start?

a) convert 4 bit BCD to binary (easy: use a table)
b) convert binary to ASCII digit (easy: add 0x30)

Repeat for every digit.

von ronit (Guest)


Rate this post
useful
not useful
what does this statement mean =(" parameter N_DIGITS = ...")
Can you please explain, it's a bit of an emergency

von Lothar M. (Company: Titel) (lkmiller) (Moderator)


Rate this post
useful
not useful
What about Google like "verilog parameter"?
Within seconds you find the explanation:
http://www.asic-world.com/verilog/para_modules1.html

von Harry (Guest)


Rate this post
useful
not useful
can anyone help me to wrie a multichannnel UART verilog code?

von Lothar M. (Company: Titel) (lkmiller) (Moderator)


Rate this post
useful
not useful
Harry wrote:
> can anyone help me to wrie a multichannnel UART verilog code?
Start a new thread for an new question!

Provide something with a particular problem. No one will do your entire 
homework.

Define more precisely what you mean with "multichannel UART".

Please log in before posting. Registration is free and takes only a minute.
Existing account
Do you have a Google/GoogleMail account? No registration required!
Log in with Google account
No account? Register here.