nickorlow/yayacemu
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

keypad working

Browse source
This commit is contained in:
Nicholas Orlowsky 2024-04-15 09:32:48 -05:00
parent 55adbcf90a
commit 4855bbc42d
Signed by: nickorlow
GPG key ID: 838827D8C4611687
10 changed files with 526 additions and 213 deletions
Download patch file Download diff file Expand all files Collapse all files

55
keypad.sv
View file

@ -2,13 +2,55 @@ module keypad(
input clk_in,
input wire [3:0] row,
output logic [3:0] col,
output [5:0] cur_press
output logic [15:0] keymap_out
);
logic [1:0] col_idx;
logic [15:0] keymap;
logic [15:0] keymap_db;
logic [15:0] keymap_db2;
/* old
assign keymap_out[0] = keymap[13];
assign keymap_out[1] = keymap[0];
assign keymap_out[2] = keymap[1];
assign keymap_out[3] = keymap[2];
assign keymap_out[4] = keymap[4];
assign keymap_out[5] = keymap[5];
assign keymap_out[6] = keymap[6];
assign keymap_out[7] = keymap[8];
assign keymap_out[8] = keymap[9];
assign keymap_out[9] = keymap[10];
assign cur_press = {clk_in, 1'b0, keymap[3:0]};
assign keymap_out[10] = keymap[3];
assign keymap_out[11] = keymap[7];
assign keymap_out[12] = keymap[11];
assign keymap_out[13] = keymap[15];
assign keymap_out[14] = keymap[12];
assign keymap_out[15] = keymap[14];
*/
//assign keymap_out = keymap;
assign keymap_out[1] = !keymap[1];
assign keymap_out[2] = !keymap[0];
assign keymap_out[3] = !keymap[2];
assign keymap_out[12] =!keymap[3];
assign keymap_out[4] = !keymap[5];
assign keymap_out[5] = !keymap[4];
assign keymap_out[6] = !keymap[6];
assign keymap_out[13] =!keymap[7]; //E
assign keymap_out[7] = !keymap[9];
assign keymap_out[8] = !keymap[8];
assign keymap_out[9] = !keymap[10];
assign keymap_out[14] =!keymap[11]; //F
assign keymap_out[10] =!keymap[13];
assign keymap_out[0] = !keymap[12]; //0
assign keymap_out[11] =!keymap[14];
assign keymap_out[15] =!keymap[15];// D
initial begin
col_idx = 0;
@ -18,12 +60,13 @@ module keypad(
always_ff @(posedge clk_in) begin
for(logic [2:0] i = 0; i < 4; i++) begin
keymap[(i*4)+col_idx] <= row[i[1:0]];
keymap_db[(i*4)+col_idx] <= row[i[1:0]];
end
keymap_db2 <= keymap_db;
keymap <= keymap_db2;
col[col_idx] <= 1;
col[col_idx+1] <= 0;
col_idx <= col_idx + 1;
col[col_idx == 3 ? 0 : col_idx +1] <= 0;
col_idx <= col_idx == 3 ? 0 : col_idx + 1;
end
endmodule