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Copy pathOven_FSM.v
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341 lines (284 loc) · 10.3 KB
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`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company:
// Engineer:
//
// Create Date: 07.04.2024 21:59:38
// Design Name:
// Module Name: Oven_FSM
// Project Name:
// Target Devices:
// Tool Versions:
// Description:
//
// Dependencies:
//
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
//
//////////////////////////////////////////////////////////////////////////////////
module Oven_FSM(clk,rst,start_btn,pause_btn,door_open,set_temp,set_time,mode_sel,
fan,light,buzzer,temp,timer,hrod1,hrod2,hrod3,hrod4,high_grill);
//input-output variables
input clk,rst,start_btn,pause_btn,door_open;
input [7:0]set_temp,set_time;
input [1:0]mode_sel;
input high_grill;
output reg fan,light,buzzer;
output reg hrod1,hrod2,hrod3,hrod4;
output reg [7:0]temp;
output reg [7:0]timer;
//defining states of our Oven FSM
parameter Idle = 3'b000;
parameter Preheating = 3'b001;
parameter Cooking = 3'b010;
parameter Grilling = 3'b011;
parameter Baking = 3'b100;
parameter Pause = 3'b101;
reg [2:0]state,next_state;
reg flag,timer_start;
//initial value of variables
assign set_temp = 0;
//assign set_time = 0;
initial
begin
state = Idle;
next_state = Idle;
temp = 0;
flag = 0;
timer = 0;
end
//state register block
always @(posedge clk, posedge rst)
begin
if(rst)
begin
state <= Idle;
end
else
state <= next_state;
end
//next_state logic block
always @(*)
begin
case(state)
Idle : begin
if(start_btn && !door_open)
case(mode_sel)
2'b00 : next_state = Preheating;
2'b01 : next_state = Cooking;
2'b10 : next_state = Grilling;
2'b11 : next_state = Baking;
default : next_state = Idle;
endcase
else
next_state = Idle;
end
Preheating: begin
if (pause_btn)
next_state = Pause;
else
next_state = Preheating;
end
Cooking: begin
if (pause_btn)
next_state = Pause;
else if (timer == 0)
next_state = Idle;
else
next_state = Cooking;
end
Grilling: begin
if (pause_btn)
next_state = Pause;
else if (timer == 0)
next_state = Idle;
else
next_state = Grilling;
end
Baking: begin
if (pause_btn)
next_state = Pause;
else if (timer == 0)
next_state = Idle;
else
next_state = Baking;
end
Pause: begin
if (!pause_btn)
begin
timer_start = 1'b1;
case(mode_sel)
2'b00 : next_state = Preheating;
2'b01 : next_state = Cooking;
2'b10 : next_state = Grilling;
2'b11 : next_state = Baking;
default : next_state = Idle;
endcase
end
else
next_state = Pause;
end
default : next_state = Idle;
endcase
end
//output logic block
always @(state,timer,timer_start,flag)
begin
case(state)
Idle: begin
timer_start = 1'b0;
light = 1'b1;
buzzer = 1'b0;
fan = 1'b0;
hrod1 = 1'b0;
hrod2 = 1'b0;
hrod3 = 1'b0;
hrod4 = 1'b0;
end
Preheating: begin
temp = set_temp;
light = 1'b1;
buzzer = 1'b0;
fan = 1'b0;
hrod1 = 1'b0;
hrod2 = 1'b0;
hrod3 = 1'b1;
hrod4 = 1'b0;
end
Cooking: begin
if(flag)
begin
timer = timer;
flag = 1'b0;
timer_start = 1'b1;
end
else if(!timer_start)
begin
timer = set_time;
timer_start = 1'b1;
end
else
timer = timer;
temp = set_temp;
light = 1'b1;
hrod1 = 1'b0;
hrod2 = 1'b1;
hrod3 = 1'b1;
hrod4 = 1'b0;
if(timer == 0)
begin
buzzer = 1'b1;
fan = 1'b1;
end
else
begin
buzzer = 1'b0;
fan = 1'b0;
end
end
Grilling: begin
if(flag)
begin
timer = timer;
flag = 1'b0;
timer_start = 1'b1;
end
else if(high_grill && !timer_start)
begin
timer = set_time;
timer_start = 1'b1;
end
else if(!timer_start)
begin
timer = 8'b01011010;
timer_start = 1'b1;
end
else
timer = timer;
temp = set_temp;
light = 1'b1;
hrod1 = 1'b0;
hrod2 = 1'b1;
hrod3 = 1'b1;
hrod4 = 1'b0;
if(timer == 0)
begin
buzzer = 1'b1;
fan = 1'b1;
end
else
begin
buzzer = 1'b0;
fan = 1'b0;
end
end
Baking: begin
if(flag)
begin
timer = timer;
flag = 1'b0;
timer_start = 1'b1;
end
else if(!timer_start)
begin
timer = set_time;
timer_start = 1'b1;
end
else
timer = timer;
temp = set_temp;
light = 1'b1;
hrod1 = 1'b1;
hrod2 = 1'b1;
hrod3 = 1'b1;
hrod4 = 1'b1;
if(timer == 0)
begin
buzzer = 1'b1;
fan = 1'b1;
end
else
begin
buzzer = 1'b0;
fan = 1'b0;
end
end
Pause: begin
timer_start = 1'b0;
flag = 1'b1;
light = 1'b1;
buzzer = 1'b0;
fan = 1'b0;
hrod1 = 1'b0;
hrod2 = 1'b0;
hrod3 = 1'b0;
hrod4 = 1'b0;
end
default: begin
light = 1'b1;
buzzer = 1'b0;
fan = 1'b0;
hrod1 = 1'b0;
hrod2 = 1'b0;
hrod3 = 1'b0;
hrod4 = 1'b0;
end
endcase
end
//timer_mod t1(.clk(clk),.rst(rst),.en(en),.set_time(run_time),.timer(timer1));
//logic block
always @(posedge clk, posedge rst)
begin
if(rst)
timer <= 0;
else if (timer_start)
if(timer > 0)
timer <= timer - 1;
else
timer <= timer;
else
timer <= timer;
end
endmodule