reduced number of warnings

Author: EvilLord666

fifo.v

@@ -25,9 +25,9 @@ module fifo #
 )
 (
     input wire  clk,
-    //input wire  enable,
+    // input wire  enable,
     input wire  clear,
-    output wire fifo_ready,
+    // output wire fifo_ready,
     input wire  push,
     input wire  pop,
     input wire  [DATA_WIDTH - 1:0] in_data,
@@ -60,7 +60,7 @@ module fifo #
         if (clear == 1'b1)
         begin
             fifo_state = INITIAL_STATE;
-            for(counter = 0; counter < FIFO_SIZE; counter = counter + 1)
+            for(counter = 0; counter < FIFO_SIZE; counter = counter + 16'h01)
                 fifo_data[counter] <= 0;
             position <= 0;
             data_count <= 0;    
@@ -111,8 +111,8 @@ module fifo #
                     if (data_count < FIFO_SIZE)
                     begin
                         fifo_data[position] <= in_data;
-                        position <= position + 1;    // position is an index of next item ...
-                        data_count <= data_count + 1;
+                        position <= position + 16'h01;    // position is an index of next item ...
+                        data_count <= data_count + 16'h01;
                         fifo_state <= PUSH_FINISHED;
                         popped_last_value <= 1'b0;
                         if (position == FIFO_SIZE - 1)
@@ -137,12 +137,12 @@ module fifo #
                     if (data_count > 0)
                     begin
                         buffer <= fifo_data[0];
-                        data_count <= data_count - 1;
+                        data_count <= data_count - 16'h01;
                         pushed_last_value <= 0;
-                        for(counter = 0; counter < FIFO_SIZE - 1; counter = counter + 1)
+                        for(counter = 0; counter < FIFO_SIZE - 1; counter = counter + 16'h01)
                             fifo_data[counter] <= fifo_data[counter + 1];
                         fifo_data[FIFO_SIZE - 1] <= 0;
-                        position <= position - 1;
+                        position <= position - 16'h01;
                         fifo_state <= POP_FINISHED;
                         pushed_last_value <= 1'b0;
                         if(position == 1)

quick_rs232.v

@@ -59,8 +59,7 @@ module quick_rs232 #(
     input wire [DEFAULT_BYTE_LEN-1:0] tx_data,           // data that should be send trough RS232
     input wire tx_data_ready,                            // required: setting to 1 when new data is ready to send
     output reg tx_data_copied,                           // short pulse means that data was copied _--_____--______--___
-    output reg tx_busy,                                  // tx notes that data is sending via RS232 or RS232 module awaiting flow-control synch
-    output reg [7:0] debug_led_bus
+    output reg tx_busy                                   // tx notes that data is sending via RS232 or RS232 module awaiting flow-control synch
 );
 
 localparam reg [3:0] IDLE_EXCHANGE_STATE = 1;
@@ -90,7 +89,7 @@ reg tx_data_parity;
 reg [DEFAULT_BYTE_LEN-1:0] rx_buffer;
 wire rx_data_buffer_full;
 reg [31:0] rx_bit_counter;
-reg [31:0] rx_stop_bit_counter_limit;
+// reg [31:0] rx_stop_bit_counter_limit;
 reg [31:0] rx_timeout;
 reg [3:0]  rx_data_bit_counter;
 reg rx_data_parity;
@@ -117,7 +116,7 @@ begin
         rx_byte_received <= 1'b0;
         rx_buffer <= 0;
         rx_bit_counter <= 0;
-        rx_stop_bit_counter_limit <= 0;
+        // rx_stop_bit_counter_limit <= 0;
         rx_data_bit_counter <= 0;
         rx_data_parity <= 1'b0;
         rx_err <= 1'b0;
@@ -126,7 +125,6 @@ begin
         j <= 0;
         TOTAL_RX_TIMEOUT <= 6400; // ~ 9600 bit/s
         rx_timeout <= 0;
-        debug_led_bus <= 8'b11111111;
     end
     else
     begin
@@ -213,7 +211,7 @@ begin
                     if (rx_bit_counter == TICKS_PER_UART_BIT)
                     begin
                         rx_bit_counter <= 0;
-                        rx_data_bit_counter <= rx_data_bit_counter + 1;
+                        rx_data_bit_counter <= rx_data_bit_counter + 4'b0001;
                     end
                 end
             end
@@ -419,7 +417,7 @@ begin
                 if (tx_bit_counter == TICKS_PER_UART_BIT)
                 begin
                     tx_bit_counter <= 0;
-                    tx_data_bit_counter <= tx_data_bit_counter + 1;
+                    tx_data_bit_counter <= tx_data_bit_counter + 4'b0001;
                 end
                 end
             end