|  |  | @ -12,7 +12,8 @@ module top (input CLK, output LED1, LED2, LED3, LED4, LED5, | 
			
		
	
		
		
			
				
					
					|  |  |  |   //reg [7:0] I2C_TX;   //  TRANSMITTED TO MASTER |  |  |  |   //reg [7:0] I2C_TX;   //  TRANSMITTED TO MASTER | 
			
		
	
		
		
			
				
					
					|  |  |  |   wire [7:0] I2C_TX; |  |  |  |   wire [7:0] I2C_TX; | 
			
		
	
		
		
			
				
					
					|  |  |  |   reg [7:0] I2C_TX_DESC; |  |  |  |   reg [7:0] I2C_TX_DESC; | 
			
		
	
		
		
			
				
					
					|  |  |  |   //reg [7:0] I2C_TX_REPORT; |  |  |  |   reg [7:0] I2C_TX_REPORT; | 
			
				
				
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |   assign I2C_TX = (I2C_TX_DESC & I2C_OUT_DESC_MASK) | (I2C_TX_REPORT & (~I2C_OUT_DESC_MASK)); | 
			
		
	
		
		
			
				
					
					|  |  |  |   wire [7:0] I2C_RX;  //  RECEIVED FROM MASTER |  |  |  |   wire [7:0] I2C_RX;  //  RECEIVED FROM MASTER | 
			
		
	
		
		
			
				
					
					|  |  |  |   wire I2C_TRANS, I2C_READ, I2C_ACK, I2C_ACK_MSTR_CTRL, I2C_WR; |  |  |  |   wire I2C_TRANS, I2C_READ, I2C_ACK, I2C_ACK_MSTR_CTRL, I2C_WR; | 
			
		
	
		
		
			
				
					
					|  |  |  |   wire [7:0] I2C_COUNTER; |  |  |  |   wire [7:0] I2C_COUNTER; | 
			
		
	
	
		
		
			
				
					|  |  | @ -31,26 +32,14 @@ module top (input CLK, output LED1, LED2, LED3, LED4, LED5, | 
			
		
	
		
		
			
				
					
					|  |  |  |   wire [7:0] kbd_report [6:0]; |  |  |  |   wire [7:0] kbd_report [6:0]; | 
			
		
	
		
		
			
				
					
					|  |  |  |   wire ISR; |  |  |  |   wire ISR; | 
			
		
	
		
		
			
				
					
					|  |  |  |   reg INT = 1;              //  INTERRUPT LINE TO HOST |  |  |  |   reg INT = 1;              //  INTERRUPT LINE TO HOST | 
			
		
	
		
		
			
				
					
					|  |  |  |   reg [19:0] int_tmr; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |   reg KBD_FREEZE = 1;       //  LOGIC REG FOR BLOCK KBD ACTIVITY WHEN I2C IS WORKING |  |  |  |   reg KBD_FREEZE = 1;       //  LOGIC REG FOR BLOCK KBD ACTIVITY WHEN I2C IS WORKING | 
			
		
	
		
		
			
				
					
					|  |  |  |   //reg IS_EMPTY_REPORT = 0;  //  REGISTER FOR CORRECT START (HOST MUST REQUEST EMPTY REGISTER AFTER INTERRUPT. THEN INTERRRUPT SET TO 1) |  |  |  |   //reg IS_EMPTY_REPORT = 0;  //  REGISTER FOR CORRECT START (HOST MUST REQUEST EMPTY REGISTER AFTER INTERRUPT. THEN INTERRRUPT SET TO 1) | 
			
		
	
		
		
			
				
					
					|  |  |  |   matrix_kbd KEYBOARD (CLK, RESET, 0 /*KBD_FREEZE*/, KBD_ROWS, KBD_COLUMNS, kbd_report[0], kbd_report[1], kbd_report[2], kbd_report[3], kbd_report[4], kbd_report[5], kbd_report[6], ISR); |  |  |  |   matrix_kbd KEYBOARD (CLK, RESET, 0 /*KBD_FREEZE*/, KBD_ROWS, KBD_COLUMNS, kbd_report[0], kbd_report[1], kbd_report[2], kbd_report[3], kbd_report[4], kbd_report[5], kbd_report[6], ISR); | 
			
		
	
		
		
			
				
					
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					|  |  |  |   descriptors I2C_HID_DESC (CLK, RESET, I2C_WR, I2C_OUTPUT_TYPE[1:0], I2C_COUNTER, I2C_TX_DESC/*, kbd_report*/); |  |  |  |   descriptors I2C_HID_DESC (CLK, RESET, I2C_WR, I2C_OUTPUT_TYPE[1:0], I2C_COUNTER, I2C_TX_DESC/*, kbd_report*/); | 
			
		
	
		
		
			
				
					
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					|  |  |  |   //reg [7:0] ring_report [(8*8-1):0]; |  |  |  |   parameter MAX_INPUT_LEN = 10; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |   reg [7:0] init_ram_cnt; |  |  |  |   reg [7:0] I2C_INPUT_DATA [MAX_INPUT_LEN:0]; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |   reg [3:0] ring_wr, ring_rd; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |   reg [3:0] wr_cnt; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |   reg report_wr_en; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |   reg [7:0] report_data_wadr, report_data_radr, report_data_wr; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |   wire [7:0] report_data_rd; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |   ram REPORT_DATA (CLK, report_wr_en, report_data_wadr, report_data_wr, report_data_radr, report_data_rd); |  |  |  |  | 
			
		
	
		
		
			
				
					
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					|  |  |  |   assign I2C_TX = (I2C_TX_DESC & I2C_OUT_DESC_MASK) | (/*I2C_TX_REPORT*/report_data_rd & (~I2C_OUT_DESC_MASK)); |  |  |  |  | 
			
		
	
		
		
			
				
					
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					|  |  |  |   //parameter MAX_INPUT_LEN = 10; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |   //reg [7:0] I2C_INPUT_DATA [MAX_INPUT_LEN:0]; |  |  |  |  | 
			
		
	
		
		
	
		
		
	
		
		
			
				
					
					|  |  |  |   reg [7:0] temp_output_report; |  |  |  |   reg [7:0] temp_output_report; | 
			
		
	
		
		
			
				
					
					|  |  |  |   reg [3:0] i2c_input_data_type;  //  0 - UNKNOWN, 1 - I2C_HID_DESC_REQUEST, 2 - HID_REPORT_DESC_REQUEST, 3 - INPUT_REPORT_REQUEST, 4 - OUTPUT_REPORT_SET |  |  |  |   reg [3:0] i2c_input_data_type;  //  0 - UNKNOWN, 1 - I2C_HID_DESC_REQUEST, 2 - HID_REPORT_DESC_REQUEST, 3 - INPUT_REPORT_REQUEST, 4 - OUTPUT_REPORT_SET | 
			
		
	
		
		
			
				
					
					|  |  |  |                                   //  5 - RESET, 6 - GET_INPUT_REPORT, 7 - SET_OUTPUT_REPORT |  |  |  |                                   //  5 - RESET, 6 - GET_INPUT_REPORT, 7 - SET_OUTPUT_REPORT | 
			
		
	
	
		
		
			
				
					|  |  | @ -59,6 +48,9 @@ module top (input CLK, output LED1, LED2, LED3, LED4, LED5, | 
			
		
	
		
		
			
				
					
					|  |  |  |   reg [7:0] I2C_OUT_DESC_MASK = 0; |  |  |  |   reg [7:0] I2C_OUT_DESC_MASK = 0; | 
			
		
	
		
		
			
				
					
					|  |  |  |   reg [7:0] KBD_LED_STATUS = 0; |  |  |  |   reg [7:0] KBD_LED_STATUS = 0; | 
			
		
	
		
		
			
				
					
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					|  |  |  |  |  |  |  |   reg [7:0] ring_report [(8*8-1):0]; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |   reg [2:0] ring_wr, ring_rd; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |   reg [2:0] wr_cnt; | 
			
		
	
		
		
			
				
					
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					|  |  |  |   reg last_wr = 0, last_trans = 0, last_uart_active = 0, last_isr = 0, uart_double_ff = 0; |  |  |  |   reg last_wr = 0, last_trans = 0, last_uart_active = 0, last_isr = 0, uart_double_ff = 0; | 
			
		
	
		
		
			
				
					
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					|  |  | @ -67,68 +59,26 @@ module top (input CLK, output LED1, LED2, LED3, LED4, LED5, | 
			
		
	
		
		
			
				
					
					|  |  |  |     //  RESET LOGIC |  |  |  |     //  RESET LOGIC | 
			
		
	
		
		
			
				
					
					|  |  |  |     rststate <= rststate + !RESET; |  |  |  |     rststate <= rststate + !RESET; | 
			
		
	
		
		
			
				
					
					|  |  |  |     if (RESET == 0) begin |  |  |  |     if (RESET == 0) begin | 
			
		
	
		
		
			
				
					
					|  |  |  |       I2C_OUTPUT_TYPE = 3;//0; |  |  |  |       I2C_OUTPUT_TYPE = 0; | 
			
				
				
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |       I2C_OUT_DESC_MASK = 0; |  |  |  |       I2C_OUT_DESC_MASK = 0; | 
			
		
	
		
		
			
				
					
					|  |  |  |       KBD_LED_STATUS = 5;     //  BIT 0 - NUM LOCK, BIT 1 - CAPS LOCK, BIT 2 - SCROOL LOCK |  |  |  |       KBD_LED_STATUS = 7;     //  BIT 0 - NUM LOCK, BIT 1 - CAPS LOCK, BIT 2 - SCROOL LOCK | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |       uart_double_ff = 0; last_trans = 0; last_uart_active = 0; last_isr = 0; |  |  |  |  | 
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |       I2C_INPUT_LEN = 0; |  |  |  |       I2C_INPUT_LEN = 0; | 
			
		
	
		
		
			
				
					
					|  |  |  |       INT = 1;  int_tmr = 0; |  |  |  |       INT = 0; | 
			
				
				
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |       UART_WR = 0; |  |  |  |       UART_WR = 0; | 
			
		
	
		
		
			
				
					
					|  |  |  |       ring_wr = 0;      ring_rd = 15;      wr_cnt = 0; |  |  |  |       //KBD_FREEZE = 1; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |       init_ram_cnt = 0; |  |  |  |       //IS_EMPTY_REPORT = 0; | 
			
				
				
			
		
	
		
		
	
		
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |       ring_wr = 0; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |       ring_rd = 0; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |       wr_cnt = 0; | 
			
		
	
		
		
			
				
					
					|  |  |  |     end |  |  |  |     end | 
			
		
	
		
		
			
				
					
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					|  |  |  |     //  NOT RESET MODE LOGIC |  |  |  |     //  NOT RESET MODE LOGIC | 
			
		
	
		
		
			
				
					
					|  |  |  |     else  begin |  |  |  |     else  begin | 
			
		
	
		
		
			
				
					
					|  |  |  |       if (init_ram_cnt < 170)  begin |  |  |  |       if ((last_wr == 0) && (I2C_WR == 1))  begin //  I2C NEW BYTE TX/RX | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |         report_wr_en = 1; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         if (init_ram_cnt < 10) |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |           report_data_wadr = 0; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         else |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |           report_data_wadr = init_ram_cnt - 10; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         report_data_wr = 0;//report_data_adr + 1; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         init_ram_cnt = init_ram_cnt + 1; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |       end |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |       else if (init_ram_cnt == 170) begin |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         report_wr_en = 0; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         init_ram_cnt = init_ram_cnt + 1; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |       end |  |  |  |  | 
			
		
	
		
		
			
				
					
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					|  |  |  |       else if ((last_isr == 0) && (ISR == 1)/* && (INT == 1)*/) begin  //  INTERRUPT FROM KEYBOARD |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         if ((ring_wr + 1) != ring_rd) |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |           ring_wr = ring_wr + 1; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         report_wr_en = 1; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         report_data_wadr = ring_wr * 10; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         report_data_wr = 10;//kbd_report [0]; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         wr_cnt = 1; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         INT = 0; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         I2C_OUTPUT_TYPE = 3; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         I2C_OUT_DESC_MASK = 8'h00; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         last_isr = ISR; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |       end |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |       else if ((last_isr == 1) && (ISR == 0)) |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         last_isr = ISR; |  |  |  |  | 
			
		
	
		
		
			
				
					
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					|  |  |  |       else if (wr_cnt != 0) begin |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         if (wr_cnt == 10)  begin |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |           wr_cnt = 0; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |           report_wr_en = 0; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         end |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         else  begin |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |           report_data_wadr = ring_wr * 10 + wr_cnt; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |           if ((wr_cnt == 1) || (wr_cnt == 3)) |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             report_data_wr = 0; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |           else if (wr_cnt == 2) |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             report_data_wr = kbd_report [wr_cnt - 2]; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |           else |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             report_data_wr = kbd_report [wr_cnt - 3]; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |           wr_cnt = wr_cnt + 1; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         end |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |       end |  |  |  |  | 
			
		
	
		
		
			
				
					
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					|  |  |  |       else if ((last_wr == 0) && (I2C_WR == 1))  begin //  I2C NEW BYTE TX/RX |  |  |  |  | 
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |         I2C_INPUT_LEN = I2C_COUNTER - 1; |  |  |  |         I2C_INPUT_LEN = I2C_COUNTER - 1; | 
			
		
	
		
		
			
				
					
					|  |  |  |         if (I2C_READ == 0)  begin //  I2C_FROM_HOST |  |  |  |         if (I2C_READ == 0)  begin | 
			
				
				
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           /*if (I2C_COUNTER < (MAX_INPUT_LEN + 2)) | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             I2C_INPUT_DATA[I2C_COUNTER - 2] <= I2C_RX;*/ | 
			
		
	
		
		
			
				
					
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					|  |  |  |           if (I2C_COUNTER == 2) begin |  |  |  |           if (I2C_COUNTER == 2) begin | 
			
		
	
		
		
			
				
					
					|  |  |  |             if ((I2C_RX > 5) || (I2C_RX < 1)) |  |  |  |             if ((I2C_RX > 5) || (I2C_RX < 1)) | 
			
		
	
	
		
		
			
				
					|  |  | @ -166,55 +116,39 @@ module top (input CLK, output LED1, LED2, LED3, LED4, LED5, | 
			
		
	
		
		
			
				
					
					|  |  |  |           end |  |  |  |           end | 
			
		
	
		
		
			
				
					
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 | 
			
		
	
		
		
			
				
					
					|  |  |  |         end |  |  |  |         end | 
			
		
	
		
		
			
				
					
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 |  |  |  |         else  begin | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |         else  begin //  I2C_TO_HOST |  |  |  |  | 
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |           if (I2C_OUTPUT_TYPE == 3) begin |  |  |  |           if (I2C_OUTPUT_TYPE == 3) begin | 
			
		
	
		
		
			
				
					
					|  |  |  |             //if ((I2C_COUNTER < 2) || (I2C_COUNTER > (2 + 10 - 1))) |  |  |  |             if ((I2C_COUNTER < 2) || (I2C_COUNTER > (2 + 10 - 1))) | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |             //  I2C_TX_REPORT <= 0; |  |  |  |               I2C_TX_REPORT <= 0; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |             /*else */if (I2C_COUNTER == 2)  begin |  |  |  |             else if (I2C_COUNTER == 2) | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |               if (ring_rd != ring_wr) |  |  |  |               I2C_TX_REPORT <= 10; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |                 ring_rd = ring_rd + 1; |  |  |  |             else if ((I2C_COUNTER == 3) || (I2C_COUNTER == 5)) | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |               report_data_radr = ring_rd * 10; |  |  |  |               I2C_TX_REPORT <= 0; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |             end |  |  |  |             else if (I2C_COUNTER == 4) | 
			
				
				
			
		
	
		
		
	
		
		
	
		
		
	
		
		
	
		
		
	
		
		
	
		
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |               I2C_TX_REPORT <= kbd_report[0]; | 
			
		
	
		
		
			
				
					
					|  |  |  |             else |  |  |  |             else | 
			
		
	
		
		
			
				
					
					|  |  |  |               report_data_radr = report_data_radr + 1; |  |  |  |               I2C_TX_REPORT <= kbd_report[I2C_COUNTER - 5]; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |             //else if (I2C_COUNTER == 2) |  |  |  |               //I2C_TX_REPORT <= kbd_report[ (8 * (I2C_COUNTER - 4) + 7) : (8 * (I2C_COUNTER - 4) + 0) ]; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |             //  I2C_TX_REPORT <= 10; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             //else if ((I2C_COUNTER == 3) || (I2C_COUNTER == 5))  begin |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             //  I2C_TX_REPORT <= 0; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             //  if (ring_rd != ring_wr) |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             //    ring_rd = ring_rd + 1; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             //  report_data_radr = ring_rd * 10; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             //end |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             /*else if (I2C_COUNTER == 4) |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |               I2C_TX_REPORT <= kbd_report[0];*/ |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             //else  begin |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             //  I2C_TX_REPORT = report_data_rd; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             //  report_data_radr = report_data_radr + 1; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |               //I2C_TX_REPORT <= kbd_report[I2C_COUNTER - 5]; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             //end |  |  |  |  | 
			
		
	
		
		
	
		
		
	
		
		
			
				
					
					|  |  |  |           end |  |  |  |           end | 
			
		
	
		
		
			
				
					
					|  |  |  |           //else |  |  |  |           else | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |           //  I2C_TX_REPORT <= 0; |  |  |  |             I2C_TX_REPORT <= 0; | 
			
				
				
			
		
	
		
		
	
		
		
	
		
		
			
				
					
					|  |  |  |         end |  |  |  |         end | 
			
		
	
		
		
			
				
					
					|  |  |  |         last_wr = I2C_WR; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |       end  //  I2C NEW BYTE TX/RX - END |  |  |  |       end  //  I2C NEW BYTE TX/RX - END | 
			
		
	
		
		
			
				
					
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					|  |  |  |       else if ((last_wr == 1) && (I2C_WR == 0))  begin  //  I2C_NEW_BYTE_NEGEDGE_FOR_UART |  |  |  |       else if ((last_wr == 1) && (I2C_WR == 0))  begin  //  I2C_NEW_BYTE_NEGEDGE_FOR_UART | 
			
		
	
		
		
			
				
					
					|  |  |  |         UART_WR = 1; |  |  |  |         UART_WR <= 1; | 
			
				
				
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |         if (I2C_READ == 0) |  |  |  |         if (I2C_READ == 0) | 
			
		
	
		
		
			
				
					
					|  |  |  |           UART_TX_DATA = I2C_RX; |  |  |  |           UART_TX_DATA <= I2C_RX; | 
			
				
				
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |         else |  |  |  |         else | 
			
		
	
		
		
			
				
					
					|  |  |  |           UART_TX_DATA = I2C_TX; |  |  |  |           UART_TX_DATA <= I2C_TX; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |         last_wr = I2C_WR; |  |  |  |  | 
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |       end  //  I2C_NEW_BYTE_NEGEDGE_FOR_UART - END |  |  |  |       end  //  I2C_NEW_BYTE_NEGEDGE_FOR_UART - END | 
			
		
	
		
		
			
				
					
					|  |  |  | 
 |  |  |  | 
 | 
			
		
	
		
		
			
				
					
					|  |  |  |       else if ((last_trans == 0) && (I2C_TRANS == 1)) begin //  I2C_START_CONDITION OR REPEAT START (UART FF) |  |  |  |       else if ((last_trans == 0) && (I2C_TRANS == 1)) begin //  I2C_START_CONDITION OR REPEAT START (UART FF) | 
			
		
	
		
		
			
				
					
					|  |  |  |         i2c_input_data_type = 0;  //  UNKNOWN DATA IN |  |  |  |         i2c_input_data_type = 0;  //  UNKNOWN DATA IN | 
			
		
	
		
		
			
				
					
					|  |  |  |         uart_double_ff = 1; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         UART_TX_DATA = 8'hFF; |  |  |  |         UART_TX_DATA = 8'hFF; | 
			
		
	
		
		
			
				
					
					|  |  |  |         UART_WR = 1; |  |  |  |         UART_WR = 1; | 
			
		
	
		
		
			
				
					
					|  |  |  |         last_trans = I2C_TRANS; |  |  |  |         uart_double_ff = 1; | 
			
				
				
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |         KBD_FREEZE = 0; | 
			
		
	
		
		
			
				
					
					|  |  |  |       end //  I2C_START_CONDITION (UART FF) - END |  |  |  |       end //  I2C_START_CONDITION (UART FF) - END | 
			
		
	
		
		
			
				
					
					|  |  |  | 
 |  |  |  | 
 | 
			
		
	
		
		
			
				
					
					|  |  |  |       else if ((last_trans == 1) && (I2C_TRANS == 0)) begin //  I2C_STOP CONDITION (OR REPEAT START DETECTED) |  |  |  |       else if ((last_trans == 1) && (I2C_TRANS == 0)) begin //  I2C_STOP CONDITION (OR REPEAT START DETECTED) | 
			
		
	
	
		
		
			
				
					|  |  | @ -230,49 +164,82 @@ module top (input CLK, output LED1, LED2, LED3, LED4, LED5, | 
			
		
	
		
		
			
				
					
					|  |  |  |             I2C_OUTPUT_TYPE = 3; |  |  |  |             I2C_OUTPUT_TYPE = 3; | 
			
		
	
		
		
			
				
					
					|  |  |  |           else if (i2c_input_data_type == 5) |  |  |  |           else if (i2c_input_data_type == 5) | 
			
		
	
		
		
			
				
					
					|  |  |  |             rststate <= 4'h0;   //  RESET COMMAND |  |  |  |             rststate <= 4'h0;   //  RESET COMMAND | 
			
		
	
		
		
			
				
					
					|  |  |  | 
 |  |  |  |           /*if (I2C_INPUT_LEN == 0) | 
			
				
				
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             KBD_FREEZE <= 0; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           else if (I2C_INPUT_LEN == 2) begin | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             if ((I2C_INPUT_DATA[0] == 1) && (I2C_INPUT_DATA[1] == 0))       //  I2C_HID_DESC_REQUEST | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |               I2C_OUTPUT_TYPE = 1; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             else if ((I2C_INPUT_DATA[0] == 2) && (I2C_INPUT_DATA[1] == 0))  //  HID REPORT DESC REQUEST | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |               I2C_OUTPUT_TYPE = 2; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             else if ((I2C_INPUT_DATA[0] == 3) && (I2C_INPUT_DATA[1] == 0))  //  INPUT REPORT REQUEST (ADR) | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |               I2C_OUTPUT_TYPE = 3; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             //else | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             //  I2C_OUTPUT_TYPE = 0;  // | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           end | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           else if (I2C_INPUT_LEN == 5)  begin //  OUTPUT REPORT SET (LEDS) - WRITE TO OUT ADR | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             if ((I2C_INPUT_DATA[0] == 4) && (I2C_INPUT_DATA[1] == 0) && (I2C_INPUT_DATA[2] == 1) && (I2C_INPUT_DATA[3] == 0))  begin | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |               KBD_LED_STATUS <= I2C_INPUT_DATA[4]; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |               KBD_FREEZE <= 0; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             end | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             //else | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             //  I2C_OUTPUT_TYPE = 0;  // | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           end | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           else if (I2C_INPUT_LEN == 6)  begin   //  INPUT REPORT REQUEST (KBD PRESS INFO) | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             if ((I2C_INPUT_DATA[0] == 5) && (I2C_INPUT_DATA[1] == 0) && (I2C_INPUT_DATA[2] == 16) && (I2C_INPUT_DATA[3] == 2) && (I2C_INPUT_DATA[4] == 6) && (I2C_INPUT_DATA[5] == 0)) | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |               I2C_OUTPUT_TYPE = 3; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             //else | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             //  I2C_OUTPUT_TYPE = 0;  // | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           end | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           else if (I2C_INPUT_LEN == 9)  begin //  OUTPUT REPORT SET (LEDS) - WRITE BY CMD | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             if ((I2C_INPUT_DATA[0] == 5) && (I2C_INPUT_DATA[1] == 0) && (I2C_INPUT_DATA[2] == 32) && (I2C_INPUT_DATA[3] == 3)  && (I2C_INPUT_DATA[4] == 6) && (I2C_INPUT_DATA[5] == 0) /*&& (I2C_INPUT_DATA[6] == 1) && (I2C_INPUT_DATA[7] == 0)*//*)  begin | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |               KBD_LED_STATUS <= I2C_INPUT_DATA[8]; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |               KBD_FREEZE <= 0; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             end | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             //else | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             //  I2C_OUTPUT_TYPE = 0;  // | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           end | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           else if (I2C_INPUT_LEN == 4)  begin | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |             if ((I2C_INPUT_DATA[0] == 5) && (I2C_INPUT_DATA[1] == 0) && (I2C_INPUT_DATA[2] == 0) && (I2C_INPUT_DATA[3] == 1)) | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |               rststate <= 4'h0;   //  RESET COMMAND | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           end */ | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           //else | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           //  I2C_OUTPUT_TYPE = 0;  // | 
			
		
	
		
		
			
				
					
					|  |  |  |           if ((I2C_OUTPUT_TYPE == 1) || (I2C_OUTPUT_TYPE == 2)) |  |  |  |           if ((I2C_OUTPUT_TYPE == 1) || (I2C_OUTPUT_TYPE == 2)) | 
			
		
	
		
		
			
				
					
					|  |  |  |             I2C_OUT_DESC_MASK = 8'hFF; |  |  |  |             I2C_OUT_DESC_MASK = 8'hFF; | 
			
		
	
		
		
			
				
					
					|  |  |  |           else |  |  |  |           else | 
			
		
	
		
		
			
				
					
					|  |  |  |             I2C_OUT_DESC_MASK = 8'h00; |  |  |  |             I2C_OUT_DESC_MASK = 8'h00; | 
			
		
	
		
		
			
				
					
					|  |  |  |         end //  END OF I2C_READ == 0 |  |  |  |         end //  END OF I2C_READ == 0 | 
			
		
	
		
		
			
				
					
					|  |  |  | 
 |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         else begin |  |  |  |         else begin | 
			
		
	
		
		
			
				
					
					|  |  |  |           if (((I2C_OUTPUT_TYPE == 3) /*|| (I2C_OUTPUT_TYPE == 0)*/) && (I2C_INPUT_LEN > 1))  begin |  |  |  |           //KBD_FREEZE <= 0;  //  UNFREEZING KBD AFTER ANYONE I2C RECEIVING | 
			
				
				
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           //if (((I2C_OUTPUT_TYPE == 3) && (I2C_INPUT_LEN == 10)) || ((I2C_OUTPUT_TYPE == 0) && (I2C_INPUT_LEN > 1)))  begin  //  HARD | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |           if (((I2C_OUTPUT_TYPE == 3) || (I2C_OUTPUT_TYPE == 0)) && (I2C_INPUT_LEN > 1))  begin  //  SOFT | 
			
		
	
		
		
			
				
					
					|  |  |  |           //  DEACTIVATING INTERRRUPT IF HOST READ INPUT REPORT (LEN 10) AFTER INTERRUPT OR EMPTY DATA (>=2 BYTES) AFTER RESET |  |  |  |           //  DEACTIVATING INTERRRUPT IF HOST READ INPUT REPORT (LEN 10) AFTER INTERRUPT OR EMPTY DATA (>=2 BYTES) AFTER RESET | 
			
		
	
		
		
			
				
					
					|  |  |  |             //if (ring_rd == ring_wr) |  |  |  |           //  AND UNFREEZING KEYBOARD | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |               INT = 1; |  |  |  |             INT <= 1; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |               int_tmr = 0; |  |  |  |             //KBD_FREEZE <= 0; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  | 
 |  |  |  |             //IS_EMPTY_REPORT = 1; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |             //if (ring_rd != ring_wr) |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |             //  ring_rd = ring_rd + 1; |  |  |  |  | 
			
		
	
		
		
	
		
		
	
		
		
	
		
		
	
		
		
			
				
					
					|  |  |  |           end |  |  |  |           end | 
			
		
	
		
		
			
				
					
					|  |  |  |           I2C_OUTPUT_TYPE = 3; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |           I2C_OUT_DESC_MASK = 0; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         end |  |  |  |         end | 
			
		
	
		
		
			
				
					
					|  |  |  |         last_trans = I2C_TRANS; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |       end    //  I2C_STOP CONDITION (OR REPEAT START DETECTED) - END |  |  |  |       end    //  I2C_STOP CONDITION (OR REPEAT START DETECTED) - END | 
			
		
	
		
		
			
				
					
					|  |  |  | 
 |  |  |  | 
 | 
			
		
	
		
		
			
				
					
					|  |  |  |       else if ((last_uart_active == 1) && (UART_ACTIVE == 0))  begin |  |  |  |       else if ((last_uart_active == 1) && (UART_ACTIVE == 0) && (uart_double_ff == 1))  begin | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |         if (uart_double_ff == 1)  begin |  |  |  |         UART_WR = 1; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |           UART_WR = 1; |  |  |  |         UART_TX_DATA = 8'hFF; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |           UART_TX_DATA = 8'hFF; |  |  |  |         uart_double_ff = 0; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |           uart_double_ff = 0; |  |  |  |         I2C_INPUT_LEN = 0; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |         end |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         last_uart_active = UART_ACTIVE; |  |  |  |  | 
			
		
	
		
		
	
		
		
	
		
		
	
		
		
	
		
		
	
		
		
			
				
					
					|  |  |  |       end |  |  |  |       end | 
			
		
	
		
		
			
				
					
					|  |  |  |       else if ((last_uart_active == 0) && (UART_ACTIVE == 1)) |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         last_uart_active = UART_ACTIVE; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  | 
 |  |  |  | 
 | 
			
		
	
		
		
			
				
					
					|  |  |  |       else if (UART_WR == 1) |  |  |  |       else if (UART_WR == 1) | 
			
		
	
		
		
			
				
					
					|  |  |  |         UART_WR = 0; |  |  |  |         UART_WR <= 0; | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  | 
 |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |       else if (int_tmr[19] != 1) |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |         int_tmr = int_tmr + 1; |  |  |  |  | 
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  | 
 |  |  |  | 
 | 
			
		
	
		
		
			
				
					
					|  |  |  |       else if ((int_tmr[19] == 1) && (I2C_OUTPUT_TYPE == 3) && (I2C_TRANS == 0)) begin |  |  |  |       else if ((last_isr == 0) && (ISR == 1) && (INT == 1)) begin  //  INTERRUPT FROM KEYBOARD | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |         if (ring_rd != ring_wr) |  |  |  |         /*if ((ring_wr + 1) != ring_rd) | 
			
				
				
			
		
	
		
		
			
				
					
					|  |  |  |           INT = 0; |  |  |  |           ring_wr = ring_wr + 1; | 
			
				
				
			
		
	
		
		
	
		
		
	
		
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |         ring_report[ring_wr * 8 + 0] <=  kbd_report[ (8 * 0 + 7) : (8 * 0 + 0) ]; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |         wr_cnt = 1;*/ | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |         INT = 0; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |         I2C_OUTPUT_TYPE = 3; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |         I2C_OUT_DESC_MASK = 8'h00; | 
			
		
	
		
		
			
				
					
					|  |  |  |       end |  |  |  |       end | 
			
		
	
		
		
			
				
					
					|  |  |  |       /*else if (wr_cnt != 0) begin |  |  |  |       /*else if (wr_cnt != 0) begin | 
			
		
	
		
		
			
				
					
					|  |  |  |         ring_report[ring_wr * 8 + wr_cnt] <=  kbd_report[ (8 * wr_cnt + 7) : (8 * wr_cnt + 0) ]; |  |  |  |         ring_report[ring_wr * 8 + wr_cnt] <=  kbd_report[ (8 * wr_cnt + 7) : (8 * wr_cnt + 0) ]; | 
			
		
	
	
		
		
			
				
					|  |  | @ -280,7 +247,10 @@ module top (input CLK, output LED1, LED2, LED3, LED4, LED5, | 
			
		
	
		
		
			
				
					
					|  |  |  |         //  if (wr_cnt == 0)  //  START ISR |  |  |  |         //  if (wr_cnt == 0)  //  START ISR | 
			
		
	
		
		
			
				
					
					|  |  |  |       end*/ |  |  |  |       end*/ | 
			
		
	
		
		
			
				
					
					|  |  |  | 
 |  |  |  | 
 | 
			
		
	
		
		
			
				
					
					|  |  |  | 
 |  |  |  |       last_wr <= I2C_WR; | 
			
				
				
			
		
	
		
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |       last_trans <= I2C_TRANS; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |       last_uart_active <= UART_ACTIVE; | 
			
		
	
		
		
			
				
					
					|  |  |  |  |  |  |  |       last_isr <= ISR; | 
			
		
	
		
		
			
				
					
					|  |  |  |     end |  |  |  |     end | 
			
		
	
		
		
			
				
					
					|  |  |  |   end |  |  |  |   end | 
			
		
	
		
		
			
				
					
					|  |  |  | 
 |  |  |  | 
 | 
			
		
	
	
		
		
			
				
					|  |  | @ -292,8 +262,6 @@ module top (input CLK, output LED1, LED2, LED3, LED4, LED5, | 
			
		
	
		
		
			
				
					
					|  |  |  |   assign LED2 = KBD_LED_STATUS[0]; |  |  |  |   assign LED2 = KBD_LED_STATUS[0]; | 
			
		
	
		
		
			
				
					
					|  |  |  |   assign LED3 = KBD_LED_STATUS[1]; |  |  |  |   assign LED3 = KBD_LED_STATUS[1]; | 
			
		
	
		
		
			
				
					
					|  |  |  |   assign LED4 = KBD_LED_STATUS[2];//KBD_FREEZE;//UART_ACTIVE; |  |  |  |   assign LED4 = KBD_LED_STATUS[2];//KBD_FREEZE;//UART_ACTIVE; | 
			
		
	
		
		
			
				
					
					|  |  |  |   //assign LED3 = UART_ACTIVE; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |   //assign LED4 = uart_double_ff; |  |  |  |  | 
			
		
	
		
		
			
				
					
					|  |  |  |   //assign ACK = I2C_READ;//I2C_WR; //I2C_ACK; |  |  |  |   //assign ACK = I2C_READ;//I2C_WR; //I2C_ACK; | 
			
		
	
		
		
			
				
					
					|  |  |  | 
 |  |  |  | 
 | 
			
		
	
		
		
			
				
					
					|  |  |  |   assign COM_TX = UART_TX_LINE;//COM_RX; |  |  |  |   assign COM_TX = UART_TX_LINE;//COM_RX; | 
			
		
	
	
		
		
			
				
					|  |  | 
 |