Free Software, Open Source Hardware keyboard controller. https://www.forksand.com/
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

299 lines
12 KiB

module matrix_kbd (input CLK, input RESET, input FREEZE, inout [15:0] ROWS, input [7:0] COLUMNS, output [7:0] kbd_r0, kbd_r2, kbd_r3, kbd_r4, kbd_r5, kbd_r6, kbd_r7,/*output [63:0] kbd_report,*/ output INT);
// * - ESC (29), 7 - F1 (3A), 4 - F2 (3B), 1 - NUM_LOCK (53)
// 0 - CAPS LOCK (39), 8 - R (15), 5 - BACKSPACE (2A), 2 - ENTER (58)
// # - LSHIFT (E1), 9 - C (06), 6 - V (19), 3 - DELETE (4C)
// D - LCTRL (E0), C - LALT (E2), B - SPACE (2C), A - RGUI (E7)
parameter ONE_ROW_TIME = 12000;
4 years ago
parameter ROW_STT_PROCESS_TIME = 11000;
parameter ONE_COLUMN_PROCESS_TIME = 50;
reg [15:0] row_time = 0;
4 years ago
reg [3:0] row_counter;
//reg [7:0] last_data [3:0];//[31:0] last_data;
4 years ago
reg [7:0] temp;
reg [7:0] i;
//reg [63:0] report;
4 years ago
reg [7:0] report [6:0]; // NO BYTE 2
//reg [5:0] report_free_place;
reg isr;
4 years ago
reg [15:0] ROWS_EN = 0;
reg [15:0] ROWS_OUT = 0;
wire [15:0] ROWS_IN;
reg [7:0] COLS_SHADOW;
reg [7:0] kbd_code;
4 years ago
wire [7:0] kbd_code_hid;
reg is_pressed;
4 years ago
reg ram_wr;
reg [8:0] ram_adr;
wire [7:0] ram_rd;
always @ (negedge CLK) begin
COLS_SHADOW <= COLUMNS;
end
ram RAM (CLK, ram_wr, ram_adr, temp, ram_rd);//module ram(input clk, wen, input [8:0] addr, input [7:0] wdata, output [7:0] rdata);
4 years ago
always @ (posedge CLK) begin
if (RESET == 0) begin
//last_data <= 32'hFFFFFFFF;
//report_free_place <= 6'h3F;
//report <= 0;
end
else begin
if (FREEZE == 0) begin
if (row_time == ONE_ROW_TIME) begin
ram_wr = 0;
row_time <= 0;
row_counter = row_counter + 1;
ROWS_EN = 1 << row_counter;
ram_adr = row_counter;
end
else
row_time <= row_time + 1;
// ROW 0 - D, 1 - A, 2 - C, 3 - B
if (row_time == (ROW_STT_PROCESS_TIME - 1))
temp = ram_rd;
if (row_time == (ROW_STT_PROCESS_TIME + ONE_COLUMN_PROCESS_TIME * 7 + 1))
4 years ago
ram_wr = 1;
if (row_time == (ROW_STT_PROCESS_TIME + ONE_COLUMN_PROCESS_TIME * 0/*0*/)) begin
check_column (0);
/*if (COLS_SHADOW[0] != last_data[row_counter*4 + 0]) begin
case (row_counter) 0: kbd_code = 8'h29; 1: kbd_code = 8'h53; 2: kbd_code = 8'h3A; 3: kbd_code = 8'h3B; // ESC, F1-F2, NUM LOCK
default: kbd_code = 1;
endcase
if ((COLS_SHADOW[0] == 0) && (last_data[row_counter*4 + 0] == 1)) is_pressed = 1;
else is_pressed = 0;
end
else kbd_code = 255;
last_data[row_counter*4 + 0] <= COLS_SHADOW[0];*/
end
else if (row_time == (ROW_STT_PROCESS_TIME + ONE_COLUMN_PROCESS_TIME * 2/*4*/)) begin
check_column (2);
end
/*if (COLS_SHADOW[2] != last_data[row_counter*4 + 2]) begin
case (row_counter) 0: kbd_code = 8'h39; 1: kbd_code = 8'h58; 2: kbd_code = 8'h15; 3: kbd_code = 8'h2A; // CAPS LOCK, R, BACKSPACE, ENTER
default: kbd_code = 1;
endcase
if ((COLS_SHADOW[2] == 0) && (last_data[row_counter*4 + 2] == 1)) is_pressed = 1;
else is_pressed = 0;
end
else kbd_code = 0;
last_data[row_counter*4 + 2] <= COLS_SHADOW[2];
end*/
else if (row_time == (ROW_STT_PROCESS_TIME + ONE_COLUMN_PROCESS_TIME * 1/*2*/)) begin
check_column (1);
/*
if (COLS_SHADOW[1] != last_data[row_counter*4 + 1]) begin
case (row_counter) 0: kbd_code = 8'hE1; 1: kbd_code = 8'h4C; 2: kbd_code = 8'h06; 3: kbd_code = 8'h19; // LEFT SHIFT, C, V, DELETE
default: kbd_code = 1;
endcase
if ((COLS_SHADOW[1] == 0) && (last_data[row_counter*4 + 1] == 1)) is_pressed = 1;
else is_pressed = 0;
end
else kbd_code = 255;
last_data[row_counter*4 + 1] <= COLS_SHADOW[1];*/
end
else if (row_time == (ROW_STT_PROCESS_TIME + ONE_COLUMN_PROCESS_TIME * 3/*6*/)) //begin
check_column (3);
else if (row_time == (ROW_STT_PROCESS_TIME + ONE_COLUMN_PROCESS_TIME * 4/*6*/))
check_column (4);
else if (row_time == (ROW_STT_PROCESS_TIME + ONE_COLUMN_PROCESS_TIME * 5/*6*/))
check_column (5);
else if (row_time == (ROW_STT_PROCESS_TIME + ONE_COLUMN_PROCESS_TIME * 6/*6*/))
check_column (6);
else if (row_time == (ROW_STT_PROCESS_TIME + ONE_COLUMN_PROCESS_TIME * 7/*6*/))
check_column (7);
/*
if (COLS_SHADOW[3] != last_data[row_counter*4 + 3]) begin
case (row_counter) 0: kbd_code = 8'hE0; 1: kbd_code = 8'hE7; 2: kbd_code = 8'hE2; 3: kbd_code = 8'h2C; // LCTRL, LALT, SPACE, RGUI
default: kbd_code = 1;
endcase
if ((COLS_SHADOW[3] == 0) && (last_data[row_counter*4 + 3] == 1)) is_pressed = 1;
else is_pressed = 0;
end
else kbd_code = 255;
last_data[row_counter*4 + 3] <= COLS_SHADOW[3];
*/
//end
else
kbd_code = 255;
// START PACK I2C_HID REPORT
if (kbd_code_hid != 0 /*kbd_code != 255*/) begin
isr = 1;
//report[15:8] <= 0;
//report[63:56] <= 0;
if ((kbd_code_hid > 8'hDF) && (kbd_code_hid < 8'hE8))/*((kbd_code > 8'hDF) && (kbd_code < 8'hE8))*/ begin
//kbd_code = kbd_code & 8'h07;
if (is_pressed)
//report [7:0] <= report [7:0] | (1<<(kbd_code_hid & 8'h07));//(1<<kbd_code);
report [0] = report [0] | (1<<(kbd_code_hid & 8'h07));//(1<<kbd_code);
else
report [0] <= report [0] & (~(1<<(kbd_code_hid & 8'h07)));//(~(1<<kbd_code));
//report [7:0] <= report [7:0] & (~(1<<(kbd_code_hid & 8'h07)));//(~(1<<kbd_code));
end
else begin
if (is_pressed) begin
/*for (i = 0; i < 4; i = i + 1) begin
if (report_free_place[i] == 1) begin
report [ ((i + 2) * 8 + 7) : ((i + 2) * 8 + 0)] <= kbd_code;
report_free_place[i] = 0;
is_pressed = 0; // NO ERROR DETECTED
end
4 years ago
end
if (report_free_place[0] == 1) begin
report [ ((0 + 2) * 8 + 7) : ((0 + 2) * 8 + 0)] <= kbd_code;
report_free_place[0] = 0;
end*/
if (report [ 1 ] == 0)
report [ 1 ] <= kbd_code_hid;//kbd_code;
else if (report [ 2 ] == 0)
report [ 2 ] <= kbd_code_hid;//kbd_code;
else if (report [ 3 ] == 0)
report [ 3 ] <= kbd_code_hid;//kbd_code;
else if (report [ 4 ] == 0)
report [ 4 ] <= kbd_code_hid;//kbd_code;
else if (report [ 5 ] == 0)
report [ 5 ] <= kbd_code_hid;//kbd_code;
else if (report [ 6 ] == 0)
report [ 6 ] <= kbd_code_hid;//kbd_code;
/*if (report [ 23 : 16 ] == 0)
report [ 23 : 16 ] <= kbd_code_hid;//kbd_code;
else if (report [ 31 : 24 ] == 0)
report [ 31 : 24 ] <= kbd_code_hid;//kbd_code;
else if (report [ 39 : 32 ] == 0)
report [ 39 : 32 ] <= kbd_code_hid;//kbd_code;
else if (report [ 47 : 40 ] == 0)
report [ 47 : 40 ] <= kbd_code_hid;//kbd_code;
else if (report [ 55 : 48 ] == 0)
report [ 55 : 48 ] <= kbd_code_hid;//kbd_code;
else if (report [ 63 : 56 ] == 0)
report [ 63 : 56 ] <= kbd_code_hid;//kbd_code;*/
end
4 years ago
else begin
for (i = 1; i < 7; i = i + 1) begin
//if (report [ ((i + 2) * 8 + 7) : ((i + 2) * 8 + 0)] == kbd_code_hid/*kbd_code*/) begin
//report [ ((i + 2) * 8 + 7) : ((i + 2) * 8 + 0)] <= 0;
if (report [i] == kbd_code_hid/*kbd_code*/) begin
report [i] <= 0;
//report_free_place[i] = 1;
end
end
end
//if (kbd_code == 8'h2C) begin
//if (is_pressed)
// report [15:8] <= kbd_code;
//else
// report [15:8] <= 0;
//end
//else if (kbd_code == 1) begin
// if (is_pressed)
// report [23:16] <= kbd_code;
// else
// report [23:16] <= 0;
//end
end
end // END OF KBD CODE SEND ALG
else
isr <= 0;
/*if (kbd_code != 0) begin
if (is_pressed)
report [7:0] <= kbd_code;
else
report [7:0] <= 0;
end*/
end
end
end
/*else if (row_time == (ONE_ROW_TIME/2 + 6)) begin
if (COLS_SHADOW[3] != last_data[row_counter*4 + 3]) begin
case (row_counter) 0: kbd_code = 8'hE0; 1: kbd_code = 8'hE7; 2: kbd_code = 8'hE2; 3: kbd_code = 8'h2C; // LCTRL, LALT, SPACE, RGUI
default: kbd_code = 1;
endcase
if ((COLS_SHADOW[3] == 0) && (last_data[row_counter*4 + 3] == 1)) is_pressed = 1;
else is_pressed = 0;
end
else kbd_code = 0;
last_data[row_counter*4 + 3] <= COLS_SHADOW[3];
end*/
task check_column; //(input [2:0] column);
4 years ago
input [2:0] column;
begin
//if (COLS_SHADOW[column] != last_data[row_counter][column]/*[row_counter*8 + column]*/) begin
4 years ago
if (COLS_SHADOW[column] != temp[column]) begin
kbd_code = row_counter*8 + column;
//if ((COLS_SHADOW[column] == 0) && (last_data[row_counter][column]/*[row_counter*8 + column]*/ == 1)) is_pressed = 1;
4 years ago
if ((COLS_SHADOW[column] == 0) && (temp[column] == 1)) is_pressed = 1;
else is_pressed = 0;
end
else kbd_code = 255;
//last_data[row_counter][column]/*[row_counter*8 + column]*/ <= COLS_SHADOW[column];
4 years ago
temp[column] = COLS_SHADOW[column];
end
endtask
//assign kbd_report = report;
4 years ago
assign kbd_r0 = report[0];
assign kbd_r2 = report[1];
assign kbd_r3 = report[2];
assign kbd_r4 = report[3];
assign kbd_r5 = report[4];
assign kbd_r6 = report[5];
assign kbd_r7 = report[6];
assign INT = isr;
//assign ROWS_EN = (1 << row_counter);
4 years ago
SB_RAM40_4K #(
.INIT_0(256'h0000_0001_0001_0001_00E7_0058_004C_0053__0001_0001_0001_0001_00E0_0039_00E1_0029), // ROW 0-1
.INIT_1(256'h0001_0001_0001_0001_002C_002A_0019_003B__0001_0001_0001_0001_00E2_0015_0006_003A), // ROW 2-3
.INIT_2(256'h0001_0001_0001_0001_002C_002A_0019_003B__0001_0001_0001_0001_00E2_0015_0006_003A), // ROW 4-5
.INIT_3(256'h0001_0001_0001_0001_002C_002A_0019_003B__0001_0001_0001_0001_00E2_0015_0006_003A), // ROW 6-7
.INIT_4(256'h0001_0001_0001_0001_002C_002A_0019_003B__0001_0001_0001_0001_00E2_0015_0006_003A), // ROW 8-9
.INIT_5(256'h0001_0001_0001_0001_002C_002A_0019_003B__0001_0001_0001_0001_00E2_0015_0006_003A), // ROW 10-11
.INIT_6(256'h0001_0001_0001_0001_002C_002A_0019_003B__0001_0001_0001_0001_00E2_0015_0006_003A), // ROW 12-13
.INIT_7(256'h0001_0001_0001_0001_002C_002A_0019_003B__0001_0001_0001_0001_00E2_0015_0006_003A), // ROW 14-15
.INIT_8(256'h0001_0001_0001_0001_002C_002A_0019_003B__0001_0001_0001_0001_00E2_0015_0006_003A), // ROW 16-17
.INIT_9(256'h0001_0001_0001_0001_002C_002A_0019_003B__0001_0001_0001_0001_00E2_0015_0006_003A), // ROW 18-19
.WRITE_MODE(1),
.READ_MODE(1)
) kbd_codes (
.RDATA(kbd_code_hid),
.RADDR(kbd_code),
.RCLK(CLK),
.RCLKE(1'b1),
.RE(1'b1),
.WADDR(8'b0),
.WCLK(1'b0),
.WCLKE(1'b0),
.WDATA(8'b0),
.WE(1'b0)
);
SB_IO #(
.PIN_TYPE(6'b 1010_01),
.PULLUP(1'b 0)
4 years ago
) rows_io [15:0] (
.PACKAGE_PIN(ROWS),
.OUTPUT_ENABLE(ROWS_EN),
.D_OUT_0(ROWS_OUT),
.D_IN_0(ROWS_IN)
);
endmodule