pavel/omdazz_WS2812b
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master1 #2

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pavel merged 5 commits from master1 into master 2026-08-07 19:09:34 +03:00
Conversation 0 Commits 5 Files Changed 4 +94 -101
4 changed files with 94 additions and 101 deletions
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19
omdazz_WS2812b.qsf
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@ -38,7 +38,7 @@
set_global_assignment -name FAMILY "Cyclone IV E"
set_global_assignment -name DEVICE EP4CE6E22C8
set_global_assignment -name TOP_LEVEL_ENTITY omdazz_WS2812b
set_global_assignment -name TOP_LEVEL_ENTITY top
set_global_assignment -name ORIGINAL_QUARTUS_VERSION "13.0 SP1"
set_global_assignment -name PROJECT_CREATION_TIME_DATE "17:00:54 AUGUST 07, 2026"
set_global_assignment -name LAST_QUARTUS_VERSION "13.0 SP1"
@ -48,21 +48,20 @@ set_global_assignment -name MIN_CORE_JUNCTION_TEMP 0
set_global_assignment -name MAX_CORE_JUNCTION_TEMP 85
set_global_assignment -name ERROR_CHECK_FREQUENCY_DIVISOR 1
set_global_assignment -name NOMINAL_CORE_SUPPLY_VOLTAGE 1.2V
set_global_assignment -name VERILOG_FILE omdazz_WS2812b.v
set_global_assignment -name POWER_PRESET_COOLING_SOLUTION "23 MM HEAT SINK WITH 200 LFPM AIRFLOW"
set_global_assignment -name POWER_BOARD_THERMAL_MODEL "NONE (CONSERVATIVE)"
set_global_assignment -name PARTITION_NETLIST_TYPE SOURCE -section_id Top
set_global_assignment -name PARTITION_FITTER_PRESERVATION_LEVEL PLACEMENT_AND_ROUTING -section_id Top
set_global_assignment -name PARTITION_COLOR 16764057 -section_id Top
set_global_assignment -name STRATIX_DEVICE_IO_STANDARD "2.5 V"
set_instance_assignment -name IO_STANDARD "3.3-V LVTTL" -to CLOCK_50
set_instance_assignment -name IO_STANDARD "3.3-V LVTTL" -to D_INP[4]
set_instance_assignment -name IO_STANDARD "3.3-V LVTTL" -to WS2812
set_location_assignment PIN_23 -to CLOCK_50
set_location_assignment PIN_31 -to D_INP[4]
set_location_assignment PIN_42 -to WS2812
set_global_assignment -name CDF_FILE output_files/Chain1.cdf
set_global_assignment -name CDF_FILE output_files/Chain3.cdf
set_global_assignment -name CDF_FILE output_files/Chain5.cdf
set_global_assignment -name SDC_FILE omdazz_WS2812b.sdc
set_global_assignment -name VERILOG_FILE top.v
set_global_assignment -name VERILOG_FILE omdazz_WS2812b.v
set_global_assignment -name CDF_FILE output_files/Chain1.cdf
set_global_assignment -name PARTITION_NETLIST_TYPE SOURCE -section_id Top
set_global_assignment -name PARTITION_FITTER_PRESERVATION_LEVEL PLACEMENT_AND_ROUTING -section_id Top
set_global_assignment -name PARTITION_COLOR 16764057 -section_id Top
set_location_assignment PIN_42 -to WS2812_OUT
set_instance_assignment -name IO_STANDARD "3.3-V LVTTL" -to WS2812_OUT
set_instance_assignment -name PARTITION_HIERARCHY root_partition -to | -section_id Top

3
omdazz_WS2812b.sdc Normal file
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@ -0,0 +1,3 @@
create_clock -period 20 -name CLOCK_50 [get_ports CLOCK_50]

172
omdazz_WS2812b.v
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@ -7,105 +7,95 @@ module omdazz_WS2812b #(
output reg WS2812
);
localparam integer DELAY_1_HIGH = 40 - 1; // 0.8 us @ 50 MHz
localparam integer DELAY_1_LOW = 22 - 1; // 0.45 us @ 50 MHz
localparam integer DELAY_0_HIGH = 20 - 1; // 0.4 us @ 50 MHz
localparam integer DELAY_0_LOW = 43 - 1; // 0.85 us @ 50 MHz
localparam integer DELAY_RESET = 3000 - 1; // 60 us @ 50 MHz
localparam RESET = 2'd0;
localparam DATA_SEND = 2'd1;
localparam BIT_SEND_HIGH = 2'd2;
localparam BIT_SEND_LOW = 2'd3;
parameter F_SCALE = 50 / 27; // conversion factor from 27 MHz to 50 MHz
reg [1:0] state = RESET;
reg [8:0] bit_send = 0;
reg [8:0] data_send = 0;
reg [31:0] clk_count = 0;
parameter DELAY_1_HIGH = (CLK_FRE / 1_000_000 * 85 / 100 * F_SCALE) - 1;
parameter DELAY_1_LOW = (CLK_FRE / 1_000_000 * 40 / 100 * F_SCALE) - 1;
parameter DELAY_0_HIGH = (CLK_FRE / 1_000_000 * 40 / 100 * F_SCALE) - 1;
parameter DELAY_0_LOW = (CLK_FRE / 1_000_000 * 85 / 100 * F_SCALE) - 1;
parameter DELAY_RESET = (CLK_FRE / 10 * F_SCALE) - 1;
// Формат WS2812: обычно GRB, отправка старшим битом вперёд
reg [23:0] WS2812_data = 24'h000001;
parameter RESET = 0; // state machine declaration
parameter DATA_SEND = 1;
parameter BIT_SEND_HIGH = 2;
parameter BIT_SEND_LOW = 3;
always @(posedge CLOCK_50) begin
case (state)
reg [ 1:0] state = 0; // synthesis preserve // main state machine control
reg [ 8:0] bit_send = 0; // amount of bits sent // increase it for larger LED strips/matrix
reg [ 8:0] data_send = 0; // amount of data words sent // increase it for larger LED strips/matrix
reg [31:0] clk_count = 0; // delay control
reg [23:0] WS2812_data = 24'd1; // WS2812 color data
RESET: begin
WS2812 <= 1'b0;
always@(posedge CLOCK_50)
case (state)
RESET:begin
WS2812 <= 0;
if (clk_count < DELAY_RESET)
clk_count <= clk_count + 1'b1;
else begin
clk_count <= 0;
// Смена цвета после передачи очередного кадра
WS2812_data <= {WS2812_data[22:0], WS2812_data[23]};
state <= DATA_SEND;
end
end
if (clk_count < DELAY_RESET)
clk_count <= clk_count + 1;
else begin
clk_count <= 0;
WS2812_data <= {WS2812_data[22:0],WS2812_data[23]};// color shifting for cyclic
state <= DATA_SEND;
end
end
DATA_SEND: begin
if ((data_send == WS2812_NUM) &&
(bit_send == WS2812_WIDTH)) begin
data_send <= 0;
bit_send <= 0;
state <= RESET;
end
else if (bit_send < WS2812_WIDTH) begin
state <= BIT_SEND_HIGH;
end
else begin
data_send <= data_send + 1'b1;
bit_send <= 0;
state <= BIT_SEND_HIGH;
end
end
DATA_SEND:
if (data_send == WS2812_NUM && bit_send == WS2812_WIDTH)begin
data_send <= 0;
bit_send <= 0;
state <= RESET;
end
else if (bit_send < WS2812_WIDTH) begin
state <= BIT_SEND_HIGH;
end
else begin// if (bit_send == WS2812_WIDTH)
data_send <= data_send + 1;
bit_send <= 0;
state <= BIT_SEND_HIGH;
end
BIT_SEND_HIGH:begin
WS2812 <= 1;
BIT_SEND_HIGH: begin
WS2812 <= 1'b1;
if (WS2812_data[bit_send])
if (clk_count < DELAY_1_HIGH)
clk_count <= clk_count + 1;
else begin
clk_count <= 0;
state <= BIT_SEND_LOW;
end
else
if (clk_count < DELAY_0_HIGH)
clk_count <= clk_count + 1;
else begin
clk_count <= 0;
state <= BIT_SEND_LOW;
end
end
if (WS2812_data[WS2812_WIDTH - 1 - bit_send]) begin
if (clk_count < DELAY_1_HIGH)
clk_count <= clk_count + 1'b1;
else begin
clk_count <= 0;
state <= BIT_SEND_LOW;
end
end
else begin
if (clk_count < DELAY_0_HIGH)
clk_count <= clk_count + 1'b1;
else begin
clk_count <= 0;
state <= BIT_SEND_LOW;
end
end
end
BIT_SEND_LOW:begin
WS2812 <= 0;
BIT_SEND_LOW: begin
WS2812 <= 1'b0;
if (WS2812_data[bit_send])
if (clk_count < DELAY_1_LOW)
clk_count <= clk_count + 1;
else begin
clk_count <= 0;
if (WS2812_data[WS2812_WIDTH - 1 - bit_send]) begin
if (clk_count < DELAY_1_LOW)
clk_count <= clk_count + 1'b1;
else begin
clk_count <= 0;
bit_send <= bit_send + 1'b1;
state <= DATA_SEND;
end
end
else begin
if (clk_count < DELAY_0_LOW)
clk_count <= clk_count + 1'b1;
else begin
clk_count <= 0;
bit_send <= bit_send + 1'b1;
state <= DATA_SEND;
end
end
end
default: state <= RESET;
endcase
end
endmodule
bit_send <= bit_send + 1;
state <= DATA_SEND;
end
else
if (clk_count < DELAY_0_LOW)
clk_count <= clk_count + 1;
else begin
clk_count <= 0;
bit_send <= bit_send + 1;
state <= DATA_SEND;
end
end
endcase
endmodule

1
top.v
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@ -1,3 +1,4 @@
top module
module top(
input wire CLOCK_50,
input wire [4:4] D_INP,