| ////////////////////////////////////////////////////////////////////////////// |
| // SPDX-FileCopyrightText: 2021 , Dinesh Annayya |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // SPDX-License-Identifier: Apache-2.0 |
| // SPDX-FileContributor: Created by Dinesh Annayya <dinesha@opencores.org> |
| // |
| ////////////////////////////////////////////////////////////////////// |
| //// //// |
| //// ws281x Top //// |
| //// //// |
| //// This file is part of the riscduino cores project //// |
| //// https://github.com/dineshannayya/riscduino.git //// |
| //// //// |
| //// Description //// |
| //// //// |
| //// To Do: //// |
| //// nothing //// |
| //// //// |
| //// Author(s): //// |
| //// - Dinesh Annayya, dinesha@opencores.org //// |
| //// //// |
| //// Revision : //// |
| //// 0.1 - 23rd Aug 2022, Dinesh A //// |
| //// initial version //// |
| ////////////////////////////////////////////////////////////////////// |
| |
| module ws281x_top ( |
| // System Signals |
| // Inputs |
| input logic mclk, |
| input logic h_reset_n, |
| |
| // Reg Bus Interface Signal |
| input logic reg_cs, |
| input logic reg_wr, |
| input logic [3:0] reg_addr, |
| input logic [31:0] reg_wdata, |
| input logic [3:0] reg_be, |
| |
| // Outputs |
| output logic [31:0] reg_rdata, |
| output logic reg_ack, |
| |
| output logic [3:0] txd |
| |
| ); |
| |
| assign txd[2] = txd[0]; |
| assign txd[3] = txd[1]; |
| |
| logic[15:0] cfg_reset_period ; // Reset period interm of clk |
| logic [9:0] cfg_clk_period ; // Total bit clock period |
| logic [9:0] cfg_th0_period ; // bit-0 drive low period |
| logic [9:0] cfg_th1_period ; // bit-1 drive low period |
| |
| logic port0_enb ; |
| logic port0_rd ; |
| logic port0_dval ; |
| logic [23:0] port0_data ; |
| logic port1_enb ; |
| logic port1_rd ; |
| logic port1_dval ; |
| logic [23:0] port1_data ; |
| //logic [23:0] port2_data ; |
| //logic [23:0] port3_data ; |
| |
| ws281x_reg u_reg ( |
| .mclk ( mclk ), |
| .h_reset_n ( h_reset_n ), |
| |
| .reg_cs ( reg_cs ), |
| .reg_wr ( reg_wr ), |
| .reg_addr ( reg_addr ), |
| .reg_wdata ( reg_wdata ), |
| .reg_be ( reg_be ), |
| |
| .reg_rdata ( reg_rdata ), |
| .reg_ack ( reg_ack ), |
| |
| .cfg_reset_period ( cfg_reset_period ), // Reset period interm of clk |
| .cfg_clk_period ( cfg_clk_period ), // Total bit clock period |
| .cfg_th0_period ( cfg_th0_period ), // bit-0 drive low period |
| .cfg_th1_period ( cfg_th1_period ), // bit-1 drive low period |
| |
| .port0_enb ( port0_enb ), |
| .port0_rd ( port0_rd ), |
| .port0_data ( port0_data ), |
| .port0_dval ( port0_dval ), |
| |
| .port1_enb ( port1_enb ), |
| .port1_rd ( port1_rd ), |
| .port1_data ( port1_data ), |
| .port1_dval ( port1_dval ) |
| |
| //.port2_enb ( port2_enb ), |
| //.port2_rd ( port2_rd ), |
| //.port2_data ( port2_data ), |
| //.port2_dval ( port2_dval ), |
| |
| //.port3_enb ( port3_enb ), |
| //.port3_rd ( port3_rd ), |
| //.port3_data ( port3_data ), |
| //.port3_dval ( port3_dval ) |
| |
| ); |
| |
| |
| //wx281x port-0 |
| ws281x_driver u_txd_0( |
| .clk (mclk ), // Clock input. |
| .reset_n (h_reset_n ), // Resets the internal state of the driver |
| |
| .cfg_reset_period (cfg_reset_period ), // Reset period interm of clk |
| .cfg_clk_period (cfg_clk_period ), // Total bit clock period |
| .cfg_th0_period (cfg_th0_period ), // bit-0 drive low period |
| .cfg_th1_period (cfg_th1_period ), // bit-1 drive low period |
| |
| .port_enb (port0_enb ), |
| .data_available (port0_dval ), |
| .green_in (port0_data[23:16]), // 8-bit green data |
| .red_in (port0_data[15:8] ), // 8-bit red data |
| .blue_in (port0_data[7:0] ), // 8-bit blue data |
| .data_rd (port0_rd ), // data read |
| |
| .txd (txd[0] ) // Signal to send to WS2811 chain. |
| ); |
| |
| //wx281x port-1 |
| ws281x_driver u_txd_1( |
| .clk (mclk ), // Clock input. |
| .reset_n (h_reset_n ), // Resets the internal state of the driver |
| |
| .cfg_reset_period (cfg_reset_period ), // Reset period interm of clk |
| .cfg_clk_period (cfg_clk_period ), // Total bit clock period |
| .cfg_th0_period (cfg_th0_period ), // bit-0 drive low period |
| .cfg_th1_period (cfg_th1_period ), // bit-1 drive low period |
| |
| .port_enb (port1_enb ), |
| .data_available (port1_dval ), |
| .green_in (port1_data[23:16]), // 8-bit green data |
| .red_in (port1_data[15:8] ), // 8-bit red data |
| .blue_in (port1_data[7:0] ), // 8-bit blue data |
| .data_rd (port1_rd ), // data read |
| |
| .txd (txd[1] ) // Signal to send to WS2811 chain. |
| ); |
| |
| /*** |
| //wx281x port-2 |
| ws281x_driver u_txd_2( |
| .clk (mclk ), // Clock input. |
| .reset_n (h_reset_n ), // Resets the internal state of the driver |
| |
| .cfg_reset_period (cfg_reset_period ), // Reset period interm of clk |
| .cfg_clk_period (cfg_clk_period ), // Total bit clock period |
| .cfg_th0_period (cfg_th0_period ), // bit-0 drive low period |
| .cfg_th1_period (cfg_th1_period ), // bit-1 drive low period |
| |
| .port_enb (port2_enb ), |
| .data_available (port2_dval ), |
| .green_in (port2_data[23:16]), // 8-bit green data |
| .red_in (port2_data[15:8] ), // 8-bit red data |
| .blue_in (port2_data[7:0] ), // 8-bit blue data |
| .data_rd (port2_rd ), // data read |
| |
| .txd (txd[2] ) // Signal to send to WS2811 chain. |
| ); |
| |
| //wx281x port-3 |
| ws281x_driver u_txd_3( |
| .clk (mclk ), // Clock input. |
| .reset_n (h_reset_n ), // Resets the internal state of the driver |
| |
| .cfg_reset_period (cfg_reset_period ), // Reset period interm of clk |
| .cfg_clk_period (cfg_clk_period ), // Total bit clock period |
| .cfg_th0_period (cfg_th0_period ), // bit-0 drive low period |
| .cfg_th1_period (cfg_th1_period ), // bit-1 drive low period |
| |
| .port_enb (port3_enb ), |
| .data_available (port3_dval ), |
| .green_in (port3_data[23:16]), // 8-bit green data |
| .red_in (port3_data[15:8] ), // 8-bit red data |
| .blue_in (port3_data[7:0] ), // 8-bit blue data |
| .data_rd (port3_rd ), // data read |
| |
| .txd (txd[3] ) // Signal to send to WS2811 chain. |
| ); |
| ***/ |
| endmodule |
