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pocketinstrument [2020/08/07 11:47] gongyu |
pocketinstrument [2020/08/22 21:26] (当前版本) gongyu [4 参考代码] |
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| - | ### 基于小脚丫FPGA的口袋仪器 | + | ## 基于小脚丫FPGA的口袋仪器 |
| - | #### 1 主要功能及特性 | + | ### 1 主要功能及特性 |
| * 一路[[DDS]]任意波形发生器 | * 一路[[DDS]]任意波形发生器 | ||
| * 12位R-2R [[DAC]] | * 12位R-2R [[DAC]] | ||
| 行 18: | 行 18: | ||
| {{drawio>pocketinstru:stepinstrument}} | {{drawio>pocketinstru:stepinstrument}} | ||
| - | #### 2 相关设计文档 | + | ### 2 相关设计文档 |
| * {{:stepinstrument.pdf|Step口袋仪器板原理图 - PDF格式}} | * {{:stepinstrument.pdf|Step口袋仪器板原理图 - PDF格式}} | ||
| * BOM文件 | * BOM文件 | ||
| 行 24: | 行 24: | ||
| * Gerber文件 - ZIP格式 | * Gerber文件 - ZIP格式 | ||
| - | #### 3 核心器件技术资料及数据手册 | + | ### 3 核心器件技术资料及数据手册 |
| - | * MAX1193-双路45Msps、8位高速ADC | + | * MAX1193-双路45Msps、8位高速[[ADC]] |
| * SGM8301轨到轨高速运算放大器 | * SGM8301轨到轨高速运算放大器 | ||
| * SGM8601高速运算放大器 | * SGM8601高速运算放大器 | ||
| 行 31: | 行 31: | ||
| * LMV358 双路运算放大器 | * LMV358 双路运算放大器 | ||
| * TL974 4路轨到轨运算放大器 | * TL974 4路轨到轨运算放大器 | ||
| - | * CH340 USB转UART变换器 | + | * CH340 [[USB]]转[[UART]]变换器 |
| * LM2776电荷泵变换器 | * LM2776电荷泵变换器 | ||
| - | * MIC5504-3.3 LDO | + | * MIC5504-3.3 [[LDO]] |
| - | * 240*240 LCD模块 | + | * 1.54寸、分辨率为240*240的RGB[[LCD]]模块 |
| + | |||
| + | ### 4 参考代码 | ||
| + | * [[dds_verilog|DDS任意波形发生器/可调直流电压发生器]] | ||
| + | * [[scope_verilog|与示波器相关的FPGA Verilog逻辑设计]] | ||
| + | * [[ADCSampling|ADC采样]] | ||
| + | * [[LCD240*240Disp|240*240分辨率RGB LCD的控制]] | ||
| + | |||
| + | 数据ADC读出、LCD写入的状态控制 | ||
| + | |||
| + | <code verilog> | ||
| + | // -------------------------------------------------------------------- | ||
| + | // >>>>>>>>>>>>>>>>>>>>>>>>> COPYRIGHT NOTICE <<<<<<<<<<<<<<<<<<<<<<<<< | ||
| + | // -------------------------------------------------------------------- | ||
| + | // Module: Arbiter | ||
| + | // | ||
| + | // Author: Step | ||
| + | // | ||
| + | // Description: Control sample and display in different time | ||
| + | // | ||
| + | // Web: www.stepfpga.com | ||
| + | // | ||
| + | // -------------------------------------------------------------------- | ||
| + | // Code Revision History : | ||
| + | // -------------------------------------------------------------------- | ||
| + | // Version: |Mod. Date: |Changes Made: | ||
| + | // V1.1 |2016/10/30 |Initial ver | ||
| + | // -------------------------------------------------------------------- | ||
| + | module Arbiter ( | ||
| + | input clk_in, // system clock | ||
| + | input rst_n_in, //system reset, active low | ||
| + | |||
| + | input sample_done, | ||
| + | input display_done, | ||
| + | |||
| + | output reg sample_en, | ||
| + | output reg display_en | ||
| + | ); | ||
| + | |||
| + | localparam IDLE = 2'd0; | ||
| + | localparam SAMPLE = 2'd1; | ||
| + | localparam DISPLAY = 2'd2; | ||
| + | |||
| + | reg [1:0] state; | ||
| + | always@(posedge clk_in or negedge rst_n_in) begin | ||
| + | if(!rst_n_in) begin | ||
| + | state <= IDLE; | ||
| + | sample_en <= 1'b0; | ||
| + | display_en <= 1'b0; | ||
| + | end else begin | ||
| + | case(state) | ||
| + | IDLE:begin | ||
| + | sample_en <= 1'b0; | ||
| + | display_en <= 1'b0; | ||
| + | state <= SAMPLE; | ||
| + | end | ||
| + | SAMPLE:begin | ||
| + | if(sample_done) begin | ||
| + | sample_en <= 1'b0; | ||
| + | display_en <= 1'b1; | ||
| + | state <= DISPLAY; | ||
| + | end else begin | ||
| + | sample_en <= 1'b1; | ||
| + | display_en <= 1'b0; | ||
| + | end | ||
| + | end | ||
| + | DISPLAY:begin | ||
| + | if(display_done) begin | ||
| + | sample_en <= 1'b1; | ||
| + | display_en <= 1'b0; | ||
| + | state <= SAMPLE; | ||
| + | end else begin | ||
| + | sample_en <= 1'b0; | ||
| + | display_en <= 1'b1; | ||
| + | end | ||
| + | end | ||
| + | default:state <= IDLE; | ||
| + | endcase | ||
| + | end | ||
| + | end | ||
| + | |||
| + | endmodule | ||
| + | |||
| + | </code> | ||