IIC接口E2PROM(AT24C64) 讀寫VERILOG 驅(qū)動(dòng)源碼+仿真激勵(lì)文件:module i2c_dri #( parameter SLAVE_ADDR = 7'b1010000 , //EEPROM從機(jī)地址 parameter CLK_FREQ = 26'd50_000_000, //模塊輸入的時(shí)鐘頻率 parameter I2C_FREQ = 18'd250_000 //IIC_SCL的時(shí)鐘頻率 ) ( input clk , input rst_n , //i2c interface input i2c_exec , //I2C觸發(fā)執(zhí)行信號(hào) input bit_ctrl , //字地址位控制(16b/8b) input i2c_rh_wl , //I2C讀寫控制信號(hào) input [15:0] i2c_addr , //I2C器件內(nèi)地址 input [ 7:0] i2c_data_w , //I2C要寫的數(shù)據(jù) output reg [ 7:0] i2c_data_r , //I2C讀出的數(shù)據(jù) output reg i2c_done , //I2C一次操作完成 output reg i2c_ack , //I2C應(yīng)答標(biāo)志 0:應(yīng)答 1:未應(yīng)答 output reg scl , //I2C的SCL時(shí)鐘信號(hào) inout sda , //I2C的SDA信號(hào) //user interface output reg dri_clk //驅(qū)動(dòng)I2C操作的驅(qū)動(dòng)時(shí)鐘 );//localparam definelocalparam st_idle = 8'b0000_0001; //空閑狀態(tài)localparam st_sladdr = 8'b0000_0010; //發(fā)送器件地址(slave address)localparam st_addr16 = 8'b0000_0100; //發(fā)送16位字地址localparam st_addr8 = 8'b0000_1000; //發(fā)送8位字地址localparam st_data_wr = 8'b0001_0000; //寫數(shù)據(jù)(8 bit)localparam st_addr_rd = 8'b0010_0000; //發(fā)送器件地址讀localparam st_data_rd = 8'b0100_0000; //讀數(shù)據(jù)(8 bit)localparam st_stop = 8'b1000_0000; //結(jié)束I2C操作//reg definereg sda_dir ; //I2C數(shù)據(jù)(SDA)方向控制reg sda_out ; //SDA輸出信號(hào)reg st_done ; //狀態(tài)結(jié)束reg wr_flag ; //寫標(biāo)志reg [ 6:0] cnt ; //計(jì)數(shù)reg [ 7:0] cur_state ; //狀態(tài)機(jī)當(dāng)前狀態(tài)reg [ 7:0] next_state; //狀態(tài)機(jī)下一狀態(tài)reg [15:0] addr_t ; //地址reg [ 7:0] data_r ; //讀取的數(shù)據(jù)reg [ 7:0] data_wr_t ; //I2C需寫的數(shù)據(jù)的臨時(shí)寄存reg [ 9:0] clk_cnt ; //分頻時(shí)
標(biāo)簽：
iic
接口
e2prom
at24c64
verilog
驅(qū)動(dòng)
仿真
上傳時(shí)間：
2021-11-05
上傳用戶：
