有时候在项目中需要在SystemVerilog中读取或者写入二进制文件，今天就分享两段代码供大家直接使用。
function void writing_binary_file(int unsigned total_bytes_to_write=32);int fwrite;bit [7:0] wdata;//Open file with binary write mode("wb"), b here specifies binaryfwrite=$fopen("binary_file.bin","wb");if(fwrite==0)`uvm_error("NO_FILE_FOUND","Couldn't open file binary_file.bin for writing")//iterate until all intended bytes are writtenfor(int i=0,i<total_bytes_to_write,i++) begin//generate current random byte to writewdata=$urandom_range(0,255);//fwrite with %c writes only 1 byte at a time, use "%u" format for writing 32bit data$fwrite(fwrite,"%c",wdata);//Note that fwrite doesn't introduce newline character unless added with \nend//close the file$fclose(fwrite)endfunction
function void read_binary_file();int fread;bit [7:0] rdata;int unsigned line_count;line_count=0;//Open file with binary read mode("rb"), b here specifies binaryfread=$fopen("binary_file.bin","rb");if(fread==0)`uvm_error("NO_FILE_FOUND","Couldn't open file binary_file.bin for reading")//read until end of file is reachedwhile(!$feof(fread)) begin//fgets reads one line at once and $fgetc reads a byte (a character) at once$fgets(rdata,fread);line_count+=1;//Do what's required of data here`uvm_info(get_name(),$sformatf("byte number %0d, Value= %08x",line_count,rdata),UVM_MEDIUM)end//close the opened binary file$fclose(fread)endfunction
4.欢迎关注微信公众号《芯片验证日记》
5.欢迎加入知识星球《数字芯片前端验证》
另外，由于微信群已经超过200人，添加小编的微信，拉你进入WX学习群。
