HLS设计流程shift_led实验

源文件

flowingLights.h

c复制代码

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#pragma once
#include <ap_int.h>
#define SPEED 100
void flowingLights(ap_uint<4>& leds);

flowingLights.cpp

c复制代码

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#include "flowingLights.h"
void flowingLights(ap_uint<4>& leds){
#pragma HLS INTERFACE ap_none port=led
#pragma HLS INTERFACE ap_ctrl_none port=return
	 static ap_uint<32> count = 0;   // 延时计数
	 static ap_uint<4> led_state = 0b1110;
	count++;
	if(count >= SPEED){
		led_state = led_state<<1 | led_state>>3 ;
		count =0;
	}
	leds =led_state;
}

C仿真

flowingLights_tb.cpp

c复制代码

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#include "flowingLights.h"
int main() {
    ap_uint<4> leds;
    for (int i = 0; i < SPEED * 5; i++) {
        flowingLights(leds);
        if (i % SPEED == 0) {
            std::cout << "Cycle " << i << ", leds = "  << leds.to_string(2) << std::endl;
        }
    }
    return 0;
}

bash复制代码

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D:/Xilinx/Vitis_HLS/2020.2/include/floating_point_v7_0_bitacc_cmodel.h:136:0: note: this is the location of the previous definition
 #define __GMP_LIBGMP_DLL 1
 
Cycle 0, leds = 0b1110
Cycle 100, leds = 0b1101
Cycle 200, leds = 0b1011
Cycle 300, leds = 0b0111
Cycle 400, leds = 0b1110
INFO: [SIM 211-1] CSim done with 0 errors.
INFO: [SIM 211-3] *************** CSIM finish ***************

编译生成flowingLights.v

复制代码

module flowingLights (
        ap_clk,
        ap_rst,
        leds
);
xxxx
endmodule //flowingLights

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Tang-Nano-1Ks上测试

导入脚本

bash复制代码

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set src_dir "D:/workspace/gitee/0/ming_tang_nano_1k/hls_led/src"
set rtl_dir "D:/workspace/gitee/0/ming_tang_nano_1k/hls_led/src/rtl"
add_file D:/fpga_progect/flowingLights/hls/flowingLights/solution1/impl/verilog/flowingLights.v
add_file D:/workspace/gitee/0/ming_tang_nano_1k/hls_led/src/rtl/TANG_FPGA_Demo_Top.v
add_file  $src_dir/vio_uart_prj.cst
add_file  $src_dir/vio_uart_prj.sdc

hls_led.cst

bash复制代码

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IO_LOC "CLOCK_XTAL_27MHz" 47;
IO_PORT "CLOCK_XTAL_27MHz" IO_TYPE=LVCMOS33 PULL_MODE=UP;


IO_LOC "RESET" 13;
IO_PORT "RESET" IO_TYPE=LVCMOS33 PULL_MODE=UP;


IO_LOC "LED[3]" 40;
IO_PORT "LED[3]" IO_TYPE=LVCMOS33 PULL_MODE=UP DRIVE=8;
IO_LOC "LED[2]" 11;
IO_PORT "LED[2]" IO_TYPE=LVCMOS33 PULL_MODE=UP DRIVE=8;
IO_LOC "LED[1]" 10;
IO_PORT "LED[1]" IO_TYPE=LVCMOS33 PULL_MODE=UP DRIVE=8;
IO_LOC "LED[0]" 9;
IO_PORT "LED[0]" IO_TYPE=LVCMOS33 PULL_MODE=UP DRIVE=8;

hls_led.sdc

bash复制代码

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create_clock -name CLOCK_XTAL_27MHz -period 37.037 -waveform {0 18.518} [get_ports {CLOCK_XTAL_27MHz}]

TANG_FPGA_Demo_Top.v

verilog复制代码

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module TANG_FPGA_Demo_Top
(
    input CLOCK_XTAL_27MHz,
	input RESET,
    output  [3:0] LED // 110 R, 101 B, 011 G
);


flowingLights u_flowingLights (
    .ap_clk   (CLOCK_XTAL_27MHz),
    .ap_rst(RESET),
    .leds  (LED)
);

endmodule