紫光同创PGL22G开发平台试用连载(4)-- 移动方块

c4982212330 提交于 周一, 09/14/2020
紫光同创PGL22G开发平台试用连载(4)-- 移动方块

各位好:

又开始新一期的更新了,移植说做个有意思的项目,奈何是在加班严重,没有办法,只能带来点小玩意了,本期就在官方提供的教程基础上改一个吧;

官方提供的教程是让显示屏上显示彩条,如图所示:

“”

我在这个实验的基础上,增加一个移动的方块,碰到屏端自动改变方向;

“”

视频上传B站,链接:https://www.bilibili.com/video/BV1ft4y1i7Tw。

改动内容为:

1、将video_define.v中的分辨率更改为:`define VIDEO_1024_768,显示输出分辨率为1024_768,默认的1280_720的分辨率会出现严重的时序违例,无法正常显示;

2、根据分辨率将PLL的输出两路输出clkout0和clkout1分别调整为60Mhz和300MHz;

3、修改color_bar.v代码,将源代码中的最后一个always块修改如下:

reg [11:0] x;

reg flag_x;

reg [11:0] y;

reg flag_y;

 

always @(posedge clk or posedge rst) begin

if (rst == 1'b1) begin

x <='d0;

end

else if (flag_x == 1'b0 && (v_cnt == V_FP + V_SYNC + V_BP - 1) && (h_cnt == H_FP - 1)) begin

x<= x+ 1'b1;

end

else if(flag_x == 1'b1 && (v_cnt == V_FP + V_SYNC + V_BP - 1) && (h_cnt == H_FP - 1)) begin

x <= x -1'b1;

end

end

 

always @(posedge clk or posedge rst) begin

if (rst == 1'b1) begin

flag_x <= 1'b0;

end

else if (flag_x == 1'b0 && (v_cnt == V_FP + V_SYNC + V_BP - 1) && (h_cnt == H_FP - 1) && x == (H_ACTIVE - 201)) begin

flag_x <= 1'b1;

end

else if (flag_x == 1'b1 && (v_cnt == V_FP + V_SYNC + V_BP - 1) && (h_cnt == H_FP - 1) && x=='d1) begin

flag_x <= 1'b0;

end

end

 

always @(posedge clk or posedge rst) begin

if (rst == 1'b1) begin

y <= 'd0;

end

else if (flag_y == 1'b0 && (v_cnt == V_FP + V_SYNC + V_BP - 1) && (h_cnt == H_FP - 1)) begin

y <= y + 1'b1;

end

else if (flag_y == 1'b1 && (v_cnt == V_FP + V_SYNC + V_BP - 1) && (h_cnt == H_FP - 1)) begin

y <= y - 1'b1;

end

end

 

always @(posedge clk or posedge rst) begin

if (rst == 1'b1) begin

flag_y <= 1'b0;

end

else if (flag_y == 1'b0 && (v_cnt == V_FP + V_SYNC + V_BP - 1) && (h_cnt == H_FP - 1) && y==(V_ACTIVE - 201) ) begin

flag_y <= 1'b1;

end

else if (flag_y == 1'b1 && (v_cnt == V_FP + V_SYNC + V_BP - 1) && (h_cnt == H_FP - 1) && y=='d1 ) begin

flag_y <= 1'b0;

end

end

 

always@(posedge clk or posedge rst)

begin

if(rst == 1'b1)

begin

rgb_r_reg <= 8'h00;

rgb_g_reg <= 8'h00;

rgb_b_reg <= 8'h00;

end

else if(video_active)

if((h_cnt >= H_FP[11:0] + H_SYNC[11:0] + H_BP[11:0] -1 + x) && (h_cnt <=H_FP[11:0] + H_SYNC[11:0] + H_BP[11:0] -1 + 200 + x) && (v_cnt >=( V_FP + V_SYNC + V_BP - 1 + y)) && (v_cnt <=( 200 + V_FP + V_SYNC + V_BP - 1 + y)))

begin

rgb_r_reg <= WHITE_R;

rgb_g_reg <= WHITE_G;

rgb_b_reg <= WHITE_B;

end

else if((active_x >= 12'd0)&(active_x < {H_ACTIVE[14:3]}))//0-1

begin

rgb_r_reg <= WHITE_R;

rgb_g_reg <= WHITE_G;

rgb_b_reg <= 8'B01111111;//WHITE_B;

end

 

else if((active_x >= {H_ACTIVE[14:3]})&(active_x < {H_ACTIVE[13:3],1'b0}))//1-2

begin

rgb_r_reg <= YELLOW_R;

rgb_g_reg <= YELLOW_G;

rgb_b_reg <= YELLOW_B;

end

else if((active_x >= {H_ACTIVE[13:3],1'b0})&(active_x < {H_ACTIVE[13:3],1'b0} + {H_ACTIVE[14:3]}))//2-3

begin

rgb_r_reg <= CYAN_R;

rgb_g_reg <= CYAN_G;

rgb_b_reg <= CYAN_B;

end

else if((active_x >= {H_ACTIVE[13:3],1'b0} + {H_ACTIVE[14:3]})&(active_x < {H_ACTIVE[12:3],2'b0}))//3-4

begin

rgb_r_reg <= GREEN_R;

rgb_g_reg <= GREEN_G;

rgb_b_reg <= GREEN_B;

end

else if((active_x >= {H_ACTIVE[12:3],2'b0})&(active_x < {H_ACTIVE[12:3],2'b0} + {H_ACTIVE[14:3]}))//4-5

begin

rgb_r_reg <= MAGENTA_R;

rgb_g_reg <= MAGENTA_G;

rgb_b_reg <= MAGENTA_B;

end

else if((active_x >= ({H_ACTIVE[12:3],2'b0} + {H_ACTIVE[14:3]}))&(active_x < ({H_ACTIVE[12:3],2'b0} + {H_ACTIVE[13:3],1'b0})))//5-6

begin

rgb_r_reg <= RED_R;

rgb_g_reg <= RED_G;

rgb_b_reg <= RED_B;

end

else if((active_x >= {H_ACTIVE[12:3],2'b0} + {H_ACTIVE[13:3],1'b0})&(active_x < {H_ACTIVE[11:3],3'b0} - {H_ACTIVE[14:3]}))//6-7

begin

rgb_r_reg <= BLUE_R;

rgb_g_reg <= BLUE_G;

rgb_b_reg <= BLUE_B;

end

 

else if((active_x >= {H_ACTIVE[11:3],3'b0} - {H_ACTIVE[14:3]}))

begin

rgb_r_reg <= BLACK_R;

rgb_g_reg <= BLACK_G;

rgb_b_reg <= BLACK_B;

end

else

begin

rgb_r_reg <= rgb_r_reg;

rgb_g_reg <= rgb_g_reg;

rgb_b_reg <= rgb_b_reg;

end

 

else

begin

rgb_r_reg <= 8'h00;

rgb_g_reg <= 8'h00;

rgb_b_reg <= 8'h00;

end

end

增加了一个移动方块的控制逻辑,方块大小为200*200,碰到显示范围的边缘自动向反方向移动;

同时为了尽可能的优化时序,将原有代码中的乘法和除法运算均更改为移位操作。

相关文章

Digi-Key