Sipeed 高云GW2A SVPWM发波测试

哈喽，大家好~

这里分享一下将之前的计算出来的SVPWM通过IO发送出来。

先用锯齿载波测试一下，实现方式如下：

always @(posedge clk) begin
    if (!reset) begin
        counter_18k <= 32'd0;
    end
    else if (counter_18k >= count_value_18k) begin
        svpwm1_reg <= svpwm1;
        svpwm2_reg <= svpwm2;
        svpwm3_reg <= svpwm3;
        counter_18k <= 32'd0;
    end
    else begin
        counter_18k <= counter_18k + 1'b1;
    end
end

always @(posedge clk) begin
    if ( counter_18k >= svpwm1_reg ) begin
        pwm_out_reg[0] = 1'd1;
    end
    else begin
        pwm_out_reg[0] = 1'd0;
    end
end

always @(posedge clk) begin
    if ( counter_18k >= svpwm2_reg ) begin
        pwm_out_reg[1] = 1'd1;
    end
    else begin
        pwm_out_reg[1] = 1'd0;
    end
end

always @(posedge clk) begin
    if ( counter_18k >= svpwm3_reg ) begin
        pwm_out_reg[2] = 1'd1;
    end
    else begin
        pwm_out_reg[2] = 1'd0;
    end
end

然后将pwm_out_reg信号用IO输出看一下效果：

用示波器看一下发波情况：

从上面可以看出发波符合预期结果。

然后将锯齿载波修改成三角载波即可。

欢迎留言交流。