Vivado HLS创建AXI LITE接口 |
您所在的位置：网站首页 › 数据线位宽 › Vivado HLS创建AXI LITE接口 |
Vivado HLS创建AXI LITE接口
|
HLS AXI LITE接口
AXI LITE接口每次只能传输一个数据，因此经常用来传输PS和PL之间的命令、状态等信息。 HLS代码如下 #include typedef ap_int dt; dt axilite(dt a,dt b,dt *c){ #pragma HLS INTERFACE s_axilite port=return bundle=BUS_CTRL #pragma HLS INTERFACE s_axilite port=a bundle=BUS_IN #pragma HLS INTERFACE s_axilite port=b bundle=BUS_IN #pragma HLS INTERFACE s_axilite port=c bundle=BUS_INOUT *c=a+b; return a*b; }生成的PS端的API函数见ip文件夹内的driver，具体路径记不清了。 Block Design连接AXI GPIO MASTER和AXI LITE SLAVE即可（RUN AUTO CONNECTION) CPU端代码 #include "xAxilite.h" // Device driver for HLS HW block #include "xparameters.h" // HLS HW instance XAxilite HlsAxilite; XAxilite_Config *AxilitePtr; int main() { int res_hw; // Look Up the device configuration AxilitePtr = XAxilite_LookupConfig(XPAR_XAXILITE_0_DEVICE_ID); if (!AxilitePtr) { print("ERROR: Lookup of accelerator configuration failed.\n\r"); return XST_FAILURE; } // Initialize the Device int status = XAxilite_CfgInitialize(&HlsAxilite, AxilitePtr); if (status != XST_SUCCESS) { print("ERROR: Could not initialize accelerator.\n\r"); exit(-1); } //Set the input parameters of the HLS block XAxilite_Set_a_V(&HlsAxilite, 24); XAxilite_Set_b_V(&HlsAxilite, 12); // Start the device and read the results XAxilite_Start(&HlsAxilite); do { res_hw = XAxilite_Get_c_V(&HlsAxilite); } while (XAxilite_Get_c_V_vld(&HlsAxilite) == 0); // wait for valid data output print("Detected HLS peripheral complete. Result received.\n\r"); printf("*c=%d\n",res_hw); printf("return=%d\n",XAxilite_Get_return(&HlsAxilite)); }c应该为a+b=36,return应为ab=288，输出结果不出所料： |
【本文地址】