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https://github.com/handsomezhuzhu/2025-yatcpu.git
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140 lines
4.2 KiB
C
140 lines
4.2 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2009 - 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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/*
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* helloworld.c: simple test application
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*
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* This application configures UART 16550 to baud rate 9600.
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* PS7 UART (Zynq) is not initialized by this application, since
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* bootrom/bsp configures it to baud rate 115200
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*
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* ------------------------------------------------
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* | UART TYPE BAUD RATE |
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* ------------------------------------------------
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* uartns550 9600
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* uartlite Configurable only in HW design
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* ps7_uart 115200 (configured by bootrom/bsp)
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*/
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#include <stdio.h>
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#include "platform.h"
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#include "xil_printf.h"
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//#include "xuartps_hw.h" // already include in xuartps.h
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#include "xuartps.h"
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#include "xparameters.h"
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XUartPs uart_ps; // instance of the UART device
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int main()
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{
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init_platform();
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xil_printf("\nHello World\n\r");
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// test on UART ps
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int BUFFER_SIZE = 16; // do not set too much to overflow FIFO
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char send_buffer[BUFFER_SIZE + 1];
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char recv_buffer[BUFFER_SIZE + 1];
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int status = 0;
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XUartPs_Config *config;
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for (int i = 0; i < BUFFER_SIZE; i++) send_buffer[i] = i % 256;
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config = XUartPs_LookupConfig(XPAR_XUARTPS_0_BASEADDR); // CHANGE UART PORT HERE!!!
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if (config == NULL) {
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printf("Error in config lookup!\n");
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return XST_FAILURE;
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}
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status = XUartPs_CfgInitialize(&uart_ps, config, config->BaseAddress);
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if (status != XST_SUCCESS) {
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printf("Error in cfg initialize!\n");
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return XST_FAILURE;
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}
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XUartPs_SetBaudRate(&uart_ps, 115200);
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/* Check hardware build. */
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status = XUartPs_SelfTest(&uart_ps);
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if (status != XST_SUCCESS) {
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printf("Error in self test!\n");
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return XST_FAILURE;
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}
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/* Configure UART mode */
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int mode = XUartPs_ReadReg(uart_ps.Config.BaseAddress, XUARTPS_MR_OFFSET);
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printf("original mode = 0x%x\n", mode);
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XUartPs_WriteReg(uart_ps.Config.BaseAddress, XUARTPS_MR_OFFSET,
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(XUARTPS_MR_STOPMODE_2_BIT | XUARTPS_MR_PARITY_NONE | XUARTPS_MR_CHARLEN_8_BIT));
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XUartPs_SetOperMode(&uart_ps, XUARTPS_OPER_MODE_NORMAL);
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int recv_cnt = 0;
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while (1) {
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int recved = XUartPs_Recv(&uart_ps, (u8*)(recv_buffer + 0), BUFFER_SIZE);
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recv_cnt += recved;
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recv_buffer[recv_cnt] = 0; // end
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if (recv_cnt >= 1) {
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// printf("%s", recv_buffer);
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// printf("%i\n", recv_buffer[0]);
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/* print string manually */
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for (int j = 0; j < BUFFER_SIZE; j++) {
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if (recv_buffer[j] != 0) {
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printf("%c", recv_buffer[j]);
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} else {
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break;
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}
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}
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recv_cnt = 0;
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}
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}
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/* Restore to normal mode. */
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XUartPs_SetOperMode(&uart_ps, XUARTPS_OPER_MODE_NORMAL);
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cleanup_platform();
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return 0;
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}
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