【瑞萨RA4系列开发板体验】RA4M2 之WDT

RA助手 · 发表于 2023-2-2 16:07:26

【瑞萨RA4系列开发板体验】RA4M2 之WDT
作者：jf_15811252

WDT简介
瑞萨RA4M2的窗口看门狗定时器（WDT）是一个14位递减计数器，可用于在计数器下溢时复位MCU，如果系统失控导致WDT无法在窗口值间刷新计数器，就会发生不可屏蔽中断或看门狗定时器复位。
WDT介绍

WDT框图：

WDT刷新寄存器说明：

WDT控制寄存器说明：

RASC新建WDT工程
新建WDT工程：

选择开发板型号：

选择闪灯工程：

生成WDT代码：
点击”stacks”，点击”New Stack”，在弹出的界面中，选择”Monitoring”，然后选中”Watchdog(r_wdt)”或选择”Search”然后搜索”WDT”关键字，然后点击”Generate Project Context”生成代码。

添加WDT代码

/***********************************************************************************************************************
* Copyright [2020-2022] Renesas Electronics Corporation and/or its affiliates. All Rights Reserved.
*
* This software and documentation are supplied by Renesas Electronics America Inc. and may only be used with products
* of Renesas Electronics Corp. and its affiliates ("Renesas"). No other uses are authorized. Renesas products are
* sold pursuant to Renesas terms and conditions of sale. Purchasers are solely responsible for the selection and use
* of Renesas products and Renesas assumes no liability. No license, express or implied, to any intellectual property
* right is granted by Renesas. This software is protected under all applicable laws, including copyright laws. Renesas
* reserves the right to change or discontinue this software and/or this documentation. THE SOFTWARE AND DOCUMENTATION
* IS DELIVERED TO YOU "AS IS," AND RENESAS MAKES NO REPRESENTATIONS OR WARRANTIES, AND TO THE FULLEST EXTENT
* PERMISSIBLE UNDER APPLICABLE LAW, DISCLAIMS ALL WARRANTIES, WHETHER EXPLICITLY OR IMPLICITLY, INCLUDING WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT, WITH RESPECT TO THE SOFTWARE OR
* DOCUMENTATION. RENESAS SHALL HAVE NO LIABILITY ARISING OUT OF ANY SECURITY VULNERABILITY OR BREACH. TO THE MAXIMUM
* EXTENT PERMITTED BY LAW, IN NO EVENT WILL RENESAS BE LIABLE TO YOU IN CONNECTION WITH THE SOFTWARE OR DOCUMENTATION
* (OR ANY PERSON OR ENTITY CLAIMING RIGHTS DERIVED FROM YOU) FOR ANY LOSS, DAMAGES, OR CLAIMS WHATSOEVER, INCLUDING,
* WITHOUT LIMITATION, ANY DIRECT, CONSEQUENTIAL, SPECIAL, INDIRECT, PUNITIVE, OR INCIDENTAL DAMAGES; ANY LOST PROFITS,
* OTHER ECONOMIC DAMAGE, PROPERTY DAMAGE, OR PERSONAL INJURY; AND EVEN IF RENESAS HAS BEEN ADVISED OF THE POSSIBILITY
* OF SUCH LOSS, DAMAGES, CLAIMS OR COSTS.
**********************************************************************************************************************/
#include "hal_data.h"
void R_BSP_WarmStart(bsp_warm_start_event_t event);
extern bsp_leds_t g_bsp_leds;
/*******************************************************************************************************************//**
* [url=home.php?mod=space&uid=2666770]@Brief[/url] Blinky example application
*
* Blinks all leds at a rate of 1 second using the software delay function provided by the BSP.
*
**********************************************************************************************************************/
void hal_entry (void)
{
R_BSP_PinAccessEnable();
(void)R_WDT_Open(&g_wdt0_ctrl, &g_wdt0_cfg);
(void) R_WDT_Refresh(&g_wdt0_ctrl);
while (1)
{
(void)R_WDT_Refresh(&g_wdt0_ctrl);
R_BSP_PinWrite(BSP_IO_PORT_04_PIN_15, BSP_IO_LEVEL_LOW);
R_BSP_SoftwareDelay(500, 1000);
R_BSP_PinWrite(BSP_IO_PORT_04_PIN_15, BSP_IO_LEVEL_HIGH);
R_BSP_SoftwareDelay(500, 1000);
}
}