136 lines
4.0 KiB
C
136 lines
4.0 KiB
C
/*
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* @Author : stark1898y 1658608470@qq.com
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* @Date : 2024-12-15 16:13:41
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* @LastEditors : stark1898y 1658608470@qq.com
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* @LastEditTime : 2025-05-16 10:55:30
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* @FilePath : \BLE_TYQ_CH584M\BSP\src\bsp_iwdg.c
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* @Description :
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*
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* Copyright (c) 2024 by yzy, All Rights Reserved.
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*/
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#include "bsp_iwdg.h"
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#include "bsp_uart.h"
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#include "log.h"
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// https://www.cnblogs.com/debugdabiaoge/p/17580033.html
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// https://www.cnblogs.com/risc5-ble/p/17853714.html
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#undef LOG_ENABLE
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#define LOG_ENABLE 1
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#undef LOG_TAG
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#define LOG_TAG "idwg"
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uint8_t IWDGTaskId;
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uint16_t IWDG_ProcessEvent(uint8_t task_id, uint16_t events)
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{
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if (events & IWIG_FEED_EVENT)
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{
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FEED_IWDG();
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logDebug("IWDG feed");
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tmos_start_task(task_id, IWIG_FEED_EVENT, MS1_TO_SYSTEM_TIME(IWDG_FEED_MS));
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return (events ^ IWIG_FEED_EVENT);
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}
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return 0;
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}
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// 32k rc
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// div 0:4 | 1:8 | 2:16 | 3:32 |
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// 4:64 | 5:128 | 6:256 | 7:512(32K分频512，时钟62.5Hz) |
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// reload max 4095
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// 独立看门狗（IWDG）由专用的内部低速时钟（LSI）驱动，能够在低功耗模式下正常工作。
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// 根据寄存器描述，IWDG最大时间可以是(0xFFF/(32K/512))=65.52s
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void IWDG_Init(uint16_t ms)
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{
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uint16_t div = 512;
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// float tick_ms = 1000 / (32000 / 512);
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uint8_t tick_ms = 16;
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uint16_t reload = (ms / tick_ms) + 1;
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// 解除IWDG保护
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R32_IWDG_KR = 0x5555;
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R32_IWDG_CFG = (RB_PR & (div << 12)) | (RB_STOP_EN) | (reload & RB_RLR);
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// R32_IWDG_CFG |= (7 << 12); // 32K分频512，时钟62.5Hz
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// R32_IWDG_CFG &= 0xFFFFF000;
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// // R32_IWDG_CFG |= 0x7D * 3; // 看门狗时间约6 s（0x10/(32K/512))
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// R32_IWDG_CFG |= reload;
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// 开启IWDG保护
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R32_IWDG_KR = 0xCCCC;
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logDebug("IWDG = %d, %.1f ms", reload, (reload * 1000) / 62.5);
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IWDGTaskId = TMOS_ProcessEventRegister(IWDG_ProcessEvent);
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// tmos_set_event(IWDGTaskId, IWIG_FEED_EVENT);
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tmos_start_task(IWDGTaskId, IWIG_FEED_EVENT, MS1_TO_SYSTEM_TIME(IWDG_FEED_MS));
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}
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// #define RB_RESET_FLAG 0x07 // RO: recent reset flag
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// #define RST_FLAG_SW 0x00
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// #define RST_FLAG_RPOR 0x01
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// #define RST_FLAG_WTR 0x02
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// #define RST_FLAG_MR 0x03
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// //#define RST_FLAG_GPWSM 0x04 // RO, power on reset flag during sleep/shutdown: 0=no power on reset during sleep/shutdown, 1=power on reset occurred during sleep/shutdown
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// #define RST_FLAG_GPWSM 0x05
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// // RB_RESET_FLAG: recent reset flag
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// // 000 - SR, software reset, by RB_SOFTWARE_RESET=1 @RB_WDOG_RST_EN=0
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// // 001 - RPOR, real power on reset
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// // 010 - WTR, watch-dog timer-out reset
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// // 011 - MR, external manual reset by RST pin input low
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// // 101 - GRWSM, global reset by waking under shutdown mode
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// 1?? - LRW, power on reset occurred during sleep
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// 打印复位状态寄存器，显示复位原因
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// 最近一次复位状态：
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// 000：软件复位 SR（RB_WDOG_RST_EN=0时软件复位可产生此状态，否则可复位但不产生此状态）；
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// 001：上电复位 RPOR；
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// 010：看门狗超时复位 WTR；
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// 011：外部手动复位 MR；
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// 101：从下电模式唤醒时的复位 GRWSM；
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// 100/110/111：唤醒复位 LRW，且此前的上一次复位分别是 SR/WTR/MR。
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void ShowRestartReason(void)
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{
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uint8_t reason = R8_RESET_STATUS&0x07;
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logDebug("R8_RESET_STATUS = %02x", reason);
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switch (reason)
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{
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case RST_FLAG_SW:
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logDebug("RST_FLAG_SW");
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break;
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case RST_FLAG_RPOR:
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logDebug("RST_FLAG_RPOR");
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break;
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case RST_FLAG_WTR:
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logDebug("RST_FLAG_WTR");
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break;
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case RST_FLAG_MR:
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logDebug("RST_FLAG_MR");
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break;
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case RST_FLAG_GPWSM:
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logDebug("RST_FLAG_GPWSM");
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break;
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case 0x04:
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logDebug("LRW, last SR");
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break;
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case 0x06:
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logDebug("LRW, last WTR");
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break;
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case 0x07:
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logDebug("LRW, last MR");
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default:
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break;
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}
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}
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