63 lines
2.1 KiB
C++
63 lines
2.1 KiB
C++
#include <mdk/nrf52.h>
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#include <mdk/nrf52_bitfields.h>
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#include <nrf_soc.h>
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#include "Watchdog.h"
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using namespace Pinetime::Drivers;
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void Watchdog::Setup(uint8_t timeoutSeconds) {
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NRF_WDT->CONFIG &= ~(WDT_CONFIG_SLEEP_Msk << WDT_CONFIG_SLEEP_Pos);
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NRF_WDT->CONFIG |= (WDT_CONFIG_HALT_Run << WDT_CONFIG_SLEEP_Pos);
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NRF_WDT->CONFIG &= ~(WDT_CONFIG_HALT_Msk << WDT_CONFIG_HALT_Pos);
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NRF_WDT->CONFIG |= (WDT_CONFIG_HALT_Pause << WDT_CONFIG_HALT_Pos);
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/* timeout (s) = (CRV + 1) / 32768 */
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// JF : 7500 = 7.5s
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uint32_t crv = (((timeoutSeconds*1000u) << 15u) / 1000) - 1;
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NRF_WDT->CRV = crv;
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/* Enable reload requests */
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NRF_WDT->RREN = (WDT_RREN_RR0_Enabled << WDT_RREN_RR0_Pos);
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resetReason = ActualResetReason();
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}
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void Watchdog::Start() {
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NRF_WDT->TASKS_START = 1;
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}
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void Watchdog::Kick() {
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NRF_WDT->RR[0] = WDT_RR_RR_Reload;
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}
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Watchdog::ResetReasons Watchdog::ActualResetReason() const {
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uint32_t reason = NRF_POWER->RESETREAS;
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NRF_POWER->RESETREAS = 0xffffffff;
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if(reason & 0x01u) return ResetReasons::ResetPin;
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if((reason >> 1u) & 0x01u) return ResetReasons::Watchdog;
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if((reason >> 2u) & 0x01u) return ResetReasons::SoftReset;
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if((reason >> 3u) & 0x01u) return ResetReasons::CpuLockup;
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if((reason >> 16u) & 0x01u) return ResetReasons::SystemOff;
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if((reason >> 17u) & 0x01u) return ResetReasons::LpComp;
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if((reason) & 0x01u) return ResetReasons::DebugInterface;
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if((reason >> 19u) & 0x01u) return ResetReasons::NFC;
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return ResetReasons::HardReset;
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}
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const char *Watchdog::ResetReasonToString(Watchdog::ResetReasons reason) {
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switch(reason) {
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case ResetReasons::ResetPin: return "Reset pin";
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case ResetReasons::Watchdog: return "Watchdog";
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case ResetReasons::DebugInterface: return "Debug interface";
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case ResetReasons::LpComp: return "LPCOMP";
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case ResetReasons::SystemOff: return "System OFF";
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case ResetReasons::CpuLockup: return "CPU Lock-up";
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case ResetReasons::SoftReset: return "Soft reset";
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case ResetReasons::NFC: return "NFC";
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case ResetReasons::HardReset: return "Hard reset";
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default: return "Unknown";
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}
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}
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