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