2022-06-06 10:23:09 +01:00
|
|
|
/*
|
|
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
|
|
*
|
|
|
|
* The MIT License (MIT)
|
|
|
|
*
|
|
|
|
* Copyright (c) 2020-2021 Damien P. George
|
|
|
|
*
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
|
|
* in the Software without restriction, including without limitation the rights
|
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
*
|
|
|
|
* The above copyright notice and this permission notice shall be included in
|
|
|
|
* all copies or substantial portions of the Software.
|
|
|
|
*
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
|
|
* THE SOFTWARE.
|
|
|
|
*/
|
|
|
|
|
2023-10-10 08:19:03 +01:00
|
|
|
// This file is never compiled standalone, it's included directly from
|
|
|
|
// extmod/machine_wdt.c via MICROPY_PY_MACHINE_WDT_INCLUDEFILE.
|
2022-06-06 10:23:09 +01:00
|
|
|
|
|
|
|
#include "sam.h"
|
|
|
|
|
|
|
|
#define MIN_TIMEOUT 512
|
|
|
|
#define MAX_TIMEOUT 16384
|
|
|
|
|
|
|
|
typedef struct _machine_wdt_obj_t {
|
|
|
|
mp_obj_base_t base;
|
|
|
|
} machine_wdt_obj_t;
|
|
|
|
|
2023-03-11 07:03:18 +00:00
|
|
|
// Calculate the floor value of log2(n)
|
|
|
|
mp_int_t log2i(mp_int_t num) {
|
|
|
|
mp_int_t res = 0;
|
|
|
|
for (; num > 1; num >>= 1) {
|
|
|
|
res += 1;
|
|
|
|
}
|
|
|
|
return res;
|
|
|
|
}
|
2022-06-06 10:23:09 +01:00
|
|
|
|
|
|
|
STATIC const machine_wdt_obj_t machine_wdt = {{&machine_wdt_type}};
|
|
|
|
|
|
|
|
STATIC void set_timeout(uint32_t timeout) {
|
|
|
|
// Set new timeout. Have to disable WDT first.
|
|
|
|
|
|
|
|
// Confine to the valid range
|
|
|
|
if (timeout < MIN_TIMEOUT) {
|
|
|
|
timeout = MIN_TIMEOUT;
|
|
|
|
} else if (timeout > MAX_TIMEOUT) {
|
|
|
|
timeout = MAX_TIMEOUT;
|
|
|
|
}
|
|
|
|
|
|
|
|
#if defined(MCU_SAMD21)
|
|
|
|
WDT->CTRL.reg = 0;
|
|
|
|
while (WDT->STATUS.reg & WDT_STATUS_SYNCBUSY) {
|
|
|
|
}
|
|
|
|
WDT->CONFIG.reg = log2i(timeout) - 3;
|
|
|
|
WDT->CTRL.reg = WDT_CTRL_ENABLE;
|
|
|
|
while (WDT->STATUS.reg & WDT_STATUS_SYNCBUSY) {
|
|
|
|
}
|
|
|
|
#elif defined(MCU_SAMD51)
|
|
|
|
WDT->CTRLA.reg = 0;
|
|
|
|
while (WDT->SYNCBUSY.reg & WDT_SYNCBUSY_ENABLE) {
|
|
|
|
}
|
|
|
|
WDT->CONFIG.reg = log2i(timeout) - 3;
|
|
|
|
WDT->CTRLA.reg = WDT_CTRLA_ENABLE;
|
|
|
|
while (WDT->SYNCBUSY.reg & WDT_SYNCBUSY_ENABLE) {
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
2023-10-10 08:19:03 +01:00
|
|
|
STATIC machine_wdt_obj_t *mp_machine_wdt_make_new_instance(mp_int_t id, mp_int_t timeout_ms) {
|
2022-06-06 10:23:09 +01:00
|
|
|
#if defined(MCU_SAMD51)
|
|
|
|
// Verify the WDT id. SAMD51 only, saving a few bytes for SAMD21
|
|
|
|
if (id != 0) {
|
|
|
|
mp_raise_msg_varg(&mp_type_ValueError, MP_ERROR_TEXT("WDT(%d) doesn't exist"), id);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
// Start the watchdog (timeout is in milliseconds).
|
|
|
|
// Configure the WDT
|
|
|
|
#if defined(MCU_SAMD21)
|
|
|
|
|
|
|
|
// Enable APBx clocks and GCLK clock
|
|
|
|
PM->APBAMASK.reg |= PM_APBAMASK_WDT;
|
|
|
|
GCLK->CLKCTRL.reg = GCLK_CLKCTRL_CLKEN | GCLK_CLKCTRL_GEN_GCLK8 | GCLK_CLKCTRL_ID_WDT;
|
|
|
|
|
|
|
|
#elif defined(MCU_SAMD51)
|
|
|
|
|
|
|
|
// Enable APBx clocks and 1kHz clock
|
|
|
|
MCLK->APBAMASK.reg |= MCLK_APBAMASK_WDT;
|
|
|
|
OSC32KCTRL->OSCULP32K.bit.EN1K = 1;
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
2023-10-10 08:19:03 +01:00
|
|
|
set_timeout(timeout_ms);
|
2022-06-06 10:23:09 +01:00
|
|
|
|
2023-10-10 08:19:03 +01:00
|
|
|
return (machine_wdt_obj_t *)&machine_wdt;
|
2022-06-06 10:23:09 +01:00
|
|
|
}
|
|
|
|
|
2023-10-10 08:19:03 +01:00
|
|
|
STATIC void mp_machine_wdt_feed(machine_wdt_obj_t *self) {
|
|
|
|
(void)self;
|
2022-06-06 10:23:09 +01:00
|
|
|
WDT->CLEAR.reg = 0xa5;
|
|
|
|
}
|
|
|
|
|
2023-10-10 08:19:03 +01:00
|
|
|
STATIC void mp_machine_wdt_timeout_ms_set(machine_wdt_obj_t *self, mp_int_t timeout_ms) {
|
|
|
|
(void)self;
|
|
|
|
set_timeout(timeout_ms);
|
2022-06-06 10:23:09 +01:00
|
|
|
}
|