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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
* Copyright (c) 2015 Daniel Campora
*
* 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.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include "py/mpconfig.h"
#include "py/obj.h"
#include "py/runtime.h"
#include "py/mphal.h"
#include "hw_ints.h"
#include "hw_types.h"
#include "hw_gpio.h"
#include "hw_memmap.h"
#include "hw_gprcm.h"
#include "hw_common_reg.h"
#include "pin.h"
#include "gpio.h"
#ifndef BOOTLOADER
#include "pybpin.h"
#include "pins.h"
#endif
#include "rom_map.h"
#include "prcm.h"
#include "pybuart.h"
#include "utils.h"
#include "mperror.h"
/******************************************************************************
DEFINE CONSTANTS
******************************************************************************/
#define MPERROR_TOOGLE_MS (50)
#define MPERROR_SIGNAL_ERROR_MS (1200)
#define MPERROR_HEARTBEAT_ON_MS (80)
#define MPERROR_HEARTBEAT_OFF_MS (3920)
/******************************************************************************
DECLARE PRIVATE DATA
******************************************************************************/
struct mperror_heart_beat {
uint32_t off_time;
uint32_t on_time;
bool beating;
bool enabled;
bool do_disable;
} mperror_heart_beat = {.off_time = 0, .on_time = 0, .beating = false, .enabled = false, .do_disable = false};
/******************************************************************************
DEFINE PUBLIC FUNCTIONS
******************************************************************************/
void mperror_init0 (void) {
#ifdef BOOTLOADER
// enable the system led and the safe boot pin peripheral clocks
MAP_PRCMPeripheralClkEnable(MICROPY_SYS_LED_PRCM, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
MAP_PRCMPeripheralClkEnable(MICROPY_SAFE_BOOT_PRCM, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
// configure the safe boot pin
MAP_PinTypeGPIO(MICROPY_SAFE_BOOT_PIN_NUM, PIN_MODE_0, false);
MAP_PinConfigSet(MICROPY_SAFE_BOOT_PIN_NUM, PIN_STRENGTH_4MA, PIN_TYPE_STD_PD);
MAP_GPIODirModeSet(MICROPY_SAFE_BOOT_PORT, MICROPY_SAFE_BOOT_PORT_PIN, GPIO_DIR_MODE_IN);
// configure the bld
MAP_PinTypeGPIO(MICROPY_SYS_LED_PIN_NUM, PIN_MODE_0, false);
MAP_PinConfigSet(MICROPY_SYS_LED_PIN_NUM, PIN_STRENGTH_6MA, PIN_TYPE_STD);
MAP_GPIODirModeSet(MICROPY_SYS_LED_PORT, MICROPY_SYS_LED_PORT_PIN, GPIO_DIR_MODE_OUT);
#else
// configure the system led
pin_config ((pin_obj_t *)&MICROPY_SYS_LED_GPIO, PIN_MODE_0, GPIO_DIR_MODE_OUT, PIN_TYPE_STD, 0, PIN_STRENGTH_6MA);
#endif
mperror_heart_beat.enabled = true;
mperror_heartbeat_switch_off();
}
void mperror_bootloader_check_reset_cause (void) {
// if we are recovering from a WDT reset, trigger
// a hibernate cycle for a clean boot
if (MAP_PRCMSysResetCauseGet() == PRCM_WDT_RESET) {
HWREG(0x400F70B8) = 1;
UtilsDelay(800000/5);
HWREG(0x400F70B0) = 1;
UtilsDelay(800000/5);
HWREG(0x4402E16C) |= 0x2;
UtilsDelay(800);
HWREG(0x4402F024) &= 0xF7FFFFFF;
// since the reset cause will be changed, we must store the right reason
// so that the application knows it when booting for the next time
PRCMSetSpecialBit(PRCM_WDT_RESET_BIT);
MAP_PRCMHibernateWakeupSourceEnable(PRCM_HIB_SLOW_CLK_CTR);
// set the sleep interval to 10ms
MAP_PRCMHibernateIntervalSet(330);
MAP_PRCMHibernateEnter();
}
}
void mperror_deinit_sfe_pin (void) {
// disable the pull-down
MAP_PinConfigSet(MICROPY_SAFE_BOOT_PIN_NUM, PIN_STRENGTH_4MA, PIN_TYPE_STD);
}
void mperror_signal_error (void) {
uint32_t count = 0;
while ((MPERROR_TOOGLE_MS * count++) < MPERROR_SIGNAL_ERROR_MS) {
// toogle the led
MAP_GPIOPinWrite(MICROPY_SYS_LED_PORT, MICROPY_SYS_LED_PORT_PIN, ~MAP_GPIOPinRead(MICROPY_SYS_LED_PORT, MICROPY_SYS_LED_PORT_PIN));
UtilsDelay(UTILS_DELAY_US_TO_COUNT(MPERROR_TOOGLE_MS * 1000));
}
}
void mperror_heartbeat_switch_off (void) {
if (mperror_heart_beat.enabled) {
mperror_heart_beat.on_time = 0;
mperror_heart_beat.off_time = 0;
MAP_GPIOPinWrite(MICROPY_SYS_LED_PORT, MICROPY_SYS_LED_PORT_PIN, 0);
}
}
void mperror_heartbeat_signal (void) {
if (mperror_heart_beat.do_disable) {
mperror_heart_beat.do_disable = false;
} else if (mperror_heart_beat.enabled) {
if (!mperror_heart_beat.beating) {
if ((mperror_heart_beat.on_time = mp_hal_ticks_ms()) - mperror_heart_beat.off_time > MPERROR_HEARTBEAT_OFF_MS) {
MAP_GPIOPinWrite(MICROPY_SYS_LED_PORT, MICROPY_SYS_LED_PORT_PIN, MICROPY_SYS_LED_PORT_PIN);
mperror_heart_beat.beating = true;
}
} else {
if ((mperror_heart_beat.off_time = mp_hal_ticks_ms()) - mperror_heart_beat.on_time > MPERROR_HEARTBEAT_ON_MS) {
MAP_GPIOPinWrite(MICROPY_SYS_LED_PORT, MICROPY_SYS_LED_PORT_PIN, 0);
mperror_heart_beat.beating = false;
}
}
}
}
void NORETURN __fatal_error(const char *msg) {
#ifdef DEBUG
if (msg != NULL) {
// wait for 20ms
UtilsDelay(UTILS_DELAY_US_TO_COUNT(20000));
mp_hal_stdout_tx_str("\r\nFATAL ERROR:");
mp_hal_stdout_tx_str(msg);
mp_hal_stdout_tx_str("\r\n");
}
#endif
// signal the crash with the system led
MAP_GPIOPinWrite(MICROPY_SYS_LED_PORT, MICROPY_SYS_LED_PORT_PIN, MICROPY_SYS_LED_PORT_PIN);
for ( ;; ) {__WFI();}
}
void __assert_func(const char *file, int line, const char *func, const char *expr) {
(void) func;
printf("Assertion failed: %s, file %s, line %d\n", expr, file, line);
__fatal_error(NULL);
}
void nlr_jump_fail(void *val) {
#ifdef DEBUG
char msg[64];
snprintf(msg, sizeof(msg), "uncaught exception %p\n", val);
__fatal_error(msg);
#else
__fatal_error(NULL);
#endif
}
void mperror_enable_heartbeat (bool enable) {
if (enable) {
#ifndef BOOTLOADER
// configure the led again
pin_config ((pin_obj_t *)&MICROPY_SYS_LED_GPIO, PIN_MODE_0, GPIO_DIR_MODE_OUT, PIN_TYPE_STD, 0, PIN_STRENGTH_6MA);
#endif
mperror_heart_beat.enabled = true;
mperror_heart_beat.do_disable = false;
mperror_heartbeat_switch_off();
} else {
mperror_heart_beat.do_disable = true;
mperror_heart_beat.enabled = false;
}
}
bool mperror_is_heartbeat_enabled (void) {
return mperror_heart_beat.enabled;
}
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