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circuitpython/ports/nrf/supervisor/port.c

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4.4 KiB

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
*
* 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 <stdint.h>
#include "supervisor/port.h"
#include "boards/board.h"
#include "nrfx/hal/nrf_power.h"
#include "nrfx/drivers/include/nrfx_power.h"
#include "nrf/cache.h"
#include "nrf/clocks.h"
#include "nrf/power.h"
#include "nrf/timers.h"
#include "shared-module/gamepad/__init__.h"
#include "common-hal/microcontroller/Pin.h"
#include "common-hal/_bleio/__init__.h"
#include "common-hal/analogio/AnalogIn.h"
#include "common-hal/busio/I2C.h"
#include "common-hal/busio/SPI.h"
#include "common-hal/busio/UART.h"
#include "common-hal/pulseio/PWMOut.h"
#include "common-hal/pulseio/PulseOut.h"
#include "common-hal/pulseio/PulseIn.h"
#include "common-hal/rtc/RTC.h"
#include "common-hal/neopixel_write/__init__.h"
#include "tick.h"
#include "shared-bindings/rtc/__init__.h"
#ifdef CIRCUITPY_AUDIOBUSIO
#include "common-hal/audiobusio/I2SOut.h"
#endif
#ifdef CIRCUITPY_AUDIOPWMIO
#include "common-hal/audiopwmio/PWMAudioOut.h"
#endif
static void power_warning_handler(void) {
reset_into_safe_mode(BROWNOUT);
}
safe_mode_t port_init(void) {
nrf_peripherals_clocks_init();
// If GPIO voltage is set wrong in UICR, this will fix it, and
// will also do a reset to make the change take effect.
nrf_peripherals_power_init();
nrfx_power_pofwarn_config_t power_failure_config;
power_failure_config.handler = power_warning_handler;
power_failure_config.thr = NRF_POWER_POFTHR_V27;
#if NRF_POWER_HAS_VDDH
power_failure_config.thrvddh = NRF_POWER_POFTHRVDDH_V27;
#endif
nrfx_power_pof_init(&power_failure_config);
nrfx_power_pof_enable(&power_failure_config);
nrf_peripherals_enable_cache();
// Configure millisecond timer initialization.
tick_init();
#if CIRCUITPY_ANALOGIO
analogin_init();
#endif
#if CIRCUITPY_RTC
rtc_init();
#endif
return NO_SAFE_MODE;
}
void reset_port(void) {
#ifdef CIRCUITPY_GAMEPAD_TICKS
gamepad_reset();
#endif
#if CIRCUITPY_BUSIO
i2c_reset();
spi_reset();
uart_reset();
#endif
#if CIRCUITPY_NEOPIXEL_WRITE
neopixel_write_reset();
#endif
#if CIRCUITPY_AUDIOBUSIO
i2s_reset();
#endif
#if CIRCUITPY_AUDIOPWMIO
audiopwmout_reset();
#endif
#if CIRCUITPY_PULSEIO
pwmout_reset();
pulseout_reset();
pulsein_reset();
#endif
timers_reset();
#if CIRCUITPY_RTC
rtc_reset();
#endif
#if CIRCUITPY_BLEIO
bleio_reset();
#endif
reset_all_pins();
}
void reset_to_bootloader(void) {
enum { DFU_MAGIC_SERIAL = 0x4e };
NRF_POWER->GPREGRET = DFU_MAGIC_SERIAL;
reset_cpu();
}
void reset_cpu(void) {
NVIC_SystemReset();
}
uint32_t *port_heap_get_bottom(void) {
return port_stack_get_limit();
}
uint32_t *port_heap_get_top(void) {
return port_stack_get_top();
}
uint32_t *port_stack_get_limit(void) {
return &_ebss;
}
uint32_t *port_stack_get_top(void) {
return &_estack;
}
extern uint32_t _ebss;
// Place the word to save just after our BSS section that gets blanked.
void port_set_saved_word(uint32_t value) {
_ebss = value;
}
uint32_t port_get_saved_word(void) {
return _ebss;
}
void HardFault_Handler(void) {
reset_into_safe_mode(HARD_CRASH);
while (true) {
asm("nop;");
}
}