117 lines
3.9 KiB
C
117 lines
3.9 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2016 Scott Shawcroft for Adafruit Industries
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* Copyright (c) 2019 Artur Pacholec
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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// TODO
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#include "py/mphal.h"
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#include "py/obj.h"
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#include "py/runtime.h"
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#include "fsl_device_registers.h"
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#include "reset.h"
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#include "shared-bindings/microcontroller/__init__.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-bindings/microcontroller/Processor.h"
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#include "supervisor/shared/safe_mode.h"
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#include "pins.h"
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void common_hal_mcu_delay_us(uint32_t delay) {
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mp_hal_delay_us(delay);
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}
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volatile uint32_t PLACE_IN_DTCM_BSS(nesting_count) = 0;
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void PLACE_IN_ITCM(common_hal_mcu_disable_interrupts)(void) {
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__disable_irq();
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__DMB();
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nesting_count++;
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}
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void PLACE_IN_ITCM(common_hal_mcu_enable_interrupts)(void) {
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if (nesting_count == 0) {
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// This is very very bad because it means there was mismatched disable/enables
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reset_into_safe_mode(SAFE_MODE_INTERRUPT_ERROR);
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}
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nesting_count--;
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if (nesting_count > 0) {
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return;
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}
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__DMB();
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__enable_irq();
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}
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void common_hal_mcu_on_next_reset(mcu_runmode_t runmode) {
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if (runmode == RUNMODE_BOOTLOADER) {
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if (!bootloader_available()) {
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mp_raise_ValueError(MP_ERROR_TEXT("Cannot reset into bootloader because no bootloader is present"));
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}
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// Pretend to be the first of the two reset presses needed to enter the
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// bootloader. That way one reset will end in the bootloader.
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DBL_TAP_REG = DBL_TAP_MAGIC;
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} else {
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// Set up the default.
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DBL_TAP_REG = DBL_TAP_MAGIC_QUICK_BOOT;
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}
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if (runmode == RUNMODE_SAFE_MODE) {
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safe_mode_on_next_reset(SAFE_MODE_PROGRAMMATIC);
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}
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}
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void common_hal_mcu_reset(void) {
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NVIC_SystemReset();
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}
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// The singleton microcontroller.Processor object, bound to microcontroller.cpu
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// It currently only has properties, and no state.
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const mcu_processor_obj_t common_hal_mcu_processor_obj = {
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.base = {
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.type = &mcu_processor_type,
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},
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};
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// NVM is only available on Express boards for now.
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#if CIRCUITPY_INTERNAL_NVM_SIZE > 0
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// The singleton nvm.ByteArray object.
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const nvm_bytearray_obj_t common_hal_mcu_nvm_obj = {
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.base = {
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.type = &nvm_bytearray_type,
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},
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.len = CIRCUITPY_INTERNAL_NVM_SIZE,
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.start_address = (uint8_t *)(FLASH_SIZE - CIRCUITPY_INTERNAL_NVM_SIZE)
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};
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#endif
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// This maps MCU pin names to pin objects.
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// NOTE: for all i.MX chips, order MUST match _iomuxc_sw_mux_ctl_pad enum
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STATIC const mp_rom_map_elem_t mcu_pin_global_dict_table[PIN_COUNT] = {
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#define FORMAT_PIN(pin_name) { MP_ROM_QSTR(MP_QSTR_##pin_name), MP_ROM_PTR(&pin_##pin_name) },
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#include "pin_names.h"
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#undef FORMAT_PIN
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};
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MP_DEFINE_CONST_DICT(mcu_pin_globals, mcu_pin_global_dict_table);
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