kopia lustrzana https://github.com/micropython/micropython
54 wiersze
2.1 KiB
C
54 wiersze
2.1 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) 2023 Arduino SA
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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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#include "py/mphal.h"
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#include "r_sce.h"
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// Key code for writing PRCR register.
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#define BSP_PRV_PRCR_KEY (0xA500U)
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#define BSP_PRV_PRCR_PRC1_UNLOCK ((BSP_PRV_PRCR_KEY) | 0x2U)
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#define BSP_PRV_PRCR_LOCK ((BSP_PRV_PRCR_KEY) | 0x0U)
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#define BOOT_DOUBLE_TAP_DATA (0x07738135)
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#define BOOT_DOUBLE_TAP_ADDR (*((volatile uint32_t *)&R_SYSTEM->VBTBKR[0]))
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void PORTENTA_C33_board_startup() {
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// Enable USB_BASE
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R_SYSTEM->PRCR = (uint16_t)BSP_PRV_PRCR_PRC1_UNLOCK;
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R_MSTP->MSTPCRB &= ~(1U << 11U);
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R_MSTP->MSTPCRB &= ~(1U << 12U);
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R_SYSTEM->PRCR = (uint16_t)BSP_PRV_PRCR_LOCK;
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// Re-enable IRQs after jump from the bootloader.
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__enable_irq();
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}
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void PORTENTA_C33_board_enter_bootloader(void) {
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R_SYSTEM->PRCR = (uint16_t)BSP_PRV_PRCR_PRC1_UNLOCK;
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BOOT_DOUBLE_TAP_ADDR = BOOT_DOUBLE_TAP_DATA;
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R_SYSTEM->PRCR = (uint16_t)BSP_PRV_PRCR_LOCK;
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NVIC_SystemReset();
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}
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