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8f0fa9411c
The bootloader itself is called `uf2-samdx1` and supports both samd21 and samd51. Rename the module accordingly.
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/*
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* Copyright (C) 2019 Inria
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* 2019 Kees Bakker, SODAQ
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup boards_common
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* @{
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* @file
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* @brief Board common implementations for managing an Arduino bootloader
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*
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* @author Alexandre Abadie <alexandre.abadie@inria.fr>
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* @author Kees Bakker <kees@sodaq.com>
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*
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* @}
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*/
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#ifdef MODULE_USB_BOARD_RESET
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#define USB_H_USER_IS_RIOT_INTERNAL
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#include "cpu.h"
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#include "usb_board_reset.h"
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#ifdef HMCRAMC0_ADDR
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#define DBL_TAP_PTR ((volatile uint32_t *)(HMCRAMC0_ADDR + HMCRAMC0_SIZE - 4))
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#else
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#define DBL_TAP_PTR ((volatile uint32_t *)(HSRAM_ADDR + HSRAM_SIZE - 4))
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#endif
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#ifdef BOOTLOADER_UF2
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#define SAMD21_DOUBLE_TAP_ADDR DBL_TAP_PTR
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#define SAMD21_DOUBLE_TAP_MAGIC_NUMBER (0xF01669EFUL)
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#else
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#define SAMD21_DOUBLE_TAP_ADDR (0x20007FFCUL)
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#define SAMD21_DOUBLE_TAP_MAGIC_NUMBER (0x07738135UL)
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#endif
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void usb_board_reset_in_bootloader(void)
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{
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/* The Arduino bootloader checks for a magic number in SRAM to remain in
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bootloader mode.
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See
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https://github.com/arduino/ArduinoCore-samd/blob/master/bootloaders/zero/board_definitions_arduino_mkr1000.h#L38
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and
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https://github.com/arduino/ArduinoCore-samd/blob/master/bootloaders/zero/main.c#L94
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for implementation details. */
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uint32_t *reset_addr = (uint32_t *)SAMD21_DOUBLE_TAP_ADDR;
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*reset_addr = (uint32_t)SAMD21_DOUBLE_TAP_MAGIC_NUMBER;
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usb_board_reset_in_application();
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}
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#else
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typedef int dont_be_pedantic;
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#endif /* MODULE_USB_BOARD_RESET */
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