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The Echo R1 is a new open-hardware music player design, based on the STM32H743 microcontroller. Schematics and hardware documentation for it can be found here: - https://github.com/amachronic/echoplayer This is an incomplete port. The bootloader can be loaded using OpenOCD and it can draw to the LCD using SPI. SDRAM is working but hasn't been extensively tested. Change-Id: Ifd2bee15c49868fbc989683d3ca14dce48bf3e18
76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2025 by Aidan MacDonald
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "system.h"
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struct armv7m_exception_frame
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{
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unsigned long r0;
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unsigned long r1;
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unsigned long r2;
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unsigned long r3;
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unsigned long r12;
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unsigned long lr;
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unsigned long pc;
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unsigned long xpsr;
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};
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void UIE(void)
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{
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while (1);
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}
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void __div0(void)
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{
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while (1);
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}
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void __aeabi_idiv0(void) __attribute__((alias("__div0")));
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void __aeabi_ldiv0(void) __attribute__((alias("__div0")));
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#define ATTR_IRQ_HANDLER __attribute__((weak, alias("UIE")))
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void nmi_handler(void) ATTR_IRQ_HANDLER;
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void hardfault_handler(void) ATTR_IRQ_HANDLER;
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void pendsv_handler(void) ATTR_IRQ_HANDLER;
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void svcall_handler(void) ATTR_IRQ_HANDLER;
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void systick_handler(void) ATTR_IRQ_HANDLER;
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#if ARCH_VERSION >= 7
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void memmanage_handler(void) ATTR_IRQ_HANDLER;
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void busfault_handler(void) ATTR_IRQ_HANDLER;
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void usagefault_handler(void) ATTR_IRQ_HANDLER;
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void debugmonitor_handler(void) ATTR_IRQ_HANDLER;
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#endif
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#if ARCH_VERSION >= 8
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void securefault_handler(void) ATTR_IRQ_HANDLER;
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#endif
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/*
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* The weak alias attribute above only works if the alias is defined
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* in the same translation unit. So each platform should declare its
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* IRQ handlers in a file and include it below, so that unused ones
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* can be aliased to UIE.
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*/
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#if CONFIG_CPU == STM32H743
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# include "irqhandlers-stm32h743.c"
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#endif
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