b11cb41ae7
解决 tms320f28379d bsp 启动的问题。主要改动如下。 修正context.s中汇编代码错误。在旧版的代码中，操作数为32位而汇编命令却使用了针对16位数据的命令MOV，导致程序在某些情况无法正常启动线程。 由于C28x的平台下，SP只支持16bit寻址，所以用于线程空间存放的heap以及ebss段都需要放在低16位的空间，针对这个问题修改了CMD文件。此外还增加基于CMD文件基于RAM的支持，方便调试。 新增rtdef.h中RT_SECTION，RT_USED，ALIGN和RT_WEAK的定义。旧版bsp中这些定义为空，导致INIT_EXPORT注册的函数失效。 修改程序启动代码，在程序入口直接调用原生启动代码 以上改动在LAUNCHXL-F28379D 通过了测试。
122 lines
3.0 KiB
C
122 lines
3.0 KiB
C
/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2009-09-22 Bernard add board.h to this bsp
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* 2018-09-02 xuzhuoyi modify for TMS320F28379D version
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* 2022-06-21 guyunjie fix bugs in trap_rtosint and enable interrupt nesting
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* 2022-08-21 yuqi adding onboard devices initialization code
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*/
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#include <rtthread.h>
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#include "board.h"
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#include "drv_sci.h"
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#include "F28x_Project.h"
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#ifndef RT_USING_SMP
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extern volatile rt_uint8_t rt_interrupt_nest;
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#endif
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extern rt_uint32_t rt_thread_switch_interrupt_flag;
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extern interrupt void RTOSINT_Handler();
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void trap_rtosint()
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{
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if(rt_thread_switch_interrupt_flag)
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{
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/* only do pendsv at the end of the last level of interrupt nesting,
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* so that threads do not preempt any isrs. */
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if(rt_interrupt_nest == 1)
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{
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/* rt_interrupt_leave_hook is called before rt_interrupt_nest --
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* in rt_interrupt_leave. We need to do this manually here to indicate
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* that all isrs have been cleared before we switch to thread. */
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rt_interrupt_nest --;
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asm(" trap #16");
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/* increment rt_interrupt_nest to compensate for the previous decrement. */
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rt_interrupt_nest ++;
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}
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}
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}
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/**
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* This is the timer interrupt service routine.
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*
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*/
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interrupt void cpu_timer2_isr(void)
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{
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CpuTimer2Regs.TCR.all = 0xC000;
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ALLOW_ISR_PREEMPT();
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/* enter interrupt */
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rt_interrupt_enter();
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rt_tick_increase();
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/* leave interrupt */
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rt_interrupt_leave();
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}
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/**
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* This function will initial TMS320F28379D board.
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*/
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void rt_hw_board_init()
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{
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/* Configure the system clock @ 84 Mhz */
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InitSysCtrl();
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DINT;
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InitPieCtrl();
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IER = 0x0000;
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IFR = 0x0000;
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InitPieVectTable();
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#ifdef _FLASH
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memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (Uint32)&RamfuncsLoadSize);
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InitFlash();
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#endif
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EALLOW; // This is needed to write to EALLOW protected registers
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PieVectTable.TIMER2_INT = &cpu_timer2_isr;
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PieVectTable.RTOS_INT = &RTOSINT_Handler;
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EDIS;
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InitCpuTimers();
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ConfigCpuTimer(&CpuTimer2, 200, 1000000 / RT_TICK_PER_SECOND);
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CpuTimer2Regs.TCR.all = 0x4000;
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IER |= M_INT14;
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#ifdef RT_USING_HEAP
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rt_system_heap_init(&__ebss_end, &(__heap_end));
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#endif
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#ifdef RT_USING_SERIAL
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rt_hw_sci_init();
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#endif
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#ifdef RT_USING_COMPONENTS_INIT
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rt_components_board_init();
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#endif
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#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
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rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
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#endif
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rt_interrupt_leave_sethook((void (*)(void))trap_rtosint);
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}
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int _args_main()
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{
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/* _args_main is the entry point called by _c_int00. We define it
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* here to override the one defined by the compiler in args_main.c */
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extern int rtthread_startup();
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/* startup RT-Thread RTOS */
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rtthread_startup();
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/* never reach here*/
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return 0;
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}
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