rtthread学习笔记系列(8) --RTT系统初始化
8.RTT系统初始化
8.1 rtthread_startup
- 中断禁用
- 板级初始化
8.2 rt_hw_board_init
- I/D cache初始化
- 时钟初始化
- 外设时钟初始化
- 堆初始化
rt_system_heap_init - 组件初始化
rt_components_board_init,初始化板级驱动
8.3 INIT_EXPORT
/*
* Components Initialization will initialize some driver and components as following
* order:
* rti_start --> 0
* BOARD_EXPORT --> 1
* rti_board_end --> 1.end
*
* DEVICE_EXPORT --> 2
* COMPONENT_EXPORT --> 3
* FS_EXPORT --> 4
* ENV_EXPORT --> 5
* APP_EXPORT --> 6
*
* rti_end --> 6.end
*
* These automatically initialization, the driver or component initial function must
* be defined with:
* INIT_BOARD_EXPORT(fn);
* INIT_DEVICE_EXPORT(fn);
* ...
* INIT_APP_EXPORT(fn);
* etc.
*/
- 根据编译后
Image Symbol Table中顺序执行
__rt_init_rti_start 0x900621a4 Data 4 components.o(.rti_fn.0)
__rt_init_rti_board_start 0x900621a8 Data 4 components.o(.rti_fn.0.end)
__rt_init_vtor_config 0x900621ac Data 4 board.o(.rti_fn.1)
__rt_init_mpu_init 0x900621b0 Data 4 drv_mpu.o(.rti_fn.1)
__rt_init_rt_hw_spi_init 0x900621b4 Data 4 drv_spi.o(.rti_fn.1)
__rt_init_SDRAM_Init 0x900621b8 Data 4 drv_sdram.o(.rti_fn.1)
__rt_init_rt_wdt_init 0x900621bc Data 4 drv_wdt.o(.rti_fn.1)
__rt_init_rt_usbd_class_list_init 0x900621c0 Data 4 usbdevice.o(.rti_fn.1)
__rt_init_ulog_init 0x900621c4 Data 4 ulog.o(.rti_fn.1)
__rt_init_rti_board_end 0x900621c8 Data 4 components.o(.rti_fn.1.end)
__rt_init_rt_mmcsd_core_init 0x900621cc Data 4 mmcsd_core.o(.rti_fn.2)
__rt_init_dfs_init 0x900621d0 Data 4 dfs.o(.rti_fn.2)
__rt_init_rt_usbd_msc_class_register 0x900621d4 Data 4 mstorage.o(.rti_fn.2)
__rt_init_ulog_console_backend_init 0x900621d8 Data 4 console_be.o(.rti_fn.2)
__rt_init_ulog_async_init 0x900621dc Data 4 ulog.o(.rti_fn.2)
__rt_init_ulog_console_backend_filter_init 0x900621e0 Data 4 ulog_file_be.o(.rti_fn.3)
__rt_init_adc_init 0x900621e4 Data 4 user_adc.o(.rti_fn.3)
__rt_init_rt_cm_backtrace_init 0x900621e8 Data 4 cmb_port.o(.rti_fn.3)
__rt_init_stm_usbd_register 0x900621ec Data 4 drv_usbd.o(.rti_fn.3)
__rt_init_rt_hw_sdio_init 0x900621f0 Data 4 drv_sdmmc.o(.rti_fn.3)
__rt_init_rt_hw_rtc_init 0x900621f4 Data 4 drv_rtc.o(.rti_fn.3)
__rt_init_set_finsh_irq 0x900621f8 Data 4 board.o(.rti_fn.4)
__rt_init_rtc_update_init 0x900621fc Data 4 board.o(.rti_fn.4)
__rt_init_elm_init 0x90062200 Data 4 dfs_elm.o(.rti_fn.4)
__rt_init_dfs_romfs_init 0x90062204 Data 4 dfs_romfs.o(.rti_fn.4)
__rt_init_dfs_lfs_init 0x90062208 Data 4 dfs_lfs.o(.rti_fn.4)
__rt_init_syswatch_init 0x9006220c Data 4 syswatch.o(.rti_fn.4)
__rt_init_utest_init 0x90062210 Data 4 utest.o(.rti_fn.4)
__rt_init_rt_flash_init 0x90062214 Data 4 spi_flash_init.o(.rti_fn.5)
__rt_init_mfbd_init 0x90062218 Data 4 bsp_key.o(.rti_fn.6)
__rt_init_User_Led_Init 0x9006221c Data 4 user_led.o(.rti_fn.6)
__rt_init_pvd_init 0x90062220 Data 4 board.o(.rti_fn.6)
__rt_init_uart1_init 0x90062224 Data 4 user_uart1.o(.rti_fn.6)
__rt_init_cpu_usage_init 0x90062228 Data 4 cpu_usage.o(.rti_fn.6)
__rt_init_finsh_system_init 0x9006222c Data 4 shell.o(.rti_fn.6)
__rt_init_rti_end 0x90062230 Data 4 components.o(.rti_fn.6.end)
8.4 rt_system_timer_init
原文地址：https://blog.csdn.net/qq_39665253/article/details/145147781
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