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eeworld.com.cn
10 天
STM32系统时钟和延迟函数初始化
这些设备有以下2种二级时钟源: (1)40kHz低速内部RC,可以用于驱动独立看门狗和通过程序选择驱动RTC。RTC用于从停机/待机 ...
eeworld.com.cn
26 天
u-boot之start_armboot函数分析
gd是全局引用的变量,它的定义在Global_data.h (includeasm-arm)中,它利用的是CPU的寄存器r8。只有在文件中引用DECLARE_GLOBAL_DATA_PTR ,就可以使用gd这个变量 ...
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