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tina sdk中支持的st7701s驱动文件中并没有定义set_bright回调函数，我自己定义了一个对0x51寄存器进行设置以设置亮度值，结果启动后LCD无法点亮。难道所有dsi接口的LCD都不用调节亮度的吗？应用中需要调节亮度怎么办？我觉得问题出在LP模式和HS模式的切换上，跟踪代码发现模式切换函数是空的。哪位大神能够解惑？
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