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947 948的BIST测试怎么做

我需要使用到948内部的patter功能,使屏幕输出彩条,但是做bist测试没成功

运行:./i2cset -f -y 1 0x2c 0x24 0x03 使能948 BIST功能后,lock灯灭了,i2c也无法访问

请问BIST功能该怎么测试,看规格书也没说需要设置947的寄存器

x 出现错误。请重试或与管理员联系。