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请问下941 与 948如何通过I2C通信,
1. Local I 2 C
2. Communicating with remote DES
3. Communicating with Remote slave attached to DES
4. Addressing Multiple DES with duplicate device ID
5. Addressing Multiple slaves with duplicate device ID
看文档中是这样说的
soc用通过941 读写 948的 0x55 具体是如何操作呢?
您好,主机接在941这边是吗?您的意思是如何读取到948的从机地址0x55是吗?
如果主机接在941这边,当FPD link成功建立起来之后, 948的地址会自动加载到941的寄存器0x6 DES_DEV_ID中的,您可以读取941的寄存器0x6,判断是否能正确读取到DES 948的地址。
你好,我读取941 寄存器0x6 DES_DEV_ID的值为0x58, 实际查看948 硬件配置地址也是为0x58
然后往941 的0x64写 0x55 , 0x65写0x37,能输出800x480的分辨率
嗯,0x6能正确读取到948的地址,说明FPD link已经成功建立。
948的地址映射到941中,那么通过配置941的寄存器进行主机和948的通信。