hi 各位
我们有个产品用了dlpc2607和pad10000,dlpc2607 i2c通信正常,我想得到pad1000 采样到的温度值,请问下要怎么实现呢?
我对那个compound i2c command不理解,能具体解释下吗?
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用PAD1000来检测温度,首先硬件上需要一个热敏电阻来采样,连接方式参考附图。然后通过DLPC2607可以直接读到PAD1000输出的温度。具体的寄存器操作如下:
Write Cmd:CMD_CPU_handshake_flag_wr, addr:36, subAddr:3a 00 00 00 01 Write
Write Cmd:CMD_CPU_register_read1_wr, addr:36, subAddr:38 00 00 00 c5 Write
Write Cmd:cmd_write_rdaddr, addr:36, subAddr:15 39 Write
Read Cmd:CMD_CPU_Temp_value_rd, addr:37, Read
hi MengAo
非常感谢您的回答,在我尝试了你提示的时序,后发现我得到的数据Read Cmd:CMD_CPU_Temp_value_rd, addr:37, Read,一直是“0”,我试了下其他寄存器,
Write Cmd:CMD_CPU_handshake_flag_wr, addr:36, subAddr:3a 00 00 00 01 Write
Write Cmd:CMD_CPU_register_read1_wr, addr:36, subAddr:38 00 00 00 c5(02-EC) Write
Write Cmd:cmd_write_rdaddr, addr:36, subAddr:15 39 Write
Read Cmd:CMD_CPU_Temp_value_rd, addr:37, Read
得到的数据也都是“0”,而且Handshake_flag 读回的也一直是“1”,Handshake_flag 是不是会被清除,如果compound i2c command 正常?
是否有其他的关联呢?