74HC165与串行数据转换并行，C代码读取并将8位输入存储到r中

亲爱的朋友们，感谢你们提供与专家互动的机会！这里我要执行并行到串行数据转换。因此，我使用的是7HC165，8位并行输入/输出移位寄存器。我需要C代码来读取和存储故障状态为变量（如无符号字符）。我尝试过C代码，但它不工作。基本上我有一个8窗口通知器产品，我想读取八种不同的故障状态。这些故障可以是逻辑0，也可以是逻辑1。现在这八个状态将被收集到一个变量（数据类型：无符号char，值0B900MAM/0B11111111是可能的）硬件逻辑如图（a）所示：D0到D7是八个故障状态，可以是逻辑0或逻辑1。请建议正确的C代码读取和存储故障状态为变量，谢谢！问候，Santosh BhatSr。恩格，班加罗尔



      以下为原文

    Hi dear friends,

Thanks for providing the opportunity to interact with you experts!

Here I want to perform parallel to serial data conversion. Therefore I am using 74HC165, 8-bit parallel-in/serial-out shift register.

I need C code to read & store the fault status into Variable( say unsigned char). I tried below C code but its not working.

Basically I have an 8 Window Annunciator product where I want to read the Eight different Fault status. These faults can be either Logic 0 or Logic 1. Now these Eight status shall be collected into a Variable(datatype: unsigned char, as value 0b00000000/ 0b11111111 is possible)

Hardware logic is illustrated as shown in fig(A):

D0 to D7 are eight fault status which can be either Logic 0 or Logic 1.

C Code to read & store the status is attached as follows:


So kindly suggest the correct C code to read & store the fault status into Variable.

Thanks!

Regards,

Santosh Bhat

Sr. Engg, Bangalore
   Attachment(s)

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