Embedded systems question Electrical engineering A Bluetooth-enabled device tran

Question

Embedded systems question Electrical engineering A Bluetooth-enabled device transmits two separate bytes of data once per second to a Bluetooth-enabled microcontroller. The two bytes contain the 12 bits (a_0 to a_11) of a variable, a bit 's' and 3 unused bits as shown in Figure 2. When the bit 's' is 0, it indicates that the transmitted data is wrong. Assuming that a 'C' code has two variables B1 and B2 declared as unsigned char and are used to hold the two bytes, byte 1 and byte 2, received by the microcontroller respectively. Add lines to the 'C' code to continuously: - check if the received data is correct (wait if it is not correct); and - if the received data is correct, assign the 12 bits to a variable using one statement only. The variable needs to be declared first using the appropriate data type.

Explanation / Answer

c code cannot declare a bit as a variable

typedef union

{

struct

{

unsigned int b0 : 1;

unsigned int b1 : 1;

unsigned int b2 : 1;

unsigned int b3 : 1;

unsigned int b4 : 1;

unsigned int b5 : 1;

unsigned int b6 : 1;

unsigned int b7 : 1;

unsigned int b8 : 1;

unsigned int b9 : 1;

unsigned int b10 : 1;

unsigned int b11 : 1;

};

unsigned char byte;

} T_Bitvar;

T_Bitvar my_bitvar;

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