MCU C language serial port transmission structure

Serial port transmission structure is to convert the structure into an array and then transmit the char in the array.

That is, struct - - - - - - ->> char [ ] ;

Then char[ ] - - - -- - - - -->> struct .

Here is a simple example code:

#include

#include

/*--------------------------start file---------------------------------*/

typedef struct

{

int id;

char name[10];

int score;

}student;

int struct_array(char* des, student *src)

{

int num;

char *temp = (char *) src ;

for(num=0;num *(des+num)= temp[num];

return num;

}

void array_struct(student * des ,char * src)

{

char* temp = (char *) des;

int num;

for(num=0;num < sizeof(student);num++)

*(temp++)= src[num];

}

void show_student(student * name)

{

printf("id is : %dn",name->id);

printf("name is : %sn",name->name);

printf("score is : %d n",name->score);

}

void show_array(char *str, int len)

{

printf("len is : %d n" ,len);

while(len--)

{

putchar('|');

putchar(*str++);

}

printf("|n");

}

int main()

{

char name[10] = "laomao";

student laomao = { 123 , {"laomao"} , 99 } ; 

char save[100];

int len ​​;

student * answer;

len = struct_array(save, &laomao);

show_array(save, len);

array_struct(answer, save);

show_student(answer);

show_student(&laomao);

return 0;

}

/*---------------------------end file----------------------------------*/

operation result:

-------------------------------------------------------

len is : 20

|{| | | |l|a|o|m|a|o| | | | | | |c| | | |

id is : 123

name is : laomao

score is : 99

id is : 123

name is : laomao

score is : 99

---------------------------------------------------------------