Linux串行端口-wrtie（）字节通过串行端口到达目标设备

Question

unsigned char cmd[] = {'A', 'T', '+', "0x07", "0x08", 'D', 'F', "0xA6"};

To write this command to my target device, I expect to write byte

41 54 2b 07 08 44 46 A6 

accordingly.

However, the actual bytes written to device are

41 54 2b b8 bb 44 46 be

and it's obvious wrong at

0x07 0x08 0xA6

How to write bytes are I expect to have in the above example ?

----- write function -------

void WriteToDevice(){
unsigned char cmd[]={'A', 'T', '+', "0x07", "0x08", 'D', 'F', "0xA6"};
int n = write(fd,&cmd,8);

for(p=0;p<8;p++){
    printf("bytes written: %02x \n", cmd[p]);
}

if(n<0){
    printf("write error \n");
}
else{
    printf("%d bytes written \n", n);
}

};

compiler warning

warning: (near initialization for ‘cmd[3]’) [enabled by default]
warning: initialization makes integer from pointer without a cast [enabled by default]

Answer 1

代替"0x07", "0x08"等，请使用'\\x07', '\\x08 '等。