在Linux中使用c ++进行串行通信

Question

i can send 1 byte char type data serially. now i am stuck with sending float type data . here is my code for sending data serially .

fd = open("/dev/ttyO1", O_RDWR | O_NOCTTY);
char byte_out[] = {0x47};
write(fd, byte_out, strlen(byte_out)+1);

how can i write(or send) float type data serially . Please help me . thanks in advance .

Answer 1

Nothing different.. and you need to put the right size of the float type ..

fd = open("/dev/ttyO1", O_RDWR | O_NOCTTY);
float float_out[] = {1.2342};
write(fd, (void *) float_out, sizeof(float));