Then 'ABC' is typed on the host (which is running the minicom terminal emulator program), followed by a carriage return. The compiled program is loaded & executed on the target board.įrom the host side of the serial comm link, the file seq.bin with the following contents is sent: $ od -t x1 seq.bin Syslog(LOG_DEBUG, 'failed to read: %d, %s', rdlen, strerror(errno)) Sfd = open('/dev/ttyS1', O_RDWR | O_NOCTTY) REVISIONĬode that works on my ARM SoC is: #include The preferred method is preserving a copy of the termios stucture (for restoration on program exit) and only modifying the required flag bits (rather than writing the complete structure members). Use the man page to obtain the details on the termios structure members that are modified by cfmakeraw().īeware that cfmakeraw() will setup the serial port in raw mode for a data length of 8 bits and no parity, for a total character frame of 10 bits (assuming one stop bit). The easiest method in C and Linux is to use the function cfmakeraw() which is available in both the GNU libc and uClibc libraries. This would be insufficient code (and poor coding practice per POSIX conventions) to put the serial port into raw or non-canonical mode.
System('stty -F /dev/ttyS0 -icrnl -ixon -ixoff -opost -isig -icanon -echo') // enter into non-canonical (raw) mode How to read a binary data over serial terminal in C program? system('stty erase ^H)
