UART - Raspberry Pi Hardware Reference - page 99

Table 9-7. Input (c_iflag) Flags

Flag Set Description Flag Description

BRKINT T Break causes SIGINT else 0x00 ISTRIP Strip off eighth bit

F Break reads as 0x00 INLCR Translate NL to CR

IXANY Any character will resume IUTF8 Input is UTF8 charset

IXOFF Enable input XON/XOFF ICRNL Translate CR to NL

IXON Enable output XON/XOFF IGNBRK Ignore break

IGNPAR Ignore framing and parity errors IGNCR Ignore CR

IUCLC Translate uppercase to lowercase

INPCK Enable parity checking

PARMRK T Prefix framing/parity error with \377

F Don't prefix with \377 (byte reads 0)

9-8 lists the macros for member c_oflag .

• Table

Table 9-8. Output (c_oflag) Flags

Flag Description Flag Description

CR0 CR delay mask 0 OFDEL Fill character is DEL else NUL

CR1 CR delay mask 1 OFILL Use fill characters instead of

timed delay

CR2 CR delay mask 2 OLCUC Translate lowercase to uppercase

CR3 CR delay mask 3 ONLCR Translate NL to CR-NL

CRDLY CR delay: apply CR0-CR3 ONLRET Don't output CR

FF0 FF delay mask 0 ONOCR Don't output CR at column 0

FF1 FF delay mask 1 OPOST Enable output processing

FFDLY FF delay: apply FF0-FF1 TAB0 Tab delay mask 0

NL0 NL delay mask 0 TAB1 Tab delay mask 1

NL1 NL delay mask 1 TAB2 Tab delay mask 1

NLDLY NL delay: apply NL0-NL1 TAB3 Tab delay mask 2

OCRNL Translate CR to NL TABDLY Tab delay: apply TAB0-TAB3