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examples/termios: Adds option to disable HW flow control

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This commit is contained in:
Sara Souza 2021-05-29 16:27:02 -03:00 committed by Xiang Xiao
parent 7a7ef0db59
commit b203d14c7b
2 changed files with 20 additions and 2 deletions
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6
examples/termios/Kconfig
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@ -21,4 +21,10 @@ config EXAMPLES_TERMIOS_STACKSIZE
int "Termios stack size"
default DEFAULT_TASK_STACKSIZE
config EXAMPLES_TERMIOS_DIS_HW_FC
bool "Disable HW flow control"
default n
---help---
Disable HW flow control using TERMIOS.
endif

16
examples/termios/termios_main.c
View File

@ -87,10 +87,22 @@ int main(int argc, FAR char *argv[])
tio.c_cflag &= ~CSIZE; /* Clean the bits */
tio.c_cflag |= CS7; /* 7 bits */
#ifdef CONFIG_EXAMPLES_TERMIOS_DIS_HW_FC
/* Disable the HW flow control */
tio.c_cflag &= ~CCTS_OFLOW; /* Output flow control */
tio.c_cflag &= ~CRTS_IFLOW; /* Input flow control */
printf("Disabled HW Flow Control\n");
#endif
printf("Please, reopen the terminal with the new attributes,"
" otherwise you will have garbage.\n"
" otherwise you will have garbage or a stuck terminal.\n"
"If you disabled HW flow control, try disconnecting RTS and CTS.\n"
"You may try: picocom /dev/ttyUSB0 --baud 57600"
" --parity o --databits 7 --stopbits 2\n\n");
fflush(stdout); /* Clean stdout buffer */
/* Wait to empty the hardware buffer, otherwise the above message
@ -98,7 +110,7 @@ int main(int argc, FAR char *argv[])
* before the hardware buffer gets empty. A small delay is enough.
*/
usleep(100);
sleep(1);
/* Change the attributes now. */