Raspberries/mraa
Private
Public Access
2
0
Fork 0
Code Activity

firmata: Added option to set uart non blocking state

Browse Source 
Signed-off-by: Shiran Ben-Melech <shiran.ben-melech@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Shiran Ben-Melech
2016-03-03 16:12:48 +02:00
committed by Brendan Le Foll
parent 04f7cbff5d
commit cae63bbd52
3 changed files with 44 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
src/uart/uart.c
View File

@@ -451,6 +451,28 @@ mraa_uart_set_timeout(mraa_uart_context dev, int read, int write, int interchar)
return MRAA_SUCCESS;
}
mraa_result_t
mraa_uart_set_non_blocking(mraa_uart_context dev, mraa_boolean_t nonblock)
{
// get current flags
int flags = fcntl(dev->fd, F_GETFL);
// update flags with new blocking state according to nonblock bool
if (nonblock) {
flags |= O_NONBLOCK;
} else {
flags &= ~O_NONBLOCK;
}
// set new flags
if (fcntl(dev->fd, F_SETFL, flags) < 0) {
syslog(LOG_ERR, "failed changing fd blocking state");
return MRAA_ERROR_UNSPECIFIED;
}
return MRAA_SUCCESS;
}
const char*
mraa_uart_get_dev_path(mraa_uart_context dev)
{