Mirror/ardupilot
5
0
Fork 0
mirror of https://github.com/ArduPilot/ardupilot synced 2025-01-22 00:28:30 -04:00
Code Issues Packages Projects Releases Wiki Activity

HAL_Linux: reduce the number of times we split up UART reads

Browse Source
This commit is contained in:
Andrew Tridgell 2014-10-09 12:27:32 +11:00
parent 076bb1294e
commit c834589daa
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
libraries/AP_HAL_Linux/UARTDriver.cpp
View File

@ -648,12 +648,12 @@ void LinuxUARTDriver::_timer_tick(void)
uint16_t _head;
n = BUF_SPACE(_readbuf);
if (n > 0) {
if (_readbuf_tail < _head) {
uint16_t n1 = _readbuf_size - _readbuf_tail;
if (n1 >= n) {
// one read will do
assert(_readbuf_tail+n <= _readbuf_size);
_read_fd(&_readbuf[_readbuf_tail], n);
} else {
uint16_t n1 = _readbuf_size - _readbuf_tail;
assert(_readbuf_tail+n1 <= _readbuf_size);
int ret = _read_fd(&_readbuf[_readbuf_tail], n1);
if (ret == n1 && n > n1) {