AP_HAL_Linux: Clear UART buffers when opening a port

2018-06-20 02:00:28 -07:00 · 2018-06-20 02:00:28 -07:00 · 7043738f3b
commit 7043738f3b
parent 153ee6ca8e
1 changed files with 4 additions and 0 deletions
--- a/libraries/AP_HAL_Linux/UARTDriver.cpp
+++ b/libraries/AP_HAL_Linux/UARTDriver.cpp
@ -108,6 +108,10 @@ void UARTDriver::_allocate_buffers(uint16_t rxS, uint16_t txS)
    if (_writebuf.set_size(txS) && _readbuf.set_size(rxS)) {
        _initialised = true;
    }
+    if (hal.console != this) { // don't clear USB buffers (allows early startup messages to escape)
+        _readbuf.clear();
+        _writebuf.clear();
+    }
 }

 void UARTDriver::_deallocate_buffers()