AP_HAL_ChibiOS: return correct value for tx_pending().

4 years ago · db00de837a
1 changed files with 1 additions and 1 deletions
--- a/libraries/AP_HAL_ChibiOS/UARTDriver.cpp
+++ b/libraries/AP_HAL_ChibiOS/UARTDriver.cpp
@ -635,7 +635,7 @@ void UARTDriver::set_blocking_writes(bool blocking)
    _blocking_writes = blocking;
 }
-bool UARTDriver::tx_pending() { return false; }
+bool UARTDriver::tx_pending() { return _writebuf.available() > 0; }
 /* Empty implementations of Stream virtual methods */
 uint32_t UARTDriver::available() {