mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

Diff: drivers/UARTSerial.cpp

Revision:
186:707f6e361f3e
Parent:
180:96ed750bd169
Child:
187:0387e8f68319
--- a/drivers/UARTSerial.cpp	Thu Apr 19 17:12:19 2018 +0100
+++ b/drivers/UARTSerial.cpp	Fri Jun 22 16:45:37 2018 +0100
@@ -305,12 +305,11 @@
 void UARTSerial::tx_irq(void)
 {
     bool was_full = _txbuf.full();
+    char data;
 
     /* Write to the peripheral if there is something to write
      * and if the peripheral is available to write. */
-    while (!_txbuf.empty() && SerialBase::writeable()) {
-        char data;
-        _txbuf.pop(data);
+    while (SerialBase::writeable() && _txbuf.pop(data)) {
         SerialBase::_base_putc(data);
     }