@ -270,7 +270,9 @@
const bool isr_enabled = TEST(M_UCSRxB, M_RXCIEx);
CBI(M_UCSRxB, M_RXCIEx);
#endif
const int v = rx_buffer.head == rx_buffer.tail ? -1 : rx_buffer.buffer[rx_buffer.tail];
#if RX_BUFFER_SIZE > 256
// Reenable RX interrupts if they were enabled
if (isr_enabled) SBI(M_UCSRxB, M_RXCIEx);