LICENSE

 BSD 3-Clause License
 
-Copyright (c) 2019, smartport / public / ahoi
+Copyright (c) 2022, Hamburg University of Technology (TUHH).
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without

src/hal/mcu/mcu_adda.c

@@ -272,8 +272,9 @@ adda_activateSampling(void)
     spi_transmit((void *)&SPI_TX_ShdnSample);
 
     // wait remaining time
-    if (adda_getTimerTicks() - start < TXRX_TURNAROUND_TICKS) {
-      adda_wait(TXRX_TURNAROUND_TICKS - (adda_getTimerTicks() - start));
+    sample_time_t  dt = adda_getTimerTicks() - start;
+    if (dt < TXRX_TURNAROUND_TICKS) {
+      adda_wait(TXRX_TURNAROUND_TICKS - dt);
     }
   } else {
     txamp_disconnectOutput();
@@ -322,8 +323,9 @@ adda_activateTransmission()
   txEnabled = true;
 
   // wait remaining time
-  if (adda_getTimerTicks() - start < RXTX_TURNAROUND_TICKS) {
-    adda_wait(RXTX_TURNAROUND_TICKS - (adda_getTimerTicks() - start));
+  sample_time_t  dt = adda_getTimerTicks() - start;
+  if (dt < RXTX_TURNAROUND_TICKS) {
+    adda_wait(RXTX_TURNAROUND_TICKS - dt);
   }
 
   // connect hydrophone to TX circuitry (and disconnect RX) after