Reduce power consumption of LED matrix on power off mode.

lancaster-university · Aug 10, 2023 · 4ff490b · 4ff490b
1 parent 4f2aedc
commit 4ff490b
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/source/NRF52LedMatrix.cpp b/source/NRF52LedMatrix.cpp
@@ -189,11 +189,14 @@ void NRF52LEDMatrix::disable()
 
     // Disable the timer that drivers the display
     timer.disable();
-    timer.disableIRQ();
 
     // Disable GPIOTE control of the display pins
-    for (int column = 0; column < matrixMap.columns; column++)
-        NRF_GPIOTE->CONFIG[gpiote[column]] = 0;
+    // FIXME: When GPIOTE is disabled here "system off" consumes almost 1mA @ 3V
+    // It's unclear how changing this peripheral causes the additional power consumption
+    // https://github.com/lancaster-university/codal-microbit-v2/issues/30
+    // for (int column = 0; column < matrixMap.columns; column++)
+    //    NRF_GPIOTE->CONFIG[gpiote[column]] = 0;
+
 
     // Put all pins into high impedance mode.
     for (int column = 0; column < matrixMap.columns; column++)