IO: Make I2C errors more verbose

gohai · gohai · commit 356e7003269b · 2018-07-10T10:16:46.000-07:00
The error code returned from C seems to have changed from -EIO to -EREMOTEIO during some recent kernel version.
diff --git a/java/libraries/io/src/processing/io/I2C.java b/java/libraries/io/src/processing/io/I2C.java
@@ -125,7 +125,7 @@ public void endTransmission() {
     transmitting = false;
     out = null;
     if (ret < 0) {
-      if (ret == -5) {    // EIO
+      if (ret == -5 | ret == -121) {    // EIO | EREMOTEIO
         System.err.println("The device did not respond. Check the cabling and whether you are using the correct address.");
       }
       throw new RuntimeException(NativeInterface.getError(ret));
@@ -185,7 +185,7 @@ public byte[] read(int len) {
     transmitting = false;
     out = null;
     if (ret < 0) {
-      if (ret == -5) {    // EIO
+      if (ret == -5 | ret == -121) {    // EIO | EREMOTEIO
         System.err.println("The device did not respond. Check the cabling and whether you are using the correct address.");
       }
       throw new RuntimeException(NativeInterface.getError(ret));
