Fix TWIlib compilation on avr-gcc 10 (#9273)

1 files changed, 13 insertions, 0 deletions

diff --git a/keyboards/meira/TWIlib.c b/keyboards/meira/TWIlib.c
index 8e0c97438..4091429b4 100755
--- a/keyboards/meira/TWIlib.c
+++ b/keyboards/meira/TWIlib.c
@@ -11,6 +11,19 @@
 #include "util/delay.h"
 #include "print.h"
 
+// Global transmit buffer
+volatile uint8_t *TWITransmitBuffer;
+// Global receive buffer
+volatile uint8_t TWIReceiveBuffer[RXMAXBUFLEN];
+// Buffer indexes
+volatile int TXBuffIndex; // Index of the transmit buffer. Is volatile, can change at any time.
+int RXBuffIndex; // Current index in the receive buffer
+// Buffer lengths
+int TXBuffLen; // The total length of the transmit buffer
+int RXBuffLen; // The total number of bytes to read (should be less than RXMAXBUFFLEN)
+
+TWIInfoStruct TWIInfo;
+
 void TWIInit()
 {
 	TWIInfo.mode = Ready;