1 files changed, 4 insertions, 0 deletions

diff --git a/firmware/export/i2c-pp.h b/firmware/export/i2c-pp.h
index 3048acbaba..908db22554 100644
--- a/firmware/export/i2c-pp.h
+++ b/firmware/export/i2c-pp.h
@@ -45,6 +45,10 @@
 
 /* TODO: Fully implement i2c driver */
 
+/* To be used by drivers that need to do multiple i2c operations
+   atomically */
+extern struct spinlock i2c_spin;
+
 void i2c_init(void);
 int i2c_readbyte(unsigned int dev_addr, int addr);
 int pp_i2c_send(unsigned int addr, int data0, int data1);