1 files changed, 5 insertions, 0 deletions
diff --git a/spi.h b/spi.h
index c096dce..25ce297 100644
--- a/spi.h
+++ b/spi.h
@@ -80,6 +80,11 @@
 #define JEDEC_RDSR_INSIZE	0x01
 #define JEDEC_RDSR_BIT_WIP	(0x01 << 0)
 
+/* Write Status Enable */
+#define JEDEC_EWSR		0x50
+#define JEDEC_EWSR_OUTSIZE	0x01
+#define JEDEC_EWSR_INSIZE	0x00
+
 /* Write Status Register */
 #define JEDEC_WRSR		0x01
 #define JEDEC_WRSR_OUTSIZE	0x02