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-rw-r--r--software/hhd70dongle/spi.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/software/hhd70dongle/spi.h b/software/hhd70dongle/spi.h
index 8b45493..cc1102b 100644
--- a/software/hhd70dongle/spi.h
+++ b/software/hhd70dongle/spi.h
@@ -38,6 +38,7 @@ void spi_cs_enable(void);
void spi_cs_disable(void);
void spi_write_byte(char byte);
char spi_read_byte(void);
+char spi_exchange_byte(char byte);
//~ void spi_write(char* data,unsigned int len);
//~ void spi_read(unsigned int maxlen, char *data, unsigned int *len);