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Diffstat (limited to 'src/stm/ao_arch_funcs.h')
-rw-r--r--src/stm/ao_arch_funcs.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/stm/ao_arch_funcs.h b/src/stm/ao_arch_funcs.h
index 9cfe29e6..18ca20da 100644
--- a/src/stm/ao_arch_funcs.h
+++ b/src/stm/ao_arch_funcs.h
@@ -137,7 +137,7 @@ void
ao_spi_recv(void *block, uint16_t len, uint8_t spi_index);
void
-ao_spi_duplex(void *out, void *in, uint16_t len, uint8_t spi_index);
+ao_spi_duplex(const void *out, void *in, uint16_t len, uint8_t spi_index);
extern uint16_t ao_spi_speed[STM_NUM_SPI];