attiny, stm32l0: Note that these chips don't support spi duplex

[fw/altos] / src / stm32l0 / ao_arch_funcs.h

diff --git a/src/stm32l0/ao_arch_funcs.h b/src/stm32l0/ao_arch_funcs.h
index f03d96957802674ffc22d54b009be87805c15119..385fe0e32b192d6c815ec0fd32bdb96f8d69abe0 100644 (file)
--- a/src/stm32l0/ao_arch_funcs.h
+++ b/src/stm32l0/ao_arch_funcs.h
@@ -139,8 +139,7 @@ ao_spi_recv_byte(uint8_t spi_index)
 void
 ao_spi_recv(void *block, uint16_t len, uint8_t spi_index);
 
-void
-ao_spi_duplex(const void *out, void *in, uint16_t len, uint8_t spi_index);
+#define AO_SPI_DUPLEX  0
 
 void
 ao_spi_init(void);