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

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

diff --git a/src/attiny/ao_arch_funcs.h b/src/attiny/ao_arch_funcs.h
index 1f422a37645bd92d7d7c2764a29c5f3b26a7efde..e3374ac59ee4b501665675f0c025d9dcb10a758e 100644 (file)
--- a/src/attiny/ao_arch_funcs.h
+++ b/src/attiny/ao_arch_funcs.h
@@ -65,6 +65,8 @@ ao_spi_recv_bus(void *block, uint16_t len);
 #define ao_spi_send(block, len, bus) ao_spi_send_bus(block, len)
 #define ao_spi_recv(block, len, bus) ao_spi_recv_bus(block, len)
 
+#define AO_SPI_DUPLEX  0
+
 void
 ao_spi_init(void);