altos/stm: Support SPI modes other than 0

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

diff --git a/src/stm/ao_arch_funcs.h b/src/stm/ao_arch_funcs.h
index 9bb598f67fa3d68496c29f1a9ed2f8147957a149..7fe6a732478b442f1b9ce445f7cb253d01cadd88 100644 (file)
--- a/src/stm/ao_arch_funcs.h
+++ b/src/stm/ao_arch_funcs.h
@@ -39,6 +39,9 @@
 
 #define AO_SPI_SPEED_200kHz    AO_SPI_SPEED_125kHz
 
+#define AO_SPI_CPOL_BIT                4
+#define AO_SPI_CPHA_BIT                5
+
 #define AO_SPI_CONFIG_1                0x00
 #define AO_SPI_1_CONFIG_PA5_PA6_PA7    AO_SPI_CONFIG_1
 #define AO_SPI_2_CONFIG_PB13_PB14_PB15 AO_SPI_CONFIG_1
@@ -64,6 +67,15 @@
 
 #define AO_SPI_INDEX(id)       ((id) & AO_SPI_INDEX_MASK)
 #define AO_SPI_CONFIG(id)      ((id) & AO_SPI_CONFIG_MASK)
+#define AO_SPI_PIN_CONFIG(id)  ((id) & (AO_SPI_INDEX_MASK | AO_SPI_CONFIG_MASK))
+#define AO_SPI_CPOL(id)                ((uint32_t) (((id) >> AO_SPI_CPOL_BIT) & 1))
+#define AO_SPI_CPHA(id)                ((uint32_t) (((id) >> AO_SPI_CPHA_BIT) & 1))
+
+#define AO_SPI_MAKE_MODE(pol,pha)      (((pol) << AO_SPI_CPOL_BIT) | ((pha) << AO_SPI_CPHA_BIT))
+#define AO_SPI_MODE_0          AO_SPI_MAKE_MODE(0,0)
+#define AO_SPI_MODE_1          AO_SPI_MAKE_MODE(0,1)
+#define AO_SPI_MODE_2          AO_SPI_MAKE_MODE(1,0)
+#define AO_SPI_MODE_3          AO_SPI_MAKE_MODE(1,1)
 
 uint8_t
 ao_spi_try_get(uint8_t spi_index, uint32_t speed, uint8_t task_id);