diff options
| author | Keith Packard <keithp@keithp.com> | 2018-10-15 11:15:31 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2018-10-19 08:38:32 -0700 |
| commit | 33bb97b9637bdabe4360269889e20fcc50ef9886 (patch) | |
| tree | d515912e18c5072a5dbdf2e24446e78509b18d9a /src/stm/ao_arch_funcs.h | |
| parent | dbc52686c6d9808275c35e0c9c987cbbd9f7859d (diff) | |
altos/stm: Support SPI modes other than 0
ADXL375 requires SPI mode 3.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/stm/ao_arch_funcs.h')
| -rw-r--r-- | src/stm/ao_arch_funcs.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/stm/ao_arch_funcs.h b/src/stm/ao_arch_funcs.h index 9bb598f6..7fe6a732 100644 --- 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); |