diff options
| author | Keith Packard <keithp@keithp.com> | 2013-01-13 20:50:10 -0800 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2013-01-13 20:54:14 -0800 |
| commit | a866431e9a063830b407f749ff97a730831e5e4e (patch) | |
| tree | ffd9a2167354fc4c2495327af7b7415cf2bc5657 | |
| parent | 8d885616e2e522b8aea5e7d5398f16d330a0cffa (diff) | |
altos: Crank fast SPI on STM to 8MHz
With the GPIO pins set to 10MHz now, we can run SPI at the maximum
possible speed (8MHz).
Signed-off-by: Keith Packard <keithp@keithp.com>
| -rw-r--r-- | src/stm/ao_arch_funcs.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/stm/ao_arch_funcs.h b/src/stm/ao_arch_funcs.h index 87bbe73e..d1779307 100644 --- a/src/stm/ao_arch_funcs.h +++ b/src/stm/ao_arch_funcs.h @@ -23,7 +23,7 @@ /* PCLK is set to 16MHz (HCLK 32MHz, APB prescaler 2) */ -#define AO_SPI_SPEED_8MHz STM_SPI_CR1_BR_PCLK_2 /* This doesn't appear to work */ +#define AO_SPI_SPEED_8MHz STM_SPI_CR1_BR_PCLK_2 #define AO_SPI_SPEED_4MHz STM_SPI_CR1_BR_PCLK_4 #define AO_SPI_SPEED_2MHz STM_SPI_CR1_BR_PCLK_8 #define AO_SPI_SPEED_1MHz STM_SPI_CR1_BR_PCLK_16 @@ -32,7 +32,7 @@ #define AO_SPI_SPEED_125kHz STM_SPI_CR1_BR_PCLK_128 #define AO_SPI_SPEED_62500Hz STM_SPI_CR1_BR_PCLK_256 -#define AO_SPI_SPEED_FAST AO_SPI_SPEED_4MHz +#define AO_SPI_SPEED_FAST AO_SPI_SPEED_8MHz /* Companion bus wants something no faster than 200kHz */ |