From: Keith Packard Date: Mon, 14 Jan 2013 04:50:10 +0000 (-0800) Subject: altos: Crank fast SPI on STM to 8MHz X-Git-Tag: altosdroid_v1.2-1~105^2~4 X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=a866431e9a063830b407f749ff97a730831e5e4e 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 --- 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 */