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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-11-25 13:50:26 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-11-25 13:50:26 +0000 |
commit | beaf6630fced304d34f92f630eeb9b181f6e6567 (patch) | |
tree | ea7bcc4cd5cfec6757ac6eba02c390ac4678c1c6 /nuttx/configs/stm3210e-eval/include | |
parent | dd229ba9cc69cb587b587d23c641e0d29afde96a (diff) | |
download | px4-nuttx-beaf6630fced304d34f92f630eeb9b181f6e6567.tar.gz px4-nuttx-beaf6630fced304d34f92f630eeb9b181f6e6567.tar.bz2 px4-nuttx-beaf6630fced304d34f92f630eeb9b181f6e6567.zip |
Fix block read/write return values; SDIO error reporting; slow down clock if interrupt mode
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2278 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/configs/stm3210e-eval/include')
-rwxr-xr-x | nuttx/configs/stm3210e-eval/include/board.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/nuttx/configs/stm3210e-eval/include/board.h b/nuttx/configs/stm3210e-eval/include/board.h index c753d0650..4792ab6af 100755 --- a/nuttx/configs/stm3210e-eval/include/board.h +++ b/nuttx/configs/stm3210e-eval/include/board.h @@ -45,6 +45,7 @@ # include <sys/types.h> #endif #include "stm32_rcc.h" +#include "stm32_sdio.h" #include "stm32_internal.h" /************************************************************************************ @@ -89,6 +90,36 @@ #define STM32_CFGR_USBPRE 0 +/* SDIO dividers. Note that slower clocking is required when DMA is disabled + * in order to avoid RX overrun/TX underrun errors due to delayed responses + * to service FIFOs in interrupt driven mode. These values have not been + * tuned!!! + * + * HCLK=72MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(178+2)=400 KHz + */ + +#define SDIO_INIT_CLKDIV (178 << SDIO_CLKCR_CLKDIV_SHIFT) + +/* DMA ON: HCLK=72 MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(2+2)=18 MHz + * DMA OFF: HCLK=72 MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(3+2)=14.4 MHz + */ + +#ifdef CONFIG_SDIO_DMA +# define SDIO_MMCXFR_CLKDIV (2 << SDIO_CLKCR_CLKDIV_SHIFT) +#else +# define SDIO_MMCXFR_CLKDIV (3 << SDIO_CLKCR_CLKDIV_SHIFT) +#endif + +/* DMA ON: HCLK=72 MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(1+2)=24 MHz + * DMA OFF: HCLK=72 MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(3+2)=14.4 MHz + */ + +#ifdef CONFIG_SDIO_DMA +# define SDIO_SDXFR_CLKDIV (1 << SDIO_CLKCR_CLKDIV_SHIFT) +#else +# define SDIO_SDXFR_CLKDIV (3 << SDIO_CLKCR_CLKDIV_SHIFT) +#endif + /* LED definitions ******************************************************************/ /* The STM3210E-EVAL board has 4 LEDs that we will encode as: */ |