diff options
Diffstat (limited to 'os/hal/platforms/STM32/i2c_lld.h')
| -rw-r--r-- | os/hal/platforms/STM32/i2c_lld.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/os/hal/platforms/STM32/i2c_lld.h b/os/hal/platforms/STM32/i2c_lld.h index f770be615..75c877a3a 100644 --- a/os/hal/platforms/STM32/i2c_lld.h +++ b/os/hal/platforms/STM32/i2c_lld.h @@ -163,6 +163,12 @@ #define STM32_I2C_I2C2_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 4) #endif /* !STM32_ADVANCED_DMA*/ + +/** + * @brief Peripheral clock frequency. + */ +#define I2C_CLK_FREQ ((STM32_PCLK1) / 1000000) + /** @} */ /*===========================================================================*/ @@ -234,6 +240,34 @@ #define STM32_DMA_REQUIRED #endif +/* Check clock range. */ +#if defined(STM32F4XX) + #if (!(I2C_CLK_FREQ >= 2) && (I2C_CLK_FREQ <= 42)) + #error "Peripheral clock freq. out of range." + #endif +#elif defined(STM32L1XX_MD) + #if (!(I2C_CLK_FREQ >= 2) && (I2C_CLK_FREQ <= 32)) + #error "Peripheral clock freq. out of range." + #endif +#elif defined(STM32F2XX) + #if (!(I2C_CLK_FREQ >= 2) && (I2C_CLK_FREQ <= 30)) + #error "Peripheral clock freq. out of range." + #endif +#elif defined(STM32F10X_LD_VL) || defined(STM32F10X_MD_VL) || \ + defined(STM32F10X_HD_VL) + #if (!(I2C_CLK_FREQ >= 2) && (I2C_CLK_FREQ <= 24)) + #error "Peripheral clock freq. out of range." + #endif +#elif defined(STM32F10X_LD) || defined(STM32F10X_MD) || \ + defined(STM32F10X_HD) || defined(STM32F10X_XL) || \ + defined(STM32F10X_CL) + #if (!(I2C_CLK_FREQ >= 2) && (I2C_CLK_FREQ <= 36)) + #error "Peripheral clock freq. out of range." + #endif +#else +#error "unspecified, unsupported or invalid STM32 platform" +#endif + /*===========================================================================*/ /* Driver data structures and types. */ /*===========================================================================*/ |