diff options
Diffstat (limited to 'os/hal/platforms/STM32/i2c_lld.h')
| -rw-r--r-- | os/hal/platforms/STM32/i2c_lld.h | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/os/hal/platforms/STM32/i2c_lld.h b/os/hal/platforms/STM32/i2c_lld.h index 6de73f6b0..69d1753bb 100644 --- a/os/hal/platforms/STM32/i2c_lld.h +++ b/os/hal/platforms/STM32/i2c_lld.h @@ -13,11 +13,17 @@ /*===========================================================================*/ /* Driver constants. */ /*===========================================================================*/ -#define I2C_START_TIMEOUT 0xFFFF /*===========================================================================*/ /* Driver pre-compile time settings. */ /*===========================================================================*/ +/** + * @brief Switch between callback based and synchronouse driver. + * @note The default is synchronouse. + */ +#if !defined(I2C_SUPPORTS_CALLBACKS) || defined(__DOXYGEN__) +#define I2C_SUPPORTS_CALLBACKS FALSE +#endif /** * @brief I2C1 driver synchronization choice between GPT and polling. @@ -161,6 +167,7 @@ struct I2CDriver{ * @brief Driver state. */ i2cstate_t id_state; + #if I2C_USE_WAIT /** * @brief Thread waiting for I/O completion. @@ -177,6 +184,7 @@ struct I2CDriver{ Semaphore id_semaphore; #endif #endif /* I2C_USE_MUTUAL_EXCLUSION */ + /** * @brief Current configuration data. */ @@ -198,7 +206,7 @@ struct I2CDriver{ uint16_t slave_addr; /*!< @brief Current slave address. */ uint8_t slave_addr1;/*!< @brief 7-bit address of the slave with r\w bit.*/ - uint8_t slave_addr2;/*!< @brief Used in 10-bit address mode. */ + uint8_t slave_addr2;/*!< @brief Uses in 10-bit address mode. */ EventSource sevent; /*!< @brief Status Change @p EventSource.*/ @@ -209,6 +217,8 @@ struct I2CDriver{ */ I2C_TypeDef *id_i2c; +#if !(STM32_I2C_I2C1_USE_POLLING_WAIT) + /* TODO: capability to switch this GPT fields off */ /** * @brief Timer for waiting STOP condition on the bus. * @details This is workaround for STM32 buggy I2C cell. @@ -219,7 +229,8 @@ struct I2CDriver{ * @brief Config for workaround timer. */ const GPTConfig *timer_cfg; -} ; +#endif /* !(STM32_I2C_I2C1_USE_POLLING_WAIT) */ +}; /*===========================================================================*/ @@ -235,7 +246,7 @@ struct I2CDriver{ * does not block thread, only if slave not response it does. */ #define i2c_lld_wait_bus_free(i2cp) { \ - uint32_t tmo = 0xffff; \ + uint32_t tmo = 0xfffff; \ while((i2cp->id_i2c->SR2 & I2C_SR2_BUSY) && tmo--) \ ; \ } |