STM32F7_I2C_CR1_RXDMAEN
STM32F7_I2C_CR1_RXDMAEN | STM32F7_I2C_CR1_TXDMAEN);
cr1 |= STM32F7_I2C_CR1_RXDMAEN;
STM32F7_I2C_CR1_RXDMAEN | STM32F7_I2C_CR1_TXDMAEN);
cr1 |= STM32F7_I2C_CR1_RXDMAEN;
u32 mask = STM32F7_I2C_CR1_RXDMAEN | STM32F7_I2C_CR1_TXDMAEN;
STM32F7_I2C_CR1_RXDMAEN | STM32F7_I2C_CR1_TXDMAEN);
cr1 |= STM32F7_I2C_CR1_RXDMAEN;