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FRDM-K22F communicating with FXO8700

Question asked by Brian Smith on Apr 20, 2019
Latest reply on Apr 22, 2019 by Kerry Zhou



I'm trying to communicate with FXO8700CQ sensor on my frdm-k22f board and it has been succesful but it wasn't untill i looked into someones code and added I2C_wait function .I'm not really sure why do i have to wait for interrupt flag and clear it even when i'm not using I2C interrupts(it's not working without it). I thought RXAK bit would be better as a "hold" condition to make sure we got response from slave device. Could u please clear that out?




static inline void I2C_wait(I2C_Type *base)
            while((base->S & I2C_S_IICIF_MASK)==0);

            base->S |= I2C_S_IICIF_MASK;