Don't do check for TRUE or FALSE at this place

[msin87]

stm32/Si4703/main.c

Line 98 in a6c1049

while (!I2C_CheckEvent(I2C_PORT,I2C_EVENT_MASTER_MODE_SELECT)); // Wait for EV5

Please, for compatibility with different stm32 microcontrollers, replace this check with the following:
while (I2C_CheckEvent(I2C_PORT,I2C_EVENT_MASTER_MODE_SELECT)==ERROR);

For stm32f4 ErrorStatus defined as:

typedef enum 
{
  ERROR = 0U, 
  SUCCESS = !ERROR
} ErrorStatus;

Please do this in all your code