Dev xxxx xxx fix #1403

[dbestm]

I2C correction (F1, F2, F4, L1):

// Wait the STOP condition has been previously correctly sent
// This timeout can be avoid in some specific cases by simply clearing the STOP bit
timeout = FLAG_TIMEOUT;
while ((i2c->CR1 & I2C_CR1_STOP) == I2C_CR1_STOP) {
    if ((timeout--) == 0) {
        return 1;
    }
}

// Generate the START condition
i2c->CR1 |= I2C_CR1_START;

I2C correction (F0, F3, F7, L0, L4):

// Wait the STOP condition has been previously correctly sent
timeout = FLAG_TIMEOUT;
while ((i2c->CR2 & I2C_CR2_STOP) == I2C_CR2_STOP){
    if ((timeout--) == 0) {
        return 1;
    }
}

// Generate the START condition
i2c->CR2 |= I2C_CR2_START;

RTC correction (all but F1):

// Check if RTC is already initialized
if ((RTC->ISR & RTC_ISR_INITS) ==  RTC_ISR_INITS) return;

clock time out :
high speed @ 200ms in hal conf
low speed @ 100ms in hal rcc
nucleo 32 on HSI by default in system config

[0xc0170]

why are all these timeouts >99 ms?

[0xc0170]

I still would like to find out those numbers, why there are 100/200 ms