I'm tring to write own L3GD20 library. I can read chip ID (but L3G sent to me ffd4 and its partially true). But I cannot read any axis of gyro. Partially gyro always sent to me FF or 00. I'm doing something wrong but I dont know what's wrong. How can...

I have some problem about STM32429zi-disc1 card usart2 periph. I'm sending data via usb to rs232 conv but data is wrong. In my opinion, boud rate is different from my choice. probably, its derive from PLL. How can I fix it ? Pc always receive 0x00 or...