Tag Archives: stm32f4

STM32F411 RC Calibration Using a DS3231 TCXO 1HZ Signal

STM32 RC oscillator frequency varies from one chip to another due to manufacturing process variations. ST claim each device is factory calibrated for 1% accuracy at 25°C. Thus, after reset this factory calibration value is loaded in the HSICAL[7:0] bits … Continue reading

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STM32F411RE Nucleo USART LS20031 GPS Monitor

The following program is a simple GPS monitor. Connect a GPS TX (output) to the Nucleo GPIO B6 pin and monitor the GPS output on your PC. The Nucleo connects to the PC via a Virtual COM port (Nucleo USART2). … Continue reading

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