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
Bare metal like. A very basic demonstration of STM32 I2C communications with a DS3231 chip (in the form of a ChronoDot). The program uses I2C to communicate with the DS3231 chip. It sets the DS3231 date and time, and commands … Continue reading
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