Daily Archive: October 18, 2014

Library 40- Output clocks from STM32F4 11

Library 40- Output clocks from STM32F4

STM32F4 has capability to output different clocks on specific 2 pins. You are able to output clocks in original frequency (no prescaler) and also with prescaler values 2, 3, 4 and 5. 2 pins are used to output different frequencies. They are not able to output the same clocks. You can output: MCO1 HSI: High Speed Internal oscillator, 16MHz RC HSE: High Speed External oscillator, or External User clock LSE: Low speed, 32768Hz oscillator or ceramic resonator PLLCLK: Output clock...

Library 39- Power consumption modes for STM32F4 21

Library 39- Power consumption modes for STM32F4

For library 39, I made a low power modes library. This allows you to simple put STM32F4 into SLEEP, STOP or STANDBY mode. Point of this modes is simple. You want decrease current on device. If you are working on battery project, this will be very helpful. You can set current down to about 2uA¬†with proper low power mode. I will tell you only the highlights of all 3 power down modes in this post. For detailed informations, check ST’s...