Daily Archive: August 3, 2014

AM2301 Temperature and Humidity sensor 18

Library 25- AM2301 (DHT21) sensor for STM32F4

AM2301 or DHT21 is a digital sensor for measure temperature and humidity. It has temperature resolusion up to .1 degree and accuracy to .5 degree celcius. Humidity has .1% resolution and 3% accuracy. This is quite good. Library Features Read temperature from sensor Read humidity from sensor Dependencies CMSIS STM32F4xx STM32F4xx RCC STM32F4xx GPIO TM TM DELAY TM GPIO defines.h

Library 24- Virtual COM Port (VCP) for STM32F4 477

Library 24- Virtual COM Port (VCP) for STM32F4

This library provides Virtual COM port on USB OTG. This means, that you don’t need external USB->UART converter (like FTDI) to communicate with computer. STM32F4xx will be seen to computer like COM port. Library can be used on all STM32F4xx devices. It has also features to support STM32F4- and STM32F429 Discovery boards. To use USB with HAL, check my HAL USB library. Library Features Enables USB VCP Works in USB FS mode Default for STM32F4-Discovery board Works in USB HS...