NORDIC nRF51

S130

nRF51 Series - Common Application Libraries

nRF52832 System OFF with Wake on Reset
GPIO Wakeup from System OFF Not Working
nrf51822 wake-up on interrupt and send advertisement

RAM Retention Example
Definitive information on GPREGRET register

PWM/buzzer

https://devzone.nordicsemi.com/question/50589/issue-in-buzzer-beep/

https://devzone.nordicsemi.com/question/17931/pwm-code-for-a-piezo-buzzer/

nRF52

• MDK 515 -- from Atlas
• nRF52 SDK
• Softdevice s132

- hex file: https://www.nordicsemi.com/eng/nordic/Products/nRF52832/S132-SD/48743

• I2C (TWI)

http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk52.v0.9.2%2Ftwi_master_with_twis_slave_example.html

Part

• BLE module: MDBT40
• http://raytaccorp.blogspot.tw/
• freescale: MMA 8451

http://www.compuphase.com/software_termite.htm

Module

https://www.nordicsemi.com/chi/node_176/node_20262


https://devzone.nordicsemi.com/blogs/22/getting-started-with-nrf51-development-on-mac-os-x/
https://devzone.nordicsemi.com/blogs/648/recent-updates-to-rknrfgo/