periph Directory Reference

Directories
directory	periph_adc
directory	periph_atimer
directory	periph_blinky
directory	periph_ccan
directory	periph_dac
directory	periph_eeprom
directory	periph_ethernet
directory	periph_i2c
directory	periph_i2s
directory	periph_lcd
directory	periph_memtest
directory	periph_ritimer
directory	periph_rtc
directory	periph_sdmmc
directory	periph_ssp
directory	periph_uart
directory	periph_watchdog