PX4/Firmware — pull request #839 by eneadev (2014-04-19 11:08:38+00:00)
Title: Update drv_hrt.c

TIM3 was not working properly with a custom application and I got it work changing TIM3 HRT_TIMER_POWER_BIT from RCC_APB2ENR_TIM3EN to RCC_APB1ENR_TIM3EN because on datasheet TIM3 is on APB1, I think that you should check also the others