libopencm3/libopencm3 — pull request #230 by cyhuang (2014-01-03 03:48:02+00:00)
Title: [STM32L1:ADC] module refinement

* This request is based on @bgamari's STM32L1 ADC interface pull request #165.
* Detailed modifications of this request are described in bgamari#2.
* Both single shot and multiple (scan mode with DMA) regular ADC conversion are successfully tested with real hardware [STM32L152C-DISCOVERY](http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/LN1199/PF258515) evaluation kit. And the related example codes are in [adc.c](https://github.com/cyhuang/libopencm3/blob/master/lib/stm32/l1/adc.c) file's description comments.