DMA for ADC implemented, mbed Ticker removed, files restructured

- DMA partly uses ST HAL API (to be improved in further versions) - When using mbed ticker to trigger ADC, the program might stall --> use own timer instead - C++ libraries changed to more simple C-style functions and files (better compatibility with plain C environments)
LibreSolar · Mar 10, 2018 · 4aa51fb · 4aa51fb
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diff --git a/.gitignore b/.gitignore
@@ -7,3 +7,4 @@
 .vscode/c_cpp_properties.json
 .vscode/launch.json
 .vscode/*.db
+.vscode/.browse.c_cpp.db*
diff --git a/README.md b/README.md
@@ -1,6 +1,10 @@
 # MPPT Charger Software
 Software based on ARM mbed library for the LibreSolar 20 A MPPT solar charge controller
 
+## Important remarks
+
+- Do **not** use mbed Ticker class, as it disturbs the timer settings and might cause the charge controller to crash. In addition to that, it contains a lot of overhead and is not very efficient. Timers should be programmed bare metal. Currently, TIM1 is used for PWM generation and TIM15 to trigger ADC readings.
+
 ## State machine in class ChargeController
 
 The charge management is implemented using a state machine with the following states:

diff --git a/lib/AnalogValue/AnalogValue.cpp b/lib/AnalogValue/AnalogValue.cpp
diff --git a/lib/AnalogValue/AnalogValue.h b/lib/AnalogValue/AnalogValue.h
diff --git a/lib/ChargeController/ChargeController.cpp b/lib/ChargeController/ChargeController.cpp