PmicAdcBase.hpp

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#pragma once
 
#include <stdint.h>
#include <math.h>
 
class PmicAdcBase
{
public:
    enum class Channel : uint16_t {
        VBUS_VOLTAGE    = (1 << 0),   
        VBUS_CURRENT    = (1 << 1),   
        BAT_VOLTAGE     = (1 << 2),   
        BAT_CURRENT     = (1 << 3),   
        VSYS_VOLTAGE    = (1 << 4),   
        DIE_TEMPERATURE = (1 << 5),   
        BAT_TEMPERATURE = (1 << 6),   
        BAT_PERCENTAGE  = (1 << 7),   
        ACIN_VOLTAGE    = (1 << 8),   
        ACIN_CURRENT    = (1 << 9),   
    };
 
    virtual ~PmicAdcBase() = default;
 
    bool enableChannels(Channel mask)
    {
        return enableChannels(static_cast<uint32_t>(mask));
    }
 
    bool disableChannels(Channel mask)
    {
        return disableChannels(static_cast<uint32_t>(mask));
    }
 
    virtual bool enableChannels(uint32_t mask) = 0;
 
    virtual bool disableChannels(uint32_t mask) = 0;
 
    virtual bool read(Channel ch, float &out) = 0;
 
protected:
    template<typename Func>
    static void forEachChannel(uint32_t mask, Func fn)
    {
        while (mask) {
            uint32_t bit = mask & (-mask);  // isolate lowest set bit
            fn(bit);
            mask &= mask - 1;               // clear lowest set bit
        }
    }
};
 
inline PmicAdcBase::Channel operator|(PmicAdcBase::Channel a, PmicAdcBase::Channel b)
{
    return static_cast<PmicAdcBase::Channel>(
               static_cast<uint16_t>(a) | static_cast<uint16_t>(b));
}
 
inline PmicAdcBase::Channel &operator|=(PmicAdcBase::Channel &a, PmicAdcBase::Channel b)
{
    a = a | b;
    return a;
}