#pragma once

namespace mcp23017 {

enum class reg : uint8_t {
    iodira, iodirb,
    ipola, ipolb,
    gpintena, gpintenb,
    defvala, defvalb,
    intcona, intconb,
    iocona, ioconb,
    gppua, gppub,
    intfa, intfb,
    intcapa, intcapb,
    gpioa, gpiob,
    olata, olatb,
};

class gpios
{
public:
    gpios(uint8_t addr);

    int read(reg r, uint8_t *value);
    int write(reg r, uint8_t value);

private:
    uint8_t m_addr;
};

} // namespace mcp23017