ads7952_config.hpp

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#pragma once
#include <cstdint>
 
#include "ads7952_types.hpp"
 
namespace ADS7952_CFG {
 
// ---- Operating mode default ------------------------------------------------
#ifdef CONFIG_ADS7952_MODE_AUTO1
inline constexpr ads7952::Mode DEFAULT_MODE = ads7952::Mode::Auto1;
#elif defined(CONFIG_ADS7952_MODE_AUTO2)
inline constexpr ads7952::Mode DEFAULT_MODE = ads7952::Mode::Auto2;
#else
inline constexpr ads7952::Mode DEFAULT_MODE = ads7952::Mode::Manual;
#endif
 
// ---- Input range default ---------------------------------------------------
#ifdef CONFIG_ADS7952_RANGE_2VREF
inline constexpr ads7952::Range DEFAULT_RANGE = ads7952::Range::TwoVref;
#else
inline constexpr ads7952::Range DEFAULT_RANGE = ads7952::Range::Vref;
#endif
 
// ---- Device constants ------------------------------------------------------
inline constexpr uint8_t  NUM_CHANNELS    = 12;
inline constexpr uint8_t  RESOLUTION_BITS = 12;
inline constexpr uint16_t MAX_COUNT       = (1U << RESOLUTION_BITS) - 1;
 
// ---- Voltage reference defaults --------------------------------------------
#ifdef CONFIG_ADS7952_VREF_MV
inline constexpr float DEFAULT_VREF = CONFIG_ADS7952_VREF_MV / 1000.0f;
#else
inline constexpr float DEFAULT_VREF = 2.5f;   // REF5025 typical
#endif
 
#ifdef CONFIG_ADS7952_VA_MV
inline constexpr float DEFAULT_VA = CONFIG_ADS7952_VA_MV / 1000.0f;
#else
inline constexpr float DEFAULT_VA = 5.0f;     // Typical VA supply
#endif
 
// ---- Reference and supply limits: SLAS605C 7.3 Recommended Operating
//      Conditions (V(REF) 2.0 V to 3.0 V, V(+VA) 2.7 V to 5.25 V) ----------
inline constexpr float MIN_VREF = 2.0f; // Minimum V(REF), recommended operating conditions
inline constexpr float MAX_VREF = 3.0f; // Maximum V(REF), recommended operating conditions
inline constexpr float MIN_VA = 2.7f;   // Minimum V(+VA), recommended operating conditions
inline constexpr float MAX_VA = 5.25f;  // Maximum V(+VA), recommended operating conditions
 
// ---- Auto-1 default channel mask (all 12 channels) ------------------------
#ifdef CONFIG_ADS7952_AUTO1_CHANNEL_MASK
inline constexpr uint16_t DEFAULT_AUTO1_MASK = CONFIG_ADS7952_AUTO1_CHANNEL_MASK;
#else
inline constexpr uint16_t DEFAULT_AUTO1_MASK = 0x0FFF;
#endif
 
// ---- Auto-2 default last channel -------------------------------------------
#ifdef CONFIG_ADS7952_AUTO2_LAST_CH
inline constexpr uint8_t DEFAULT_AUTO2_LAST_CH = CONFIG_ADS7952_AUTO2_LAST_CH;
#else
inline constexpr uint8_t DEFAULT_AUTO2_LAST_CH = 11;
#endif
 
// ---- Safety margin frames for ReadAllChannels auto-read loop ---------------
#ifdef CONFIG_ADS7952_READ_ALL_MAX_EXTRA
inline constexpr uint8_t READ_ALL_MAX_EXTRA_FRAMES = CONFIG_ADS7952_READ_ALL_MAX_EXTRA;
#else
inline constexpr uint8_t READ_ALL_MAX_EXTRA_FRAMES = 4;
#endif
 
// ---- Manual-mode read: CONTINUE frames allowed before the requested channel
//      address appears in DO15:12. SLAS605C Figure 51: select in frame N,
//      data in frame N+2, so the minimum is 2; one spare for a mode change
//      that was still in flight.
#ifdef CONFIG_ADS7952_MANUAL_READ_MAX_FRAMES
inline constexpr uint8_t MANUAL_READ_MAX_FRAMES = CONFIG_ADS7952_MANUAL_READ_MAX_FRAMES;
#else
inline constexpr uint8_t MANUAL_READ_MAX_FRAMES = 4;
#endif
 
// ---- Max retries for mode change / programming operations ------------------
#ifdef CONFIG_ADS7952_MAX_RETRIES
inline constexpr uint8_t MAX_RETRIES = CONFIG_ADS7952_MAX_RETRIES;
#else
inline constexpr uint8_t MAX_RETRIES = 3;
#endif
 
} // namespace ADS7952_CFG