AlxVeml6040 - Basic Implementation

[tomazvidovic]

Recommended interface:

void AlxVeml6040_Ctor
(
    AlxVeml6040* me,
    AlxI2c* i2c,
    uint8_t i2cAddr,
    bool i2cCheckWithRead,
    uint8_t i2cNumOfTries,
    uint16_t i2cTimeout_ms
);
Alx_Status AlxVeml6040_Init(AlxVeml6040* me);
Alx_Status AlxVeml6040_DeInit(AlxVeml6040* me);
Alx_Status AlxVeml6040_GetR_raw(AlxVeml6040* me, uint16_t* R_raw);
Alx_Status AlxVeml6040_GetG_raw(AlxVeml6040* me, uint16_t* G_raw);
Alx_Status AlxVeml6040_GetB_raw(AlxVeml6040* me, uint16_t* B_raw);
Alx_Status AlxVeml6040_GetW_raw(AlxVeml6040* me, uint16_t* W_raw);

Notes

• we will use raw data from sensor for start
• relevant doc are here H:\Shared drives\AuralixPrj_AuralixCCppLib\Task\ALX-202-1-TASK-3--AlxVeml6040
• veml6040.pdf -> here is NOT clear what are default values of this register
• seems like we want to use it in this mode settings
• it would be got to support all options, relevant to init config
• good reference example for unions system is alxPcal6416a

---

• for conversion of MSB & LSB data bytes it's recommended to use Unions and NOT BIT SHIFTING!
• see system for AlxAdxl355_Temp_12bit --> Here Union is used for converting 2x RAW bytes MSB & LSB to uint16_t value, something similar you will need todo..

  typedef union
  {
  uint16_t val;
  uint8_t raw[2];
  } AlxAdxl355_Temp_12bit;

---

• for Init system use same as in alxPcal6416a

  // Set register struct values to default
  AlxPcal6416a_RegStruct_SetValToDefault(me);
  
  // Set register struct values - WEAK
  AlxPcal6416a_RegStruct_SetVal(me);
  
  // Write register struct - WEAK
  status = AlxPcal6416a_RegStruct_Write(me);
  if (status != Alx_Ok) { ALX_PCAL6416A_TRACE("Err"); return status; }

• for WEAK function implementation you can see https://github.com/auralix/nxp-9-af-10-wbd-cradle-fw