ST VD6283 - Appendix A Examples; ALS Measure in Single Shot Mode; ALS Measure in Synchronous Mode

Appendix A Examples
A.1 ALS measure in single shot mode
CustomerPrivate client;
void *hdl;
// sensor initialization
Error = STALS_Init("VD6283", &client, &hdl);
// First configure device settings
Error = STALS_SetExposureTime(hdl, 10000, &current_exposure);
Error = STALS_SetGain(hdl, STALS_CHANNEL_1, 0x0100, &current_gain);
// Start ALS acquisition
Error = STALS_Start(hdl, STALS_MODE_ALS_SINGLE_SHOT, STALS_CHANNEL_1);
// poll until acquisition is completed
do {
Error = STALS_GetAlsValues(hdl, STALS_CHANNEL_1, &meas, &is_valid);
} while(!is_valid);
// display acquisition
printf("channel 1 count = %d\n", meas.CountValue[0]);
// stop acquisition
Error = STALS_Stop(hdl, STALS_MODE_ALS_SINGLE_SHOT);
// Release sensor
Error = STALS_Term(&hdl);
A.2 ALS measure in synchronous mode
CustomerPrivate client;
void *hdl;
// sensor initialization
Error = STALS_Init("VD6283", &client, &hdl);
// First configure sensor settings
Error = STALS_SetInterMeasurementTime(hdl, 1000000, &current_inter_measurement);
Error = STALS_SetExposureTime(hdl, 100000, &current_exposure);
Error = STALS_SetGain(hdl, STALS_CHANNEL_1, 0x0100, &current_gain);
Error = STALS_SetGain(hdl, STALS_CHANNEL_2, 0x0100, &current_gain);
// Start ALS acquisition
Error = STALS_Start(hdl, STALS_MODE_ALS_SYNCHRONOUS, STALS_CHANNEL_1 | STALS_CHANNEL_2);
// poll until acquisition is completed
for(loop = 0; loop < 10; loop++) {
do {
Error = STALS_GetAlsValues(hdl, STALS_CHANNEL_1 | STALS_CHANNEL_2, &meas, &is_valid);
} while(!is_valid);
// display acquisition
printf("loop measure %d %6d / %6d\n", loop, meas.CountValue[0], meas.CountValue[1]);
}
// stop acquisition
Error = STALS_Stop(hdl, STALS_MODE_ALS_SYNCHRONOUS);
// Release sensor
Error = STALS_Term(&hdl);
UM2878
Examples
UM2878 - Rev 1
page 21/27