OPT3101-SDK:Questions about calibration SDK step INLAB_STEP_1

Hi Guillermo,

Our OPT3101 expert will get back with you soon.

Jalen

Hi Gordon.
Thank you for your comments.
Just one more question, you mention that the calibration must be carried out with the Super-HDR or Auto-HDR mode off. Could you explain a little more about what this process would be like because if a configuration like this is made:

void OPT3101::device::initialize(void){
	// List of registers to initialize OPT3101 device after power-up

	this->reg.force_en_slave = 1; // //Since I2C Master bus is floating this register needs to be set to enable device to respond

	this->reg.tg_ovl_window_start = 7000; // //Overload flab observation window
	this->reg.en_temp_conv = 1; // //Enables the internal

	this->reg.clip_mode_fc = 1; // //Enables Clip mode for Frequency correction
	this->reg.clip_mode_temp = 0; // //Disables Clip mode for Temp coff phase correction
	this->reg.clip_mode_offset = 0; // //Disables Clip mode for phase offset correction
	this->reg.iq_read_data_sel = 3; // //Enables 16 bit frame counter
	this->reg.iamb_max_sel = 0; // //Sets maximum ambient support
	this->reg.en_temp_corr = 1; // //Enables Temperature Correction
	this->reg.gpio1_obuf_en=1; // //Enabled output buffer on GPIO1 pin
	this->reg.gpo1_mux_sel=2; 	    // //select dig_gpo_0 on gpio1
	this->reg.dig_gpo_sel0 = 9; 	// //Select Data Ready on dig_gpo_0

	this->reg.num_sub_frames = 127; // //Sub frames count
	this->reg.num_avg_sub_frames = 127; // //Average frames count
	this->reg.xtalk_filt_time_const = 3; // //Crosstalk filter time constant
	this->reg.tg_seq_int_start 	= 9850; // //Sequence Start
	this->reg.tg_seq_int_end 		= 9858; // //Sequence End
	this->reg.tg_seq_int_mask_start 	= 127; // //Same as AvgFrame Count
	this->reg.tg_seq_int_mask_end 	= 127; // //Same as AvgFrame Count

	this->reg.illum_dac_h_tx0 = 31; // //High Current settings [173.6mA:5.6mA X 31]
	this->reg.illum_scale_h_tx0 = 0; // //Illum scale for H [173.6mA:5.6mA X 31]

	this->reg.sel_hdr_mode = 1; // //Selecting H Channel by default

	this->reg.tx_seq_reg   = 2184; // //Setting TX Switching order
	this->reg.en_tx_switch = 1 ; // //Enable TX Switching order

	this->reg.tg_en = 1; // //Enables Timing Generator

	this->configurationFlags_xtalkFilterTau =  3; // //This is not a register but a settings flag for the SDK
	this->configurationFlags_monoshotMode =  false; // //This is not a register but a settings flag for the SDK
	this->configurationFlags_xtalkSettlingOneTauInMilliSeconds      =  256; // //This is not a register but a settings flag for the SDK
	this->configurationFlags_xtalkSettlingOneTauInDataReadyCounts   =  8; // //This is not a register but a settings flag for the SDK
	this->configurationFlags_frameTimeInMilliSeconds                =  32; // //This is not a register but a settings flag for the SDK
	this->configurationFlags_avgFrameCountExponentOfTwo             =  7; // //This is not a register but a settings flag for the SDK

}

OPT3101 works on a single channel, for my test it was TX0 HDR1, obviously I only calculated the lighting crosstolk for that channel, what about the rest of the channels?

I would have to do the calibration for the TX0 HDR0 channel and save the calibration values, then the same process but now with the TX0 HDR1 channel and so on in general.

Hi Guillermo,

Gordon will have to get back with you after the holiday

Jalen

Guillermo,

A couple of more questions. Are you using more than one emitter? I assumed that you had one emitter and one photodiode (Receiver). You should be using TX0 if you only have one emitter. TX1 only if you are using more than one emitter. 

The picture that you have presented shows two lenses. If one is the emitter and the other is the receiver, then you may have some optical crosstalk. If the emitter and receiver  can see each other in any way, then you will have a crosstalk issue. We typically have some kind of raised area between the two to prevent this. From your image you may need to place a raised edge between the emitter and receiver. Just thinking out loud. If you do have optical cross talk that would explain your issues.  

Let me know what you are thinking. 

Hi Gordon.
If I agree with you, following the SDK, the code guides you to do the calibration steps. Until now, I am at step INLAB_STEP_3.
I was confused when you mentioned that HDR must be turned off, when the SDK has it activated in its default configuration file and that is how the calibration is performed, but I think you mean that it can change the current level automatically while I calibrate at a determined distance and this can cause errors in the measurements after calibration, you just have to set the distances before the HDR0.1 current level changes and set it to amplitude values 16000 to 24000 for each level of HDR0.1.

It's clear now.
About your questions
* I only use one transmitter and one TX0 channel.
* Regarding elevation, you mean placing a division between the sender and receiver. I use the same concept as the EVM, I have an Isolation ring and LED HOLDER on the emitter and receiver.