<![CDATA[Distance Visualization With Multiple SPAD areas in VL53L1X Time-of-Flight sensor]]>This example illustrates how to get information from multiple SPAD areas from VL53L1X TOF sensor. 16 Regions Of Interest(ROI) with size of 4 * 4 SPAD elements each are defined in SPAD sensor array. Thus, a 4 * 4 measurement matrix formed. Distances measured from each of 16 ROI, interpolated to 8 * 8 image and displayed as Thermal like image.
Code here:
https://yadi.sk/d/qpxO0fMItW4Qpw
Video here:
https://youtu.be/b18ghRCWawo

0_1549627639513_Distance.jpg

]]>https://community.m5stack.com/topic/591/distance-visualization-with-multiple-spad-areas-in-vl53l1x-time-of-flight-sensorRSS for NodeWed, 15 Apr 2026 21:56:32 GMTFri, 08 Feb 2019 12:08:19 GMT60<![CDATA[Reply to Distance Visualization With Multiple SPAD areas in VL53L1X Time-of-Flight sensor on Mon, 16 Dec 2019 22:01:51 GMT]]>hi, wich ino file I have to upload to visualize "thermal distance?

SPAD_read doesn't compile with this output:

Arduino: 1.8.9 (Mac OS X), Board: "M5Stack-Core-ESP32, QIO, 80MHz, Default, 921600, None"

sketch/SPAD_read.ino.cpp.o:(.literal._Z8checkDevP12VL53L1_Dev_t+0x8): undefined reference to `VL53L1_RdWord'
sketch/SPAD_read.ino.cpp.o:(.literal._Z5setupv+0x48): undefined reference to `VL53L1_WaitDeviceBooted'
sketch/SPAD_read.ino.cpp.o:(.literal._Z5setupv+0x4c): undefined reference to `VL53L1_DataInit'
sketch/SPAD_read.ino.cpp.o:(.literal._Z5setupv+0x50): undefined reference to `VL53L1_StaticInit'
sketch/SPAD_read.ino.cpp.o:(.literal._Z5setupv+0x54): undefined reference to `VL53L1_SetDistanceMode'
sketch/SPAD_read.ino.cpp.o:(.literal._Z5setupv+0x58): undefined reference to `VL53L1_SetMeasurementTimingBudgetMicroSeconds'
sketch/SPAD_read.ino.cpp.o:(.literal._Z5setupv+0x5c): undefined reference to `VL53L1_SetInterMeasurementPeriodMilliSeconds'
sketch/SPAD_read.ino.cpp.o:(.literal._Z5setupv+0x60): undefined reference to `VL53L1_StartMeasurement'
sketch/SPAD_read.ino.cpp.o:(.literal._Z4loopv+0xc): undefined reference to `VL53L1_SetUserROI'
sketch/SPAD_read.ino.cpp.o:(.literal._Z4loopv+0x10): undefined reference to `VL53L1_WaitMeasurementDataReady'
sketch/SPAD_read.ino.cpp.o:(.literal._Z4loopv+0x14): undefined reference to `VL53L1_GetRangingMeasurementData'
sketch/SPAD_read.ino.cpp.o:(.literal._Z4loopv+0x18): undefined reference to `VL53L1_clear_interrupt_and_enable_next_range'
sketch/SPAD_read.ino.cpp.o: In function `checkDev(VL53L1_Dev_t*)':
Multiple libraries were found for "SPI.h"
 Used: /Library/Arduino15/packages/esp32/hardware/esp32/1.0.2/libraries/SPI
 Not used: /Documents/Arduino/libraries/SPI
Multiple libraries were found for "SD.h"
/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/arduino_modified_sketch_71183/SPAD_read.ino:170: undefined reference to `VL53L1_RdWord'
 Used: /Users/Library/Arduino15/packages/esp32/hardware/esp32/1.0.2/libraries/SD
 Not used: /Users/Documents/Arduino/libraries/SD
sketch/SPAD_read.ino.cpp.o: In function `setup()':
 Not used: /private/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/AppTranslocation/65325227-2EA8-4077-950D-C93B6E24B2C5/d/Arduino-1.8.9.app/Contents/Java/libraries/SD
Multiple libraries were found for "WiFiClient.h"
 Used: /Users/Library/Arduino15/packages/esp32/hardware/esp32/1.0.2/libraries/WiFi
 Not used: /private/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/AppTranslocation/65325227-2EA8-4077-950D-C93B6E24B2C5/d/Arduino-1.8.9.app/Contents/Java/libraries/WiFi
/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/arduino_modified_sketch_71183/SPAD_read.ino:170: undefined reference to `VL53L1_WaitDeviceBooted'
/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/arduino_modified_sketch_71183/SPAD_read.ino:170: undefined reference to `VL53L1_DataInit'
/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/arduino_modified_sketch_71183/SPAD_read.ino:170: undefined reference to `VL53L1_StaticInit'
/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/arduino_modified_sketch_71183/SPAD_read.ino:170: undefined reference to `VL53L1_SetDistanceMode'
/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/arduino_modified_sketch_71183/SPAD_read.ino:170: undefined reference to `VL53L1_SetMeasurementTimingBudgetMicroSeconds'
/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/arduino_modified_sketch_71183/SPAD_read.ino:170: undefined reference to `VL53L1_SetInterMeasurementPeriodMilliSeconds'
/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/arduino_modified_sketch_71183/SPAD_read.ino:170: undefined reference to `VL53L1_StartMeasurement'
sketch/SPAD_read.ino.cpp.o: In function `loop()':
/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/arduino_modified_sketch_71183/SPAD_read.ino:137: undefined reference to `VL53L1_SetUserROI'
/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/arduino_modified_sketch_71183/SPAD_read.ino:139: undefined reference to `VL53L1_WaitMeasurementDataReady'
/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/arduino_modified_sketch_71183/SPAD_read.ino:140: undefined reference to `VL53L1_GetRangingMeasurementData'
/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/arduino_modified_sketch_71183/SPAD_read.ino:141: undefined reference to `VL53L1_clear_interrupt_and_enable_next_range'
collect2: error: ld returned 1 exit status
exit status 1
Error compiling for board M5Stack-Core-ESP32.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
]]>https://community.m5stack.com/post/6720https://community.m5stack.com/post/6720Mon, 16 Dec 2019 22:01:51 GMT