jim hamblen
Test an Adafruit single VL53L0X breakout board using the mbed LPC1768 and print distance measurement to PC
Dependencies: X_NUCLEO_53L0A1 mbed
Fork of
HelloWorld_53L0A1
by 
ST
https://os.mbed.com/users/kbeck8/notebook/alternative-control-for-remote-control-vehicle/ has a more complex example using three LIDAR breakouts for gesture detection on the same I2C bus using the shutdown pin (solves the issue of them having the same I2C address). The driver has support for three, but an AND gate is required unless the driver is changed. DigitalOut pins turn shutdown on/off on each LIDAR.
Diff: main.cpp
- Revision:
- 3:b3f70617a6b3
- Parent:
- 1:3483e701ec59
- Child:
- 4:c8932fb926d6
diff -r c0280060189b -r b3f70617a6b3 main.cpp
--- a/main.cpp Tue Nov 29 09:15:05 2016 +0000
+++ b/main.cpp Thu Dec 01 14:19:01 2016 +0000
@@ -22,95 +22,27 @@
#define VL53L0_I2C_SDA D14
#define VL53L0_I2C_SCL D15
-#define RANGE 0
-
static X_NUCLEO_53L0A1 *board=NULL;
-VL53L0X_RangingMeasurementData_t data_sensor_centre;
-OperatingMode operating_mode;
-
-/* flags that handle interrupt request */
-bool int_sensor_centre=false, int_stop_measure=false;
-
-/* ISR callback function of the sensor_centre */
-void SensorTopIRQ(void)
-{
- int_sensor_centre=true;
- board->sensor_centre->DisableInterruptMeasureDetectionIRQ();
-}
-
-/* ISR callback function of the user blue button to stop program */
-void StopMeasureIRQ(void)
-{
- int_stop_measure=true;
-}
-/* On board 4 digit local display refresh */
-void DisplayRefresh(OperatingMode op_mode)
-{
- char str[5];
-
- if (op_mode==range_single_shot_polling || op_mode==range_continuous_interrupt || op_mode==range_continuous_polling)
- {
- if (data_sensor_centre.RangeStatus == 0) // we have a valid range.
- {
- sprintf(str,"%d",data_sensor_centre.RangeMilliMeter);
- }
- else
- {
- sprintf(str,"%s","----");
- }
- }
-
- board->display->DisplayString(str);
-}
-
-void RangeMeasure(DevI2C *device_i2c) {
- int status;
-
- /* creates the 53L0A1 expansion board singleton obj */
- board=X_NUCLEO_53L0A1::Instance(device_i2c, A2, D8, D2);
-
- board->display->DisplayString("53L0");
- /* init the 53L0A1 expansion board with default values */
- status=board->InitBoard();
- if(status)
- printf("Failed to init board!\n\r");
-// operating_mode=range_continuous_polling;
- operating_mode=range_single_shot_polling;
- /* start the measure on sensor top */
- status=board->sensor_centre->StartMeasurement(operating_mode, SensorTopIRQ);
- if(!status)
- {
- while(1)
- {
- status=board->sensor_centre->GetMeasurement(operating_mode, &data_sensor_centre);
- DisplayRefresh(operating_mode);
- if(int_stop_measure) // Blue Button isr was triggered
- {
- status=board->sensor_centre->StopMeasurement(operating_mode); // stop the measure and exit
- int_stop_measure = false;
- printf("\nProgram stopped!\n\n\r");
- break;
- }
- }
- }
- board->display->DisplayString("BYE");
- delete board;
-}
/*=================================== Main ==================================
- Press the blue user button to stop the measurements in progress
=============================================================================*/
int main()
{
-#if USER_BUTTON==PC_13 // we are cross compiling for Nucleo-f401
- InterruptIn stop_button (USER_BUTTON);
- stop_button.rise (&StopMeasureIRQ);
-#endif
- DevI2C *device_i2c =new DevI2C(VL53L0_I2C_SDA, VL53L0_I2C_SCL);
-
- RangeMeasure(device_i2c); // start continuous measures
+ int status;
+ uint32_t distance;
+ DevI2C *device_i2c =new DevI2C(VL53L0_I2C_SDA, VL53L0_I2C_SCL);
+
+ /* creates the 53L0A1 expansion board singleton obj */
+ board=X_NUCLEO_53L0A1::Instance(device_i2c, A2, D8, D2);
+
+ /* init the 53L0A1 expansion board with default values */
+ status=board->InitBoard();
+ if(status) { printf("Failed to init board!\n\r"); return 0; }
+ while(1)
+ {
+ board->sensor_centre->GetDistance(&distance);
+ printf("Distance : %ld\n", distance);
+ }
}
-
-