![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
Example showing how to integrate EASE with proximity Sensor and Base board
Dependencies: mbed EsmacatShield X_NUCLEO_6180XA1
Information about Esmacat and EASE is provided in the link below. https://os.mbed.com/users/pratima_hb/code/EASE_Example/wiki/Homepage
Information about the hardware needs and setup is provided in the link below. https://os.mbed.com/users/pratima_hb/code/EASE_Example/wiki/Hardware-Setup
Information about the structure of the system and it's software is provided in the link below. https://os.mbed.com/users/pratima_hb/code/EASE_Example/wiki/Software
Diff: main.cpp
- Revision:
- 0:b706d6b7c1d3
- Child:
- 3:d3719ebf51c4
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Mon Sep 12 11:49:48 2016 +0000 @@ -0,0 +1,207 @@ +#include "mbed.h" +#include "x_nucleo_6180xa1.h" +#include <string.h> +#include <stdlib.h> +#include <stdio.h> +#include <assert.h> + +/* This VL6180X Expansion board test application performs a range measurement and an als measurement in interrupt mode + on the onboard embedded top sensor. + The board red slider select on the flight the measurement type as ALS or RANGE; the measured data is diplayed on the + on bord 4digits display. + + User Blue button allows to stop current measurement and the entire program releasing all the resources. + Reset button is used to restart the program. */ + +/* Polling operating modes don`t require callback function that handles IRQ + Callback IRQ functions are used only for measure that require interrupt */ + +/* GetMeasurement is asynchronous! It returns NOT_READY if the measurement value + is not ready to be read from the corresponding register. So you need to wait + for the result to be ready */ + +#define VL6180X_I2C_SDA D14 +#define VL6180X_I2C_SCL D15 + +#define RANGE 0 +#define ALS 1 + +static X_NUCLEO_6180XA1 *board=NULL; +MeasureData_t data_sensor_top; +OperatingMode operating_mode, prev_operating_mode; + +/* flags that handle interrupt request */ +bool int_sensor_top=false, int_stop_measure=false; + +/* ISR callback function of the sensor_top */ +void SensorTopIRQ(void) +{ + int_sensor_top=true; + board->sensor_top->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_continuous_interrupt || op_mode==range_continuous_polling) + { + if(data_sensor_top.range_mm!=0xFFFFFFFF) + { + sprintf(str,"%d",data_sensor_top.range_mm); + } + else + { + sprintf(str,"%s","----"); + } + } + else if(op_mode==als_continuous_interrupt || op_mode==als_continuous_polling) + { + if(data_sensor_top.lux!=0xFFFFFFFF) + { + sprintf(str,"%d",data_sensor_top.lux); + } + else + { + sprintf(str,"%s","----"); + } + } + board->display->DisplayString(str, strlen(str)); +} + +/* On board red slider position check */ +enum OpModeIntPoll_t{ PollMeasure, IntMeasure }; + +OperatingMode CheckSlider(enum OpModeIntPoll_t OpMode) { + +OperatingMode ret; +int measure= board->RdSwitch(); + + switch (OpMode) { + case PollMeasure: + if(measure==RANGE) + ret = range_continuous_polling; + else if(measure==ALS) + ret = als_continuous_polling; + break; + + case IntMeasure: + if(measure==RANGE) + ret = range_continuous_interrupt; + else if(measure==ALS) + ret = als_continuous_interrupt; + break; + } + return ret; +} + +/* Print on USB Serial the started OperatingMode */ +void PrintStartMessage(OperatingMode op_mode) +{ + if(op_mode==range_continuous_interrupt) + printf("\nStarted range continuous interrupt measure\n\r"); + else if(prev_operating_mode==als_continuous_interrupt) + printf("\nStarted als continuous interrupt measure\n\r"); +} + +/* Print on USB Serial the stopped OperatingMode */ +void PrintStopMessage(OperatingMode op_mode) +{ + if(op_mode==range_continuous_interrupt) + printf("Stopped range continuous interrupt measure\n\r"); + else if(prev_operating_mode==als_continuous_interrupt) + printf("Stopped als continuous interrupt measure\n\r"); +} + +/* Print on board 4 Digit display the indicated message <= 4 char */ +#define DELAY 2000 // 2Sec +void DisplayMsg(const char * msg) +{ + Timer timer; + char str[5]; + + timer.start(); + for(int i=0; i<DELAY; i=timer.read_ms()) + { + sprintf(str,"%s",msg); + board->display->DisplayString(str, strlen(str)); + } + timer.stop(); +} + + +void IntContinousALSorRangeMeasure (DevI2C *device_i2c) { + int status; + /* creates the 6180XA1 expansion board singleton obj */ + board=X_NUCLEO_6180XA1::Instance(device_i2c, A3, A2, D13, D2); + DisplayMsg ("INT"); + /* init the 6180XA1 expansion board with default values */ + status=board->InitBoard(); + if(status) + printf("Failed to init board!\n\r"); + /* check the red slider position for ALS/Range measure */ + operating_mode=CheckSlider(IntMeasure); + /* start the measure on sensor top */ + status=board->sensor_top->StartMeasurement(operating_mode, SensorTopIRQ, NULL, NULL); + if(!status) + { + prev_operating_mode=operating_mode; + PrintStartMessage(operating_mode); + while(1) + { + if(int_sensor_top) /* 6180 isr was triggered */ + { + int_sensor_top=false; + status=board->sensor_top->HandleIRQ(operating_mode, &data_sensor_top); /* handle the isr and read the meaure */ + DisplayRefresh(operating_mode); + } + if(int_stop_measure) /* Blue Button isr was triggered */ + { + status=board->sensor_top->StopMeasurement(prev_operating_mode); /* stop the measure and exit */ + if(!status) + PrintStopMessage(prev_operating_mode); + int_stop_measure = false; + printf("\nProgram stopped!\n\n\r"); + break; + } + operating_mode=CheckSlider(IntMeasure); /* check if red slider was moved */ + if(operating_mode!=prev_operating_mode) + { + DisplayRefresh(prev_operating_mode); + status=board->sensor_top->StopMeasurement(prev_operating_mode); /* stop the running measure */ + if(!status) + PrintStopMessage(prev_operating_mode); + prev_operating_mode=operating_mode; + status=board->sensor_top->StartMeasurement(operating_mode, SensorTopIRQ, NULL, NULL); /* start the new measure */ + if(!status) + PrintStartMessage(operating_mode); + } else + DisplayRefresh(operating_mode); + } + } + DisplayMsg("BYE"); +} + +/*=================================== Main ================================== + Move the VL6180X Expansion board red slider to switch between ALS or Range + measures. + 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(VL6180X_I2C_SDA, VL6180X_I2C_SCL); + + IntContinousALSorRangeMeasure (device_i2c); // start continous measures Interrupt based +} +