Hi all,
I'm working with a pressure sensor (LPS22HBTR) and the nRF52-DK and I have some issues when sending data through BLE (nRF52832). When I run the program without BLE it works, but when I connect the nRF52 to a device (I don't even send data) the program crushes. The app (LightBlue) doesn't even tell me that the device is disconnected or something like that.
I have attached the code related to this part of the program.
#include <Arduino.h>
#include <BLEPeripheral.h>
#include <Wire.h>
#include <WireCrc.h>
#include <WireSlave.h>
#include <MPU6050.h>
#include "HX711.h"
#include <Adafruit_LPS2X.h>
#include <Adafruit_Sensor.h>
#include <WireSlaveRequest.h>
BLEPeripheral blePeripheral = BLEPeripheral();
//AIRFLOW SERVICE 0000FFC0-0000-1000-8000-00805F9B34FB
BLEService AirflowService("ffc0");
BLEIntCharacteristic rightLung_Char("ffc1", BLERead | BLENotify);
BLEDescriptor RLDescriptor("2901", "RIGHT LUNG");
BLEIntCharacteristic leftLung_Char("ffc2", BLERead | BLENotify);
BLEDescriptor LLDescriptor("2901", "LEFT LUNG");
BLEIntCharacteristic stomach_Char("ffc3", BLERead | BLENotify);
BLEDescriptor StomachDescriptor("2901", "STOMACH");
//AIRFLOW VARIABLES
Adafruit_LPS22 lps1;
Adafruit_LPS22 lps2;
Adafruit_LPS22 lps3;
// For SPI mode, we need a CS pin
#define LPS_CS1 10
#define LPS_CS2 9
#define LPS_CS3 8
// For software-SPI mode we need SCK/MOSI/MISO pins I HAVE ISSUES WITH THIS
#define LPS_SCK 13
#define LPS_MISO 12
#define LPS_MOSI 11
float origin1 = 0;
float origin2 = 0;
float origin3 = 0;
int rightLung = 0;
int leftLung = 0;
int stomach = 0;
int count = 0;
void setup() {
Serial.begin(115200);
Wire.begin();
// AIRFLOW SETUP
if (!lps1.begin_SPI(LPS_CS1)) {
Serial.println("Failed to find LPS22 chip 1");
while (1) { delay(10); }
}
if (!lps2.begin_SPI(LPS_CS2)) {
Serial.println("Failed to find LPS22 chip 2");
while (1) { delay(10); }
}
if (!lps2.begin_SPI(LPS_CS2)) {
Serial.println("Failed to find LPS22 chip 2");
while (1) { delay(10); }
}
//BLE SETUP
blePeripheral.setAdvertisedServiceUuid(AirflowService.uuid());
blePeripheral.addAttribute(AirflowService);
blePeripheral.addAttribute(rightLung_Char);
blePeripheral.addAttribute(RLDescriptor);
blePeripheral.addAttribute(leftLung_Char);
blePeripheral.addAttribute(LLDescriptor);
blePeripheral.addAttribute(stomach_Char);
blePeripheral.addAttribute(StomachDescriptor);
blePeripheral.begin();
}
void loop() {
//Airflow(); //WORKS
//blePeripheral.poll();
BLECentral central = blePeripheral.central();
if (central) {
// central connected to peripheral
Serial.print(F("Connected to central: "));
Serial.println(central.address());
while (central.connected()) {
Airflow(); //CRASH
delay(100);
}
Serial.print(F("Disconnected from central: "));
Serial.println(central.address());
}
}
void Airflow() {
sensors_event_t temp1;
sensors_event_t pressure1;
lps1.getEvent(&pressure1, &temp1);
sensors_event_t temp2;
sensors_event_t pressure2;
lps2.getEvent(&pressure2, &temp2);
sensors_event_t temp3;
sensors_event_t pressure3;
lps3.getEvent(&pressure3, &temp3);
while (count == 0){
origin1 = ((pressure1.pressure)* 1000);
origin2 = ((pressure2.pressure)* 1000);
origin3 = ((pressure3.pressure)* 1000);
count = 1;
}
rightLung = ((pressure1.pressure) * 1000) - origin1;
stomach = ((pressure2.pressure) * 1000) - origin2;
leftLung = ((pressure3.pressure) * 1000) - origin3;
if (rightLung < 0)
rightLung = 0;
if (leftLung < 0)
leftLung = 0;
if (stomach < 0)
stomach = 0;
Serial.print(leftLung);
Serial.print(" . ");
Serial.print(stomach);
Serial.print(" . ");
Serial.println(rightLung);
Serial.println();
// rightLung_Char.setValueLE(rightLung);
// leftLung_Char.setValueLE(leftLung);
//stomach_Char.setValueLE(stomach);
//delay(100);
}
I'm not sure what's the problem, I need help with this. Any other idea or another way of doing this?
