the blinking blue light in the sensor means that is not connected via BLE with MySignals. We have checked that the sensor in this state (blinking light - not connected) always turns off automatically at passed 3 minutes.
Anyway, there is a way to turn off the sensor by sending a command through MySignals once the connection is made
MySignals_BLE.attributeWrite(MySignals_BLE.connection_handle.connection_handle, 18, "i");
For example you can use the basic code to take a measure that includes this line at the end:
/*
Copyright (C) 2017 Libelium Comunicaciones Distribuidas S.L.
http://www.libelium.com
By using it you accept the MySignals Terms and Conditions.
You can find them at: http://libelium.com/legal
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Version: 2.0
Design: David Gascon
Implementation: Luis Martin / Victor Boria
*/
#include <Adafruit_GFX_AS.h>
#include <Adafruit_ILI9341_AS.h>
#include <MySignals.h>
#include <MySignals_BLE.h>
// Write here the MAC address of BLE device to find
char MAC_BP[14] = "A4D57812A409";
uint8_t available_bp = 0;
uint8_t connected_bp = 0;
uint8_t connection_handle_bp = 0;
#define BP_HANDLE 18
char buffer_tft[30];
Adafruit_ILI9341_AS tft = Adafruit_ILI9341_AS(TFT_CS, TFT_DC);
//!Struct to store data of the glucometer.
struct bloodPressureBLEDataVector
{
uint16_t systolic;
uint16_t diastolic;
uint16_t pulse;
};
//!Vector to store the glucometer measures and dates.
bloodPressureBLEDataVector bloodPressureBLEData;
void setup()
{
MySignals.begin();
tft.init();
tft.setRotation(2);
tft.fillScreen(ILI9341_BLACK);
tft.setTextColor(ILI9341_WHITE, ILI9341_BLACK);
//TFT message: Welcome to MySignals
strcpy_P((char*)buffer_tft, (char*)pgm_read_word(&(table_MISC[0])));
tft.drawString(buffer_tft, 0, 0, 2);
Serial.begin(115200);
MySignals.initSensorUART();
MySignals.enableSensorUART(BLE);
//Enable BLE module power -> bit6: 1
bitSet(MySignals.expanderState, EXP_BLE_POWER);
MySignals.expanderWrite(MySignals.expanderState);
//Enable BLE UART flow control -> bit5: 0
bitClear(MySignals.expanderState, EXP_BLE_FLOW_CONTROL);
MySignals.expanderWrite(MySignals.expanderState);
//Disable BLE module power -> bit6: 0
bitClear(MySignals.expanderState, EXP_BLE_POWER);
MySignals.expanderWrite(MySignals.expanderState);
delay(500);
//Enable BLE module power -> bit6: 1
bitSet(MySignals.expanderState, EXP_BLE_POWER);
MySignals.expanderWrite(MySignals.expanderState);
delay(1000);
MySignals_BLE.initialize_BLE_values();
if (MySignals_BLE.initModule() == 1)
{
if (MySignals_BLE.sayHello() == 1)
{
//TFT message: "BLE init ok";
strcpy_P((char*)buffer_tft, (char*)pgm_read_word(&(table_MISC[1])));
tft.drawString(buffer_tft, 0, 15, 2);
}
else
{
//TFT message:"BLE init fail"
strcpy_P((char*)buffer_tft, (char*)pgm_read_word(&(table_MISC[2])));
tft.drawString(buffer_tft, 0, 15, 2);
while (1)
{
};
}
}
else
{
//TFT message: "BLE init fail"
strcpy_P((char*)buffer_tft, (char*)pgm_read_word(&(table_MISC[2])));
tft.drawString(buffer_tft, 0, 15, 2);
while (1)
{
};
}
}
void loop()
{
available_bp = MySignals_BLE.scanDevice(MAC_BP, 1000, TX_POWER_MAX);
tft.drawString("BP available:", 0, 30, 2);
tft.drawNumber(available_bp, 110, 30, 2);
if (available_bp == 1)
{
if (MySignals_BLE.connectDirect(MAC_BP) == 1)
{
tft.drawString("Connected ", 0, 45, 2);
connected_bp = 1;
delay(8000);
//To subscribe the BP measure write an ASCII letter "e"
if (MySignals_BLE.attributeWrite(MySignals_BLE.connection_handle, BP_HANDLE, "e", 1) == 0)
{
tft.drawString("Subscribed", 0, 60, 2);
unsigned long previous = millis();
do
{
if (MySignals_BLE.waitEvent(1000) == BLE_EVENT_ATTCLIENT_ATTRIBUTE_VALUE)
{
//Search letter "g" in ASCII
if (MySignals_BLE.event[9] == 0x67)
{
if (MySignals_BLE.event[10] == 0x2f)
{
//Ojo esto esta mal en la guia de comandos
//Primero da la alta -> sistolica
uint8_t sh = MySignals_BLE.event[11] - 48;
uint8_t sm = MySignals_BLE.event[12] - 48;
uint8_t sl = MySignals_BLE.event[13] - 48;
bloodPressureBLEData.systolic = (sh * 100) + (sm * 10) + sl;
//Primero da la baja -> diastolica
uint8_t dh = MySignals_BLE.event[15] - 48;
uint8_t dm = MySignals_BLE.event[16] - 48;
uint8_t dl = MySignals_BLE.event[17] - 48;
bloodPressureBLEData.diastolic = (dh * 100) + (dm * 10) + dl;
uint8_t ph = MySignals_BLE.event[19] - 48;
uint8_t pm = MySignals_BLE.event[20] - 48;
uint8_t pl = MySignals_BLE.event[21] - 48;
bloodPressureBLEData.pulse = (ph * 100) + (pm * 10) + pl;
sprintf(buffer_tft, "S:%d D:%d P:%d ", bloodPressureBLEData.systolic, bloodPressureBLEData.diastolic, bloodPressureBLEData.pulse);
tft.drawString(buffer_tft, 0, 75, 2);
connected_bp = 0;
}
}
}
}
while ((connected_bp == 1) && ((millis() - previous) < 40000));
MySignals_BLE.attributeWrite(MySignals_BLE.connection_handle, BP_HANDLE, "i" , 1);
delay(100);
MySignals_BLE.disconnect(MySignals_BLE.connection_handle);
connected_bp = 0;
}
else
{
tft.drawString("Error subscribing", 0, 60, 2);
}
}
else
{
connected_bp = 0;
tft.drawString("Not Connected", 0, 45, 2);
}
}
else if (available_bp == 0)
{
//Do nothing
}
else
{
MySignals_BLE.hardwareReset();
MySignals_BLE.initialize_BLE_values();
delay(100);
}
delay(1000);
}
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