Hello, this is my first post as I couldn’t find the answer anywhere.
I have been trying to play with two cubecell capsules I bought. My plan is to use them with TTN but so far I wanted to make some Lora tests. The thing is that the battery gets exhausted extremely fast. I suspect there is a problem with the capsules…
I have loaded the basic LoRa example to read and send the battery:
/* Heltec Automation Ping Pong communication test example
*
- Function:
- CubeCell read battery voltage and transmit via LoRa.
- Description:
- Only hardware layer communicate, no LoRaWAN protocol support;
- This examplese can communicate with other ESP32 LoRa device,
- WiFi LoRa 32, Wireless Stick, Wireless Stick Lite, etc.
- This example is for CubeCell hardware basic test.
- HelTec AutoMation, Chengdu, China
- �ɶ��������Զ����Ƽ�����˾
- this project also realess in GitHub:
- */
#include “LoRaWan_APP.h”
#include “Arduino.h”/*
- set LoraWan_RGB to 1,the RGB active in loraWan
- RGB red means sending;
- RGB green means received done;
*/
#ifndef LoraWan_RGB
#define LoraWan_RGB 0
#endif#define RF_FREQUENCY 868000000 // Hz
#define TX_OUTPUT_POWER 14 // dBm
#define LORA_BANDWIDTH 0 // [0: 125 kHz,
// 1: 250 kHz,
// 2: 500 kHz,
// 3: Reserved]
#define LORA_SPREADING_FACTOR 8 // [SF7…SF12]
#define LORA_CODINGRATE 4 // [1: 4/5,
// 2: 4/6,
// 3: 4/7,
// 4: 4/8]
#define LORA_PREAMBLE_LENGTH 8 // Same for Tx and Rx
#define LORA_SYMBOL_TIMEOUT 0 // Symbols
#define LORA_FIX_LENGTH_PAYLOAD_ON false
#define LORA_IQ_INVERSION_ON false#define RX_TIMEOUT_VALUE 1000
#define BUFFER_SIZE 30 // Define the payload size herechar txPacket[BUFFER_SIZE];
static RadioEvents_t RadioEvents;
void OnTxDone( void );
void OnTxTimeout( void );typedef enum
{
LOWPOWER,
ReadVoltage,
TX
}States_t;States_t state;
bool sleepMode = false;
int16_t rssi,rxSize;
uint16_t voltage;void setup() {
boardInitMcu( );
Serial.begin(115200);voltage = 0; rssi=0; RadioEvents.TxDone = OnTxDone; RadioEvents.TxTimeout = OnTxTimeout; Radio.Init( &RadioEvents ); Radio.SetChannel( RF_FREQUENCY ); Radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH, LORA_SPREADING_FACTOR, LORA_CODINGRATE, LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON, true, 0, 0, LORA_IQ_INVERSION_ON, 3000 ); state=ReadVoltage;}
void loop()
{
switch(state)
{
case TX:
{
sprintf(txPacket,"%s",“ADC_battery: “);
sprintf(txPacket+strlen(txPacket),”%d”,voltage);
turnOnRGB(COLOR_SEND,0);
//Serial.printf("\r\nsending packet “%s” , length %d\r\n",txPacket, strlen(txPacket));
Radio.Send( (uint8_t *)txPacket, strlen(txPacket) );
state=LOWPOWER;
break;
}
case LOWPOWER:
{
lowPowerHandler();
delay(50);
turnOffRGB();
delay(60000); //LowPower time
state = ReadVoltage;
break;
}
case ReadVoltage:
{
pinMode(VBAT_ADC_CTL,OUTPUT);
digitalWrite(VBAT_ADC_CTL,LOW);
voltage=analogRead(ADC)*2;/* * Board, BoardPlus, Capsule, GPS and HalfAA variants * have external 10K VDD pullup resistor * connected to GPIO7 (USER_KEY / VBAT_ADC_CTL) pin */ pinMode(VBAT_ADC_CTL, INPUT); state = TX; break; } default: break;}
Radio.IrqProcess();
}void OnTxDone( void )
{
turnOnRGB(0,0);
}void OnTxTimeout( void )
{
Radio.Sleep( );
state=ReadVoltage;
}
I removed every serial and have reset the capsule after disconnecting. However I get the following reading while the Capsule is supposed to be deep sleeping. Current 9mA! I believe that is the reason for the fast draining… anyone can tell me if I am doing something wrong?
When sending the power goes up to 11 which I am assuming is normal.
Thanks!