How would I implement two separate interrupts for wake up by GPIO?
For example I want to use both GPIO6 and GPIO9 as interrupts to wake up from sleep.
Does anyone have an example they can post or an idea on how to get started?
I am using the 1/2 AA module.
Thanks
Here is the code that works and wakes up from sleep with one GPIO interrupt - GPIO6
#include “Arduino.h”
#define INT_GPIO GPIO6
#define timetillsleep 1000
static TimerEvent_t sleep;
uint8_t lowpower=1;
//************************************************
#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 915000000 // Hz
#define TX_OUTPUT_POWER 20 // dBm
#define LORA_BANDWIDTH 0 // [0: 125 kHz,
// 1: 250 kHz,
// 2: 500 kHz,
// 3: Reserved]
#define LORA_SPREADING_FACTOR 10 // [SF7…SF12]
#define LORA_CODINGRATE 1 // [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 here
char txpacket[BUFFER_SIZE];
char rxpacket[BUFFER_SIZE];
static RadioEvents_t RadioEvents;
double txNumber;
int16_t rssi,rxSize;
void DoubleToString( char *str, double double_num,unsigned int len);
//************************************************
void onSleep()
{
Serial.printf(“Going into lowpower mode. Press user key to wake up\r\n”);
lowpower=1;
}
void onWakeUp()
{
delay(10);
if(digitalRead(INT_GPIO) == 0)
{
Serial.printf(“Woke up by GPIO, %d ms later into lowpower mode.\r\n”,timetillsleep);
lowpower=0;
//timetillsleep ms later into lowpower mode;
TimerSetValue( &sleep, timetillsleep );
TimerStart( &sleep );
}
}
void setup() {
// put your setup code here, to run once:
//***************************************************************************************
boardInitMcu( );
Serial.begin(115200);
txNumber=0;
rssi=0;
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 );
//***************************************************************************************
//Serial.begin(115200);
pinMode(INT_GPIO,INPUT);
attachInterrupt(INT_GPIO,onWakeUp,FALLING);
TimerInit( &sleep, onSleep );
Serial.printf(“Going into lowpower mode. Press user key to wake up\r\n”);
}
void loop() {
Radio.Sleep( );
while(lowpower){
//note that lowPowerHandler() runs six times before the mcu goes into lowpower mode;
lowPowerHandler();
}
// put your main code here, to run repeatedly:
//*********************************************************************************
Serial.printf(“woken up-with just this stops at 6 mcu cycles\r\n”);
//delay(10);
//****************************************************************************************************************
//txNumber += 0.01;
txNumber += 1;
sprintf(txpacket,"%s",“Hello world number”); //start a package
sprintf(txpacket+strlen(txpacket),"%d",txNumber); //add to the end of package
DoubleToString(txpacket,txNumber,3); //add to the end of package
//turnOnRGB(COLOR_SEND,0); //change rgb color
Serial.printf("\r\nsending packet “%s” , length %d\r\n",txpacket, strlen(txpacket));
Radio.Send( (uint8_t *)txpacket, strlen(txpacket) ); //send the package out
//**************************************************************************************************************
delay(1000);
}
void DoubleToString( char *str, double double_num,unsigned int len) {
double fractpart, intpart;
fractpart = modf(double_num, &intpart);
fractpart = fractpart * (pow(10,len));
sprintf(str + strlen(str),"%d", (int)(intpart)); //Integer part
sprintf(str + strlen(str), “.%d”, (int)(fractpart)); //Decimal part
}