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LSatan / SmartRC-CC1101-Driver-Lib

This driver library can be used for many libraries that use a simple RF ASK module, with the advantages of the cc1101 module. It offers many direct setting options as in SmartRF Studio and calculates settings such as MHz directly.
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Frequency_scanner #47

Open DavidAntonin opened 4 years ago

DavidAntonin commented 4 years ago

Hello,

thank you for your work. Can you release new version of Frequency scanner working with new version of library? I used this utility to find exact transmiting frequency of my remotes and sensors. Than I finetuned receiving frequency of CC1101 together with narrow bandwidth for better range. Thank you

LSatan commented 4 years ago

Hi, Thank you for your interest. I have rebuilt and improved the frequency scanner. He is now less prone to errors and works a little faster.


#include <ELECHOUSE_CC1101_SRC_DRV.h>

float start_freq = 433;
float stop_freq = 434;

float freq = start_freq;
long compare_freq;
float mark_freq;
int rssi;
int mark_rssi=-100;

void setup() {
Serial.begin(115200);
ELECHOUSE_cc1101.Init();
ELECHOUSE_cc1101.setRxBW(58);
ELECHOUSE_cc1101.SetRx();
Serial.println("Frequency Scanner Ready");
}

void loop() {
ELECHOUSE_cc1101.setMHZ(freq);
rssi = ELECHOUSE_cc1101.getRssi();

if (rssi>-75){
if (rssi > mark_rssi){
mark_rssi = rssi;  
mark_freq = freq;
}
}

freq+=0.01;

if (freq>stop_freq){
freq=start_freq;

if (mark_rssi>-75){

long fr = mark_freq*100;

if (fr == compare_freq){
Serial.print("Freq: ");
Serial.println(mark_freq);
Serial.print("Rssi: ");
Serial.println(mark_rssi);
mark_rssi=-100;
compare_freq = 0;
mark_freq = 0;
}else{
compare_freq = mark_freq*100;
freq = mark_freq -0.10;
mark_freq=0;
mark_rssi=-100;
}
}
}
}

Regards

hzhh110 commented 3 years ago

Hello,

thank you for your work. Can you release new version of Frequency scanner working with new version of library? I used this utility to find exact transmiting frequency of my remotes and sensors. Than I finetuned receiving frequency of CC1101 together with narrow bandwidth for better range. Thank you

Hello, how are you doing? I have been searching for frequency hopping, but the problem of frequency doubling is very serious. We can't distinguish between those [433.92 and 868 < 410 and 820 >...]. Do you have any solutions?

` float SearchFrequency(float mhz,float freqSpace,boolean isDetails); float searchFrequencyForRange(float startMhz,float endMhz,float freqSpace,boolean isDetails); void setup() { delay(3000); Serial.begin(115200); ELECHOUSE_cc1101.Init(); ELECHOUSE_cc1101.setRxBW(58); ELECHOUSE_cc1101.SetRx(); // Serial.println("Frequency Scanner Ready"); Serial.println("Frequency Scanner Ready"); }

float searchFrequency(float mhz,float freqSpace,boolean isDetails){ float start_freq = mhz; float stop_freq = mhz + 1; float freq = mhz; long compare_freq; float mark_freq; int rssi; int mark_rssi=-100; int searchTime = 0; ELECHOUSE_cc1101.Init(); ELECHOUSE_cc1101.setMHZ(mhz); ELECHOUSE_cc1101.setRxBW(58.03); ELECHOUSE_cc1101.SetRx(); delay(20); while (1) { searchTime ++; ELECHOUSE_cc1101.setMHZ(freq); rssi = ELECHOUSE_cc1101.getRssi(); 

    if (rssi>-75){
        if (rssi > mark_rssi){
            mark_rssi = rssi;  
            mark_freq = freq;
        }
    }

    freq+=freqSpace;
    if (freq>stop_freq){
        // Serial.print("freq>stop_freq");
        freq=start_freq;
        if (mark_rssi>-75){
            long fr = mark_freq*100;
            if (fr == compare_freq){
                Serial.print("freq:");
                Serial.println(freq);
                Serial.print("rssi:");
                Serial.println(rssi);
                Serial.print("mark_freq: ");
                Serial.println(mark_freq);
                Serial.print("searchTime: ");
                Serial.println(searchTime);
                float saveMarkFreq  =  mark_freq;
                mark_rssi=-100;
                compare_freq = 0;
                mark_freq = 0;                   
                if (isDetails)
                {
                    return saveMarkFreq;
                }else
                {   
                    float startSaveMarkFreq = (int)saveMarkFreq-3;
                    float endSaveMarkFreq = (int)saveMarkFreq+3;
                    float  getDetailsRequency =  searchFrequencyForRange(startSaveMarkFreq,endSaveMarkFreq,0.01,true);
                    return getDetailsRequency;
                }                    
            }else{
                    compare_freq = mark_freq*100;
                    freq = mark_freq -0.10;
                    mark_freq=0;
                    mark_rssi=-100;
            }
     }else{
            return -1;
     }
 }
}

} float searchFrequencyForRange(float startMhz,float endMhz,float freqSpace,boolean isDetails ){ while (1) { float frequency = searchFrequency(startMhz,freqSpace,isDetails);

        if (frequency != -1)
        {
            return frequency;
        }
        startMhz ++;
        if (startMhz >endMhz)
        {
            return -1;
        }
    }

} void loop() { float loopFrequency; loopFrequency = searchFrequencyForRange(300,347,0.1,true); Serial.print("loopFrequency:315 "); Serial.println(loopFrequency); loopFrequency = searchFrequencyForRange(388,463,0.1,true); Serial.print("loopFrequency:433 "); Serial.println(loopFrequency); loopFrequency = searchFrequencyForRange(779,927,0.1,true); Serial.print("loopFrequency:868 "); Serial.println(loopFrequency); }

`

hzhh110 commented 3 years ago

Hello, boss, I am now encountering <433.92 and 867.8>, <390 and 780> the problem of doubling the frequency. Is there any trick to crack it?

LSatan commented 3 years ago

Sure... the highest rssi is worth your frequency. You can exclude the wrong frequencies with rssi threshold.

check rssi_threshold = -35; you recive nothing? than test -40; you receive to much? than test -30; and so on. if it still does not bring the desired success. Please notify you again.


#include <ELECHOUSE_CC1101_SRC_DRV.h>

float start_freq = 433;    //start scan frequency set.
float stop_freq = 434;    //stop scan frequency set.
int rssi_threshold = -75; // set the threshold to react. the value should be between -20 and -90. recommended -75.

float freq = start_freq;
long compare_freq;
float mark_freq;
int rssi;
int mark_rssi=-100;

void setup() {
Serial.begin(115200);
ELECHOUSE_cc1101.Init();
ELECHOUSE_cc1101.setRxBW(58);
ELECHOUSE_cc1101.SetRx();
Serial.println("Frequency Scanner Ready");
}

void loop() {
ELECHOUSE_cc1101.setMHZ(freq);
rssi = ELECHOUSE_cc1101.getRssi();

if (rssi>rssi_threshold){
if (rssi > mark_rssi){
mark_rssi = rssi;  
mark_freq = freq;
}
}

freq+=0.01;

if (freq>stop_freq){
freq=start_freq;

if (mark_rssi>rssi_threshold){

long fr = mark_freq*100;

if (fr == compare_freq){
Serial.print("Freq: ");
Serial.println(mark_freq);
Serial.print("Rssi: ");
Serial.println(mark_rssi);
mark_rssi=-100;
compare_freq = 0;
mark_freq = 0;
}else{
compare_freq = mark_freq*100;
freq = mark_freq -0.10;
mark_freq=0;
mark_rssi=-100;
}
}
}
}
danielhfaria commented 1 year ago

Sure... the highest rssi is worth your frequency. You can exclude the wrong frequencies with rssi threshold.

check rssi_threshold = -35; you recive nothing? than test -40; you receive to much? than test -30; and so on. if it still does not bring the desired success. Please notify you again.

#include <ELECHOUSE_CC1101_SRC_DRV.h>

float start_freq = 433;    //start scan frequency set.
float stop_freq = 434;    //stop scan frequency set.
int rssi_threshold = -75; // set the threshold to react. the value should be between -20 and -90. recommended -75.

float freq = start_freq;
long compare_freq;
float mark_freq;
int rssi;
int mark_rssi=-100;

void setup() {
Serial.begin(115200);
ELECHOUSE_cc1101.Init();
ELECHOUSE_cc1101.setRxBW(58);
ELECHOUSE_cc1101.SetRx();
Serial.println("Frequency Scanner Ready");
}

void loop() {
ELECHOUSE_cc1101.setMHZ(freq);
rssi = ELECHOUSE_cc1101.getRssi();

if (rssi>rssi_threshold){
if (rssi > mark_rssi){
mark_rssi = rssi;  
mark_freq = freq;
}
}

freq+=0.01;

if (freq>stop_freq){
freq=start_freq;

if (mark_rssi>rssi_threshold){

long fr = mark_freq*100;

if (fr == compare_freq){
Serial.print("Freq: ");
Serial.println(mark_freq);
Serial.print("Rssi: ");
Serial.println(mark_rssi);
mark_rssi=-100;
compare_freq = 0;
mark_freq = 0;
}else{
compare_freq = mark_freq*100;
freq = mark_freq -0.10;
mark_freq=0;
mark_rssi=-100;
}
}
}
}

Hi !! Thank you for your content, I would like you to help me, in this code it does not work at frequencies lower than 315mhz for example, would you know why?? float start_freq = 314; stop_freq = 315;

danielhfaria commented 1 year ago

float SearchFrequency(float mhz,float freqSpace,boolean isDetails); float searchFrequencyForRange(float startMhz,float endMhz,float freqSpace,boolean isDetails); void setup() { delay(3000); Serial.begin(115200); ELECHOUSE_cc1101.Init(); ELECHOUSE_cc1101.setRxBW(58); ELECHOUSE_cc1101.SetRx(); // Serial.println("Frequency Scanner Ready"); Serial.println("Frequency Scanner Ready"); }

float searchFrequency(float mhz,float freqSpace,boolean isDetails){ float start_freq = mhz; float stop_freq = mhz + 1; float freq = mhz; long compare_freq; float mark_freq; int rssi; int mark_rssi=-100; int searchTime = 0; ELECHOUSE_cc1101.Init(); ELECHOUSE_cc1101.setMHZ(mhz); ELECHOUSE_cc1101.setRxBW(58.03); ELECHOUSE_cc1101.SetRx(); delay(20); while (1) { searchTime ++; ELECHOUSE_cc1101.setMHZ(freq); rssi = ELECHOUSE_cc1101.getRssi();

    if (rssi>-75){
        if (rssi > mark_rssi){
            mark_rssi = rssi;  
            mark_freq = freq;
        }
    }

    freq+=freqSpace;
    if (freq>stop_freq){
        // Serial.print("freq>stop_freq");
        freq=start_freq;
        if (mark_rssi>-75){
            long fr = mark_freq*100;
            if (fr == compare_freq){
                Serial.print("freq:");
                Serial.println(freq);
                Serial.print("rssi:");
                Serial.println(rssi);
                Serial.print("mark_freq: ");
                Serial.println(mark_freq);
                Serial.print("searchTime: ");
                Serial.println(searchTime);
                float saveMarkFreq  =  mark_freq;
                mark_rssi=-100;
                compare_freq = 0;
                mark_freq = 0;                   
                if (isDetails)
                {
                    return saveMarkFreq;
                }else
                {   
                    float startSaveMarkFreq = (int)saveMarkFreq-3;
                    float endSaveMarkFreq = (int)saveMarkFreq+3;
                    float  getDetailsRequency =  searchFrequencyForRange(startSaveMarkFreq,endSaveMarkFreq,0.01,true);
                    return getDetailsRequency;
                }                    
            }else{
                    compare_freq = mark_freq*100;
                    freq = mark_freq -0.10;
                    mark_freq=0;
                    mark_rssi=-100;
            }
     }else{
            return -1;
     }
 }
}

} float searchFrequencyForRange(float startMhz,float endMhz,float freqSpace,boolean isDetails ){ while (1) { float frequency = searchFrequency(startMhz,freqSpace,isDetails);

        if (frequency != -1)
        {
            return frequency;
        }
        startMhz ++;
        if (startMhz >endMhz)
        {
            return -1;
        }
    }

} void loop() { float loopFrequency; loopFrequency = searchFrequencyForRange(300,347,0.1,true); Serial.print("loopFrequency:315 "); Serial.println(loopFrequency); loopFrequency = searchFrequencyForRange(388,463,0.1,true); Serial.print("loopFrequency:433 "); Serial.println(loopFrequency); loopFrequency = searchFrequencyForRange(779,927,0.1,true); Serial.print("loopFrequency:868 "); Serial.println(loopFrequency); }

Hello buddy, how are you ? did you manage to get this code right? would you sell it? i really need it!!!