read function is slow about hx711

[LwServices]

I have study this code. Now I quite understand your code. The issue is that you try to get all bits in one cyclus of the main function loop. This cause trouble and the CPU Idle a lot and this slow my other code down.
Now i have started a new approuch one bit each cycle.

const byte hx711_data_pin = A7;
const byte hx711_clock_pin =A6;
bool bOut,bOut1,bOut2;
bool bIn,newData,readingHX;
byte data1,data2,data3;
unsigned long currentTime;
unsigned long lastUpdate1,lastUpdate2;
int i,d,j;
long int dd;
void setup() {
// put your setup code here, to run once:

pinMode(hx711_clock_pin,OUTPUT);
pinMode(hx711_data_pin,INPUT);
// digitalWrite(hx711_data_pin, HIGH);
Serial.begin(9600);
readingHX=1;
}

void loop() {

if(readingHX){
if(bOut2){
bOut2=0;
digitalWrite(hx711_clock_pin,0);
}else{
bOut2=1;
digitalWrite(hx711_clock_pin,1);
bIn=digitalRead(hx711_data_pin);
j=23-i;
if(i<24){
dd |= bIn<<(j);
}
i++;
}
}else{
i=0;
}
if(i==24){
readingHX=0;
dd ^= 0x80;
Serial.println(dd,BIN);
dd=0;
digitalWrite(hx711_clock_pin,0);
}
}

[CFTechno]

Would it not been easier to use
if (scale.is_ready()) Lvalue = scale.read() ;

[bogde]

@leszek77 do you still need any help with this?

[LwServices]

yes, but i try to figure out by my self.

[kasperv79]

Hi.
@leszek77, did you finalise your version?

[LwServices]

i didn\t continue to work on it

[theharshalpatil]

@bogde I'm facing the same issue. Is there a way to increase the speed at which the data is fetched?

[Srijal97]

For anyone reading this in the future, that while (!is_ready()); in read() caused the code to block and would waste a lot of processor cycles so I modified it by removing the while loop, and instead repeatedly checking in the main loop if chip is_ready(). I created separate functions read_direct() [Without the blocking while loop], and get_units_direct() [Which calls read_direct() directly] and added this to my main loop:

if (scale.is_ready()){
    tension = scale.get_units_direct();
}

[MugetsuX]

@Srijal97 Hey there, i'm facing the same problem with the while (!is_ready()); function. I'm not a programmer and can't figure out how to change the while loop to an if function. Could you give some more detail on how you have set up your code? I'm using the multi-library to connect 4 loadcells:
https://github.com/compugician/HX711-multi/blob/master/HX711-multi.cpp

Thanks a lot :-)

[Srijal97]

@MugetsuX Hey, if you could just drop me an email on the ID from my GitHub profile, I'll send you the modified library and example code showing what I mean!

[jeroentjeee]

@Srijal97 Hi Sir, I tried your way of fixing this problem, however i'm not quite getting it done. could you also send me the modified libraby?

thanks a lot

[andrelouk]

@Srijal97 could you send me your modifications to the library. thank you very much.. im doing a rapid acquisition from the load cell, and i need to get the value as fast as possible. Thank you very much..

[Srijal97]

@Srijal97 could you send me your modifications to the library. thank you very much.. im doing a rapid acquisition from the load cell, and i need to get the value as fast as possible. Thank you very much..

Please find the files here: Srijal97/HX711

[andrelouk]

Thank you Very Much... Really Appreciate it

[eleksis]

@Srijal97 thanks for sharing the code. If i can suggest...you should make fork of this project and publish your code on your github profile, that's what github is for...

[Srijal97]

@Srijal97 thanks for sharing the code. If i can suggest...you should make fork of this project and publish your code on your github profile, that's what github is for...

I have done that now, thank you!