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main.cpp
00001 #include "mbed.h" 00002 #include "Hx711.h" 00003 00004 #define n_muestras 10 00005 00006 DigitalOut led(LED1); 00007 00008 Hx711 LoadCeld(A1, A0, 1, 1.0); 00009 00010 Serial rs232(USBTX, USBRX); // USB Serial Terminal 00011 00012 00013 00014 00015 00016 00017 float escala = 0.0; 00018 float offset; 00019 float calibration_factor = 1000; //Ajustar este valor para calibrar el peso exacto 00020 int averageSamples = 300; 00021 00022 int main(void) 00023 { 00024 00025 00026 for(int i = 0; i < n_muestras; i++ ) 00027 { 00028 while(!LoadCeld.is_ready()); 00029 00030 offset = ( offset + LoadCeld.readRaw()); 00031 00032 } 00033 00034 offset = (offset / n_muestras); 00035 LoadCeld.set_offset(offset); 00036 LoadCeld.set_scale(1.0); 00037 rs232.printf("Offset: %.2f \n", offset); 00038 rs232.printf("Offset: %.2f \n", LoadCeld.get_offset()); 00039 offset = 0.0; 00040 00041 //scale.tare(); //Reset the scale to 0 00042 00043 //long zero_factor = scale.averageValue(averageSamples); // Saca promedio de varias lecturas para estabilizar la medida 00044 00045 while (true) { 00046 00047 00048 for(int i = 0; i < n_muestras; i++ ) 00049 { 00050 while(!LoadCeld.is_ready()); 00051 00052 escala = ( escala + LoadCeld.read()); 00053 00054 } 00055 escala = (escala / n_muestras); 00056 rs232.printf("Peso: %.2f \n", escala); 00057 escala = 0.0; 00058 //scale.setScale(calibration_factor); 00059 //float weight = scale.getGram(); 00060 //rs232.printf("Peso: %.2f\n", weight); 00061 //lcd.locate(0,0); 00062 //lcd.printf("Peso: %.2f Grms", weight); 00063 led = !led; // toggle led 00064 wait(0.2f); 00065 } 00066 }
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