main.cpp

00001 /* -- MBED - AD7190
00002 
00003 Porting by Rododo Science. .... 2019/9/13
00004 
00005 -- */
00006 
00007 
00008 #include "mbed.h"
00009 #include "AD7190.h"
00010 SPI spi(D11, D12, D13); // mosi, miso, sclk
00011 DigitalOut cs(D10);      // Different CS operations
00012 DigitalIn  ad_rdy(D9);  // Use of a _RDY Pin
00013 
00014 
00015 Serial pc(USBTX, USBRX); // tx, rx
00016 
00017 void setup()
00018 {
00019     cs.write(1);
00020     wait(1);
00021     pc.printf("Example Start\n");
00022     cs.write(0);
00023     while(AD7190_Init(800)==0){
00024     pc.printf("Can't allocate AD7190\r\n");
00025     wait(5);
00026     }
00027 
00028     /* Calibrates channel AIN3(+) - AIN4(-).  */ 
00029     AD7190_Calibrate(AD7190_MODE_CAL_INT_ZERO, AD7190_CH_AIN3P_AIN4M);
00030 
00031 }
00032 
00033 void loop()
00034 {
00035 
00036     unsigned long val = AD7190_TemperatureRead();
00037     //pc.printf("Temperature = \t =%lu \r\n", val);
00038 
00039     AD7190_ChannelSelect(AD7190_CH_AIN1P_AIN2M);
00040     /* Selects unipolar operation and ADC's input range to +-Vref/1. plesase refer AD7190_CONF_GAIN(x) */
00041     AD7190_RangeSetup(0, AD7190_CONF_GAIN_64);
00042     
00043     //val = AD7190_SingleConversion();
00044     //pc.printf("ADC = \t%lu \r\n", val);
00045 
00046     val = AD7190_ContinuousReadAvg(8);
00047     //pc.printf("ADC_avg = \t%lu \r\n", val);
00048     
00049     double voltageAn34 =  ( val * 0.00000011921 - 1 ) * 4.096 /64 ; //AIN=(輸出碼/2^23-1)*(Vref/gain)
00050    
00051     
00052     pc.printf("%f \r\n", voltageAn34);
00053     wait(0.01);
00054   
00055 
00056 }
00057 
00058 
00059 //---DON'T CHANGE BELOW----
00060 // MBED compensate
00061 // main() runs in its own thread in the OS
00062 int main() {
00063     //---Enable Debug---
00064     pc.baud(115200);
00065     //--Mark out to disable debug
00066     setup();
00067     while (true) {
00068         loop();
00069     }
00070 }