cc

Dependencies:   mbed

Fork of AS5048 by Saxion Lectoraat MT

Files at this revision

API Documentation at this revision

Comitter:
pirottealex
Date:
Tue Mar 27 13:27:06 2018 +0000
Parent:
4:06b89a41109e
Commit message:
cc;

Changed in this revision

as5048spi.cpp Show annotated file Show diff for this revision Revisions of this file
as5048spi.h Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file
--- a/as5048spi.cpp	Tue Mar 17 14:56:30 2015 +0000
+++ b/as5048spi.cpp	Tue Mar 27 13:27:06 2018 +0000
@@ -1,11 +1,13 @@
 #include "as5048spi.h"
 
-As5048Spi::As5048Spi(PinName mosi, PinName miso, PinName sclk, PinName chipselect, int ndevices) :
+
+As5048Spi::As5048Spi(PinName mosi, PinName miso, PinName sclk, int ndevices) :
     _nDevices(ndevices),
-    _chipSelectN(chipselect),
     _spi(mosi, miso, sclk)
 {
-    _chipSelectN.write(1);
+
+            //chip select à 1
+
     // AS5048 needs 16-bits for is commands
     // Mode = 1: 
     //  clock polarity = 0 --> clock pulse is high
@@ -109,21 +111,25 @@
     if(_nDevices == 1)
     {
         // Give command to start reading the angle
-        _chipSelectN.write(0);
+        //chip select à 0
+
         wait_us(1); // Wait at least 350ns after chip select
         _readBuffer[0] = _spi.write(command);
-        _chipSelectN.write(1);
+        //chip select à 1
+
         wait_us(1); // Wait at least 350ns after chip select       
     } else
     {
         // Enable the sensor on the chain
-        _chipSelectN.write(0);
+        //chip select à 0
+
          wait_us(1); // Wait at least 350ns after chip select
         for(int i = 0; i < _nDevices; ++i)
         {
             _readBuffer[i] = _spi.write(command);
         }
-        _chipSelectN.write(1);
+        //chip select a 1
+        
         wait_us(1); // Wait at least 350ns after chip select
     }
     return _readBuffer;
--- a/as5048spi.h	Tue Mar 17 14:56:30 2015 +0000
+++ b/as5048spi.h	Tue Mar 27 13:27:06 2018 +0000
@@ -25,7 +25,7 @@
 class As5048Spi
 {
 public:
-    As5048Spi(PinName mosi, PinName miso, PinName sclk, PinName chipselect, int nDevices = 1);
+    As5048Spi(PinName mosi, PinName miso, PinName sclk, int nDevices = 1);
     ~As5048Spi();
     
     bool error(int device = -1);
@@ -76,7 +76,6 @@
 
 protected:
     int _nDevices;
-    DigitalOut _chipSelectN;
     SPI _spi;
     
     int* _readBuffer; // Stores the results of the last sequential read
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Mar 27 13:27:06 2018 +0000
@@ -0,0 +1,57 @@
+#include "mbed.h"
+#include <as5048spi.h>
+#define PI 3.1415926
+ 
+// The sensors connection are attached to pins 5-8
+As5048Spi sensor1(p5, p6, p7,1);
+
+
+Serial pc(USBTX, USBRX); // tx, rx
+float vitesse,delta_deg,tour_sec;
+int degrees_av,degrees;
+Timer delta_t;
+
+
+int main() {
+    pc.baud(38400);
+    delta_t.start();
+    while(1) {
+        // 
+        const int* angles = sensor1.read_angle();
+        
+        int angle = angles[0];
+        
+        // The read angle returns the value returned over the SPI bus, including parity bit
+        //pc.printf("Read result: %x\r\n", angle);
+        
+        if( As5048Spi::parity_check(angle) )
+        { 
+            degrees = As5048Spi::degrees(angle)/100;  
+            pc.printf("deg=%d\n\r", degrees);
+            // Convert range from 0 to 2^14-1 to 0 - 360 degrees
+            /*degrees_av=degrees;
+            degrees = As5048Spi::degrees(angle)/100;
+            delta_deg=(degrees-degrees_av);
+            if(delta_deg<0)
+            {
+                delta_deg=delta_deg+360;
+            }
+            tour_sec=((delta_deg)/delta_t.read())/(11*360);
+            vitesse=tour_sec*5.9*PI;
+            delta_t.reset();
+            //vitesse=vitesse/(6.283185*11);
+            
+            pc.printf("vitesse=%0.2f m/sec \n\r",vitesse);
+            
+            //pc.printf("Parity check succesfull.\r\n");
+            
+            //pc.printf("Angle: %i degrees\r\n", degrees );*/
+        }
+        else
+        {
+            //pc.printf("Parity check failed.\r\n");
+        }
+
+    }
+}
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Mar 27 13:27:06 2018 +0000
@@ -0,0 +1,1 @@
+https://mbed.org/users/mbed_official/code/mbed/builds/4eea097334d6
\ No newline at end of file