Revision 5:6b4cee1dd258, committed 2018-03-27

Comitter:

pirottealex

Date:

Tue Mar 27 13:27:06 2018 +0000

Parent:

4:06b89a41109e

Commit message:

cc;

Changed in this revision

--- 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