Revision 1:3649456c67ef, committed 2017-06-09

Comitter:

edy05

Date:

Fri Jun 09 08:34:42 2017 +0000

Parent:

0:ab42e541f04d

Commit message:

PPM read class

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PPMIn.cpp	Fri Jun 09 08:34:42 2017 +0000
@@ -0,0 +1,43 @@
+#include "mbed.h"
+#include "PPMIn.h"
+
+PpmIn::PpmIn(PinName pin): ppm(pin), pc_com(USBTX, USBRX)
+{
+    pc_com.printf("Constructor say hi!");
+    current_channel = 0;
+    state = false;
+    timer.start();
+    ppm.rise(this, &PpmIn::rise);
+       
+}
+
+uint16_t* PpmIn::getPpm()
+{
+    uint16_t* p_out[CHANNELS+2];
+    *p_out = &channels[0];
+    return *p_out;            
+    
+}
+            
+void PpmIn::rise()
+{
+    uint16_t time = timer.read_us();
+    
+    //pc_com.printf("Rise say hi!");
+    // we are in synchro zone
+    if(time > 2500)
+    {
+       current_channel = 0;
+       // return values 
+       state = true;
+    }
+    else
+    {
+        channels[current_channel] = timer.read_us();  
+        current_channel += 1;     
+    }
+    
+    timer.reset();
+    
+    //if (current_channel > (CHANNELS + 2 - 1)); //+frame and - 1 indexing of channels list
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PPMIn.h	Fri Jun 09 08:34:42 2017 +0000
@@ -0,0 +1,31 @@
+#ifndef CH_PPM_IN
+#define CH_PPM_IN
+
+
+
+class PpmIn
+{
+    public:
+    
+        static const uint8_t CHANNELS = 8;
+    
+        uint16_t period;
+        uint16_t channels[CHANNELS+2]; 
+        bool state;
+        
+        PpmIn(PinName pin);
+        
+        uint16_t* getPpm();
+        void rise();
+        
+ 
+    protected:
+        InterruptIn ppm;
+        Serial pc_com;
+        Timer timer;
+        uint8_t current_channel;
+        
+        
+};
+
+#endif
\ No newline at end of file

--- a/PPMOut.cpp	Sun Jan 08 20:17:29 2017 +0000
+++ b/PPMOut.cpp	Fri Jun 09 08:34:42 2017 +0000
@@ -52,8 +52,7 @@
 
 void PpmOut::resetChannels() {
     int8_t channel;
-    uint16_t sum_channels = 0;
-
+    
     current_dot = 0;
     memset(dots, 0x00, DOTS);
     for(channel = 0; channel < channel_number; channel++) {

--- a/PPMOut.h	Sun Jan 08 20:17:29 2017 +0000
+++ b/PPMOut.h	Fri Jun 09 08:34:42 2017 +0000
@@ -7,9 +7,9 @@
         static const uint16_t CHANNEL_SYNC = 300; // us
         static const uint16_t CHANNEL_PAD_SYNC = 1000 - CHANNEL_SYNC; // us
         static const uint16_t FRAME_SYNC = 5000; // us
-        static const uint16_t FRAME_LEN = 22300; // us
-        static const uint16_t MAX_CHANNEL_VALUE = 1000; // us
-        static const uint16_t MIN_CHANNEL_VALUE = 0; 
+        static const uint16_t FRAME_LEN = 20000; // us
+        static const uint16_t MAX_CHANNEL_VALUE = 1980; // us
+        static const uint16_t MIN_CHANNEL_VALUE = 1020; 
         static const uint16_t DOTS = MAX_CHANNELS*2+2; // two dots per channel + FRAME_SYNC
 
         /* Will start the PPM output */