Update main.c add sopen to pigs

main.c

@@ -100,8 +100,14 @@ int main(int argc, char * argv[]) {
 
   FILE * gpiod = popen("sudo pigpiod", "r");  // start gpiod
   pclose(gpiod);
-  gpiod = popen("pigs m 13 0", "r");		// set PWM audio utput to GPIO 13 (pin 33)
-  pclose(gpiod);	
+//  gpiod = popen("pigs m 13 0", "r");		// set PWM audio utput to GPIO 13 (pin 33)
+//  pclose(gpiod);
+
+  file1 = sopen("pigs m 13 0");  // python sensor polling function	  
+  fgets(cmdbuffer, 1000, file1);
+  fprintf(stderr, "pigs result: %s\n", cmdbuffer);
+///  }
+	
 //  gpiod = popen("pigs hc 6 12880000", "r");		// set clock to 12.88 MHz on GPIO 6 (pin 31)  // commented out as it seemed to crash Pi Zero
 //  pclose(gpiod);