fix(spo2): Increase minimum peak distance for max 200 bpm

lib/vendor/Maxim/rd117_mbed/RD117_MBED/algorithm/algorithm.c

@@ -168,7 +168,9 @@ void maxim_heart_rate_and_oxygen_saturation(uint32_t *pun_ir_buffer,  int32_t n_
     }
     n_th1= n_th1/ ( BUFFER_SIZE-HAMMING_SIZE);
     // peak location is acutally index for sharpest location of raw signal since we flipped the signal         
-    maxim_find_peaks( an_dx_peak_locs, &n_npks, an_dx, BUFFER_SIZE-HAMMING_SIZE, n_th1, 8, 5 );//peak_height, peak_distance, max_num_peaks 
+    // 100 sps / (200 bpm / 60 spm)
+    int n_min_distance = 100. / (200. / 60.);
+    maxim_find_peaks( an_dx_peak_locs, &n_npks, an_dx, BUFFER_SIZE-HAMMING_SIZE, n_th1, n_min_distance, 5 );//peak_height, peak_distance, max_num_peaks 
 
     n_peak_interval_sum =0;
     if (n_npks>=2){