36     puts(
"***************** Magnetic-based system example *****************");
 
   38         { 100.395, 16.781, 1.084 },     
 
   39         { 100.937, 22.941, 1.072 },     
 
   40         { 106.229, 22.716, 1.064 },     
 
   44     matrix_t true_pos[3] = { 102, 18, 2.308 }; 
 
   47     matrix_t B_vec[4] = { 43.2630, 3.0620, 1.4890, 4.5361 };
 
   49     matrix_t theta_vec[4] = { 31.3710, 12.4870, 11.7280, 0.5352 };
 
   50     uint8_t ref_point_num = 4;
 
   53     for (uint8_t i = 0; i < ref_point_num; i++) {
 
   65     printf(
"true position = ");
 
   69     printf(
"estimated position = ");