Using standard libraries with SPC560D

[Patriks]

Posted on September 16, 2014 at 16:03

Hello,

I would like to do some mathematical calulations like square root, sin, cos,... with the SPC560D. Does ST provide any libraries for that purpose which I can include in my SPC5 project? Best regards, Patrik

[Erwan YVIN · Accepted solution]

Posted on September 19, 2014 at 15:30Hello Patrik ,In your SPC5 Project, you can use some classic mathematical libraries on OS-LESS Test application by adding this piece of code :/* sin example */#include <errno.h>#include <stdio.h>      /* printf */#include <math.h>       /* sin */#include <float.h>#define PI 3.14159265/* For sprintf porting */void *sbrk(size_t incr) {  extern uint8_t __heap_base__;  extern uint8_t __heap_end__;  static uint8_t *p = &__heap_base__;  static uint8_t *newp;  newp = p + incr;  if (newp > &__heap_end__) {    errno = ENOMEM;    return (void *)-1;  }  return p = newp;}/* * Application entry point. */int main(void) {    char string[60];    double param, result;  .......................  param = 30.0;  result = sin (param*PI/180)*1000;    sprintf (string, ''The sine of %d degrees is %d.\n'', (int)param, (int)result );  it works well 😉

                    Best regards

                                     Erwan