index — ti25-glauchau-code @ master

Meine Lösungen (oder auch nicht) für die Programmieraufgaben in der TI25 an der Staatlichen Studienakademie Glauchau

oop/2026-04-29/temphum/src/main.c (view raw)

 1
 2
 3
 4
 5
 6
 7
 8
 9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 
#include "eval.c"
#include "gpio.c"
#include <stdio.h>

// pull low (at least 1ms)
// wait 20-40us
// sensor pulls low (80us)
// wait 80us
// data transmission:
//
// sensor pulls low (50us)
// data bit:
//  0 (26-28us)
//  1 (70us)
//
//  40 bits:                    (two's complement is used)
//    16 bits - RH (*10)
//    16 bits - T (*10 )
//    8 bits - checksum

int main() {
  if (syn() != 0) {
    printf("ERROR: couldn't send activation signal");
  }
  if (synack() != 0) {
    printf("ERROR: couldn't check for sensor confirmation of activation");
  }

  if (read_data() != 0) {
    printf("ERROR: couldn't read data");
  }
  if (eval_data() != 0) {
    printf("ERROR: couldn't read data");
  }
  if (read_data() != 0) {
    printf("ERROR: couldn't read data");
  }
}