index — ti25-glauchau-code @ 9310e74950cb91ac2b8c3ca6a6fe6c4254689fbc

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)

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#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");
  }
}