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| 1 | /* | |
| 2 | * DEKLARACE GLOBAL PROMENNYCH | |
| 3 | */ | |
| 4 | ||
| 5 | uint64_t ROM_NO = 0; | |
| 6 | - | volatile char temperature_char [15]; |
| 6 | + | |
| 7 | /* | |
| 8 | * FUNKCE | |
| 9 | */ | |
| 10 | ||
| 11 | void first (void) | |
| 12 | {
| |
| 13 | uint8_t id_bit_number = 0; | |
| 14 | uint8_t id_bit = 0; | |
| 15 | uint8_t cmp_id_bit = 0; | |
| 16 | uint8_t LastDiscrepancy = 0; | |
| 17 | uint8_t LastDeviceFlag = 0; | |
| 18 | uint8_t last_zero = 0; | |
| 19 | ||
| 20 | uint8_t search_direction; | |
| 21 | ||
| 22 | - | char str; |
| 22 | + | |
| 23 | {
| |
| 24 | id_bit_number = 1; | |
| 25 | LastDiscrepancy = 0; | |
| 26 | last_zero = 0; | |
| 27 | ||
| 28 | therm_write_byte(THERM_CMD_SEARCHROM); | |
| 29 | ||
| 30 | for(uint8_t i=0; i<64; i++ ) | |
| 31 | {
| |
| 32 | id_bit = therm_read_bit(); | |
| 33 | - | lcdFunc(LCD_FUNC_CLEAR); |
| 33 | + | |
| 34 | if(therm_read_bit()) | |
| 35 | {
| |
| 36 | if(id_bit) return; // Error no device on bus | |
| 37 | else search_direction = 0; // 01 | |
| 38 | ||
| 39 | } | |
| 40 | else | |
| 41 | {
| |
| 42 | - | if(id_bit) return; // Error no device on bus |
| 42 | + | |
| 43 | - | else search_direction = 0; // 01 |
| 43 | + | else // Discrepancy |
| 44 | {
| |
| 45 | if(id_bit_number > LastDiscrepancy) {last_zero = id_bit_number; search_direction = 0;}
| |
| 46 | else if (id_bit_number == LastDiscrepancy) search_direction = 1; | |
| 47 | else search_direction = ROM_NO & ((uint64_t)1 << id_bit_number); | |
| 48 | } | |
| 49 | - | else // Discrepancy |
| 49 | + | |
| 50 | }//konec if(therm_read_bit()) | |
| 51 | ||
| 52 | if(search_direction) ROM_NO |= ((uint64_t)1 << i); | |
| 53 | else ROM_NO &= ~((uint64_t)1 << i); | |
| 54 | ||
| 55 | therm_write_bit(search_direction); | |
| 56 | id_bit_number++; | |
| 57 | ||
| 58 | }//konec foru | |
| 59 | LastDiscrepancy = last_zero; | |
| 60 | } |
