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173 Lampiran 1. Spesifikasi mikrokontroler AT89S51 (Atmel Datasheet)
Deskripsi pin
Nama Pin Keterangan
VCC Tegangan supply +5V GND Ground
Port 0 Port 0 merupakan port paralel 8 bit dua arah (bi-directional) yang dapat digunakan untuk berbagai keperluan. Port 0 juga memultipleks alamat dan data jika digunakan untuk mengakses memori eksternal.
Port 1 Port 1 merupakan port paralel 8 bit dua arah dengan internal pull-up.
Port 1 juga digunakan dalam proses pemrograman P1.5 MOSI
P1.6 MISO P1.7 SCK
Port 2 Port 2 merupakan port paralel 8 bit dua arah dengan internal pull-up.
Port 2 akan mengirim byte alamat jika digunakaan untuk mengakses memori eksternal.
Port 3 Port 3 merupakan port paralel 8 bit dua arah dengan internal pull-up.
Port 3 juga bida difungsikan untuk keperluan khusus yaitu : P3.0 RXD (Receive Data) P3.1 TXD (Transmit Data) P3.2 INT0 (Interrupt 0) P3.3 INT1 (Interrupt 1) P3.4 T0 (Timer 0) P3.5 T1 (Timer 1) P3.6 WR (Write Strobe) P3.7 RD (Read Strobe)
RST Pulsa dari low ke high akan mereset mikrokontroler ALE/PROG Address Latch Enable, digunakan untuk menahan alamat
memori eksternal selama pelaksanaan instruksi PSEN Program Store Enable, merupakan sinyal kendali yang
memperbolehkan program memori eksternal masuk ke dalam bus selama proses pengambilan instruksi
EA/VPP Jika EA=1 maka mikrokontroler akan melaksanakan instruksi dari ROM internal
Jika EA=0 maka mikrokonttoler akan melaksanakan instruksi dari ROM eksternal
XTAL1 Intput ke rangkaian osilator internal XTAL 2 Output dari rangkaian osilator internal
174 Lampiran 1. Spesifikasi mikrokontroler AT89S51 (lanjutan)
Special function register
Simbol Nama Alamat Nilai Awal
ACC Akumulator E0H 00000000
B B Register F0H 00000000
PSW Program Status Word D0H 00000000
SP Stack Pointer 81H 00000111
DPTR0
Data Pointer 0 16 bit DP0L Byte Rendah DP0H Byte Tinggi 82H 83H 00000000 00000000 DPTR1
Data Pointer 1 16 bit DP1L Byte Rendah DP1H Byte Tinggi 84H 85H 00000000 00000000 P0 Port 0 80H 11111111 P1 Port 1 90H 11111111 P2 Port 2 A0H 11111111 P3 Port 3 B0H 11111111
IP Interrupt Priority Control B8H xx000000 IE Interrupt Enable Control A8H 0x000000 TMOD Timer/Counter Mode Control 89H 00000000 TCON Timer/Counter Control 88H 00000000 TH0 Timer/Counter 0 High Byte 8CH 00000000 TL0 Timer/Counter 0 Low Byte 8AH 00000000 TH1 Timer/Counter 1 High Byte 8DH 00000000 TL1 Timer/Counter 1 Low Byte 8BH 00000000
SCON Serial Control 98H 00000000
SBUF Serial Data Buffer 99H xxxxxxxx
PCON Power Control 87H 0xxx0000
WDTRST Watchdog Timer Reset A6H xxxxxxxx
175 Lampiran 1. Spesifikasi mikrokontroler AT89S51 (lanjutan)
Timer Mode
TxM1 TxM0 Mode Timer Deskripsi
0 0 0 13-bit Timer
0 1 1 16-bit Timer
1 0 2 8-bit auto reload
1 1 3 Split timer
Register TCON
Bit Nama Fungsi Timer
7 TF1 Timer 1 Overflow. Bit ini diatur oleh
mikrokontroler 1
6 TR1 Timer 1 Run. Timer akan aktif jika bit ini bernilai 1 1 5 TF0 Timer 0 Overflow. Bit ini diatur oleh
mikrokontroler 0
4 TR0 Timer 1 Run. Timer akan aktif jika bit ini bernilai 1 0 Register TMOD
Bit Nama Fungsi Timer
7 GATE1 Jika bernilai 1, timer hanya akan mulai ketika INT1 pada kondisi high. Jika bernilai 0, timer akan mulai tanpa pengaruh kondisi INT1.
1 6 C/T1 Timer akan mencacah kejadian melalui T1 ketika
bit ini bernilai 1 dan akan mencaca setiap siklus mesin jika bit bernilai 0.
1 5 T1M1 Penentu mode timer yang akan digunakan 1 4 T1M0 Penentu mode timer yang akan digunakan 1 3 GATE0 Jika bernilai 1, timer hanya akan mulai ketika
INT1 pada kondisi high. Jika bernilai 0, timer akan mulai tanpa pengaruh kondisi INT1.
0 2 C/T0 Timer akan mencacah kejadian melalui T1 ketika
bit ini bernilai 1 dan akan mencaca setiap siklus mesin jika bit bernilai 0.
0 1 T0M1 Penentu mode timer yang akan digunakan 0 0 T0M0 Penentu mode timer yang akan digunakan 0
176 Lampiran 1. Spesifikasi mikrokontroler AT89S51 (lanjutan)
Mode pilihan komunikasi data serial
SM1 SM0 Mode Deskripsi
0 0 0 Shift register, baud = f/12
0 1 1 8-bit UART, baud = variabel
1 0 2 9-bit UART, baud = f/32 atau f/64
1 1 3 9-bit UART, baud = variabel
Register SCON
Bit Simbol Fungsi
7 SM0 Serial port mode bit 0 6 SM1 Serial port mode bit 1
5 SM2 Pengaktif komunikasi multiprosesor
4 REN Receive Enable bit. Beri nilai 1 untuk mengaktifkan penerimaan data serial
3 TB8 Transmitted bit 8. Pengaturan dilakukan oleh program pada mode 2 dan 3
2 RB8 Received bit 8. Bit ke-8 dari data yang diterima pada mode 2 dan 3. Berupa stopbit pada mode 1 dan tidak digunakan pada mode 0
1 TI Transmit Interrupt flag. Harus dikontrol oleh program 0 RI Receive Interrupt flag. Harus dikontrol oleh program
Register PCON
Bit Simbol Fungsi
7 SMOD Serial baudrate modify bit. Bernilai 1, program akan
menggandakan timer 1 sebagai baudrate pada mode 1,2 dan 3. Bernilai 0, untuk menggunakan baudrate timer 1.
6-4 - Tidak digunakan 3 GF1 General purpose user flag bit 1 2 GF0 General purpose user flag bit 0
1 PD Power down bit. Beri nilai 1, untuk masuk konfigurasi power down
0 IDL Idle mode bit. Beri nilai 1, jika ingin masuk konfigurasi mode idle
177 Lampiran 1. Spesifikasi mikrokontroler AT89S51 (lanjutan)
Register IE
Bit Simbol Fungsi
7 EA Enable Interrupts bit. Beri nilai 1, untuk mengaktifkan interrupt sesuai enable bit interrupt terkait.
6 - Tidak digunakan 5 ET2 Penggunaan pada 8052
4 ES Enable serial port interrupt. Beri nilai 1 untuk mengaktifkan interrupt
3 ET1 Enable timer1 overflow interrupt. Beri nilai 1 untuk mengaktifkan interrupt
2 EX1 Enable external1 interrupt. Beri nilai 1 untuk mengaktifkan interrupt (INT1)
1 ET0 Enable timer0 overflow interrupt. Beri nilai 1 untuk mengaktifkan interrupt
0 EX0 Enable external0 interrupt. Beri nilai 1 untuk mengaktifkan interrupt (INT0)
Register IP
Bit Simbol Fungsi
7-6 - Tidak digunakan 5 PT2 Penggunaan pada 8052
4 PS Prioritas interrupt untuk serial port 3 PT1 Prioritas interrupt untuk timer1 overflow 2 PX1 Prioritas interrupt untuk external1 1 PT0 Prioritas interrupt untuk timer0 overflow 0 PX0 Prioritas interrupt untuk external0
178 Lampiran 2. Citra sebaran gulma pada lahan terbuka.
25 26 24 23 22 21 15 16 14 13 12 11 5 6 4 3 2 1 10 9 8 7 20 19 18 17
179 Lampiran 3. Data pengolahan citra sebaran gulma
Citra ke- Baris ke-
Kolom Kanan Kolom Kiri waktu
Rata-rata R Rata-rata G Rata-rata B Rata-rata R Rata-rata G Rata-rata B t (mdet)
1 1 99.19 125.12 69.94 74.95 86.77 49.96 196.01 2 105.65 126.25 71.84 53.29 60.59 34.93 2 3 90.32 117.54 79.97 74.78 89.85 63.53 197.01 4 93.74 114.32 79.06 84.21 99.46 70.54 3 5 105.71 135.97 78.43 64.32 78.94 45.96 196.01 6 77.32 97.38 56.88 57.15 70.56 41.04 4 7 119.93 152.89 89.89 111.35 139.67 82.79 194.01 8 117.70 147.47 87.43 103.59 129.79 76.96 5 9 75.35 91.62 65.37 29.13 29.51 21.60 198.01 10 56.58 60.98 44.70 14.63 15.65 11.17 6 11 90.29 111.06 70.53 44.38 49.25 32.39 199.01 12 47.81 53.14 35.20 57.88 66.45 43.44 7 13 76.12 90.36 61.70 50.35 50.69 36.19 196.01 14 107.36 110.52 78.89 98.36 98.92 71.21 8 15 22.87 27.40 20.40 84.22 74.15 61.39 198.01 16 18.99 17.71 14.35 82.16 73.59 60.37 9 17 104.35 130.84 81.34 87.47 104.07 65.44 197.01 18 77.37 93.59 59.44 72.64 85.72 53.75 10 19 44.97 53.26 40.24 89.19 82.43 67.51 196.01 20 66.54 61.52 50.28 114.43 106.56 86.88 11 21 79.81 102.96 66.68 60.78 66.68 44.82 196.01 22 49.67 59.82 39.84 31.69 33.34 22.81 12 23 67.30 85.83 58.70 17.03 16.90 12.27 195.01 24 78.43 82.96 59.69 20.78 20.03 14.73
180 Lampiran 3. Data pengolahan citra sebaran gulma (lanjutan)
Citra ke- Baris ke-
Kolom Kanan Kolom Kiri waktu
Rata-rata R Rata-rata G Rata-rata B Rata-rata R Rata-rata G Rata-rata B t (mdet)
13 25 56.37 65.05 50.30 130.41 124.19 100.73 195.01 26 33.31 33.24 26.34 123.76 119.02 96.21 14 27 61.66 76.37 53.04 30.50 28.20 21.49 194.01 28 40.85 42.65 30.96 19.44 19.96 14.61 15 29 11.16 11.75 10.15 104.06 84.74 70.16 199.01 30 11.87 9.82 8.07 48.14 38.74 31.81 16 31 11.38 12.14 9.46 60.19 46.85 39.39 194.01 32 21.48 17.00 14.28 74.90 58.99 49.65 17 33 60.87 83.12 60.48 69.90 75.92 55.65 194.01 34 19.21 17.49 13.46 68.71 67.99 52.36 18 35 27.06 32.17 24.54 52.49 43.63 36.09 195.01 36 29.66 26.24 21.33 31.43 26.11 21.60 19 37 19.14 23.73 18.30 29.16 25.04 19.13 196.01 38 48.79 41.26 31.88 24.75 20.39 15.78 20 39 45.52 53.57 36.01 61.03 55.03 40.68 193.01 40 52.46 51.35 36.75 90.52 79.10 59.63 21 41 21.09 25.14 18.26 45.17 37.11 29.86 195.01 42 8.66 7.42 5.89 57.17 50.43 39.33 22 43 43.14 61.02 40.66 26.52 24.09 18.31 195.01 44 38.53 40.71 29.11 21.70 21.72 16.16 23 45 50.99 60.40 42.72 100.94 94.06 72.72 196.01 46 81.12 77.78 58.89 96.63 89.03 69.51
181 Lampiran 3. Data pengolahan citra sebaran gulma (lanjutan)
Citra ke- Baris ke-
Kolom Kanan Kolom Kiri waktu
Rata-rata R Rata-rata G Rata-rata B Rata-rata R Rata-rata G Rata-rata B t (mdet)
24 47 72.69 99.03 66.46 30.82 37.22 25.53 199.01 48 45.68 53.14 37.58 23.29 26.76 18.92 25 49 102.83 125.27 84.50 118.96 134.82 93.58 198.01 50 98.93 110.78 76.94 109.67 124.56 86.31 26 51 35.64 42.27 30.44 43.28 39.53 29.96 197.01 52 18.37 17.43 13.41 45.55 41.63 31.82
182 Lampiran 4. Data penentuan nilai segmentasi
Kolom ke- Rata-rata R Rata-rata G Rata-rata B
0 152.44 124.28 97.76 1 154.03 125.66 99.14 2 153.79 125.05 98.44 3 153.99 124.92 98.28 4 155.11 125.66 99.22 5 156.70 126.96 101.18 6 156.14 126.30 101.14 7 157.86 128.00 103.45 8 159.86 129.73 104.55 9 158.61 128.46 103.48 10 157.99 128.39 103.58 11 158.08 129.07 104.73 12 159.55 130.99 106.95 13 161.70 132.75 108.90 14 160.36 130.60 106.08 15 160.47 129.87 105.21 16 164.43 134.24 108.06 17 163.05 132.84 106.80 18 160.08 129.75 103.87 19 161.88 131.17 105.67 20 161.97 131.17 106.02 21 162.39 131.14 106.08 22 165.18 133.86 109.00 23 163.31 132.08 107.13 24 163.74 132.87 107.56 25 164.70 133.93 108.35 26 164.60 133.86 107.96 27 163.31 132.73 106.47 28 166.23 135.50 110.18 29 167.95 137.32 112.15 30 164.78 134.01 108.22 31 166.09 135.24 109.75 32 168.73 138.54 113.8 33 168.55 138.24 113.17 34 167.75 137.35 112.19 35 169.76 139.13 114.31 36 169.95 139.18 114.12 37 171.61 140.59 115.63 38 172.01 140.83 116.05 39 170.95 139.85 114.74