KOMUNIKASI SERIAL PELATIHAN TELEMETRY 2005.

Presentasi berjudul: "KOMUNIKASI SERIAL PELATIHAN TELEMETRY 2005."— Transcript presentasi:

1 KOMUNIKASI SERIAL PELATIHAN TELEMETRY 2005

2 KOMUNIKASI SERIAL Sinkron Data dikirim bersama dengan sinyal clock
I2C (Inter-Integrated Circuit) SPI (Serial Peripheral Interface) Keyboard, mouse Asinkron Data dikirim tanpa sinyal clock UART (RS-232) Modem

3 Serial Sinkron I2C SPI Atmel datasheet, ATmega16 AKM datasheet, AK4551

4 ELECTRICAL SPECIFICATIONS OF RS-232 STANDARD
A "Space" (logic 0) will be between +3 and +25 Volts. A "Mark" (Logic 1) will be between -3 and -25 Volts. The region between +3 and -3 volts is undefined. An open circuit voltage should never exceed 25 volts. (In Reference to GND) A short circuit current should not exceed 500mA. The driver should be able to handle this without damage. (Take note of this one!)

5 SERIAL ASINKRON Diperlukan boudrate yang sama pada sisi pengirim dan penerima Pada pengiriman data harus disertakan start bit dan stop bit sebagai penanda awal dan akhir data Untuk menjaga integritas data, dapat disertakan bit parity.

6 TTL/CMOS Serial Logic Waveform
RS-232 Logic Waveform

7 RS-232 Kecepatan max. 115,200 BPS Panjang media/kabel max 60 meter
Single-ended (terhadap ground) Sinyal mudah mendapat gangguan Voltage swing ±25V Short circuit max 500mA

8 Null-modem Menghubungkan 2 DTE (sumber komunikasi, misal, PC)
DTE = Data Terminal Equipment DCE = Data Communication Equipment (penyedia jalur komunikasi antar DTE, misal, modem)

9 Serial dengan VisualBasic
Disediakan komponen MSComm MSComm1.CommPort = 1 MSComm1.Settings = "9600,N,8,1" MSComm1.InputLen = 0 MSComm1.PortOpen = True MSComm1.Output = "data" Baca = MSComm1.Input MSComm1.PortOpen = False

10 So………. 1. Buat program sederhana untuk mengirim dan menerima data secara serial lewat Com1…..