#22 buenas tardes mario me gustan mucho tus articulos pero soy autodidacta y aprendo rapido pero algunas cosas me cuestan, tengo preguntas como se puede programar el modulo hc 06 con una antena bluetooht de las de puerto usb en mi caso tengo varias de la marca trust el chip interno creo que es de broadcom. Buenas tardes, he estado jugando con un hc-06 con un pic16f887 programado en mikrobasic y un samsung galaxy S pero no logro encender el led 🙁 y esto lo necesito para un proyecto de la universidadno se que tengo malo o si es por el picaqui les pongo el codigo program android_pic dim uart_rd as longword main: UART1_Init(9600) Delay_ms(100) while (TRUE) if (UART1_Data_Ready() 0) then uart_rd = UART1_Read() if (uart_rd = 'a') then portb=%00000000 end if if (uart_rd = 'e') then portb=%10000000 end if end if wend end.

Les agradeceria que me ayudaran pues no logro encender el pic 🙁 muchas gracias de ante mano.

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Introduction Figure 1: PIC18F26K20 Connected to PC via MAX232 A serial port interface can be used for serial communication of data (send and receive) where data is sent or received one bit at a time between a personal computer (PC) and various devices supporting this type of protocol like PIC microcontrollers, GPS, GSM modem etc. While other interfaces like Ethernet, FireWire, and USB all send data as a serial stream, the term “serial port” usually identifies hardware more or less compliant to the RS-232 standard, intended to interface with a modem or with a similar communication device. RS232 Serial communication is still widely used in industrial application and with many electronic devices like modems but it is being replaced by the USB in portable devices. Watch the Video Tutorial The Universal Asynchronous Receiver/Transmitter (UART) controller is the key component of the serial communications between a device and a PC or between devices. UART is also a common integrated feature in most microcontrollers today which is useful for communicating serial data (text, numbers, etc.) to your PC. Most all microcontrollers have an internal UART at a specific pins of the microcontrollers but this feature can also be implemented at any pin with a software in most of the compilers.

The device changes incoming parallel information (within the microcontroller/PC) to serial data which can be sent on a communication line. At the destination, a second UART re-assembles the bits into complete bytes. Serial transmission of digital information (bits) through a single wire or other medium is much more cost effective than parallel transmission which requires multiple wires. Модем zte mf180 firmware update download.

RS 232 is a standard protocol used for serial communication, it is used for connecting computer and its peripheral devices to allow serial data exchange between them. As EIA defines, the RS 232 is used for connecting Data Transmission Equipment (DTE) and Data Communication Equipment (DCE).

Communication can be “full duplex” (both send and receive at the same time) or “half duplex” (devices take turns transmitting and receiving). The UART Protocol Asynchronous transmission allows data to be transmitted without the sender having to send a clock signal to the receiver. In this case, the sender and receiver must agree on timing parameters (Baud Rate) prior transmission and special bits are added to each word to synchronize the sending and receiving units. In asynchronous transmission, the sender sends a Start bit, 5 to 8 data bits (Least Significant Bit first), an optional Parity bit, and then 1, 1.5 or 2 Stop bits. If the sender and receiver are not configured the same (these timing parameters), communication will not be done effectively. The Start bit informs the receiver that a word of data is about to be sent, this is to tell the receiver to synchronise its clock with the transmitter’s clock.