xbee uart

Reset UART has two methods: UART reset. Write 0 to the UART reset bit (urst) of the power and emulation control register, urpecr. This operation resets the UART state machine without affecting the UART registers. DSP reset. Reduce the reset # pin of the DSP. The entire

I had some problems when I studied Nios's UART and did some sharing.Nios II You can use the round-the-clock method to read information in two ways.Pre-Test:1. Add a UART to the Qsys and add the new UART Rx, TX pair in the Quartus.Question one: Use the round-of-the-way reader programWhen I use the following code to go to the wheel, it is time to wait until the 62n

(charge pump boost inside the chip). Specific use methods can be found in the relevant technical manuals. V. s3c2410 built-in UART controllerThe s3c2410 has 3 independent UART controllers, each of which can operate in interrupt (interrupt) mode or DMA (direct memory access) mode, which means that the UART controller can generate interrupt

++++++++++++++++++++++++++++++++++++++++++This article is reproduced from the Mr_raptor column, thanks to Mr_raptor great God.http://blog.csdn.net/mr_raptor/article/details/6556133++++++++++++++++++++++++++++++++++++++++++The universal asynchronous receiver and transmitter (Universal asynchronous receiver and transmitter) are referred to as UART. Typically, the communication interface is configured by default in the embedded device. This is because ma

SPI, I²C, serial port, I believe if you are engaged in embedded development, will be used to the three communication protocols, serial port words because and baud rate related, so the general CPU or MCU will only be equipped with two or three serial port, and the transmission of data, the SPI and i²c use will be more, A blog was found below. Turn around, 1, the UART is two lines, one sends a receive, can be full duplex communication, the

UART (Universal asynchronous transmitter ER/transmitter)General asynchronous transceiver UART is a chip used to control computers and serial devices. One thing to note is that it provides an interface to the RS-232C data terminal device so that the computer can communicate with the modem or other serial devices that use the RS-232C interface. As part of the interface,

signal line of the RS-422A is ± 2 V, and the recognition voltage of the receiver is ± 0. 2 v. Common Mode: ± 25 V. When transmitting signals at high speed, the impedance matching of the communication line should be taken into account. Generally, the terminal resistor is added at the receiving end to absorb the reflected wave. The resistance network should also be balanced, as shown in Figure 5-9. Figure 5-9 shows the differential output for the RS-422A balanced output

This source is based on the linux3.3.0 version of the kernel in the Dvsdk_omapl138-evm_04_03_00_06_setuplinux package. Implementation of EDMA support UART features mainly modify DMA and 8250 of the source code. First, the DMA channel resource is allocated for OMAPL138 arm and DSP, which has three uart,uart1 occupying edma0cc0 Channel8 (Rx), Channel9 (TX) channel and SLOT8 (RX) and Slot9 (TX); The UART2 occu

It mainly modifies the function type and is compatible with normal and enhanced interruptions. The main functions are as follows: (1) uart_regs.h (2) mcu_uart.h (3) mcu_uart.c (4) sys_main.c //-------------------------------------------------------------------------- /** Uart_regs.h** Created on: 2011-4-4* Author: crazybingo*/ # Ifndef uart_regs_h _# Define uart_regs_h _ # DEFINE _ UART // ---------------------------------------

/**************************************************************************** * I.MX6 Find occupied UART process * NOTE: * Because it is not clear which process occupies the specified UART port, then the front in the UART driver added the display * baud rate set code, this time by the dichotomy annotation init.rc, init.freescale.rc service * To determine if the p

Reference: http://programmingadvent.blogspot.hk/2012/12/raspberry-pi-uart-with-pyserial.htmlRaspberry Pi UART with pyserial os:occidentalis v0.2Hardware:raspberry Pi Revision B with CobblerSetup:serial Loopback (Connect RX and TX pins on GPIO pins)Linux attempts to treat all devices as file system like devices, the UART that's available on the GPIO pins are locat

UART and Usart are single-chip serial communication, the difference between them is as follows: First look at the name: Uart:universal asynchronous receiver and transmitter universal asynchronous receiver/SenderUsart:universal synchronous asynchronous receiver and transmitter universal synchronous/Asynchronous Receiver/Sender As can be seen from the name, Usart on the basis of the UART added synchronizati

To do SCM Development UART,SPI and I²c are our most commonly used hardware interface, I collected the relevant specific materials on these three kinds of interfaces are explained in detail.UartThe UART is a universal serial data bus that is used for asynchronous communication. The bus bidirectional communication, can achieve full duplex transmission and reception. In the embedded design, the

MTK Android Driver: UART, mtkandroidReprinted please indicate the source: http://blog.csdn.net/cbk861110/article/details/425834691. uart port configuration: Set uart log and meta configuration ports to other ports. The empty uart1 is used for communication debugging. Note: Only the uart1 port on the hardware board can be debugged by flying lines. Modification Met

Arm-linux s5pv210 UART Driver (3)----serial core layer, key structure, interface relationshipAlthough a specific UART device driver can be designed with a TTY-driven design, which defines Tty_driver and implements Tty_operations member functions, Linux is already in the file Serial_ The universal TTY drive layer of the UART device, called the core layer of the se

0 IntroductionWith the widespread popularization and application of embedded system, UART (Universal asynchronous Receiver Transmiller) is widely used as a serial data transmission method. The UART allows full-duplex communication on a serial link. Serial Peripherals to Rs 232-c Asynchronous serial interface is typically implemented using a dedicated integrated circuit, the

Last year, noridc developed a chip that integrates Bluetooth 4.0 and can communicate with 24l01. The film encapsulation can be very small, and the power consumption is very low. It is very suitable for wearable devices, so I recently had a set of second-hand ak ii and no becon board. I first played some basic peripherals, And now I started to develop ble. Under the official SDK directory, we can find the project file Nordic \ nrf51822 \ board \ pca10001 \ ble \ experimental \ ble_app_uart, in ad

Turn from: Sina @walkantPart Four serial interface UART and consoleDetailed reference: http://dev.ardupilot.com/wiki/learning-ardupilot-uarts-and-the-console/UART is very important for debugging output, digital transmission, GPS module and so on.1, 5 UARTA total of 5 UART are defined, and their uses are: The uarta– serial terminal, usually a micro USB in

This article mainly introduces the use of UART and PC communication to achieve msp430g2553 single chip ultrasonic Ranging example, need friends can refer to the next It is suitable for msp430g2553 MCU to use the HC-SR04 ultrasonic ranging module and communicates with PC using UART. The code is as follows: #include The last time a long current_time;//was measured /*mypro*/ #define LED_1 BIT0 #define S

Differences: SPI: high-speed synchronous serial port. 3 ~ 4-line interface, independent and synchronous sending and receiving UART: Universal asynchronous serial port. Bidirectional communication based on the standard baud rate is slow I2C: A three-line serial transmission mode. The communication protocol and usage can be found on the Internet. Bidirectional data transmission with three linesSerial peripheral interfaceUART: Universal asynchronous tra