xbee uart

From: http://hi.baidu.com/liang888%BA%C3/blog/item/38ad3351defc6711377abec2.html Start position: sends a logic "0" signal, indicating the start of the transmission character. Data bit: After the start bit. The number of data bits can be 4, 5, 6, 7,

  1. Preparations Jlink is connected to the Development Board. The driver has been installed. Keil MDK 4.0 installation is complete. 2. Create a project Select the device Samsung/s3c2440a for the project There is a

Algorithm transplant class encryption chip is Linko core of the company's patented products, the main function is embedded inside the chip Linko Core Security company's Lkcos intelligent operating system, the user can be part of the MCU program key

1, configuration steps in Cubemx (1) RCC Open HSE Peripheral clock Configuration, HCLK = 72MHZ (2) USART1 Asynchronous transceiver Complete the above configuration to generate the code for the Keil project. 2, Test procedures: In the Serial

Design the simplest RS232 communication logic, the FPGA implementation will receive the data will be sent out, a total of two data transmission pins, a receive. Divide this communication module into three parts: 1. Baud Rate Control Module 2, send

This article is reproduced in: workshop! I. Hardware (using Quartus II 9.0) 1. Create a project, enable the system-wide image search system builder, and add a CPU Select standard Nias. 2. Add PLL Click launch Altera's altpll

==== This article is the original site. You are welcome to reprint it! Reprinted please indicate the source: http://blog.csdn.net/yyplc==== After the registration is complete, how is the device connected to the driver? It turns out that the device

Uart1 is not supported in the default kernel. You need to initialize it during kernel initialization. Modify the file ARCH/ARM/Mach-DaVinci/board-dm355-evm.c and add the following red section to the function board-init function: Board_setup_psc

We usually configure this sentence in config: "config_cmdline =" console = tty0 console = ttymt3, 921600n1 root =/dev/Ram "", then, you can modify the value assignment of the console to change the output position. How can this problem be implemented

Using DMA transfers can be used to continuously get or send a piece of information without taking up interruptions or delays, which is useful when communication is frequent or large pieces of information are transmitted. The above table shows that

** Description:*------------* This file is intends for UART driver.** Author:*-------*-------** ===================================================== ============================================* History* Below this line, this part is controlled by PVCs VM. Do not modify !!*------------------------------------------------------------------------------* Removed!* Removed!* Removed!** Removed!* Removed!* Removed!** Removed!* Removed!* Removed!** Removed

Source: Huaqing vision embedded School, source: http://www.embedu.org/Column/Column698.htm Author: Instructor Cheng,Hua Qing vision embedded college lecturer. I. Data Communication Methods The basic data communication methods can be divided into parallel communication and serial communication. (1) Parallel Communication: multiple data lines are used to send data simultaneously. It features high transmission speed and is suitable for short-distance communication. (2) Serial Communication: one pi

1.uart port configuration:The UART log and meta configuration ports are configured as other ports, and the vacated uart1 are specifically used for this functional communication debugging. Note: Only the UART1 port on the hardware board is able to fly the line out to debug. Modification method: reference: [FAQ07420] How to set the UART port to spit

Two independent asynchronous serial I/O ports are provided for the UART unit of the high-efficiency FIFO serial port based on the implementation of b0x (clock frequency: 60 MHz) on the ARM7, each communication port can work in the interrupt or DMA mode. That is, UART can generate an internal interrupt request or DMA request to transmit data between the CPU and the serial I/O port. It supports a transmission

1. UART Communication Exception 1.1. PhenomenonFriday debugging CSR8670 encountered a serious problem: in the Xide environment debugging, CSR8670 received the data from the MCU will respond normally. Once running offline, the communication between CSR8670 and MCU is abnormal, which is as follows: The MCU sends an X-byte command to the Csr8670,uart task to receive a command that is less than X bytes

First, initialize 1. Initialize the serial port, clock Mx_usart1_uart_init (); Serial clock initialized to internal clock Periphclkinit.usart1clockselection = RCC_USART1CLKSOURCE_HSI; Periphclkinit.usart2clockselection = RCC_USART2CLKSOURCE_HSI; 2. Initializing DMA, Port multiplexing Hal_uart_mspinit () Open Idle Frame Interrupt __hal_uart_enable_it (Uarthandle, Uart_it_idle); Second, start receiving transmission 1. Start Data reception /*Start DMA Receive transfer*/voidMx_uart_debugrxstart (uar

Although 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 serial port, is implemented in core.c, so that the main task of the UART driver becomes a set o

universal Asynchronous Receiver and transmitter (UART) provide three independent asynchronous serial I/O (SiO2) ports, each of which can be operated in either the interrupt mode or the DMA mode. In other words, UART can generate an interrupt or DMA request for data transmission between the CPU and UART. UART supports

Input/output Characters of serial port settingss5pv210 UART Related InstructionsA universal asynchronous transceiver called the UART, Universal asynchronous RECEIVER and transmitter, is used to transmit serial data. When the data is sent, the CPU writes the parallel data Uart,uart in a certain format on a wire; When th

interrupt.The timer does not have a separate timing function, so if it is timed, it can use the Pwm_out mode and timer interrupt toOn the TIMER0 pin of the chip, there will be a PWM waveform output.*ptimer0_config =0x0019;//Configure timer for PWM mode*ptimer0_period =0x00800000;//Set period is 0x00800000 system clock*ptimer0_width =0x00400000;//Set pulse width to 0x00400000 system clock*ptimer_enable =0x0001;//Enable TIMER0*PSIC_IAR0 =0xFFFFFFFF; *psic_iar1 =0xFFFFFFFF; *psic_iar2 =0xfffffff4;