uart terminal

Http://blog.chinaaet.com/detail/25424.html Continue to learn the serial communication of ADSP-BF533 today, UART (Universal Asynchronous Receiver ER/transmitter (UART) Port) interface, is a full duplex universal serial interface, composed of RX and TX two lines, the extended RS232 chip can communicate directly with computer serial ports, which is usually used as the command and data communication interface

Did not study carefully, the use of the next, summed up the point, also searched a bit of information. --------------------------------------------------------------------------------------------------------------- ------------- Simple to speak: (UART and COM) Embedded inside said serial port, generally refers to the UART port, but we often do not know it and COM port differences, as well as RS232, TTL and

1 Take the program, note that the incoming is Norflash, at this time the button should be in the Norflash.2 when it comes to success, start running the program, you should push the button back to Nandflash, because the program is launched in Nandflash, he put norflash content into the Nandflash run, the CPU curing program to do.3 because the serial port is used at a speed of 9600, so your vim. KERMRC should also be changed to 9600.4 Lsusb Detect U-turn string device Lsmod detection driver exists

, and 15 times is output. TC is the number of output records. Each output time, TC is reduced by 1, and the value is 0, one-service mode for stopping DMA and waiting for other DMA requests. If an interrupt is set, the MDA is interrupted. Therefore, TC is the cycle.Code Area Main. c # Define global_clk 1 # include "def. H "# include" option. H "# include" 2440addr. H "# include" 2440lib. H "// function declaration # include" 2440slib. H "# include" MMU. H "# include" profile. H "// extern void d

Uartn_br: UART baud rate registerUartn_br []: The content is regularly loaded by the timer's register.Uartn_cr.run = 0 can be loaded until uartn_cr.run = 1 write is invalidUartn_txbufr: UART Transfer RegisterUartn_txbufr [8]: the eighth or even parity bits for data transmission, wake-up bits, or undefined bits are determined by the corresponding operation mode.1. In 001 mode, this bit is written to 0.2. If

The first difference is of course the name:SPI (serial peripheral interface: serial peripheral interface );I2C (Inter IC Bus)UART (Universal Asynchronous Receiver Transmitter: Universal asynchronous transceiver)Second, the difference lies in the electrical signal line:The SPI bus consists of three signal lines: sclk, SDO, and SDI ). The SPI bus allows multiple SPI devices to connect to each other. The SPI device that provides the SPI serial clock is t

Step 1: Initialize the baud rate, line control register-query line Status Register-read data-Handle error status -Send data Step 1 UART initialization procedure 1. Set u0lcr bit bit7 to 1 so that u0dlm u0dll registers can be written. 2. Set the baud rate register value to fpclk/(16 * baud) High 8-bit write u0dlm low 8-bit write u0dll 3. Set u0lcr to 0. Disable u0dlm u0dll to write the remaining u0rbr bits. 4. Set u0lcr,

/**************************************************************************** * 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

First blog, the first record of the one weeks of learning content.The first of the UART learning path is the introduction of the basic concept of the UART. Follow-up will use stm32f407 serial port and PC communication. Finally, Verilog HDL is used to write the serial transmitting module and receiving module, complete the simulation and complete the communication on the Zedboard board.First clarify what is

Why does UART need FIFO? Modern CPUs run faster and faster. UART usually has a baud rate of less than 10 M. In the absence of FIFO, CPU time is consumed for each data filling to or from UART, this is a great waste. Therefore, the UART is configured with FIFO as the buffer for data sending and receiving on the hardware.

Cortex-M3 learning and debugging of stm32f10x UART In the process of learning the stm32f10x Development Board, the first learning routine is the UART Printing program. Due to the previous experience of single-chip microcomputer, UART programming is not unfamiliar, however, in order to lay a solid foundation for programming, the routine should be analyzed and intr

UART initialization. 1. We can see through the schematic diagram that the serial port rxd and txd are connected to ok6410 gpa0 and gpa1 respectively .. So first set the input and output status of gpio: 0010 = UART rxd [0] 0010 = UART txd [0] At the same time, set the corresponding up/down resistance relationship. rGPACON = (rGPACON ~(0xff rGPAPUD = (rGPAPUD ~(

We manufacture a new accessory for ipad/iphone which should transfer commands to the IPad. We Use the UART (through a certain apple-protocol called Lingo). My shows that I can only use USB (30PIN Connector) and custom protocols.Question: Is there any-to-use UART-to-connect to the IPad accessory from APP side? If the protocol is implemented in UART, w

: Usart_gpio_init//function: UART GPIO initialization//Ingress parameters: none//Export parameters: none//Note://***************************************void usart_gpio_init ( void) {Gpio_inittypedef gpio_initstructure; Rcc_ahbperiphclockcmd (Rcc_ahbperiph_gpiob, ENABLE);//-----PB6 TX------------------PB7 RX-------------Gpio_ Initstructure.gpio_pin = gpio_pin_6| gpio_pin_7; Gpio_initstructure.gpio_mode = GPIO_MODE_AF; Gpio_initstructure

Uart-wifi Module ESP8266 Because it is only a module, not a complete development board, so you need to connect the peripheral circuit. The trial process encountered a lot of trouble, here all record. 1. Confirm Hardware Version Since the ESP8266 version has been updated, so you need to confirm the PCB version. Features: The middle four IO ports are wired to connect out. 2. Hardware connection If confirmation is the hardware version above, then its

Serial communication is often used to the function, in the STM32 UART has the DMA function, and send and receive can use DMA, the use of DMA sent basically you will not encounter any problem, because when sent will tell the DMA to send the data length, DMA according to send the length of the direct send is OK, However, the use of DMA receive time is different, because sometimes the data receive is not every time is fixed length, but DMA only receive d

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

AR9344 support two uart, the usual debugging serial port is UART0, the driver is using 8250, today because the project needs to enable UART1, the configuration process needs to pay attention to several points1.9344 Gpio Port is multiplexed, can flexibly configure most of the supported features, need to find two Gpio, configured as UART1_TD and UART1_RD function (if using hardware flow control, need to find two Gpio configured as CTS and RTS)2. The dri