16550 uart

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

Abstract:Cp2101 and its upgraded product cp2102 are highly integrated USB-UART bridging circuits manufactured by the United States's silicon company. They can use the simplest external circuit, the least external device and the smallest area of the circuit board for easy conversion from USB2.0 to UART. This paper introduces the main features and practical application methods of the circuit. Keywords:Cp2101

Blog directory:1, the UART and RS232, RS485 relations:2, RS232 and RS485 of the difference and pin introduction3. Reference documentsThe text is as followsI. The relationship between UART and RS232 and RS485:Communication problems, and traffic is the same. Serial communication, we can use bus to analogy.Bus operation can be easily divided into two parts: 1, Station 2, the road where the station determines w

Although the driver of a specific UART device can completely follow 14.2 ~ The 14.5 method is designed to define tty_driver and implement the member functions. However, Linux has implemented the universal tty driver layer (called the serial port core layer) of the UART device in the file serial_core.c ), in this way, the main task of UART driver is transformed in

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

Make sure that the initialize of the object has been initialized by using uboot. // Serial register // Uart0 # Defineulcon0 * (vu32 *) 0x7f005000) // UART channel 0-row control register # Defineucon0 * (vu32 *) 0x7f005004) // UART channel 0 control register # Defineufcon0 * (vu32 *) 0x7f005008) // UART channel 0 FIFO control register # Defineumcon0 * (vu32 *) 0x

Reference: RPi Serial ConnectionThis article from: Http://www.raspberry-projects.com/pi/programming-in-c/uart-serial-port/using-the-uartUsing the UARTIf you is running Raspbian or similar then the UART would be used as a serial console. Using a suitable cable, such as the Ttl-232r-3v3-we, you can connect it to your PC and using some simple terminal software Set to 115200-8-n-1 use the command line interface

about UARTUniversal Asynchronous Transceiver (Universal asynchronous Receiver/transmitter), commonly referred to as a UART. UART communication is quite common in the work, and the project needs to generate a UART signal, which is recorded in the blog. The UART is asynchronous communication because it has only one line

Uart:university asynchronous receiver and transmitter UART//Universal asynchronous receiver and transmitterWhy should have the serial port: Because many embedded device does not have the display, cannot obtain the real data information of the device, so can connect through UART serial port and HyperTerminal, print the output information of the embedded device. can also be traced and debugged via serial port

UART is a chip used to control computers and serial devices. One thing to note is that it provides an interface to the 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, UART also provides the following functions: Converts parallel data transmitted from within the computer to the output serial dat

The problem is: I defined the UART interface of BF533 as the DMA mode to receive data, but the received data is always zero. I don't know if there is a problem with my configuration.Please give me some advice. Thank you. The configuration is as follows:Void init_dma (void){* Pdma6_peripheral_map = 0x6000;* Pdma6_config = wdsize_8 | di_en; (transmitted in bytes | interrupted upon completion of reception)* Pdma6_x_count = 0xa; (buffer of 10 bytes)* Pdma

To do embedded development, UART is almost essential, debugging serial port, GPS, GPRS, Bluetooth and many other modules are used UART interface. Nowadays the hot IoT also has the UART figure, the serial port ble, WIFI, Zigbee, Lora and so on module, a bunch of piles. The NUC972 mentioned in the previous article even built up 11

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

The previous "UART explained" introduced the basic information of the UART, focusing on the signal of the UART. The article excerpt from this article focuses on the baud rate (Baud rates) related content, the higher the baud rate, the faster the transmission speed, but the actual use of the baud rate is higher the better, how much appropriate? The answer is given

Reprinted please indicate from: http://blog.csdn.net/icyfox_bupt/article/details/6766830 Baidu Encyclopedia: UART: Universal asynchronous transmitter/transmitter, a general asynchronous receiving/sending device. UART is a parallel input into a Serial Output chip, usually integrated on the motherboard, most of which are 16550afn chips. Lm3s series single-chip microcomputer generally have

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