/**************************************************************************** * 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
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
The serial communication interface is one of the most common methods for data communication between a processor and other devices. MyProgramThe library is for the msp430f14 series and msp430f16 series. I usually use the single-chip microcomputer: msp430f149 and msp430f169. Both single-chip microcomputer have two Enhanced serial communication interfaces, both of which can be synchronous or asynchronous communication. Even the 169 module usart0 can perform I2C communication. Here, we will only dis
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
Transferred from: http://blog.csdn.net/zeroboundary/article/details/8966586In RS232 the CTS and RTS have a clear meaning, but since Hayes (HAYES) introduced smart Cat (SmartModem) is a bit confusing, but now this meaning for the mainstream, the main chip manufacturers of the UART controller flow control basic use HAYES Modem flow control interpretation.In RS232, the RTS and CTS are used to switch direction in half-duplex mode, this paper does not expl
Code base (only two files were added on the base of HACKRF original code base, one file was changed):Https://github.com/JiaoXianjun/hackrf-UART-1602LCDThe goal is primarily to help people who want to change the debug HACKRF firmware. Because there is no debugging means to change the firmware basic two eyes a dark, groping in the darkness is difficult. The previous days to collect the aircraft firmware has been in the dark good grasp debugging means, s
UART (Universal asynchronous transmitter ER/transmitter)General asynchronous transceiverUART 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,
UART also provides the following functi
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
Misleading of UART instance demo in lpcxpresso
Misleading of UART instance demo in lpcxpressoImport the UART project in example project. In the UART. c file, initialize the serial port processing function to assign the initial value of uartcount to 0.In the main function, after initialization, The uartcount value is u
connection method:Figure 2 UART Flow Control.
Specifically, when the receiver (uart2) deems it acceptable to accept UART data, the RTS is set to a valid bit. The CTS pin of the sender (uart1) receives this signal before sending the data. Generally, when the UART data receiving cache is larger than two bytes free, you can set RTS to receive data effectively. Of c
Objective: to control UART serial port transmitting and receiving data in user space by reading and writing UART device files.Setting the UART baud rate, parity enable, and so on in user space is done through the Termios structure and the Termios library function , which requires the termios.h header file to be included in the application.I. Definition of Termios
Recently too busy, there is no time to write about the ucos-ii transplant, first of all the work is easy to make a mistake in the knowledge points recorded, about the CTS and RTS.
In RS232 the CTS and RTS have a clear meaning, but since Hayes (HAYES) introduced smart Cat (SmartModem) is a bit confusing, but now this meaning for the mainstream, the main chip manufacturers of the UART controller flow control basic use HAYES Modem flow control interpreta
One, Usart data transmission1, Usart Introduction1) in cc2530, there are two serial ports,UART0 corresponding external device IO pin relationship is: p0_2------RX, p0_3------TXUART1 corresponding external device IO pin relationship is: p0_5------RX, p0_4------TX2) modeUART mode and SPI mode2. UART Configuration1) clkconcmd=~0x40; Select the system clock source for external 32MHzcrystaloscillator.2) while (clkconsta0x40); Wait for crystal stability3) c
, but now this meaning for the mainstream, the main chip manufacturers of the UART controller flow control basic use HAYES Modem flow control interpretation.In RS232, the RTS and CTS are used to switch direction in half-duplex mode, this paper does not explain;If the UART only RX, TX two signal, to flow control can only be soft-flow control, if there is rx,tx,cts,rts four signal, it is mostly support the ha
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