uart application

= 0x1;Set baud rateUBRDIV3 = 35;UDIVSLOT3 = 0x1;}void Main (void){Setting the LED light to on pull off modeGpj2con =0xFFFF0000;Gpj2con |=0x1111;Gpj2pud =0xFFFFFF00;Gpj2pud |=0xaa;GPJ2DAT=0XF;Init_serial ();gpj2dat=0x0;/*Set GPIO to serial port modeGpa1con = 0x00ff;Gpa1con |= 0x2200;Setting data formats and related configurationsULCON3 = 0x3;UCON3 = 0x5;UFCON3 = 0x1;Set baud rateUBRDIV3 = 35;UDIVSLOT3 = 0x1;*/Init_serial ();Delay (void);char temp;while (1){Put_c (temp);while ((UTRSTAT3 0x1) ==0

Serial Send function:uint8_t txdata["01234abcde"; Hal_uart_transmit (huart2,txdata,0xffff); // Send the contents of the TxData through the Uart2, the length is 10,timeout time is the maximum value 0xFFFFSerial Reception function 1:uint8_t value='F'; Hal_uart_receive (huart2, (uint8_t *) value,1,+); // in this statement stay 1000ms waiting to receive 1 bytes of data, the data stored in valueSerial Reception function 2:Hal_uart_receive_it (huart2, (uint8_t *) value,1); // The program will not stay

RTS (Require tosend, send request) is an output signal that indicates that the device is ready to receive data, the low level is active, and the low level indicates that the device can receive data. The CTS (Clear tosend, send allow) is an input signal that determines whether data can be sent to the other, low-level, and low-level instructions that the device can send data to each other. Here someone will translate CTS to send permission, I feel really better than translation for clear send. Bec

, indicating that the starting bit appears and the starting bit is confirmed, and the specified data bits and parity bits and stop bits are received. After processing the stop bit is removed, the data bits are assembled into a parallel byte, and after verification, no parity and even error is counted correctly to receive a character. After one character is received, the receiving device continues to test the transmission line, monitoring the arrival of the "0" level and the start of the next cha

; sbuf = *p; while (TI = = 0);//wait for Send flag position bit ti = 0; p++; } } void Main (){P2= (p20x1f) |0xa0;p0=0x00;p2=p20x1f; Uartinit ();Timer0_init (); while (1){if (Overflag){overflag=0;ch_i=0;Uart_sendstring (rxtemp);}} } void Timer0 () Interrupt 1{static unsigned char num;th0= (65535-2000)/256;tl0= (65535-2000)%256;num++;if (num==100){num=0;readflag=1;}}void Uart () Interrupt 4{if (RI){ri=0;Rxtemp[ch_i]=sbuf;ch_i++;if (rxtemp[ch_i-1]

) + ".... return\n\n" Nbsp;ser.write (recv) # Emptying the receive buffer ser.flushinput () # necessary software delay Time.sleep (0.1) if__name__== ' __main__ ': try:main () exceptKeyboardInterrupt: ifser!=None: ser.close () Run Program: [emailprotected]:~#pythonpython_serial.pyTest diagram650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M02/7E/42/wKiom1b6eOOQap13AAAnFhLMWx0506.png "title=" 1459255314.png "alt=" Wkiom1b6eooqap13aaanfhlmwx0506.png "/>This article is from the "Soul Buc

Physical map650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/8B/2F/wKioL1hGsMORxBttAAJMGUmukvs286.png "title=" Am2320.png "alt=" Wkiol1hgsmorxbttaajmgumukvs286.png "/>Pin diagram650) this.width=650; "src=" http://s5.51cto.com/wyfs02/M00/8B/33/wKiom1hGsM-Db6GDAADX2K1req8130.png "title=" pin. png "alt=" Wkiom1hgsm-db6gdaadx2k1req8130.png "/>Wiring diagram650) this.width=650; "src=" http://s2.51cto.com/wyfs02/M01/8B/33/wKiom1hGsN7i8SMAAAGFqcnBRuE198.jpg "title=" Img_ 20161206_203345.jpg "

. The clock in the S 2410 is removed and replaced with the following clock settings:/* 2. Set Clock */Ldr R0, = 0x4c000014mov r1, #0x03//Divider factormov r1, #0x05//Divider factorSTR R1, [R0]/* If the HDIVN non-0,CPU bus mode should be changed from "Fast bus Mode" to "Asynchronous Bus mode" */MRC P15, 0, R1, C1, C0, 0/* read out control register */Orr R1, R1, #0xc0000000/* Set to "Asynchronous Bus mode" */MCR P15, 0, R1, C1, C0, 0/* Write control Register *//* */Ldr R0, =0x4c000004LDR R1, =s3c2

Hardware preparation: tg stk. Connect the 4-pin and 6-pin ports of the 20 PIN expansion port. 4th feet are PD0, Tx, 6th feet are PD1, Rx. Software Process: After the UART is configured, the main function continuously triggers the DMA transmission of TX, transmitting 12 bytes of data in total, 0 ~ 9, '\ n',' \ R '. Rx adopts normal interrupt. # Include # Include # Include "efm32.h"# Include "em_chip.h"# Include "em_cmu.h"# Include "em_gpio.h"# Include

You can search for serial port information online. I am also a newbie. Please contact us. // UART sending module, baud rate 9600 // Chen Peng // 20120118 module uart_tx (sys_clk, // system clock input reset_n, // Asynchronous Reset input Tx, // data line txdata, // The tx_start data line for data transmission, // start the tx_state of the sending signal // The status of the transmitter); inputsys_clk, reset_n, tx_start; input [7: 0] txdata; outputtx,

/************************************** Serial Communication Experiment* Oscillator 11.0592 MHz* Baud rate 9600bps* Interrupt mode implementation: the microcontroller receives computer data and sends it back to the computer after adding 1***************************************/ # Include Unsigned char dat; *******************/Void uart_config (unsigned long Baud, CY) // baud rate, Cy Crystal Oscillator{Tmod = 0x20; // The timer 1 working mode. The default value is.Th1 = 256-(CY/(12*32 * baud ));

At first, I thought that FIFO was too mysterious (although clearly defined, first-in-first-out buffer), and the sending buffer was the same as the first-in-first-out buffer. The sending buffer is 16 bits, and the low 8 bits are the data zone, while the FIFO unit is measured in bytes (actually a character, because each frame number has a start bit and a stop bit ). I am confused. How does it work? I am really limited in ability. I can understand it only one afternoon. What is the use of the first

Analysis of uart log that android cannot bootSimilar to complex R/W mem test fail, it fails in the preloader stage. Please contact the Fraud Department;[SD0] dat crc error, patch: ALPS00787669;NAND project:Init: command r =-1 'mount ubifs ubi @ system/system wait'Init: command r =-1 'mount ubifs ubi @ userdata/data nosuid nodev wait'Init: command r =-1 'mount ubifs ubi @ cache/cache nosuid nodev wait'EMMC project:Init: command r =-1 'mount ext4/emmc @

The debugging of the algorithm porting encryption chip contains 2 parts: Communication Debugging and Algorithm debugging. Before talking about the communication debugging skills, the next chapter will be the algorithm debugging problems in the analysis and summary, to help customers to complete the debugging smoothly.Frequently asked questions in algorithmic debugging:1. Do not build your own projectWhen porting the algorithm, the customer does not need to create a new project, directly open the

messages is summarized as follows: Unable to receive data. Cause: 1. Use an oscilloscope to check whether data is sent from the sending pin; 2. Use an oscilloscope to check whether data is received by the receiving pipe foot; 3. baud rate problem-whether the communications port is consistent; The received data is incorrect because: 1. it may be whether the external clock is used correctly. The default external crystal oscillator of stm32 is 8 MHz. If the incorrect connection is 12 MHz, modify

Frequency lock register (urdlm and urdll) Urrbr, urthr, and urdll share the same address.When the dlab bit of the urlcr register is 1All accesses to the shared address are urdll; when the dlab bit of the urlcr register is 0, the read operation on