rxdata

Tags: COM add blog electronic share mic int sig jpgModbus protocol display |modbus Communication display |modbus display electronic screen function code sharing, mainly used to achieve "preset multiple register function code." The "0X1F" function code of the MODBUS-RTU protocol is photographed as follows: An example of the "0X1F" function code for the MODBUS-RTU protocol is as follows: Example: The request is placed in 2 registers from the Modbus display device 17, the starting register is 4

Idd_test_dialog, Edit our main interface dialog box.Double click on "Phone", pop Up the following dialog box, press the Confirm key:VC will enter the source Code editing window, this function is used to handle the serial port event, when the PC serial port received data, will produce a data buffer has data message event, and then call to execute this function. Add the following code, for Data processing, window updates and other operations:VARIANT Variant1;//Define variant variables to hold the

: void Uart1_sendstring (uint8_t* cp) { while ((*CP)! = ') ') { Usart1_send_isr (*CP); cp++; } } A function that sends a single character: void Usart1_send_isr (uint8_t ch) { usart_senddata (USART1, (uint8_t) ch); while (Usart_getflagstatus (USART1, usart_flag_txe) = = RESET); Do you want the buffer to be sent after the decision? } Then open the send interrupt when the data is sent outside the interrupt function. Usart_itconfig (USART1, Usart_it_txe, EN

;Colesafearray safearray_indium;Longlen, K;Byte rxdata [1024]; // sets the byte arrayCstring strtemp;If (m_mscomm.getcommevent 0 = 2) // if the event value is 2, the data is received.{Variant_indium = m_mscomm.getinput 0; // read the bufferSafearray_indium = variant_indium;Len = safearray_inp.getonedimsize (); // obtain the valid data length.For (k = 0; k Safearray_inp.getelement ( K, rxdata + k); // conver

the contents of the edit boxM_ctrlcomm.put_output (COleVariant (m_strsend));//Send data}void Cmscommdlg::onbnclickedexit (){Todo:add your control notification handler code hereM_ctrlcomm.put_portopen (0);//close the serial portCdialog::oncancel ();//Exit Program}3, implement the MSComm control corresponding response function OnOnCommMsComm1 ()VARIANT Variant_inp;COleSafeArray Safearray_inp;LONG len,k;byte rxdata[2048];//setting byte arrayCString strt

function-- Used to display data received by the serial port { //todo:add your control notification handler code here variant VARIANT_INP; colesafearray SAFEARRAY_INP; long len,k; byte rxdata[2048];//Set BYTE array an 8-bit integerthat are not signed. cstring strtemp; cstring Strrxdata; strrxdata.empty (); if (m_gpscom. Getcommevent () ==2) //Event value 2 indicates that there is a character { variant_inp=m_gpscom in the receive buffer. G

the white side to go, right click on the phone icon Click Edit Control can be removed if(m_ctrlcomm.get_commevent () = =2)//an event value of 2 indicates a receive event{BYTE rxdata[255]={0};//Set byte arrayVARIANT Variant_inp=m_ctrlcomm.get_input ();//Read BufferCOleSafeArray SAFEARRAY_INP = VARIANT_INP;//Variant variable converted to COleSafeArray variable LongLen=safearray_inp. Getonedimsize ();//get valid data length for(Longk=0

characters, the oncomm event that receives data is triggered.M_mscomm.setsettings ("9600, N, 8, 1"); // The baud rate is 9600, which has no check bits, 8 data bits, and 1 Stop bits.If (! M_mscomm.getportopen () // open if the serial port is not enabledM_mscomm.setportopen (true); // open the serial portElseM_mscomm.setoutbuffercount (0 );// Control Event Response Declaration// *. H// {Afx_msg (cgolfview)Afx_msg bool oncomm ();Declare_eventsink_map ()//} Afx_msg// *. CppBegin_eventsink_map (cgol

;Colesafearray safearray_indium;Long Len, K;Byte rxdata [2048]; // sets byte array an 8-bit integerthat is not signed.Cstring strtemp;If (m_ctrlcomm.getcommevent () = 2) // if the event value is 2, the receiving buffer contains characters.{// The following code can be added based on your communication protocol.Variant_indium = m_ctrlcomm.getinput (); // read the bufferSafearray_indium = variant_indium; // convert a variable of the variant type to a va

(Status 0x040){//Transmit shift Register is empty -printf"Uart Ready (0x%2x) and send%3d", status, T); inIOWR (Uart_tx_base,1, t++);//Send TX Data - } to } + -Usleep100000); theStatus =Iord_altera_avalon_uart_status (uart_tx_base); *printf"status=0x%x%d\n", status,k++); $ if(Status Altera_avalon_uart_status_rrdy_msk)//check Rrdy flagPanax Notoginseng { -Rxdata = Iord (Uart_tx_base,0); theprintf"Your character Rxd is:\t%d%d

boxM_ctrlcomm.put_output (COleVariant (m_strsend));//Send data}void Cmscommdlg::onbnclickedexit (){Todo:add your control notification handler code hereM_ctrlcomm.put_portopen (0);//close the serial portCdialog::oncancel ();//Exit Program}3. Implement the corresponding response function of MSComm control ONONCOMMMSCOMM1 ()VARIANT Variant_inp;COleSafeArray Safearray_inp;LONG len,k;byte rxdata[2048];//setting byte arrayCString strtemp;if (m_ctrlcomm.get

It mainly modifies the function type and is compatible with normal and enhanced interruptions. The main functions are as follows: (1) uart_regs.h (2) mcu_uart.h (3) mcu_uart.c (4) sys_main.c //-------------------------------------------------------------------------- /** Uart_regs.h** Created on: 2011-4-4* Author: crazybingo*/ # Ifndef uart_regs_h _# Define uart_regs_h _ # DEFINE _ UART // --------------------------------------- typedef struct { Union { {> volatile unsign

1024 Static volatile int tx_done = 0;Volatile static alt_u8 CHR [char_length]; // Callback functionStatic void done (void * handle){Tx_done ++;} Int main (){// Output destination address space data through the serial portInt I;For (I = 0; I {* (CHR + I) = I;} // Create a DMA receiving ChannelAlt_dma_txchan txchan;// Source AddressVoid * source_buff_ptr = (void *) CHR;// Target address uart_base + 2, because the UART txdata register is after rxdata