xbee uart

1. SendCall Uart_init (115200,115200); Initialize the serial port, the baud rate is set to 115200. The previous one is setting the baud rate of the uart0, followed by the setting, the UART baud rateYou can then use Uart0_tx_buffer (uint8 *buf, UInt16 len) to send data from uart0, and you can use the os_printf () function to send data, but be aware that if you use serial 1Want to use os_printf () need to modifyOs_printf This interface is printed from

-wa5210g_v2_140523) when I tried to downgrade using the Web interface, an error occurred.Using the serial portI dropped the initial goal for the moment, and instead I tried to find a way to control the device and install the software I needed. My first method was to use the UART serial communication method, I soldered the UART pin to a pin, using bus Pirate (my choice) or something like that to connect him

ICore3 Demo V1.0 Program DescriptionFirst, OverviewThis kit contains 5 folders:1, "Arm" is icore3 on ARM's package, the development environment for KEIL 5.17;2, "FPGA" is icore3 on the FPGA package, the development environment for QUARTUSII 15.0 (as if the lower version can also be opened);3, "Related software" contains putty terminal software and UDP debugging software;4, "screen" for the work;5, "Drive" for the onboard USB to UART driver, this exper

, the power-on startup process is as follows: 1. RBL stage: after the system is reset, The RBL program stored in the On-Chip Rom starts to run, the RBL program judges the startup mode based on the level of the btsel [0-3] pin. [00] indicates that it is the NAND startup mode, and the RBL program reads UBL data from the external NAND flash to the internal RAM (UBL can be up to 14 K ), go to UBL Code and run it. [01] indicates that it is emifa startup mode, and RBL directly goes to emifa e

When using struct pointer variables, it is often easy to make a "low-level" error. That is, after defining a struct pointer variable, you can directly operate on the struct Member pointed to by the struct pointer variable, resulting in some inexplicable errors. WeYou must assign a valid struct variable address to the struct pointer variable to operate the struct variable normally.. For example: Struct UART { Int; Uchar B; } Ma

Tool to start downloading. PS: When you turn off the power supply, remove the power cord of the motherboard first, and then turn off the power supply. The power supply voltage should be around 3.9v, not higher than 4.1 v 5. Format: kal_prompt_trace (MOD_USB, "LCD _backlight = % d, % d", LCD _backlight, time_enum );) Download the BIND file to your mobile phone Start the instance and enter * #9646633 # In the phone to enter the working mode, select a device in the working mode, select Set

;_ Interrupt isrexample (){Int inttype;Inttype = getsystemtype ();Queueaddtail (lpintqueuehead, inttype);/* Add a new interrupt to the end of the queue */} Judge whether there is any interruption in the main program loop: While (1){If (! Isintqueueempty ()){Inttype = getfirstint ();Switch (inttype)/* Is it like the message parsing function of Win32 program? */{/* Yes. Our interrupt type resolution is similar to message-driven */Case XXX:/* do we call it "interrupt driver? */...Bre

Original: http://blog.csdn.net/xukai871105/article/details/12684617 Raspberry Pi from abroad, foreign embedded open source field has a good sharing spirit, Raspberry Pi Various integrated libraries are also emerging, the following recommended several. "Python GPIO" (the more precise name of the library should be Raspberry-gpio-python)Simple Introduction: Recommended and easy to get started in the Raspberry Pi official profile. Python gpio is a small Python library that can help users complete ra

module should typically include the following functions:(1) Interrupt Service program ISR(2) initialization of hardware　　A, modify the register, set the hardware parameters (such as the UART should set its baud rate, Ad/da device should set its sampling rate, etc.); b , /* set interrupt vector table */ M_myptr = Make_far_pointer (0l);/* return void far void FAR * * * M_myptr + = Itype_uart;/* Itype_uart:

Analysis of---Based on ti cc254x osalWhen the tool chain configuration is complete, sourceinsight to you to show a source project, without the help of Baidu and development documents, in one or two hours to understand the source of the composition of the framework and interface, for rapid development?" how to quickly understand a new embedded operating system " We have analyzed how to quickly understand Osal task scheduling and inter-mission communication (in fact, Osal just resembles a multitas

: #include Arch/arm/plat-samsung/include/plat/uncompress.hThere are PUTC implementations in Arch/arm/plat-samsung/include/plat/uncompress.h:Static voidPUTC (intch) { if(Uart_rd (S3c2410_ufcon) S3c2410_ufcon_fifomode) { intLevel ; while(1) { level=uart_rd (S3c2410_ufstat); level=Fifo_mask; if(Level Fifo_max) Break; } } Else { /*Not using FIFOs*/ while((Uart_rd (s3c2410_utrstat) s3c2410_utrstat_txe)! =S3c2410_utrstat_txe) bar

interrupt arrives, the ISR reads the received bytes (②) from the receiving buffer sbuf of the UART, puts it into the receive buffer (③), and then wakes the read operation (④, ①) of the user's task side by receiving the semaphore. Throughout the process, you can query the value of the variable for the current number of bytes in the record buffer, which indicates whether the receive buffer is full. The UART

-215 Receiver Card Ports214 Write:latch data, Read:data215 READ:MSB of address, next read:lsb of address21F Reserved220-26f Reserved for I/O Channel270-27f third parallel port (see parallel port):278 Data port279 Status Port27A Control Port280-2AF Reserved for I/O Channel2A2-2A3 Msm58321rs Clock2B0-2DF Alternate EGA, or 3270 PC video (XT, at)2E0 Alternate EGA/VGAE1 GPIB Adapter (at)2E2-2E3 Data Acquisition Adapter (at)2e8-2ef COM4 non PS2 UART (Reserv

Use STM32CUBEMX to generate initialization code.Problem:The HAL_UART_TRANSMIT_DMA function can only be called once, and the second time returns the state Hal_uart_state_busy 0x02.Reason:STM32L1XX_HAL_UART.C begins with a description(##) DMA Configuration If you need to use DMA process (HAL_UART_TRANSMIT_DMA ()and HAL_UART_RECEIVE_DMA () APIs):(+++) Declare a DMA handle structure for the TX/RX channel.(+++) Enable the DMAx interface clock.(+++) Configure the declared DMA handle structure with the

interrupt, you can compile a program with a more complex structure. Such a program can do one thing and monitor one thing. Once something is monitored, interrupt what is being done, process monitoring, of course, you can also monitor multiple things, the image analogy, the interruption function enables the single-chip microcomputer to have a bowl, look at the pot function. The above three steps are equivalent to killing the dragon and giving up the eight-handed martial arts. You can barely prot

. Related functions include: (1) set the interrupt vector table /* Dos. h */Void _ Cdecl setvect (int interruptno, void interrupt (* isr )()); For example, if the interrupt Number of com3 is 4, the address of the corresponding interrupt vector table is 0x0c, and the function of the interrupt program corresponding to 0x0c is set: Setvect (0x0C, PORT1INT ); The interrupt service program port1int is: Void interrupt PORT1INT (){Int c;Do{C = inportb (port1 + 5 )

responsible for system startup, initialization, interruption, and externalBus functions. FEC provides 10/100 M Ethernet Control, which provides independent FIFO and burst DMA, so it can provide 10/100 M Ethernet without affecting CPM PerformanceConnection. Four SCC channels can be independently configured as HDLC mode, asynchronous HDLC mode, and 10 M Ethernet mode. Two SMC channels can be configured as UART mode and transparent transmission mode. I

tagintqueue * next;} Intqueue;Intqueue lpintqueuehead;_ Interrupt isrexample (){Int inttype;Inttype = getsystemtype ();Queueaddtail (lpintqueuehead, inttype);/* Add a new interrupt to the end of the queue */} Judge whether there is any interruption in the main program loop: While (1){If (! Isintqueueempty ()){Inttype = getfirstint ();Switch (inttype)/* Is it like the message parsing function of Win32 program? */{/* Yes. Our interrupt type resolution is similar to message-driven *

September 2011 Time to make notes, then read interrupt subsystem code after doing a PPT, kernel version do not remember, hardware platform is Samsung's s5pv210.This part is mainly for the assembly and hard IRQ parts, the processing of SOFTIRQ after hard IRQ processing, and the processing of the lower half (tasklet/workqueue) are not involved.Agenda? Interrupts in ARM? Important structs? External Interrupt resources in s5pv210? Code flow? Kernel API? Interrupts in ARMThere are only two interrupt

The recent use of node's serial library found very slow, I wrote a driver in C + + using node to call it and test pass, the speed is also very fast, the original version recorded:Test.jsvar test = require ('./build/release/test '); test. Arduinodevice (function(data) { console.log (data);});Gyp configuration:{ "targets":[ { "target_name": "Test", "sources": ["test.cc"] } ]}test.cc#include #include#include#include//used for UART#incl