msp430 microcontroller

This article refers to: Http://bbs.ednchina.com/BLOG_ARTICLE_3013784.HTMMSP430F149 has two usart communication ports, the performance is exactly the same, each communication port can be converted through the RS232 and RS485 chip, and the corresponding serial interface circuit communication. The msp430f149 supports serial asynchronous and synchronous communication, each with a separate frame format and independent control registers.Usart Asynchronous communicationThe

# # dmem_total_size (dmem_block_size*dmem_block_num)///Memory Total size typedef enum{ Dmem_free = 0, dmem_used = 1,}dmem_used_item;typedef struct{Dmem_used_item used; Use state uint16_t blk_s; Starting block ordinal uint16_t blk_num; Number of blocks}dmem_apply;typedef struct{Dmem_used_item Tb_blk[dmem_block_num]; DMEM Tb_user[dmem_block_num]; User request memory information dmem_apply Tb_apply[dmem_block_num]; The system allocates memory information uint16_t

void Timer0_isr () interrupt 5 {countmilliseconds + +; // is only responsible for self-addition, add to the maximum and start again from 0 }u16 Setdelay (U16 t) { return ( Countmilliseconds + T-1 ); }u8 Checkdelay (U16 t) // returns a nonzero representation Timed end { return (((T- countmilliseconds) 0x8000 ) >> 8 ); // } Use 1: (more general usage)void Delay_ms (U16 W)// delay How many ms{ u16 temp ; = Setdelay (w); while (!

The malloc () function in C language is used to dynamically allocate a space in the memory to store data. It is very useful for applications that need to dynamically allocate memory during program execution. The Microchip compiler C30 (16-Bit Microcontroller) and C32 (32-Bit Microcontroller) also began to implement this function in a newer version, this adds a lot of flexibility to the programming of a sin

In order to write an article to pave the mat-remind yourself,,,,,,These two days have been looking for#pragma vector = port1_vectorvoid p1_interrupt ()//P1 port Interrupt function { }For the explanation of these two sentences, at least let oneself feel can persuade oneselfAfter seeing a lot of my own understanding#pragma vector = Port1_vectorIn layman's terms, this is to tell the C compiler that the function below you is the interrupt function of the P1 port, and enters the following function w

prohibited in this mode, DCO clock source if it is ACLK, then DCO is also valid;⑦ The MSP430 header file has a detailed definition of the low-power mode, such as: to enter the low-power mode 0, you can write the LPM0 directly in the program; Enter low-power mode 4 to write LMP4 directly. Exit the low-power mode as follows:Lpm0_exit; Exit low-Power mode 0 // too easy to have wood thereLpm4_exit; Exit Low Power Mode 4 (exceptLPM4.5 )Summarize the exper

1. General architectureMSP430 MCU adopts von Neumann structure, including 16-bit RISC CPU, memory, on-chip peripheral, clock system, simulation system and data bus and address bus.2, msp430x CPU (Cpux)DB AB Alu-Number MSP430F1XX 16-bit 16-bit (maximum addressing 64KB) 16-bit->CPU Msp430f2xx/4xx/5xx/6xx 16-bit 20-bit (maximum addressing 1MB) 20-bit->cpux CPU Internal registers:R0:PC program Counter procedure Pointer 20bitsR1:SP point stack stack pointer 20bits downR2:SR/CG1 Stat

, the information can be transmitted in two directions, but not at the same time two-way transmission is called single-duplex communication, the same two-way transmission is called full-duplex communication.Serial communication can be divided into synchronous communication and asynchronous communication two, asynchronous communication (UART) transceiver does not have the same clock source, and synchronous communication (SPI, I²C) has the same clock source.The USCI has a hardware module that supp

The IAP Upgrade Program tested and written over the past few days is really bad. It can be downloaded but cannot run. After a variety of tests, I finally found the cause of the problem. Now I will summarize the reasons when I write the IAP program. Problems and Solutions. First, we need to implement the IAP Upgrade Program for single-chip microcomputer. We need to know how our IDE can Fix the compilation address of the function or variable of the program, because we need to fix the address of

, the power supply. The original idea was very simple: USB power supply! It's easy, so I didn't hesitate to choose USB to provide the driver power for the system. But at the end of the project, there was no USB interface next to it, so can you still use it, as a result, we have learned that the project we are working on is always user-oriented, and the power supply must be done independently so that it can be called a system. 3. The next step is the software part. We should have no system cont

Implementation of MSP430 FFT algorithmHttp://bbs.21ic.com/icview-391532-1-1.htmlHttp://blog.sina.com.cn/s/blog_6cd2030b01018fp8.htmlThe physical meaning of FFT algorithmhttp://blog.csdn.net/hzn407487204/article/details/6249945Complete DSP implementation of FFT algorithmhttp://blog.csdn.net/xiahouzuoxin/article/details/9790455An explanation of FFT algorithmHttp://blog.sina.com.cn/s/blog_6340cd9c0101e3id.htmlMSP430 Study notes-Implementation of the root

Abstract: The Real-Time Multitasking system mechanism and performance are described comprehensively, and a method to realize this Real-Time Multitasking mechanism is proposed: the time slice rotation scheduling method. This scheduling algorithm is implemented in microcontroller and an example of its application in the train gate friction coefficient test system is provided.Keywords:Real-Time Multitasking; time slice; rotation scheduling;

ATMEL Corporation announced the launch of its AT91CAP7A-STK entry-level development kit, designed to evaluate its ProcessorCustom cap Microcontroller(MCU) series of entry-level tools. The custom MCU of cap7 allows designers to transfer from the "ARM7 and FPGA" design to a low one-time R D cost (NRE) Single ChipSolution: the cost per device is reduced by about 30%, and the performance is improved by 8 times. The static power consumption and working po

mplab IDE and allows Debugging Using online simulators and online debugger. The default installation directory is c: \ mcc18. After the installation is complete, open the language tool mounting Settings dialog box. You can also see the interface shown in 4. When using mmc18 programming, you must add the connector script file (*. LKR) and header file (*. h) at the same time ). The connector script file mainly provides the storage space available for the connector and how to use the space, which

Source: again out of a scheduler, small resources microcontroller is worth a useSelf-thought has the following characteristics:1) Super portability, CPU-independent, almost any CPU that supports C programming can be used! (This article only takes 51 single-chip microcomputer as an example, but can actually be transplanted arbitrarily)2) Small and small, the principle is very simple, a look will understand.3) province and province, can be said to the R

contrast, the MCS-51 microcontroller command system has a total of 111 commands. The introduction in this book is mainly aimed at the 8-Bit Microcontroller PIC16F877 of the mid-range Microchip Company, which has the on-chip (On-Chip) EEPROM data storage and flashProgramMemory, which can realize in-circuit debugging and In-circuit serial programming. With the help of the Economic online debugger (MPLAB-ICD)

In the learning of the microcontroller only really know what the C language is, it is to do ~ but the C language used to embed only its small part of the application, there are many places.We are not in the process of writing, many errors even if the compiler passed the results of our expectations, it is not difficult to find out where the wrong? I think that language can be called language, it is certainly a tool, a mutual communication between each

Find the source of a development environment that supports information about AVR, MSP430, and ARM-general Linux technology-Linux programming and kernel. For more information, see the following. The avr-libc of Ubuntu 8.04 is too old to feel bad. By luck, we found a third-party source. Http://think.objectweb.org/toolchains.html It contains three development environments: AVR, MSP 430, and ARM. I hope it will be useful to you. An environment th

;}} /*************************************** * *********************************** function: read a byte from the 3-wire SPI bus * parameter: * return: * Note :********** **************************************** * ********************/Unsigned char spi3_recv_byte (void) {unsigned char Cx = 8; unsigned char dat = 0; spi3_dir = ~ Spi3_io; while (CX --) {dat >>= 1; if (spi3_in spi3_io) DAT | = 0x80; else dat = ~ 0x80; spi3_sclk_0; spi3_sclk_1;} return dat ;} // Spi3.h # ifndef _ spi3_h __# DEFI

Using MSP430 (f149) for infrared reception is simpler than sending. The infrared sensor I use is hs0038b. The original output is low when receiving a 38 K infrared. Otherwise, the output is high, we can start to writeProgramBecause there are many circuit diagrams of hs0038b, I will not post them here. The following is a specific example.Code: # Include Include the sorted infrared transmission and receipt. Here we will make a record. If you have a