msp430 ubuntu

Timers are commonly used by single-chip microcomputer. They are used to generate precise timing or other functions. MSP430 timers can not only complete precise timing, but also generate PWM waveform output, and capture time value (when the rising or falling edge arrives ). A general PWM waveform is generated here.Program. Hardware introduction: The timera of MSP430 Series Single-Chip Microcomputer

The program of the MSP430 microcontroller is sometimes prone to fly, resulting in abnormal operation. The common causes are as follows:The dog is not set to stop or be fed in time.The interrupt function is not defined, but the corresponding interrupt is enabled. When the interrupt occurs, the interrupt function entry cannot be found.The power supply voltage is unstable, or the input voltage of the I/O pin is too high, resulting in internal data interf

In a twinkling of an eye, my junior year is coming to an end, and my college life is coming to an end. Because I am interested in software, I may be away from my major (Electronic Information Science and Technology) after graduation; I also participated in electronic design competitions during my college career. During the competition, I was mainly responsible for Single-Chip MicrocomputerProgramTherefore, we are familiar with the MSP430 Series single

The ad7708 is a 16-bit Σ-△type adconverter chip. in low-frequency applications, the ad7708 can be used as the complete front end of a single power supply. The ad7708 contains a PGA (Programmable Gain Amplifier) to enlarge the signal. The PGA range is 20-28, which is programmable, when the reference voltage is V, the voltage from 20mv to 2.56v can be measured. The ad7708 and ad7718 pin functions exactly the same, but the number of digits ad7718 is 24 bits. If you use 7718, you only need to change

Here, let me discuss the problem of using __delay_cycles delay for MSP430 MCU.The IAR for MSP430 compiler provides a compiler inline precision delay function (not a truefunction) to provide the user with a precise delay, the function prototype is:__intrinsic void __delay_cycles (unsigned long __cycles);This intrinsic function implements the delay of __cycles CPU cycles, but for the setting of this parameter

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

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

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

the MSP430 contains the adc12 module, which can complete 12-bit analog-to-digital conversion. When the requirements for precision or other indicators are not high, you can use the adc12 In the 430 microcontroller to complete the analog-to-digital conversion. Here we mainly implement a general adc12 module initialization Program . The specific data storage and processing needs to be added in the interrupt processing function. Hardware introduct

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

;}} /*************************************** * *********************************** 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

(){ReturnReadkey ();} To implement scanf call, you also need to set it. For detailed settings, refer to: MSP430 library In this way, the scanf port of the keyboard is completed. to use it, you only need to include the stdio. h file, and then initialize the keyboard. Example: Here, the example implements simple interaction between the keyboard and the LCD. When the keyboard inputs data, the LCD is displayed normally, just like the keyboard an

LCD is one of the most commonly used display devices in single chip microcomputer systems.ProgramThe database is tested on the msp430f169 and msp1430f149 single-chip microcomputer and can be used with confidence. LCD uses the 12864 liquid crystal of the ocmj4x8c model and the control liquid crystal uses the parallel method, the three control ports are p3.0, p3.1, and p3.2, and the data uses the P5 data IO port. Hardware introduction: 430 digital IO port: Msp430f149, msp430f169 has a tota

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

Tags: blog HTTP Io ar use for SP on 2014 // Chip msp430f149# Include "io430.h"// Define the clock speed# Define cpu_f (double) 8000000)// Define the latency Function# Define delay_us (x) _ delay_cycles (long) (cpu_f * (double) x/1000000.0 ))# Define delay_ms (x) _ delay_cycles (long) (cpu_f * (double) x/1000.0 )) Void main (void){Unsigned char I;Wdtctl = wdtpw + wdthold;P2dir | = 0x01;P5dir | = 0x70;Bcsctl1 = ~ Xt2off;Bcsctl1 + = 0x30; Do{Ifg1 = ~ Ofifg;For (I = 0xff; I> 0; I --);}While (ifg

First create a common point H file, add the common code as followstypedef union{ struct { unsigned char b0:1; unsigned char b1:1; unsigned char b2:1; unsigned char b3:1; unsigned char b4:1; unsigned char b5:1; unsigned char b6:1; unsigned char b7:1; } Bits;} Uint8_val;General definition when the union is written, to define a flag bit that occupies only a byte, simply define the Uchar byte and then refer to one of its members.For ex