msp430 uart

UART (Universal asynchronous transmitter ER/transmitter)General asynchronous transceiver UART is a chip used to control computers and serial devices. One thing to note is that it provides an interface to the RS-232C data terminal device so that the computer can communicate with the modem or other serial devices that use the RS-232C interface. As part of the interface,

In order to write an article to pave the mat-remind yourself,,,,,,P1.0 level, varies with the level change of the P1.1 pin input#include"io430.h"voidDelayvoid) {unsignedCharA,b,c; for(c=167;c>0; c--) for(b=171;b>0; b--) for(a=1;a>0; a--);}voidMainvoid) {Wdtctl= Wdtpw + wdthold;//The watchdog is turned on by default and is turned off without using it.P1dir =0x01;//P1.0 for Output mode while(1) {P1out=0x01;//P1.0 output High leveldelay (); P1out=0x00;//P1.0 output Low leveld

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

signal line of the RS-422A is ± 2 V, and the recognition voltage of the receiver is ± 0. 2 v. Common Mode: ± 25 V. When transmitting signals at high speed, the impedance matching of the communication line should be taken into account. Generally, the terminal resistor is added at the receiving end to absorb the reflected wave. The resistance network should also be balanced, as shown in Figure 5-9. Figure 5-9 shows the differential output for the RS-422A balanced output

I found some questions when I read the header file ccw.x613x. h In rf_example_code_v1.0. First, let's take a look at ccw.x613x. h.Three # define examples in: # Define defc (name, address) _ no_init volatile unsigned char name @ address; # Define defw (name, address) _ no_init volatile unsigned short name @ address; # Define defcw (name, address) _ no_init Union { Struct { Volatile unsigned char name ##_ L; Volatile unsigned char name ##_ h; }; Volatile unsigned short name; } @ Address; The previ

Generally, flash memory in single chip microcomputer is used for storage.ProgramCodeIs a read-only memory. In the MSP430 microcontroller, you can use the built-in flash controller to erase or rewrite any segment of content. In addition, the MSP430 microcontroller also has a flash area (information memory) for storing data that needs to be permanently stored after power loss. The Flash Controller of 430 can

At the beginning of September, I received an email from Ti about the promotion of the MSP430 Launchpad Development Board. I couldn't help but hook up with my students to apply for a free Ti sample, and join the group to sign up for the memories of the c2000 and MCU Innovation Design Competition (just a soy sauce ......), go to Texas Instruments online technical supportCommunityThe Forum circled. Surprise found Ti is holding a "easy Show,

Ucos-ii on MSP430 Migration 2--detailed process 1, a new IAR project file, saved in the "E:\430uCOSII\OSTest" folder. Create a new folder SRC, which is used to store the source code. As shown in the following figure. 2, add the source code corresponding folder. (1) Create a new two folders under the SRC folder, "Oskernel" and "Msp430ports" respectively. (2) Decompression micrium-ucos-ii-v286.zip. There are 14 files under Micrium\software\ucos-ii\sou

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 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

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 // ---------------------------------------