msp430 mcu

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

Why I use P1out ^= 0x01; and p1out = 0x01^ is a different or calculated symbol so each operation is reversed. This operator, however, is maintained at a state of 1.P1out|=bit6 the value of P1out if it is 1, if it is 0, take the value of BIT6What do you mean, p1out |= BIT7?Define the P1.7, which is different from the definition of 51, 51 needs sbit, if you need to define p1.2,p1.3, you can write: P1out |=bit2 + BIT3, and then you can operate on it, such as P1out ^= BIT0, so P1.0 output high level

;//1. p3.6,p3.7 Selected as UART1 communication portME2 |= UTXE1 + URXE1;//2. Enable USART0 to be sent and acceptedUCTL1 |= CHAR;//3. Select 8-bit charactersUTCTL1 |= SSEL0;//4. Select Clock Source, Aclk:ssel0 //Smclk:ssel1UBR01 =0x03;//5. Baud Rate 32767hz:9600UBR11 =0x00;//UMCTL1 =0x4A;//ModulationUCTL1 = ~swrst;//6. Initialize the UART state machineIE2 |= URXIE1;//7. Enable USART1 to receive interrupts}/* Two, Uart1 send a byte*/voidUart1_send_byte (byte dat) { wh

Today, it has been a long time since the JTAG download problem of MSP430. In the end, it is actually a problem with the port mode. In My bios, the default port is the SSP mode, but if JTAG is used, it needs to be changed to the ECP or EPP mode. after entering the BIOS to correct it, there is no problem, debugging is now available. There is another problem that I don't know why. I have bought a 430 Development Board for a long time and used it out. T

operation register you need to control it in the MSP430G25XX.h and in the User guideDTC can control the sampling speed to some extentADC10SA is the start address, and I use 0x0200 because I know that the start of the data I collect is it,You need to add these two lines of code in your loop to keep the analog values up to date Adc10ctl0 |= ENC + adc10sc; Sampling and conversion start __bis_sr_register (Cpuoff + GIE); LPM0 with interrupts enabledThe second sentence is to

Download gcc:http://sourceforge.net/projects/mspgcc/from here After downloading it is a zip package, extracted, and then set environment variables, for example: Export path= $PATH: $HOME/tools/mspgcc-20120406-p20120911/bin You can compile a simple program to test, for example: #include Makefile is: LED.ELF:MAIN.C msp430-gcc.exe-os-mmcu=msp430f149-o led.elf main.c clean : rm led.elf

This section provides sample code for the msp430f5438a SPI Read and write SD card, using the official library msp430_driverlib_2_60_00_02, using IAR for msp430 6.3 by compiling. This section of the code does not differentiate the SD card, so only the SDHC card is operated, and the program is verified to work properly on the Kingston 8GB SDHC microSD card. sdhc.h #ifndef _sdhc_h_ #define _SDHC_H_ #define SDHC_INIT_CLK 125000 #define SDHC_HIGH_CLK 312

MCU Low Power Design (ii) practiceKey Words:MCU low power consumption, stm8l low power consumption, energy saving practice, IAR development environment, ammeter measurement power consumptionIntroduction:Energy consumption is a major problem with battery-powered products, and once the power is exhausted the device will "strike". In the MCU low power Design (a) theory, we introduce the principle of energy sav

All the friends who have made products have realized that a design seems simple, and the hardware design and code compilation will be done quickly, but it is more or less unexpected during the debugging process, these are manifestations of insufficient anti-interference capabilities. The following describes how to avoid detours in your design: Anti-interference is embodied in two aspects: hardware design and software writing. Here's a key note: the main anti-interference Design in

At present, the general color LCD connection mode has so many: MCU mode, RGB mode, SPI mode, VSync mode, Mddi mode and so on. ========================================================================================= First, the hardware interface MCU mode: currently the most commonly used connection mode, usually 80 system (68 system no longer exists). Data bits are transmitted in 8-bit, 9-bit, 16-bit, and 1

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"Ten-day learning MCU and C language programming"Everyone notice this file only the latest version of Thunderbolt can be downloaded, the following lesson is the first few lessons. Right click Use Thunder download.ed2k://|file| [10 days to learn SCM and C language programming]. lesson1.rar|449712628|262b8896ad6828cd33ed7189fe94cb2d|h=76mxif34bfv3vupllbn3asnovcachto3|ed2k://|file| [10-Day Learning MCU and C l

) 0x46 0xb9 Sign (1) 0x6a PC-> MCU 0x68 MCu-> PC Reserve (1) 0x00 Length (1) 0x0c = head + sign + reserve + Length + frame + Data Frame (1) 0x8f and 0x8e indicate different operations Data (X) Checksum (1) 0x77 the addition of the first byte from head to checksum, plus 1, to take 8 bits; Trail (1) 0x16 3. Communication Synchronization ISP: 46 B9 6a 00 0C 80 02 00 36 01 F1 10 30 16 IAP: 46 B9 68 00 06 80 EE

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MCU Low power design (i) theoryKeywords: MCU low power consumption, stm8l low power, energy saving tipsA. MCU energy dissipation factorModern MCUs typically use CMOS technology, which includes 2 aspects of energy consumption:The static consumption mainly is the transistor consumes the energy;Dynamic consumption formula =CXV2XF, where C is the load capacitance of

, the development of a new generation of 80c51, M68HC05, M68HC11 series of single-chip microcomputer, in the single-chip microcomputer in the expansion of various control functions, such as: A/D, PWM, PCA counter capture/comparison logic, high-speed I/O port, WDT, etc. Has broken through the traditional content of microcomputer, toward the connotation of microcontroller development. Therefore, at present, it is time to justify the SCM, the foreign countries have gradually unified into a microcon

Because of internal resource restrictions, MCU software design has its own particularity. Generally, the program does not have complex algorithms and data structures, and the code volume is not large. Generally, the operating system (OS) is not used ), for an MCU with only a few k rom and more than one hundred bytes of RAM, a simple OS also consumes most of the resources. For a system without OS, the popul