msp430 mcu

executes savetarget behind the commandSavetarget: [email protected]-F makefile.target @echo "Saving makefile.target" @echo > Makefile.target "target = $ (target)"Meaning:The first sentence: forcibly delete the file Makefile.target, continue to execute subsequent commands on error (-the role of the symbol)Note: The function of the @ symbol means that the command is not displayedSecond sentence command: display "Saving makefile.target" prompt messageThe third sentence: redirect target =

Reprinted please noteArticleSource and author! Source:Http://blog.csdn.net/xl19862005 By xandy) I. Demodulation Circuit In my design, the demodulation end uses the MSP430 single-chip microcomputer, because the power consumption of Ti series single-chip microcomputer is very low, in sleep state, the current can reach UA level, under normal operation, the current can also be kept at several Ma levels. Connect the right channel of the m

. See lpc214x/demo.c for an example. This port uses the Keil ARM Compiler 2.41. at91sam7x with Freertos/rowley. See at91sam7x_rowley/demo.c for an example. AVR Devices: atmega8/16/32/128/168/169 with WINAVR. See avr/demo.c for an example. Coldfire Devices: MCF5235 with GCC. See mcf5235/demo.c for an example. MCF5235 with CodeWarrior and FreeRTOS port for ColdFire. See mcf5235cw

During multi-host communication, the RS232 interfaces of all devices are on the communication line. Only one device can be a host, and the others can be a slave device. The communication is initiated by the host. Generally, a data frame uses one start bit and nine data bits. Among them, 9th bits (rxb8) are used to indicate whether the frame is an address frame or a data frame. When the Frame Type characterization bit is "1", it indicates that the frame data is an address frame. When the Frame Ty

uninstallation The initialization of the t128 device is mainly to map gpio and t128 registers to the virtual address space first, then check whether the I2C bus driver has initialization, create a mutex, and create a write thread osdwriteproc (), createOSDWrite command non-empty event g_hevosdqueueempty so that when detecting non-empty events, you can callOSDWrite process. Call the device uninstallation function when the device fails to initialize or uninstalls the device. When uninstalling the

I. Overviewas people live more and more attention to the quality of life, the emergence of intelligent body fat can be measured by measuring body fat, body moisture, body weight, and a series of data to provide users with reference. To achieve the goal of testing fitness outcomes or health indicators. Two. Power supply circuit designPower circuit design: Powered by four 1.5v fifth battery. The voltage regulator chip provides 3.3v to the MCU, while the

Early in the morning, the sky is slightly bright (slightly exaggerated, the room is relatively dark ). A burst of fast ringtones pulled me out of my sleep. Mechanical sliding of the phone interface, hello. Hello, I have a problem. Please help. In this scenario, we do not know how many times have been repeated. Back to the truth, this is a strange question. Problem description: The customer reported that the GPIO port was interrupted and could not normally wake up the

accuracy 0.2 °C. The communication interface with the user is UART serial communication. There are two internal communication protocols: Synchronous three-channel ECG protocol and synchronous seven-channel ECG protocol, which can be selected by jumper. The characteristics of the synchronous three-channel ECG protocol are as follows: 19200 baud rate, 8-bit data, 1 start bit, 1 stop bit, and no parity bit. the characteristics of the synchronous seven-channel ECG protocol are as follows: 28800 bau

These days to solve the STM32 MCU's I²c bus occupancy (bus BUSY) problem, feel is a good learning, from the text can be learned from the thinking of the problem of the logical logic, the end of the text and pointed out that often error points, in this share to everyone.Problem description stm32f207 MCU has three groups of I2C,I2C1~I2C3, the first edition of this project hardware using I2C1 three chip (Dsp/codec/eeprom), the operation is good.

First, background:Recently, a project has been taken over, the core chip is both the LPC17XX series MCU, core arm of the COTEX-M3 core.If you want to play with an MCU, you have to take care of its clock!The clock is to the MCU, like the human heart. It gives the AHB, APB Bus The blood (clock frequency), and the devices that hang on the AHB (Advance High bus) bus

line.Each device connected to the bus has its own address, whether it is MCU, LCD driver, memory, or ASIC. Each chip can be either the receiver or the sender, or both, depending on their functions. Obviously, the LCD driver is only a receiver, and the memory or I/O chip can be both a sender or receiver.I2C bus is a multi-master bus. That is to say, more than one IC that can initiate data transmission commands can be connected to it. According to the

1-hour multi-thread structure application Generally, various control systems used by single-chip microcomputer have various interaction processes such as field data collection, control output, working status detection, and data transmission; the mismatch between the response speed of various peripherals and MCU is an important factor restricting the overall performance of the system. In the face of this interaction bottleneck, the use of time-based mu

loaded to the next level of programmable gain amplifier. The echo signal is shown in circuit 3. Siganl In0 ~ The Siganl In3 corresponds to the echo signals of the four-way probe respectively, and the Signal Out is the echo Signal after buffer driving and Impedance Transformation. The P0 port of the single-chip microcomputer provides two signal lines for the MAX4141 channel selection. Table 1 shows the specific work conditions. 4 high frequency amplifier circuitThe echo signal is usually relat

chips (MCU plus DSP or MCU plus ASIC) will add more materials and more work. Dedicated, fixed-function hardware is another method, which has a significant negative impact on design flexibility. If it is customized chip design, there is also NRE (one-time engineering cost) and time to market. If it is a commercially available ASSP (standard product for specific applications), the ability to design different

Many of the friends who have done microcontroller know that after the MCU is burned to write the program firmware, then the program firmware is stored inside the MCU. The program can continue to operate even if the MCU is powered off and then re-energized. This is because the firmware of the MCU is written to write the

to carry out contactless bidirectional data transmission between the reader and the RF card in order to achieve the purpose of target identification and data exchange. The most basic RFID system consists of three parts:1. label (tag, i.e. RF card): consists of a coupling element and a chip, and the label contains a built-in antenna for communication between the RF antennas.2. Reader: The device that reads the label information (which can also be written in the read-write card).3. Antenna: Trans

Thanks to open source and non-open source of various soft phones, so that we can in the test at a very low cost and extremely happy mood, especially jitsi.① about HD cameras.The so-called 1080P HD camera only means that the codec capability of the camera hardware conforms to this standard.If you want to achieve a 1080P video call, the next step is to see if the Softphone's encoding capability supports 1920*1080p.That is: not installed on the high-definition camera, you can make high-definition v

Minimum system:A resonant circuit consisting of quartz crystals and capacitors is used in the ATMEGA16 pin XTAL1 and XTAL2 Sisu, and the oscillator source of the OSC (oscillator) oscillator circuit in the chip is used as the system clock source. A simpler circuit is to use the 4M RC oscillator directly on the chip, so that the C1, C2, R2 and 4M crystals can be omitted, the pins XTAL1 and XTAL2 floating, of course, the system clock frequency accuracy than the use of external crystals, but also su

signal to "1 ", the 2200Hz digital signal is demodulated to "0". It communicates with the MCU through a serial port, and the MCU receives command frames for corresponding data processing. Then, the MCU generates the response frame to be sent back, and the digital signal of the response frame is modulated by the MODEM into the corresponding frequency Hz and 2200H

remains above 4us, here is 4.34us to meet the requirements}voidIic_stop ()//Stop Signal{SDA=0; _nop_ ();//Readiness StatusScl=1; Delayus (); //The state stabilization time required to maintain more than 4usSda=1;//during SCL high, SDA comes up a rising edgeDelayus ();//SDA remains above 4.7us, 4.34 plus function return time greater than 4.7us//Note: Both SCL and SDA are 1 at this point}voidIic_sendbyte (U8 bytedata)//MCU sends a byte{U8 i; U8