MSP430Modulus conversion module-adc12The adc12 module of MSP430 is a 12-bit precision A/D conversion module, which features high speed and versatility. Most of them have built-in ADC modules, while some films without ADC modules can also achieve AD conversion by using the built-in analog comparator. In the product series, we can simply understand their ADC functions through the following list.Series of ADC functions to achieve conversion AccuracyMsp43
I2C subsystem framework, i2c Subsystem
1 I2C subsystem framework
The Linux I2C subsystem consists of the I2C core layer, I2C bus driver, and I2C device driver.
(1)
This article begins by analyzing the kernel's I2C subsystem.
Description: 1. The kernel version of the analysis is 2.6.37.1
2. Development Board for TQ2440, onboard ARM9 (s3c2440)
3.I2C equipment for AT24C02
4. The sequence of analysis is the registration order of the Kernel I2C subsystem (that is, the order in which this series of articles is published).
It is
Linux using IIC Bus Read and write I2C from device registers by Handavei @ Jilin Normal University handawei@jusontech.com reproduced please be sure to indicate the source ******************* *******
2012.7.16 1, this paper gives the implementation program of I2C from device using IIC bus under Linux.
2, this paper gives some very hidden error solutions in programming. 3, this article's reading and writing p
Direct Memory Access (dmadirect Memory Access) uses hardware to directly transmit high-speed data between memory and memory or between memory and I \ O devices without CPU intervention. This method is usually used to transmit data blocks. The msp430f16x series single-chip microcomputer contains a DMA module, and almost all internal Peripherals can trigger DMA to start data access. This module is implemented hereProgramCommon function libraries for ease of use.
Hardware introduction:
Probe Method of I2C driver framework, i2c framework probe
The Linux-based I2C driver adopts the probe method. The Linux driver for any device supporting I2C bus can be written according to the following framework.
The I2C device connects to the cpu's specific
Recently, I accidentally saw a netizen say that the MSP430 also has the GCC compiler, namely, MSPGCC. I also began to think that it is not far from developing the MSP430 in Linux. Google end time, find the MSPGCC Wiki: http://sourceforge.net/apps/mediawiki/mspgcc/index.php? Title = MSPGCC_Wiki, and a compiled installation package already exists under Ubuntu. Here, I don't really like
Recently, I accidentall
This document describes how to develop an I2C interface touch screen driver mounted on the friendly mini-2440 platform.
Kernel edition linux-2.6.32.2,The platform is a touch screen with the arm9-s3c2440 + I2C interface.
For exampleLinux I2C driver architectureDescriptionHttp://www.lupaworld.com/273398/viewspace-204237.html
To mount a new
advantages mean that arm has a wider application scope than AVR. Therefore, if "We use AVR in Middle School" is correct, we should use arm in university.We can see that at91m55800a Based on the ARM core of ATMEL includes a lot of AVR peripherals, but still lacks Twi/I2C, variable gain ADC, EEPROM and other useful components. However, there is no doubt that arm's external expansion and peripherals are more powerful than AVR.In terms of operating syste
The serial communication interface is one of the most common methods for data communication between a processor and other devices. MyProgramThe library is for the msp430f14 series and msp430f16 series. I usually use the single-chip microcomputer: msp430f149 and msp430f169. Both single-chip microcomputer have two Enhanced serial communication interfaces, both of which can be synchronous or asynchronous communication. Even the 169 module usart0 can perform I2C
Original article: Documentation/I2C/upgrading-clientsTranslator: Guo shaobei2010/05/10
Update I2C drivers to the new 2.6 Driver Model========================================================== ==========
Note: the I2C driver here refers to the I2C client driver, for example, RTC, USBTransceiver driver and so on.
Ben doo
Linux under the I2C-driven loading process, divided into I2C equipment layer, I2C adapter layer and I2C core layer
The I2C device driver layer is the drive we write for a particular I2C device, and the following is the
Through the/dev/i2c-n node, the user can directly access the I2C peripheral registers on the userspace board, mainly through i2c_rdwr this IO control command to pass i2c_msg array to kernel to execute. The following code can complete this function:
#include
In android/external/new I2c-util directory, the above source code into ANDROID/EXTERNAL/
Is STM32 hardware I2C a pitfall ?, Stm32 hardware i2c
/**
**************************************** **************************************
* @ Author Maoxiao Hu
* @ Version V1.0.0
* @ Date May-2015
**************************************** **************************************
*
**************************************** **************************************
**/
I have been debugging the hardware
After reading the I2C official agreement document, take s3c2440 and EEPROM to verify it.
Originally want to use s3c2440 SDA and SCL pin Gpio to simulate, but in the absence of an oscilloscope for a week, how can not come out, finally or give up. Even reference to Linux under the i2c-algo-bit.c and I2C-GPIO.C, Still not tuned out. If there is an oscilloscope, it m
Optimization Design of smoke alarm based on MSP430
[Date: 2008-10-22]
Source: World Electronic Components by Li Peng Wang Ting Wu yanwen, Huazhong Normal University
[Font:Large Medium Small]
Introduction
Traditional smoke alarms are generally composed of Smoke sensors and smoke detection chips. The detection chips receive and process sensor signals to determine whether a fire has occurred. This smoke detector has simple structu
Open the kernel configuration entry config_i2c_chardev and load the I2c-dev module.
Device node:/dev/i2c-x.
User space accesses any I2C device mounted to the I2C adapter through the device node.
The Read/write function of the I2c-dev module does not support block transport,
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