当芯片被加密后，在Keil或IAR中下载或者调试时，会弹出以下提示信息： 这时如果点击Yes,那么将会对Flash进行一次mass erase,这样就可以重新下载或者调试程序了。 如果把Do not show this message again复选框勾选上的话，那么以后将不再弹出此提示框，并且会自动进行一次mass erase。 实际使用中，不建议勾选Do not show this message again这一复选框，因为勾上之后就无法直观的看到芯片被锁的提示了。 如果不小心把这一复选框勾上了的话，想要恢复到原来的设置，只能通过修改注册表的方法来实现，具体步骤如下 1) 在CMD窗口下，输入regedit，打开注册表    2)设置 HKEY_CURRENT_USER => Software => SEGGER => J-Link => DontShowAgainUnlockKinetis 为0   

¡EL GRAN DÍA HA LLEGADO, PARTICIPA Y ELIGE AL MEJOR! Te esperamos en el Centro de Congresos del Tecnológico de Monterrey Campus Guadalajara, la exhibición de los proyectos estará disponible a partir de las 09:00 hrs. Se nombrará al ganador a las 13:00 hrs. En seguida de la premiación de The Freescale Cup. La votación se abrirá a las 9:00hrs. Y se cerrará a las 12:30hrs, se tomarán en cuenta solo las interacciones realizadas dentro de este horario. Vota y califica tu proyecto favorito, sigue 2 pasos: 1. VOTA Elige solo UNA de estas 2 opciones. Ingresa a tu cuenta Twitter Publica el hashtag del proyecto #KinetisChallenge Ingresa al Facebook de Freescale University Programs Encuentra la liga y contesta la encuesta, o si lo prefieres puedes hacerlo desde el siguiente acceso.: https://es.surveymonkey.com/s/JQY76J9 2. CALIFICA Califica cada uno de los proyectos de acuerdo a los criterios de selección. Ingresa a https://apps.facebook.com/ranktab/rt.php?l=1452 Califica cada proyecto con los 3 criterios. Observa la matriz de burbujas para ver la opinión de los participantes. Comparte tu calificación en tu muro. Se tomarán en cuenta la sumatoria de votos en Twitter y Survey Monkey; así como la calificación en RankTab. ¡LA ELECCIÓN ESTÁ EN TUS MANOS!

Test environment: FRDM-K64F Rev.D IAR ARM Workbench IDE V8.30.1 MCUXpresso SDK for FRDM-K64F v2.4.2(2018-08-02) Test project is [ftm_output_compare] located with default path: ..\FRDM-K64F\boards\frdmk64f\driver_examples\ftm\output_compare Test reason to verify the CnV register is updated on the next FTM counter change. Three test signals: FTM0_CH0 pin as output compare pin will generate square signal with 1.33KHz . FTM0_CH1 pin generate 24KHz Edge-Aligned PWM signal(High-true pulses (clear Output on match)) with 50% duty cycle as FTM counter monitor. When FTM counter change, the FTM0_CH1 will toggle to output high voltage. Test using a delay() function to emulate modify FTM0_CH0 output compare mode and CnV value periodically. There is a GPIO pin will toggle after each delay() function to detect/verify the CnV value actual load point. FlexTimer module setting: The FTM0 refer clock is 60MHz For the FTM0_CH1 pin generate 24KHz PWM signal, the FTM0 MOD value is fixed to 0x9C3 (60MHz/24KHz = 2500).   Below is the overall signals: Test Process Record: During FTM0 module initialization, set the FTM0_CH0 pin output compare value to 0xA00 (more than MOD register value (0x9C3)) with below code: Set the CnV value more than MOD register is to avoid the output compare be set during at start. After that,  enable FTM0 counter and toggle GPIO pin to set a mark: After delay, toggle GPIO pin and update CnV register to 0x270 (the match point is half of the PWM high voltage). The actual signal is : After the first CH0 output compare set match, before set CH0 pin clear on match. It need to keep the CH0 pin with same output compare mode and set CnV back to 0xA00 (more than MOD) again with below code: Then we set CH0 with clear on match mode and update CnV value to 0x752 (middle of CH1 PWM low voltage): The actual signal is: With the similar code, before next CH0 set on match, it need to keep the CH0 pin with same match compare mode setting and CnV change back to 0xA00 (more than MOD). The actual signal is below: Note: During the output compare signal compare mode set/clear change phase, it need to keep previous output compare mode setting, please don't using kFTM_NoOutputSignal setting at code. Otherwise, the output compare signal will exist decay: Test Result: From FTM0 register value, the FTM0_SYNCONF[SWRSTCNT] bit is clear, which means select Legacy PWM synchronization method. The legacy PWM synchronization method will update Output Compare mode CnV register value at the next FTM counter change. The actual signal also verify it. Below is FTM0 all registers value: For the more detailed info, please check the original thread at here. Please check attachment about test code.

Some early TWR-K64F120M Revision B boards were shipped with incorrect jumper configurations and demo application. Jumper settings should be: J39 shunt 1-2 J16 shunt 1-2 J29 shunt 1-2 J10 shunt 2-3 J15 shunt 2-3 Updated application demo code and Quick Start Guide can be found at https://www.nxp.com/TWR-K64F120M   TWR-K64F120M boards with updated jumper configurations and demo code will be tagged with a label marked TDA4906 on the bottom side of the board.

Please note that the document shown above is an approximation of the original document.

Hi All, attached bootloader is a short program that allows possibility to update existing firmware in Kinetis-M microcontroller device. It consist of Master PC application and a tiny slave application that runs on target device. It uses UART communication.

Fast Startup Guide for Freescale MCU, wirtten by China IMM FAE team for mass market users.

      The MKW01Z device is highly-integrated, cost-effective, smart radio, sub-1 GHz wireless node solution composed of a transceiver supporting FSK, GFSK, MSK, or OOK modulations with a low-power ARM® Cortex M0+ CPU. The highly integrated RF transceiver operates over a wide frequency range including 315 MHz, 433 MHz, 470 MHz, 868 MHz, 915MHz, 928 MHz, and 955 MHz in the license-free Industrial, Scientific and Medical (ISM) frequency bands. This configuration allows users to minimize the use of external components.      The MPXY8600 is a sensor for use in applications that monitor tire pressure and temperature. It contains the pressure and temperature sensors, an X-axis and a Z-axis accelerometer, a microcontroller, an LF receiver and an RF transmitter all within a single package.        This setup offer customers to utilize Freescale MPXY8600/8700 as transmitter and MKW01 as receiver to form 315MHz, 433.92MHz TPMS transmitter and receiver  total solution.

    不得不说Keil貌似是国内用户使用最多的IDE了，其被ARM收购之后，ARM嵌入了ARMCC等编译器推出了Keil MDK开发环境更是受到了广大ARM开发工程师的欢迎，庞大的用户群（很多是从当年的51等8位机直接转过来的）、简洁的管理窗口和友好的UI界面等优势都让其风靡一时，而且毕竟现在成了ARM的“亲儿子”了，其对ARM内核的产品支持还是灰常不错的。     而GCC更是大名鼎鼎，这个至今仍然在维护的GNU项目下的产物，在N多大牛的维护下不断得到优化，其强大的编译效率和跨平台能力也是广为大家所认可（Codewarrior10.x之后，针对ARM的编译器就是集成了GCC）。     而本文的目的是针对那些想从GCC平台迁移到Keil MDK平台的开发者（并不是代表ARMCC比GCC好，这里不拿这两者做对比），可能用习惯了GCC的话移植到ARMCC下会有些差别需要注意，如匿名的联合体union在ARMCC下是不支持的，要想再ARMCC下使用需要在前面添加“#pragma anon_unions”，而这种格式在GCC却是直接支持的。     而如果开发者想将原来在GCC下的工程整体迁移到Kei MDK下，如果工程里存在大量的这种定义，那人为的一条条修改绝对是一件让人抓破头皮的事，呵呵，那有没有简单的一蹴而就的方法呢？咳咳，我都这样说了那肯定就有啦，有点卖关子了，呵呵，其实很简单，我们进入到Project->Options…，设置如下图所示，即添加“--gnu”即可实现在Keil工程下使用GNU工具链GCC来编译工程C文件了，是不是有点太简单了，呵呵。     当然最后我需要提一句，这个“--gnu”是添加在C/C++这个选项卡下的，如果你最开始使用Keil重新新建的一个工程并添加了Keil自动生成的启动代码的话（startup_xxx.s）请慎用在ASM选项卡下添加“--gnu”，因为ARMCC下的汇编格式是与GCC完全不一样的，所以用GCC来编译Keil下生成的汇编是不行的，这点需要注意。

¡ FELICIDADES AL GANADOR! El sábado 7 de diciembre se realizó la final del Kinetis L MCU Challenge México en las instalaciones del Centro de Congresos, Tecnológico de Monterrey Campus Guadalajara; donde se eligió al ganador a través de las redes sociales y la herramienta RankTab. La emoción se sintió entre los participantes durante la votación; al finalizar el conteo de votos y calificaciones en Ranktab ¡obtuvimos un ganador! Nos complace presentar a: Andrés Gafford con el proyecto Tablet Braille para Invidentes como el ganador del Kinetis L MCU Challenge México 2013. Quién se irá de viaje con todos los gastos pagados al Freescale Technology Forum (FTF) en Dallas, Texas del 8 al 11 de abril del 2014. Agradecemos a los finalistas por su esfuerzo y participación en el evento;  también agradecemos a todas las personas que nos ayudaron con su calificación y voto a elegir el mejor de los proyectos. Esperamos que esta competencia haya sido un semillero de grandes ideas que se conviertan en las innovaciones del mañana.

On NXP website we had provide an application note " Kinetis-M Two-Phase Power Meter Reference Design" which can been found here: http://www.nxp.com/docs/en/application-note/DRM149.pdf  This is really a quite useful solution for 2-Phase Power Meter design. From the schematic, there has a LCD display. Many customer sent email to ask for the datasheet of this LCD display(GDH-1247WP). Yes agreed, it is really difficult to find it. ( Even from the google.) I am attaching the data sheet for the segment LCD here for customer to make reference.

Man powers his home from local stream with DIY micro-hydro plant - StumbleUpon The above project is amazing. Imagine a Kinetis V as the inverter for a micro-turbine based on a PMSM or BLDC ??

Today the universal motor is still widely used in home appliances such as vacuum cleaners, washers, hand tools, and food processors. The operational mode, which is used in this application, is closed loop and regulated speed. This mode requires a speed sensor on the motor shaft. Such a sensor is usually an incremental sensor or a tachometer generator. The kind of motor and its drive have a high impact on many home appliance features like cost, size, noise, and efficiency. Electronic control is usually necessary when variables speed or energy savings are required. MCUs offer the advantages of low cost and attractive design. They can operate with only a few external components and reduce the energy consumption as well as the cost. This circuit was designed as a simple schematic using key features of a Kinetis L MCU. For demonstration purposes, the Freescale low cost Freedom KL25z development platform was used. This application note describes the design of a low-cost phase angle motor control drive system based on Freescales’s Kinetis L series microcontroller (MCU) and the MAC4DC snubberless triac. The low-cost single-phase power board is dedicated for universal brushed motors operating from 1000 RPMs to 15,000 RPMs. This application note explains both HW and SW design with an ARM Kinetis L series MCU. Such a low-cost MCU is powerful enough to do the whole job necessary for driving a closed loop phase angle system as well as many others algorithms.        -Freedom development platform with universal motor drive board extension The phase angle control technique is used to adjust the voltage applied to the motor. A phase shift of the gate’s pulses allows the effective voltage, seen by the motor, to be varied. All required functions are performed by just one integrated circuit and a small number of external components. This allows a compact printed circuit board (PCB) design and a cost-effective solution. Learn more about the Kinetis L series Freedom Board Get the full application note in the link bellow:

Description Thing.... Internet Enabled..... with command line and GUI over a TCP connection Parts Fantasma Toys Hand Runner: http://www.newegg.com/Product/Product.aspx?Item=9SIA0190BB9057 FRDM-K64 : http://mbed.org/platforms/FRDM-K64F/ RN-XV: https://www.sparkfun.com/products/10822 FRDM-AUTO: https://community.freescale.com/docs/DOC-99621 GUI Code:  https://github.com/ehughes/InternetofThing MBED Code: http://mbed.org/users/emh203/code/InternetOfThing/wiki/internet_of_thing Action Shots

The mbed Compiler delivers full online editor. it provides a lightweight online C/C++ IDE that is pre-configured to let you quickly write programs, compile and download them to run on your mbed Microcontroller. The only weakness is that it doesn’t have debug feature. In fact, you don't have to install or set up anything to get running with mbed. Because it is a web app, you can log in from anywhere and carry on where you left off, and you are free to work on Windows, Mac, iOS, Android, Linux, or all of them. Currently, mbed Compiler support: FRDM-KL25Z FRDM-KL46Z FRDM-KL05Z FRDM-K20D50M FRDM-K22F Ethernet IoT Starter Kit This article will introduce how to use mbed Compiler to develop code on Freescale FRDM board. Summary:  we can use mbed Online Compiler edit, build, generate binary file. But CAN’T debug. With mbed FRDM KL25z Upgrade pakage, we can burn binary file to board with drag and drop. Its really simple, and it's free, because it is a web based compiler, multi-platforms are supported. so lets get started!

Hi All, I designed one multi-uarts bootloader project for customers, with which the customers can improve their production efficency in factory. The attached files is the host machine and slave machine bootloader programs and a document for reference. Now the programs can work smoothly on K64 freedom board with three uarts broadcust function. Anybody who has such request can refer to my new program. Best regards David

This sample is to use two FRDM-KL02Z to testing the I2C.  By working at 400KHz baud rate, some customer may found the I2C_SDA will generating a dig when failing edge of the I2C_CLK.  Actually it should related with I2C port layout and the question is why this happen and how to get rid of the dig? The truth is I2C pins are open drain, so no one actually drives a high value. The high value is only there because of a pullup resistor on the lines. For the case to connect two of FRDM-KL02Z using the I2C0_SCL and I2C0_SDA lines that are available on J7, these lines are also used for connecting to the inertial sensor that is on the board, and there are 4.7K pullups on both lines. Problem is that there are 4.7K pullups on the lines on both boards, so the pullups are weaker than intended. So customer should remove the pullup resistors from one of the two boards that should help. We even recommend customer might need to replace the 4.7K pullups with an even stronger pullup though when they have more devices on the I2C bus that are all adding loading.

NXP 的BLE芯片目前包括QN902x 和 Kinetis KW3x两大系列，NXP BLE Solution 主页为：Bluetooth Smart|Bluetooth Low Energy|BLE|恩智浦 1）QN902x系列包括QN9020和QN9021，他们主要区别是封装不同，QN9020为QFN48（6x6mm），QN9021为QFN32（5x5mm）。QN902x的主要技术参数如下： 》Cortex- M0内核 》支持BLE4.1 》96Kb ROM，128Kb SPI Flash ，64Kb RAM 。代码在RAM中执行 》最高工作频率32Mhz 》输出功率：-20~4dBm；接收灵敏度：-95dBm 》功耗：接收电流：9.25mA，发送电流：8.8mA ，sleep mode：3uA 该芯片的datasheet：http://cache.nxp.com/documents/data_sheet/QN902X.pdf?fpsp=1&WT_TYPE=Data%20Sheets&WT_VENDOR=FREESCALE&WT_FILE_FORMAT=pdf… 官方的评估板为QN9020DK，链接为：高度可扩展的QN9020应用开发平台|恩智浦 另外一第三方公司也有一套开发板，可用来评估QN902x芯片，其连接地址为：FireBLE - Firefly wiki 2）KW3x，包括KW30和KW31两个系列，KW30 具体信息可以参考：KW30Z|Kinetis Bluetooth Low Energy MCU|恩智浦 KW31具体信息可以参考：KW31ZlKinetis BLE无线MCU|恩智浦 随便说下，NXP还有一个KW4x系列，该芯片可以同时支持Zigbee和BLE，它包括KW40和KW41，主页分别为：KW40Z|Kinetis BLE & 802.15.4无线MCU|恩智浦 和KW41ZlKinetis BLE & 802.15.4无线MCU|恩智浦