Stm32 Nucleo Can Bus Example

Because bus collisions are non-destructive, it is possible to achieve 100% bus load. No coding, only configuration. modm generates startup code, HALs and their implementations, communication protocols, drivers for external devices, BSPs, etc… in a modular, customizable process that you can fine-tune to your needs. STM32 Nucleo Dev Kit – Balazs. chxml of the STM32F4-Discovery board, change the board settings, click the. While it is open source, it is not a completed work as OlliW has done and documented. when I set 9600 and try to decode a message with an oscilloscope, I get garbage. MCP2515 CAN Bus Module TJA1050 Receiver SPI Module For 51 MCU ARM. There seems to be a problem with the mapping to the memory and/or IO addresses though. Tx/Rx path of the bxCAN Peripheral. I see the example code but i don't understand when i must define the constant ( in the main. MDK includes. Each of these boards contain an ST-LINK/V2-1 in-circuit debugger and programmer, which can be used either with the on-board MCU or - in standalone mode - with any other applications containing an STM32 MCU. CAN Self test modes such as LOOPBACK,SILENT LOOP BACK,etc with code exercises. CAN_Receive() is ST library function & if copies received data to RxMsg a global buffer. The STM32 Nucleo board comes with the STM32 comprehensive software HAL library together with various packaged software examples, as well as direct access to mbed online resources. For example, wireless node, Semtech SX1276/SX1278 LoRa node, RS485 node, CAN Bus node…. College of Electric Engineering, Zhengzhou University, Zhengzhou, 450001, China Email: [email protected] Now, I will show another example with DMA and I2C to read raw data from MPU6050 acceleration and gyroscope sensor directly. CAN network with Transceivers. [MikrocontrollerProjekte] has reverse engineered a CAN bus media and navigation controller and connected it to an STM32F746G-Discovery board. Open CUBE-MX and create a new project. Note: Note that the SW-DP state machine is inactive until the target reads this ID code. So the sequencusing the STM example DFU tool) The Bootloader is re-flashed with the contents of the DFU (It can be the same code but with a different version number to ensure working) The STM32 is restarted to some simple function such as Flashing LED. Written by an experienced electronics hobbyist and author, Programming with STM32: Getting Started with the Nucleo Board and C/C++ features start-to-finish projects that clearly. Does it make sense to think about porting spark firmware over to the STM32F0 series? Particularly if I don’t need anything but the CAN. Stm32 Hal I2s Example. I might go through the code more carefully later. Same thing. A converted analog value is send in the first byte of a CAN message. Used interfaces: SIM68 (GSM), SIM800(GPS), CAN-Bus, RS-232, • Developed firmware for STM32F103 and RFID TRF7970A module device for reading RFID tags and sending their IDs to CAN-Bus. Here we have to choose the STM32 family of our Nucleo board. To change the CAN settings for the bootloader, knowledge of the CAN protocol, revision. This is part of a series of articles about the general. 最近在搞stm32实验板的can现场总线实验,之前只是搞过STC51的串口通信,相比之下,发觉can总线都挺复杂的。开始时,知道自己是新手,只知道can总线跟串行通信,485通信,I2C通信一样都是用来传输数据通信的,对其工作原理一窍不通,还是从基础开始看书看资料,先了解它的基本原理吧。. CAN signaling (single-ended signals vs differential signals ) \ 5. Can lines also will be on different baud rate. Now, I will show another example with DMA and I2C to read raw data from MPU6050 acceleration and gyroscope sensor directly. Have you tried setting the CAN module into loopback mode for testing? As Mark says the module rx pin needs to see the bus or initialization fails. I will use my custom board based on STM32L0, but any Nucleo can be used by wiring a USB cable to 5V, GND, USB_D+, USB_D-. Even if there are some differences between each rocket, the engineering students use an STM32F4 microcontroller (MCU) across all their designs. One famous and commonly used IDE is the Keil ARM MDK and apart from that we can also use IAR workbench, Atollic TrueStudio, MicroC Pro ARM, Crossworks ARM, Ride 7, PlatformIO+STM32 etc. For STM32F407VG we will use pins PA4-PA7 with SPI1 (note tha alternate function number. From David Sidrane. X-NUCLEO-IDW04A1 WiFi / 802. CAN Bus I/O Description. Each of these boards contain an ST-LINK/V2-1 in-circuit debugger and programmer, which can be used either with the on-board MCU or - in standalone mode - with any other applications containing an STM32 MCU. The CAN bus is an ISO standard bus originally developed for vehicles. There seems to be a problem with the mapping to the memory and/or IO addresses though. Nucleo-F334R8 and PIR example In this example we connect a low cost PIR to our NUCLEO-F334R8 board and if an intruder is detected we will display a message. In this mode, ADC does one conversion and then stops. Things to be aware of: The CAN lines need to be pulled together by about 60 Ω. Code is targeted at the Hi-Tech C compiler, from www. Transmitter board sends 1 byte of data to Receiver board. This instructable guide will not go in-depth into the STM32 code. February 3, 2020. Hi there! Has anyone used CAN bus on a Nucleo F303 board before? I am planning to use a CAN bus to controll a CAN bus controlled servo motor (Hitec MD70 MG CAN), but I just noticed that the pin out from the microcontrollers are: CAN_TD and CAN_RD (pins PA_12 and PA_11). Google for dominant and recessive bus states. Written by an experienced electronics hobbyist and author, Programming with STM32: Getting Started with the Nucleo Board and C/C++ features start-to-finish projects that clearly. Evelta is one-stop source for all your electronic components requirements. To allow synchronous data transmission, the SPI bus uses four wires. The latest marlin had ported to stm32 board,everything works, stable and smooth,have BLTouch,etc. STM32 Nucleo Dev Kit; STM32 Nucleo Dev Kit - Balazs < Back. In many microcontroller projects, you need to read and write data. Configure CAN parameters, e. The problem is that baud rate for TX data is different than it should be. Can bus library Nov 07, 2017, 12:27 am Last Edit : Nov 07, 2017, 12:51 am by tallguy64 So i have found lots of examples that deal with reading and decoding automotive can bus using shields but i need to send and receive. STM32 Primer - UART Example. There is currently support for the following ST boards: STM32F411E-DISCO. Received and transmitted byte values ar. STM32F429I-DISCO. For a general overview, refer to the official manual from page 1092 onwards. Re: CAN bus possible Post by dhylands » Fri May 26, 2017 5:24 pm The ESP doesn't have CAN support biuiltin, so you'll need an external CAN Controller chip which you'd then communicate with over SPI (tyupically). The higher nibble of PCF8574 address is 0100 and this is fixed. Each STM32F4 device has 23 external interrupt or event sources. This paper proposes a multi-channel data collector based on STM32 and Modbus protocol for highway tunnel lighting system. HDC2010 is an integrated humidity and temperature sensor that provides high accuracy measurements with very low power consumption, in an ultra-compact WLCSP (Wafer Level Chip Scale Package). In Our products, Smart Driving. constant 3,3V at the STM32 TX. STM32Cube_FW_F4_V1. Online course on Embedded Systemson - module 9 (CAN Interface) Controller Area Network (CAN) interface in embedded systems: History: CAN or Controller Area Network or CAN-bus is an ISO standard computer network protocol and bus standard, designed for microcontrollers and devices to communicate with each other without a host computer. The signal isn't getting to the CAN bus transceiver chip, let alone the CAN bus itself. Thus, only 112 addresses can be used. The STM32 Nucleo-64-P board comes with the STM32 comprehensive software HAL library, together with various packaged software examples. MCP2515 CAN Bus Module TJA1050 Receiver SPI Module For 51 MCU ARM. 0008058608 * 2700 = 2. Now we will modify the project to send a basic message over the STM32 SPI interface. It is a message-based protocol, designed originally for multiplex electrical wiring within automobiles to save on copper, but is also used in many other contexts. Same thing. In the previous post, an example of using STM32 DMA to perform a simple data copy between 2 arrays was introduced. HDC2010 is an integrated humidity and temperature sensor that provides high accuracy measurements with very low power consumption, in an ultra-compact WLCSP (Wafer Level Chip Scale Package). The ST Nucleo is an Arduino-like board with an STM32 as the microcontroller, and many Arduino shields can be mounted on it. The STM32 CAN example program shows how to configure and use the CAN peripheral of STMicroelectronics STM32F103xx microcontroller. The STM32 is in turn connected to an Android phone. STM32F103 Getting Started (using Keil and STMCubeMX): In this tutorial, I will help you getting installing software's that you will need while developing your application using STM32 Board. What is CANBus?. USB and CAN Bus, operating on 37 General Purpose I/O (GPIO) pins. 3V and 5V systems. Each STM32F4 device has 23 external interrupt or event sources. Page 1 of 1 Start over Page 1 of 1. While it is open source, it is not a completed work as OlliW has done and documented. In this library, we can configure the GPIO for LCD in lcd16x2. c there is the define:. It contains both a CAN Controller and CAN Bus driver chip. You won't see any data to be transmitted to the CAN bus from a solitary node since it evaluates the situation as faulty CAN bus. If you choose to leave all changes will be discarded. In case when your board is not officially supported by Mbed you can manually add custom board definitions to your project. Sehr schönes Programmiermodell auf dem STM32; Viele andere Hausbus-Ansätze nutzen auch den CAN-Bus als Basis; Als einziger Nachteil könnte angesehen werden, dass maximal 64bit Daten pro Nachricht übertragen werden können. In addition to the usual peripherals found in the typical Arduino device, the STM32 device includes a USB controller, RTC (Real Time Clock), DMA (Direct Memory Access controller), CAN bus and more. In this tutorial, I will explain how to use STM32F103 GPIO for controlling an LED on/off. self-testing of bxCAN peripheral with exercises. Theoretically, 7-bit address space allows 128 addresses, however some addresses are reserved for special purpose. In this article I will look at how to set these up for basic use suitable for the majority of applications that need PWM signals. It's a CAN loopback test. The AD7124 example application provides a terminal based console interface that allows a user to select between different configurations, and to sample data in single or continuous conversion modes. The STM32 Nucleo-144 board comes with the STM32 comprehensive free software libraries and examples available with the STM32Cube MCU Package. Here I'll do one more example with the micro's UART. HighTec and ST, Everyone Can Build Embedded Software Development for Automotive. NUCLEO-F446RE Development Boards & Kits - ARM STM32 Nucleo-64 development board with STM32F446RE MCU, supports Arduino and ST morpho connectivity NEWICSHOP service the golbal buyer with Fast deliver & Higher quality components! provide NUCLEO-F446RE quality, NUCLEO-F446RE parameter, NUCLEO-F446RE price. To know more about STM32 board, check other STM32 projects. file and the write binary bash script are all the same. The STM32 Nucleo board comes with the STM32 comprehensive software HAL library together with various packaged software examples, as well as direct access to mbed online resources. 3 SW-DP state machine (reset, idle states, ID code) The State Machine of the SW-DP has an internal ID code which identifies the SW-DP. As with most microcontrollers, almost all STM32 parts come equipped with 1 (or more!) I2C interfaces. This instructable guide will not go in-depth into the STM32 code. CAN Bit timing Calculation \ 7. Now, I will show another example with DMA and I2C to read raw data from MPU6050 acceleration and gyroscope sensor directly. I will use my custom board based on STM32L0, but any Nucleo can be used by wiring a USB cable to 5V, GND, USB_D+, USB_D-. Moreover, project templates for some. Hey Guys, This is another quick update on the Nextion Interface Setup and I will also demonstrate it in the video below. The names are as follows:-. CAN Self-test modes such as LOOPBACK, SILENT LOOPBACK, etc with code exercises. Some devices (boards) comes with clear designation on the PCB, some with misleading designation - address is shifted to the left, so for example OLED display typical address is 0x3C/0x3D (depends of address selector jumper), but shifted to the left by 1 bit. Maximum output speed: Here you can specify separate output speeds. Here are the main points of all CAN controllers: 1. when I set 9600 and try to decode a message with an oscilloscope, I get garbage. STSW-STM32143 - STM32 Nucleo examples, based on Standard Peripheral Library (UM1726), STSW-STM32143, STMicroelectronics. 1 - created on. This tool works with CARBUS Analyzer. differential pair of the CAN bus called CAN Hi and CAN Lo (High and Low). As you can see above PCF8574 has 4 input pins GND, VCC, SDA, SCLand 16 output pins. Page 48: Controller Area Network (can) CAN and USB on same time. STM32F4DISCOVERY (with STM32F407 MCU). STM32F103 GPIO can be configured in 4 different modes (input mode, output mode, analog input mode, and alternate function mode). The STM32 Nucleo board comes with the STM32 comprehensive software HAL library together with various packaged software examples, as well as direct access to mbed online resources. (Both are STM32F4 chips). It can be reading data from the peripheral unit like ADC and writing values to RAM. After we had a quick overview of STM32 ADC peripheral, we can start digging deeper into specifics. Here's an example of a CAN loopback you can try. Each expansion board is supported by corresponding STM32 expansion software (X-CUBE). X-NUCLEO-IDW04A1 WiFi / 802. Features: 2xCAN channels; A lot of additional options: Nissan Leaf tool, KIA coder, LIN bus analyzer; On-line updates; CAN bus gateway functions; Untypical CAN baudrates are supported (33. There is already one page addressing it but without any details for beginners. We have extended the standard CAN functionality with node identification, firmware update, file transfer, bus conflict detection and watchdog features. STM32 - Pointers and sum. I2C is a multi-master and multi-slave bus. For example if the ADC retrieved 2700, the voltage would have been: (3. The STM32 series are great CPUs for embedded developers, hackers, musicians and the like to work with. Nucleo is a good choice, but why not build my own STM32 Core Board?. Sehr schönes Programmiermodell auf dem STM32; Viele andere Hausbus-Ansätze nutzen auch den CAN-Bus als Basis; Als einziger Nachteil könnte angesehen werden, dass maximal 64bit Daten pro Nachricht übertragen werden können. The source code can be compiled, linked and the firmware is ready to be downloaded into the STM32F3 board. canbus-example. This requires modification to your nucleo32 board, namely: soldering across SB4. STM32 microcontrollers offer a large number of serial. The RS485 CAN Shield will easily enable RS485/CAN communication functions for your NUCLEO/XNUCLEO Arduino boards. Thank for your reply. 2016 by Aveal. Thus, only 112 addresses can be used. Alternatively, use your preferred IDE to compile and flash the project into the NUCLEO board. OGS/CAN-bus: The OGS control® bus is a proprietary communications layer on top of standard 1Mbps 11-bit CAN. They are split into 2 sections. STM32 by ST NUCLEO-H743ZI Nucleo Development Board The STM32 Nucleo-144 board comes with the STM32 comprehensive free software libraries and examples available with the STM32Cube package. High performance Cortex M4’s are among the lineup as well as low power Cortex M0’s, all priced below $11. Because bus collisions are non-destructive, it is possible to achieve 100% bus load. CAN_Receive() is ST library function & if copies received data to RxMsg a global buffer. Level: Intermediate Platforms: Windows, Mac OS X, Linux Requirements:. An Arduino/NUCLEO interposer (Available through support ticket request, more information in the Additional Resources section) or some flying wires; A NUCLEO-F429ZI development board; A micro USB cable; A PC to load a binary file in the NUCLEO board or to compile the IAR/TrueSTUDIO projects. Shown is a block diagram of the CAN controller. First interrupt section is for external pins (P0 to P15) on each port, and other section is for other events, like RTC interrupt, Ethernet interrupt, USB interrupt and so on. STSW-STM32143 - STM32 Nucleo examples, based on Standard Peripheral Library (UM1726), STSW-STM32143, STMicroelectronics. Hi there! Has anyone used CAN bus on a Nucleo F303 board before? I am planning to use a CAN bus to controll a CAN bus controlled servo motor (Hitec MD70 MG CAN), but I just noticed that the pin out from the microcontrollers are: CAN_TD and CAN_RD (pins PA_12 and PA_11). Note that CAN has to support multiple transmitters connected to the same cable, including detection of collisions. In this article I will look at how to set these up for basic use suitable for the majority of applications that need PWM signals. Identifier filtering. Since we’re talking about power supply, let’s discuss further on the subject: the NUCLEO board (debugger ST-LINK / V2 and board with STM32 micro) is powered by the MINI-USB connector that provides 5 V. Now let’s see what the code generator did Important, to make it work you have to change the WordLength parameter to. LCD16x2 Library. Any node can send a message at any time, and all the other nodes on the network receive the message. Implementation of the Modbus/TCP Protocol on the STM32 Chen Tiejun, Yang Shaoming College of Electric Engineering, Zhengzhou University, Zhengzhou, 450001, China Email: [email protected] Depending on an ARM core, typically the maximum SWD clock speed is derived from the speed of the core, for example it might be 1/4 of the core clock, but I'm not sure how the limit is derived on the STM32L052. The book will guide you in a clear and practical way to this hardware platform and the official ST CubeHAL, showing its functionalities with a lot of examples and tutorials. A little how-to on the basics of getting the CAN bus up and running on an STM32 microcontroller using Mbed or STM32CubeIDE. Now we will modify the project to send a basic message over the STM32 SPI interface. The peripheral driver library should make it relatively easy to use. Theoretically, 7-bit address space allows 128 addresses, however some addresses are reserved for special purpose. Implementation of the Modbus/TCP Protocol on the STM32. MSP430FR4133 LaunchPad and MCP9808 sensor example using Energia; CAN bus development board. I know it has the hardware for it, but looking at some example code. I have been helping some colleagues with their projects particularly with communications protocols. This paper proposes a multi-channel data collector based on STM32 and Modbus protocol for highway tunnel lighting system. In this section, I will write all libraries based on HAL drivers from ST. #stm32 #stm32 #hal #hal #can #can #cubemx #cubemx #!stm32f4. Designed for, but untested with - Nucleo-F446RE - Nucleo-F767ZI with 2M flash, 512K ram and ethernet (this is larger and needs modification). First of all, locate the datasheet for your STM32 device and find the pins that can be used for SPI. Example : to accept the standard idendifier 0x206: canBus. System Workbench for STM32 can be used to develop on any STM32 using any ST-LINK/V2 type of device via JTAG or SWD debug bus protocols. X-NUCLEO-IPS02A1 24V Intelligent power switch expansion board VPS2535H LED lighting X-NUCLEO-LED61A1 DC-DC LED driver expansion board LED6001, STL3N10F7, STL8N10LF3, STPS2L60A , BAS70KFILM ESDAULC5-1BF4, SMM4F33A-TR STM32 Nucleo Expansion Board Portfolio (*) Refer to www. It also provide an Hardware Abstraction Layer. By default the only. Stm32 Hal I2s Example. A CAN bus has a network speed ranging from 33 Kbps to 1 Mbps. MDK includes. If you modify source code, it has to stay. Before you begin, install VisualGDB 5. STM32 CAN baud rate calculater: It can alculate CAN bus baud rate parameters of STM32 MCU. More information on the video and below link. Even if there are some differences between each rocket, the engineering students use an STM32F4 microcontroller (MCU) across all their designs. CAN-Hacker 3. Many "stm32f4XXX" useless includes, stm32f4_hal. Here is a bit of a look at how to use the ADC on the STM32 for simple applications. The STM32 Nucleo board comes with the STM32 comprehensive software HAL library together with various packaged software examples, as well as direct access to mbed online resources. SD card reader, TFT display etc. Get up and running programming the STM32 line of microcontrollers from STMicroelectronics using the hands-on information contained in this easy-to-follow guide. , yang saat ini tengah menyelesaikan program Doktoral Teknik Mesin di. From the PINOUT tab configure the RCC and TIM14 has show below. But do you have a an example to interact with the STM32 Nucleo over serial port. CAN frame filtering and executrices. CAN signalling (single ended signals vs differential signals ) \ 5. can_bus_mask = reduce (operator. To understand how the CAN bus system works, let's break down the frames sent over the network. The STM32F0 Discovery development board uses an STM32F051R8T6 MCU and integrates the ST-LINK/V2-1 debugger and programmer. This board will be assembled with the low cost STM32F030C6T6 Microcontroller with 32K Flash and 4K RAM. You can use this label afterwards in the program to call and change the pin level for example. I found the tip to "AP32300_XMC4000_Multican_SW" but I didn't found it!. October 1, 2014: Added external interrupts library. This requires modification to your nucleo32 board, namely: soldering across SB4. Explore 15 STM32 Nucleo projects and tutorials with instructions, code and schematics. CAN-Hacker 3. Other CAN analyzer with STM32, STM32F105. Sample projects for the Microchip PIC micro series of microcontrollers, including the PIC12x, PIC16x, PIC18x, PIC24x, and dsPICx microcontrollers. – Certainly the CAN BUS Arduino MCP2515 Module is the most suitable model for designers and hobbyists who want to take their first steps in the CAN world. Stocks of some parts are very low. We have extended the standard CAN functionality with node identification, firmware update, file transfer, bus conflict detection and watchdog features. This is clearly a firmware bug. As with most microcontrollers, almost all STM32 parts come equipped with 1 (or more!) I2C interfaces. Application Examples Introduction: CAN bus bootloader PC software based on Ginkgo USB-CAN interface. Started by: Fernando Flores in: Example Projects. The 4 bits for each pin can be set to:. Here lists the order codes and the respective targeted MCU. Received and transmitted byte values ar. First of all, you need to create a special file custom_targets. stm32 can communication drivers, stm32f103 struggling development boards, programming environments Keil 4. In case when your board is not officially supported by Mbed you can manually add custom board definitions to your project. If you have not set up STM32CubeIDE with your Nucleo board, you will need to do so following the steps outlined in this tutorial. Alternatively, use your preferred IDE to compile and flash the project into the NUCLEO board. The STM32F0x2 USB line provides rich connectivity with crystal-less USB 2. 8" TFT and a Nucleo F767ZI and am trying to use the FMC interface. The code below is for the Reciever NUCLEO. CAN Bit timing Calculation \ 7. CAN Bus Bootloader for TMS470M MCU 3 CAN Settings The Hercules CAN is compliant with the 2. STSW-STM32143 - STM32 Nucleo examples, based on Standard Peripheral Library (UM1726), STSW-STM32143, STMicroelectronics. For example, wireless node, Semtech SX1276/SX1278 LoRa node, RS485 node, CAN Bus node…. The ADM3051 is a nonisolated high speed CAN transceiver. The signal isn't getting to the CAN bus transceiver chip, let alone the CAN bus itself. CAN Self-test modes such as LOOPBACK, SILENT LOOPBACK, etc with code exercises. CAN signaling (single-ended signals vs differential signals ) \ 5. Microcontrollers ARM Cortex M0, M3, M4, H7, STM32F. They also have an excellent support base from multiple microcontroller development forums. Started by: Fernando Flores in: Example Projects. ST Nucleo L4R5ZI; OLIMEX-STM32-E407; OLIMEX-STM32-H407; CAN bus connector; This example uses the Hello World sample with the Segger J-Link tools. They use different philosophy for HAL for different peripherals. We will show how to use direct mode, interrupt-based mode and DMA-controlled mode and will use a logic analyzer to compare the precise timings of various events. A converted analog value is send in the first byte of a CAN message. can j1939 stm32 free download. This library enables an Android smartphone or tablet to act as a. There are many communications protocols currently in use and one of the most popular is known as CAN Bus (Controller Area Network). SPI and DMA example. Make sure there are at least two CAN nodes connected to the same CAN bus. STM32 CAN Identifier Filtering 23 Mar 2017 Introduction. When you do this using processor - you lose a significant amount of processing time. For a general overview, refer to the official manual from page 1092 onwards. STM32 CAN loop back mode. After we had a quick overview of STM32 ADC peripheral, we can start digging deeper into specifics. a in debug mode with -O1. Now, I will show another example with DMA and I2C to read raw data from MPU6050 acceleration and gyroscope sensor directly. Now let's see what the code generator did Important, to make it work you have to change the WordLength parameter to. or_, can_bus_ids) ^ can_bus_filter # Get bits that are not constant among the IDs # We can use all bits except these ones for the mask, so simply flip bits according to current format. August 2015 DocID025833 Rev 9 1/61 1 UM1724 User manual STM32 Nucleo-64 boards Introduction The STM32 Nucleo-64 board (NUCLEO-F030R8, NUCLEO-F070RB, NUCLEO-F072RB,. So it would be great to learn about communication between STM32 and Arduino by using SPI & I2C bus. constant 3,3V at the STM32 TX. The STM32 Nucleo expansion boards plug on top of the Nucleo development boards and provide additional peripheral components and modules such as sensors, actuators, displays, and so on. Application Examples Introduction: CAN bus bootloader PC software based on Ginkgo USB-CAN interface. STM32F103xx series is characterized by a frequency up to 72 MHz, 64 or 128 Kbytes of Flash memory and 20 Kbytes of SRAM, 16 channels for 12-bits analog to digital conversion, timers, SPI, I2C, USART. The problem is that baud rate for TX data is different than it should be. CAN uses a non-destructive method for bus arbitration and collision detection. It has support for every peripheral a STM32 micro has like CAN, USB, ADC, Timers, etc. Nucleo is a good choice. There are many communications protocols currently in use and one of the most popular is known as CAN Bus (Controller Area Network). A Controller Area Network (CAN bus) is a robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other in applications without a host computer. This paper proposes a multi-channel data collector based on STM32 and Modbus protocol for highway tunnel lighting system. Conversion. could you please tell me if there's any application note and drivers for CAN bus. As with most microcontrollers, almost all STM32 parts come equipped with 1 (or more!) I2C interfaces. PRESENTATION SESSION TRANSPORT NETWORK APPLICATION DATA LINK PHYSICAL MICRO-PROCESSOR WITH EMBEDDED CAN CONTROLLER. This requires modification to your nucleo32 board, namely: soldering across SB4.   Sharing identical connectors, the STM32 Nucleo boards can be effortlessly extended by a considerable number of functional application hardware add-ons (Nucleo-64 include. CAN_Receive() is ST library function & if copies received data to RxMsg a global buffer. com, the C18 or C30 compiler from www. io is home to thousands of art, design, science, and technology projects. CAN network with Transceivers. The STM32 Nucleo board comes with the STM32 comprehensive software HAL library together with various packaged software examples, as well as direct access to mbed online resources. I have a STMF746 that I want to use the CAN bus on. i am new to HAL Libraries. Most STM32 microcontrollers feature an internal EEPROM. STM32 Nucleo expansion boards STM32 Nucleo development board Features • Firmware package to start developing using SPIRIT1 or S2-LP expansion boards • Complete middleware to build wireless meter bus (wM-Bus) applications using the wM-Bus library (X-NUCLEO-S2868A2 and X-NUCLEO-IDS01A4 only) • Middleware library with Contiki OS and Contiki. This system is also used to provide vehicle diagnostic information for maintenance. MOMO - Hello, I'm working on the STM32F103Z and I'm looking for CAN driver. Page 1 of 1 Start over Page 1 of 1. In this library, we can configure the GPIO for LCD in lcd16x2. What is CANBus?. Here you can set the interrupt parameters for EXTI13 I set the GPIO mode to detect falling edges (since the user button has a pull-up resistor) Hit Apply and Ok to save the. Now we will modify the project to send a basic message over the STM32 SPI interface. The ADC peripheral on the STM32 processor is a flexible but complex beast. This chip has a separate supply and I/O voltage. Its a serial based communications protocol developed by Bosch. stm32f dual can-bus project; Need firmware written for stm32f105 that utilizes both can lines, and forward traffic from one to another. h and lcd16x2. Help to write the program for STM32F103C8T6 which will send in message CAN an example 410 7 00 00 00 0C to DE 00 00 148mc. STM32 micros just like any other micro provide hardware for serial communication. All the STM32 microcontrollers come with built-in bootloaders that burned in during production. CAN Self-test modes such as LOOPBACK, SILENT LOOPBACK, etc with code exercises. Implementation of the Modbus/TCP Protocol on the STM32 Chen Tiejun, Yang Shaoming College of Electric Engineering, Zhengzhou University, Zhengzhou, 450001, China Email: [email protected] The CAN-BUS V2. A simple stm32 gpio port accessing (reading writing) project. USB and CAN Bus, operating on 37 General Purpose I/O (GPIO) pins. The 11-bit identifier base frame format looks similar, but with shorter CAN IDs. August 2015 DocID025833 Rev 9 1/61 1 UM1724 User manual STM32 Nucleo-64 boards Introduction The STM32 Nucleo-64 board (NUCLEO-F030R8, NUCLEO-F070RB, NUCLEO-F072RB,. STM32 & OpenCM3 Part 3: CANBus Sat, Apr 6, 2019 Companion code for this post available on Github. 2016 by Aveal. The STM32H7A3, STM32H7B3, and STM32H7B0 are the first STM32 microcontrollers to embark 1. It can upgrade online for CAN bus nodes. The STM32 series are great CPUs for embedded developers, hackers, musicians and the like to work with. It offers a 32-bit product range that combines very high performance, real-time capabilities, digital signal processing, and low-power, low-voltage operation, while maintaining full integration and ease of. 目的 Nucleo F303K8ボードでCAN Busによる通信を行う際の覚書を記載します。 環境 Nucleo-F303K8 CAN通信環境 項目 内容 OS Windows 10 Home マイ. Here are the main points of all CAN controllers: 1. After ADC conversion result is stored into 16-bit ADC_DR data register (remember that conversion result is 12-bit), then End of Conversion (EOC) flag is set. NVIC refers to nested vector interrupt controller, is a controller built in cortex arm M3 M4 processors, therefore this feature can also be found at some other brand’s arm M3 M4 processors other than stm32. chcfg and the board. The STM32F0x8 1,8V line operating at 1. It has support for every peripheral a STM32 micro has like CAN, USB, ADC, Timers, etc. • Developed custom bootloader for STM32 for downloading/updating firmware through RS-232, RS-485 and CAN interfaces. CAN uses a non-destructive method for bus arbitration and collision detection. there is an example or there is only can test? thank you vety much. Mikrokontroler STM32 dan CAN Bus, 23. X-NUCLEO-IPS02A1 24V Intelligent power switch expansion board VPS2535H LED lighting X-NUCLEO-LED61A1 DC-DC LED driver expansion board LED6001, STL3N10F7, STL8N10LF3, STPS2L60A , BAS70KFILM ESDAULC5-1BF4, SMM4F33A-TR STM32 Nucleo Expansion Board Portfolio (*) Refer to www. 3 / 4095) * 2700 = 2. when I set 9600 and try to decode a message with an oscilloscope, I get garbage. Contains the basic electronic elements: the Breadboard, wires, LEDs, resistors and more. 9 Documented APIs available for building custom targets Embedded Coder Targets - for Prototyping and Deployment User Downloads (R2013a -R2014a) Texas Instruments C2000 645 ARM Cortex-M 548 Xilinx Zynq-7000 350 ST Microelectronics F4 Discovery 243 ARM Cortex-A 141 Texas Instruments C6000 83 Analog Devices DSP 81 Green Hills MULTI 52 Wind River VxWorks 34 Total 2,177 as of June 2014. Historically, the engineers that started working on this protocol in the early 80s were trying to reduce the amount of electrical wiring necessary in vehicles because they wanted to use less copper, which was particularly expensive at the time. Sharing identical connectors, the STM32 Nucleo boards can be effortlessly extended by a considerable number of functional application hardware add-ons (Nucleo-64 include Arduino Uno rev3 & ST morpho compatible connectors). For example, the address of the part in example 20. First of all, locate the datasheet for your STM32 device and find the pins that can be used for SPI. The STM32 series are great CPUs for embedded developers, hackers, musicians and the like to work with. - This example can be executed in Waspmote v12 and Waspmote v15. This is the fourth post in a series on the STM32 series of MCUs and libopencm3. STM32 serial communication. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. stm32f dual can-bus project; Need firmware written for stm32f105 that utilizes both can lines, and forward traffic from one to another. CAN-Hacker 3. Since we’re talking about power supply, let’s discuss further on the subject: the NUCLEO board (debugger ST-LINK / V2 and board with STM32 micro) is powered by the MINI-USB connector that provides 5 V. デバッグ用CAN bus受信環境. 5 View comments Mi EUREKAs. Many STM32 chipsets support 1 or 2 channel CAN PIN Outs. CAN baud rates from 50 kbit/s up to 1 Mbit/s and standard / extended CAN identifier are supported. As I have Blogged in my previous blogs that the RX Interrupt on Nextion display was not working and I had planned for a Parallel bus handshake between STM32 and Arduino Nano while leaving the Rx decoding part with Arduino Nano. OpenBLT OpenBLT is mostly used as an STM32 bootloader, due to the popularity of STM32 microcontrollers. The CAN bus controller hardware is part of several STM32 families, including the F103 and the F407. The ADM3052 is a 5 kV rms signal isolated high speed CAN transceiver with an integrated bus voltage regulator to use 24 V bus power (for example, as in DeviceNet applications). Getting Started with STM32F103C8T6 STM32 Development Board. Remember also that CAN bus (even a short one) must be terminated with 120 Ohm resitors at both ends. Now that the transceiver circuit is connected to the STM32, we can start writing messages to the CAN bus. Sample projects for the Microchip PIC micro series of microcontrollers, including the PIC12x, PIC16x, PIC18x, PIC24x, and dsPICx microcontrollers. As an example, this board can be wired to it to add an additional 32 I/O lines Supply power to the bus, local supply, or take. Now we will modify the project to send a basic message over the STM32 SPI interface. Most STM32 microcontrollers feature an internal EEPROM. CAN Bus Bootloader for TMS470M MCU 3 CAN Settings The Hercules CAN is compliant with the 2. Each chapter contains clear explanations of the STM32 hardware capabilities to help get you started with the device, including GPIO and several. io is home to thousands of art, design, science, and technology projects. The CAN bus is an ISO standard bus originally developed for vehicles. In this library, we can configure the GPIO for LCD in lcd16x2. There are many communications protocols currently in use and one of the most popular is known as CAN Bus (Controller Area Network). 2018-10-20 sockets networking iot stm32 contiki. This example requires the use of Arduino STM32 core package (https: using Arduino IDE v1. In addition, it can be used to test the example if it is equipped with a Wi-Fi interface. A simple example of CAN bus communications between two STM32 microcontrollers using the updated HAL API functions. Before you begin, install VisualGDB 5. Labels: CAN CAN BUS CAN BUS HAL CAN BUS HAL EXAMPLE CAN HAL stm32 stm32f0 stm32f042 stm32f042c6 stm32f042c6t6 stm32f042x6 stm32f0xx. Nucleo is a good choice, but why not build my own STM32 Core Board?. CAN Bus recessive state and dominant state. I/O Pins: These connect to the CAN transceiver chip pins R and D as already described. Uart to CAN-BUS communication. Article Technical Rating: 8 out of 10 The STM32 family of microcontrollers from STMicroelectronics is based on the ARM Cortex-M 32-bit processor core. After we had a quick overview of STM32 ADC peripheral, we can start digging deeper into specifics. Its for beginners who want to get started in programming STM32 with Keil. The STM32 Nucleo board comes with the STM32 comprehensive software HAL library together with various packaged software examples, as well as direct access to mbed online resources. The device supports Low (10 kBaud - 125 kBaud) and High (10 kBaud- 1 MBaud) speed CAN. STM32 micros just like any other micro provide hardware for serial communication. If you're using a 'Discovery Kit' board, your STM32F303VC chip has two groups of DMA channels, and you can choose which one the DAC peripherals map to. See page 19 of the nucleo32 manual. Nevertheless, if you would like to test another CAN API then you can give the CANnucleo library a try. A Controller Area Network (CAN bus) is a robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other in applications without a host computer. There are many communications protocols currently in use and one of the most popular is known as CAN Bus (Controller Area Network). constant 3,3V at the STM32 TX. Communicating between 2 boards over. 5 View comments Mi EUREKAs. If you modify source code, it has to stay. The highest baud rate I can set on the oscilloscope to correctly decode the message (supposedly sent at 9600) is 9400. 1, support CAN V2. read more May 20, 2018 STM32 Baremetal Examples. The STM32 line of microcontrollers from STMicroelectronics are officially supported by MicroPython, via the STM32 Cube HAL libraries. NUCLEO F302R8 CAN network example. Can any one please post an example of STM32F CAN BUS using HAL Libraries. The STM32 Nucleo-144 board comes with the STM32 comprehensive free software libraries and examples available with the STM32Cube MCU Package. * files are immediately regenerated already in the correct position. Here lists the order codes and the respective targeted MCU. 1; 1; 1 year, 4 months ago Janos Magasrevy. I found the tip to "AP32300_XMC4000_Multican_SW" but I didn't found it!. Designed for, but untested with - Nucleo-F446RE - Nucleo-F767ZI with 2M flash, 512K ram and ethernet (this is larger and needs modification). Since I am rather new to using CAN I'm not sure what information that is relevant but I will try and describe the best I can. In the led blinking firmware we enabled clocking of the GPIO (general-purpose I/O) port and its bus. MicroPython is a lean and efficient implementation of the Python 3 programming language that includes a small subset of the Python standard library and is optimised to run on microcontrollers and in constrained environments. Because bus collisions are non-destructive, it is possible to achieve 100% bus load. Microcontrollers ARM Cortex M0, M3, M4, H7, STM32F. Most of this tutorial also applies to other STM boards, but you have to be carefu. This tool works with CARBUS Analyzer. A remap (see example) can be done to PB8/PB9. USB-CAN AutoBaudRate: CAN bus baud rate auto detection. [MikrocontrollerProjekte] has reverse engineered a CAN bus media and navigation controller and connected it to an STM32F746G-Discovery board. The latest marlin had ported to stm32 board,everything works, stable and smooth,have BLTouch,etc. functionality of the Nucleo open development platform with a wide choice of specialized shields. The higher nibble of PCF8574 address is 0100 and this is fixed. a in debug mode with -O1. It's a CAN loopback test. It's in the stm32f4 examples that you can download from the STM website. High performance Cortex M4’s are among the lineup as well as low power Cortex M0’s, all priced below $11. This bus is used to communicate with up to 127 option modules. I need a script that will use authentication when reading the EV1 desfire card. The "Time Quanta" parts control when a bit is. USART1 can be. CAN bus commands were generated using UAVCAN GUI (https: Added an example running on a NUCLEO-F303RE based board here https:. STM32 has more features than Arduino board. STM32 Nucleo Dev Kit – Balazs. It can initialize device, set filter and other settings. Users of STM32 boards having Controller Area Network (CAN) bus reception capability may have faced an issue in receiving CAN frames when CAN FIFO overrun state is not handled properly. Other readers will always be interested in your opinion of the books you've read. The embedded RTC of a STM32 micro is an independent binary-coded-decimal (BCD) timer counter. We continue to improve our STM32Cube course and today we'll speak about the combined use of SPI and DMA peripherals. CAN_Receive() is ST library function & if copies received data to RxMsg a global buffer. STM32 Tutorial NUCLEO F103RB GPIO Pins. In this article I will look at how to set these up for basic use suitable for the majority of applications that need PWM signals. Other CAN analyzer with STM32, STM32F105. Now, I will show another example with DMA and I2C to read raw data from MPU6050 acceleration and gyroscope sensor directly. In this tutorial, I will explain how to use STM32F103 GPIO for controlling an LED on/off. functionality of the Nucleo open development platform with a wide choice of specialized shields. CAN Bus I/O Description. After all, there is no need to remember the names of all those pesky registers and bitfields. Labels: CAN CAN BUS CAN BUS HAL CAN BUS HAL EXAMPLE CAN HAL stm32 stm32f0 stm32f042 stm32f042c6 stm32f042c6t6 stm32f042x6 stm32f0xx. how to enable CAN bus support on NUCLEO_F091RC General discussions and questions abound development of code with MicroPython that is not hardware specific. In those cases, you need to condition on both CONFIG_CAN_MCP2515 and CONFIG_STM32_SPI1. For improved accuracy this example uses the MCO output from the st-link instead of the HSI (internal) clock. Cheap Integrated Circuits, Buy Quality Electronic Components & Supplies Directly from China Suppliers:Dual CAN bus development board STM32F105RBT6 / STM32 development board Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return. STM32 microcontrollers offer a large number of serial. The previous post, on SPI and DMA, can be found here. The project can then be immediately recompiled with the new board settings. CRH is used to set type/and or speed of pins 8-15 of the port CRL is used to set type/and or speed of pins 0-7 of the port Accessed as a 32 bit word, with 4 bits representing the state of each pin. self-testing of bxCAN peripheral with exercises. The important part, indeed, is the Project type section. Mikrokontroler STM32 dan CAN Bus, 23. 7 (463 ratings) Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately. This transceiver IC1 connects to the STM32 microprocessor IC2 which contains an integral CAN controller via two pins: D. It manages the Chassis Electrical System Control and is responsible for critical activities like engine electrical, and skid control. The STM32 Nucleo board does not require any separate probe as it integrates the ST-LINK/V2-1 debugger and programmer. Here there is the list of the NUCLEO boards. I began to use STM32 since 7 years ago. RE: BUS CAN for STM32. Labels: CAN CAN BUS CAN BUS HAL CAN BUS HAL EXAMPLE CAN HAL stm32 stm32f0 stm32f042 stm32f042c6 stm32f042c6t6 stm32f042x6 stm32f0xx. This is a rather specific post that is motivated by the rather unintuitive use of Identifier filtering on an STM32Fxx CAN Bus and by the impossibility to find some easy examples. It is a message-based protocol, designed originally for multiplex electrical wiring within automobiles to save on copper,. The STM32 Nucleo-64-P board comes with the STM32 comprehensive software HAL library, together with various packaged software examples. From the page that appears you have all the informations regarding your NUCLEO board. A passive infrared sensor ( PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. So it would be great to learn about communication between STM32 and Arduino by using SPI & I2C bus. CAN signaling (single-ended signals vs differential signals ) \ 5. 5 View comments Anonymous August 20, 2018 at 2:54 AM. (Both are STM32F4 chips). Microcontrollers ARM Cortex M0, M3, M4, H7, STM32F. Here is a bit of a look at how to use the ADC on the STM32 for simple applications. To interface the LCD with STM32F103, you need the library files (lcd16x2. You won't see any data to be transmitted to the CAN bus from a solitary node since it evaluates the situation as faulty CAN bus. Now let’s see what the code generator did Important, to make it work you have to change the WordLength parameter to. and for performing other communication-related tasks. From the PINOUT tab configure the RCC and TIM14 has show below. For STM32F407VG we will use pins PA4-PA7 with SPI1 (note tha alternate function number. You won't see any data to be transmitted to the CAN bus from a solitary node since it evaluates the situation as faulty CAN bus. Could someone give me CAN bus example for NUCLEO F302R8 ? 2 Answers Graham S. After ADC conversion result is stored into 16-bit ADC_DR data register (remember that conversion result is 12-bit), then End of Conversion (EOC) flag is set. HC12 - Long Range RF Wireless SERIAL Module HC-12 wireless serial port communication module is a new-generation multichannel embedded wireless data transmission module. First of all, you need to create a special file custom_targets. STMicroelectronics CAN Controller for Cortex-M3 Processors. Page 2-Mini-HowTo DIY UAVCAN: STM32 Added an example running on a NUCLEO-F303RE using Arduino IDE v1. The time to market benefits of using STM32CubeMX are best demonstrated by way of a practical example, so this page provided links to a step-by-step guide to creating an IAR Embedded Workbench for ARM project in STM32CubeMX, including the STM32 pin assignments, and various middleware and peripheral driver components (including FreeRTOS!). Regular flash (that stores code) can also be used, but the EEPROM can be updated byte-by-byte and is independent from regular flash. The first four boards (NUCLEO-F746ZG, NUCLEO-F429ZI, NUCLEO-F446ZE and NUCLEO-F303ZE) are available now at US$23 for the Ethernet versions and US$19 without Ethernet Keil MDK Version 5 is the latest release complete software development environment for a wide range of ARM, Cortex-M, and Cortex-R based microcontroller devices [16,17]. Thanks in advance. 0 and a CAN bus interface, making it the ideal choice for communication gateways, smart-energy devices or game terminals. there is an example or there is only can test? thank you vety much. These are professional quality boards that can be used during project development. I hope that someone could provide a working library or a simple example on how to implement can bus peripheral on STM32F103. NUCLEO-F446RE Development Boards & Kits - ARM STM32 Nucleo-64 development board with STM32F446RE MCU, supports Arduino and ST morpho connectivity NEWICSHOP service the golbal buyer with Fast deliver & Higher quality components! provide NUCLEO-F446RE quality, NUCLEO-F446RE parameter, NUCLEO-F446RE price. Step by step guide to do a custom USB HID device on STM32 using ST CubeMX. Connect STM32 Blue Pill to Sigfox. Buy STMicroelectronics STM32 Nucleo-32 MCU Development Board NUCLEO-F042K6 NUCLEO-F042K6 or other Processor & Microcontroller Development Kits online from RS for next day delivery on your order plus great service and a great price from the largest electronics components. You can use control the shield through STM32 Nucleo board using I-CUBE-LRWAN LoRaWAN software expansion for STM32Cube. The STM32 CAN I/O is TTL, CMOS and 5 volt tolerant, all at the same time making it exceptionally easy to design the interface. HighTec and ST, Everyone Can Build Embedded Software Development for Automotive. Embedded System Design: Developing a CAN BUS diagnostics module for a car. Depending on an ARM core, typically the maximum SWD clock speed is derived from the speed of the core, for example it might be 1/4 of the core clock, but I’m not sure how the limit is derived on the STM32L052. I decided to use the NUCLEO-L053R8 but you can choose what you want. Historically, the engineers that started working on this protocol in the early 80s were trying to reduce the amount of electrical wiring necessary in vehicles because they wanted to use less copper, which was particularly expensive at the time. STSW-STM32143 - STM32 Nucleo examples, based on Standard Peripheral Library (UM1726), STSW-STM32143, STMicroelectronics. The STM32 Nucleo board comes with the STM32 comprehensive software HAL library together with various packaged software examples, as well as direct access to mbed online resources. MYaqoobEmbedded 14,419 views. It can initialize device, set filter and other settings. Received and transmitted byte values are displayed on LCD. MDK for STM32F0, STM32G0, and STM32L0 provides software developers working with STM32 devices with a free-to-use tool suite. Page 48: Controller Area Network (can) CAN and USB on same time. CAN-BUS is a common industrial bus because of its long travel distance, medium communication speed and high reliability. baud rate Make sure you set up a filter even if you want to receive all CAN messages. CAN Self-test modes such as LOOPBACK, SILENT LOOPBACK, etc with code exercises. Using Arduino Sensors with STM32 based NUCLEO boards Right now I'm programming an Arduino Uno Rev3, I'm using a Sensor Shield v5 (image at the bottom) to be able to have several Ultrasonic sensors and Servos. STM32 NUCLEO-F103RB STM32F1 STM32F103 STM32 Development Board supports for Arduino, Embedded ST-LINK DESCRIPTION:The STM32 Nucleo board provides an affordable and flexible way for users to try out new ideas and build prototypes with any STM32 micr. CAN_Receive() is ST library function & if copies received data to RxMsg a global buffer. Could someone give me CAN bus example for NUCLEO F302R8 ? 2 Answers Graham S. Of course, we'll also create an example for STM32 microcontrollers. For STM32F407VG we will use pins PA4-PA7 with SPI1 (note tha alternate function number. The CAN-BUS V2. A passive infrared sensor ( PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. More information on the video and below link. For a general overview, refer to the official manual from page 1092 onwards. They are split into 2 sections. CAN network with Transceivers. Most STM32 microcontrollers feature an internal EEPROM. Can lines also will be on different baud rate. com, the C18 or C30 compiler from www. It is useful for storing settings or calibration data. On the right of the page there are the Example programs, please choose the: Nucleo_blink_led 4. You can also adjust the baud rate with the BaudRate parameter. add a comment | Active Oldest Votes. This is new for me and I'm looking for an example code. It is useful for storing settings or calibration data. Here's an example of a CAN loopback you can try. Communicating between 2 boards over. The STM32 Nucleo board comes with the STM32 comprehensive software HAL library together with various packaged software examples, as well as direct access to mbed online resources. Controller Area Network (CAN) programming Tutorial 10: bit wise bus arbitration animation - Duration: 8:05. 2 it is an universal CAN bus interface. The CM3 module also uses an ARM core microcontroller to facilitate reliable communication with its remote reader modules. I2C is half-duplex communication protocol. The highest baud rate I can set on the oscilloscope to correctly decode the message (supposedly sent at 9600) is 9400. So first I would make sure your connections for CANH and CANL are correct and the bus termination resistance is correct. The STM32 CAN example program shows how to configure and use the CAN peripheral of STMicroelectronics STM32F103xx microcontroller. This CAN-BUS Shield adopts MCP2515 CAN Bus controller with SPI interface and MCP2551 CAN transceiver to give your Arduino/Seeeduino CAN-BUS. Step by step guide to do a custom USB HID device on STM32 using ST CubeMX. STMicroelectronics CAN Controller for Cortex-M3 Processors. The BT are 16 bit timer. A simple example of CAN bus communications between two STM32 microcontrollers using the updated HAL API functions. College of Electric Engineering, Zhengzhou University, Zhengzhou, 450001, China Email: [email protected]
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