32-bit microcontroller IP. The ARM company which designs the ARM cores doesn't make controllers itself, but licences the IP to other manufacturers. ARM is the leading 32-bit controller and is available from tens of suppliers.

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29 views

DSP + ARM Processor For Digital Audio Mixer [on hold]

I'm currently working on a project where I have been tasked with a team to create a digital audio mixer. I need a processor that preferably has a 1 DSP core and 1 ARM core both running close to or ...
-2
votes
1answer
55 views

Solution for recording audio and uploading it through ESP8266 (IoT)

I am using a STM32F401 Nucleo board and I want record audio through the electret microphone and the ADC. So the first question is how do I record the negative voltages. Do I just clamp the signal and ...
-4
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0answers
22 views

why header files and startup keil with out cmsis are ambigous for amatour users?

i have keil v5,i created a new project,i want to work with pure keil,with out library like CMSIS or other. really i can not understand to this header files:they are for me vague. i want to know ...
0
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1answer
29 views

mdot Analog in: how to connect Grove temperature sensor?

I am starting with multitech mdot product. I am confused about how can I use the mdot pin PB_1 (linked to A0 in UDK) to read my Grove temperature sensor value. Is it enough to simply connect it to ...
-3
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0answers
58 views

STM32F103 SysTick Delay Issue

I am using a STM32F103C8 development board. Trying to use the SysTick timer to write a custom delay function. This function takes the delay (in ms) as argument. However, my function is producing ...
0
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0answers
25 views

STM32 Getting incorrect data from SDRAM through DMA2D

I have an 800x600 pixels RGB565 image stored in the SDRAM of my STM32F7-discovery board starting at memory address 0xC0390000. What I want to do is saving this image to an SD card. The code for this ...
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0answers
43 views

jlink This device cannot start. (Code 10) in win7 after update driver

I have one J-link ARM programmer, SO for first time i start it via KEIL software, and KEIL updated it's Driver, So after driver Updated , it's made crazy!!! and the led of its got down , so when i ...
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2answers
54 views

Is it necessary for “LDR R0, [R0]” when saving from r15 in arm?

From ARM® Developer Suite Assembler Guide Saving from r15 In general, avoid saving from r15 if possible. If you do save from r15, the value saved is the address of the current ...
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2answers
56 views

Why are INTERRUPT CONTROLLER SPECIAL REGISTERS in arm different from others? [closed]

For example, in s3c2440, it clears only the bit positions of the SRCPND corresponding to those set to one in the data. The bit positions corresponding to those that are set to 0 in the data remains as ...
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2answers
85 views

Design Consideration: Cortex M0 vs Cortex M4 for IoT Applications [closed]

I'm designing an IoT Device with many sensors which are going to be integrated using serial interfaces like UART, SPI, I2C and so on. For communication capabilities, I plan to use Wi-Fi (IEEE 802.11). ...
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0answers
45 views

What components are associated with a ARM core (CPU)

As the title states what components are associated with an ARM based cores ? I believe each core will have it's own registers, cache and does each core have it's own memory bus for reading and writing ...
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1answer
97 views

Using a Mosfet Gate driver to directly drive a small stepper motor?

I need to control some small, low current stepper motors from a 3V ARM micro controller. The motors typically require 5-12V at 400mA (30 ohm 41mH windings). What occurred to me is to use a Mosfet ...
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4answers
281 views

Debugging an ARM (STM32) Microcontroller using Qt Creator

I have been working with STM32 series ARM microcontrollers on IAR Embedded Workbench for a while. For some reasons, now I need to move my works to Qt-Creator (both on Windows and Linux). In IAR EWARM, ...
2
votes
1answer
57 views

Do I need a license to design IP cores with AXI interfaces?

Many IP cores especially from Xilinx have an AXI interface from ARM. (AXI, AXI-Lite, AXI-Stream, APB, ... are parts of AMBA - ARM's bus architecture). The AXI interface standard is free for download ...
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2answers
45 views

calculate uptime of LPC1768

i want to calculate the uptime of LPC 1768 from when it begins running. for example a function like millis(); in arduino.
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2answers
99 views

How is register access done in case of X86 architecture when there is only In and OUT command for ports?

In ARM architecture the registers of a peripheral are mapped to the RAM so we can access the register using the RAM.
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0answers
29 views

Error while running linker am using TIVA C TM4C123G and IAR

I am trying to change and read my TM4C123G launchpad clock frequency to 80 MHZ using TIVAWARE libraries so here is my code: ...
0
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1answer
46 views

What is ARM Debug Interface?

I was reading about debuging the code for ARM Cortex-M based MCUs. Moreover, I read about ARM Debug Interface, so What is ARM Debug Interface?
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0answers
61 views

Best device to read/write memory on multiple architectures?

tl;dr: I want to read/write memory from a PIC MCU and an EEPROM, both of which are soldered to an experiment board. I would like to explore programming and debugging ARM in the near future. Which ...
2
votes
1answer
105 views

Hand-made interface to SWD to write flash of ARM chip

I'm interested in creating simple interface to SWD to be able to write flash memory of ARM chips. I.e. to create a make-shift programming device - more for sake of exercise. I started reading the ...
2
votes
2answers
115 views

House wide automation network: CAN or Ethernet?

I am half-way through building my home automation system. As an electronic engineer/software developer a lot of this has been rolled myself from scratch and I will hopefully be starting to blog more ...
2
votes
3answers
110 views

Trying to flash STM32f030f4 (ARM, Cortex M0) - what is proper wiring?

I've got STM32F030F4 chips from shop, made a small breadboard adapter for it and tried to connect to its built-in bootloader via USART1. I've failed and I'm somewhat bewildered about wiring. My ...
0
votes
1answer
40 views

Cortex M3 GPIO address (LM3s300)

I had a little confusing regarding the address of GPIO_PortA As mentioned in datasheet: Based address of GPIO PortA:0x40004000 and GIOP_DATA has Offset : 0x000 which mean the address of GPIO_PortA = ...
1
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1answer
74 views

Flashing STM32F030 via uart bootloader under linux

I'm going to evaluate STM32F030 microcontrollers (ARM) for replacement in one measuring device - and ordered a few already. Meanwhile I'm trying to collect info on how to work with them. Currently ...
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0answers
105 views

How to write to internal STM32 Flash memory?

I am working with an ST Discovery board (STM32L152RCT6). I have been able to program the device and do all entry level things. Now I want to write to, and read from, the internal EEPROM and Flash ...
0
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1answer
45 views

ATSamd10 Atmel ARM programming via UART bootloader

I'm trying to collect info on how to program ATSAMD10 chip (Atmel Cortex-M0 ARM). E.g. with LPC111x from NXP I've used gnueabi gcc toolchain to create hex-files and then uploaded them via UART using ...
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1answer
51 views

Where are details regarding peripheral configuration for STM32 controllers in datasheets?

I have recently begun working more with STM32 processors coming from the more simple Atmel 8bit variety. The Atmel datasheets are very nicely laid out -- specifically speaking to how they provide ...
6
votes
2answers
183 views

Unstable/sensitive ARM- External SRAM connection

I designed a board for a specific purpose. There are different active components on the board, including: ATMEL SAM4S16C Controller (runs on 120MHz) W5100 ethernet controller (connected to the SAM ...
0
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1answer
73 views

setting stm32f4 SystemCoreClock to 100Mhz but cant get it (only get 57.6Mhz)

I'am triying to change the stm32f407 systeme core clock to be 100Mhz , to do this I need to set the source of the PLL to be HSE , and configure the PLL coefficient so as to get the right value of ...
3
votes
1answer
237 views

How to start with STM32F103C8T6 board?

I have been using an 8-bit AVR MCUs to build line-follower robots with students for a few years now. Now I would like to step up to an ARM Cortex-M3 because I'd like to add some more CPU-intensive ...
0
votes
1answer
87 views

stm32f4 pull up resistor value

I'am working with Stm32f4 discovery board , i need to know the right value of the pull up resistor on the GPIO port all there is on the datasheet is : week pull up Thank you
1
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1answer
43 views

Programming ARM Option Bytes using Assembly Directives

So, having a look at the datasheet for a specific ARM controller, we find the address space to be mapped out as follows: There are number of ways to accomplish this, one of which is through an ...
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1answer
78 views

Product Development using ARM mBED OS

I have been working on 32-bit ARM cortex controllers writing the code from the grounds up. Now I am looking at ARM mBED OS, but few questions are bothering me. Sorry if it feels too trivial. I have a ...
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1answer
67 views

ARM MCUs in hobbyist-friendly packages (DIP, SOIC) [closed]

This surely was asked several times, but I see the information is generally outdated. I wonder what ARM chips now exist in DIP or SOIC packages so that I can use them in either bread-board or fast ...
2
votes
1answer
21 views

LPC1110 confusion about default system clock and uart baud rate

I'm trying to get acquainted with ARMs on example of LPC1110 device. And there is some confusion about selecting baud rate for UART. I suppose it is running at ...
0
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1answer
58 views

FreeRtos stm32f4 stuck in vTaskDelay

hello i'am using FreeRtos API with stm32f4 microcontroller , the program gets stuck when it enters vTaskDelay , when I debug it I see that it is stuck in this line (2588 of tasks.c at function ...
1
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1answer
51 views

Necessary things in LPC1343 basic development board

I have finished my LPC1343 basic development board,just based on specs from datasheet and some referred from microbuilders.eu. I'm unsure if the board design is good or not so I've attached my ...
0
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0answers
36 views

External interrupt channel on Atmel SAM D

I try to configure some external interrupt that fires when there's high level on a pin. I've read the Atmel application note for the EXTINT driver, but I still don't get, what interrupt channel I ...
0
votes
1answer
76 views

FRDM-KL25z assembly delay loop causes reset

I'm currently working on a project using the FRDM-KL25Z development board and programming using Keil MDK-lite (5.14a). What we're supposed to do is create a simple traffic light using three ...
0
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0answers
46 views

STM32F103RCT6 - locked extra flash/RAM memory?

Currently I'm using STM32F103RCT6 in my embedded project (LQFP-64) and according to specs it should have 256 KBytes of flash and 48 KBytes of RAM. The ST-Link Utility shows that it does actually have ...
0
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0answers
94 views

Reprogramming STM32 when using SWD pins as GPIO

I have prototyped a new design, but being short on pins I was forced to utilise the SWD pins as GPIO. I know when this is done it messes with the ability to program the chip as easily, giving the 'No ...
1
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1answer
88 views

433 Mhz Receiver with stm32f4

How do I receive data with my stm32f4 board with a classic 433 Mhz receiver? Arduino and Raspberry have their libraries to do such a thing. Do I have to implement it myself? If yes, how do I do that? ...
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votes
1answer
72 views

STM32 SPI2 doesn't respond correctly

I have a problem with the SPI2 on stm32f4vg board , I have a code that is working perfectly for spi1 , but when I change the code to run on spi2, the code doesn't respond here is the original code ...
1
vote
2answers
74 views

Is it possible to swap out a 48 MCU for one with 64 pins?

I wonder if I can upgrade a device that is currently using a 48 pin MCU to a 64 pin MCU? I can do this by altering the PCB pin layout but I will have floating pins. The reason why is because it's a ...
0
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0answers
51 views

Can't Get HSE to work with STM32L4-Discovery!

We are running the STM32CubeL4 demo firmware on the STM32L4-Discovery board: We are trying to leverage the demo "IddMeasurement" module to assess power consumption with an external 8 MHz 3.3V square ...
2
votes
1answer
88 views

How to create Simple Web Server with Mbed and W5100 Ethernet Shield

I'm trying to develop a simple web server application with Nucleo f411re and w5100 Ethernet shield. My question is why the client.is_fin_received() function always returns 0. Why doesn't my web page ...
0
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0answers
26 views

Atmel SAMD21 DMA Abort issue

Due to some design requirement, I need to change DMA descriptor at runtime. To achieve this, I am following below steps: 1.Abort DMA channel. DMA hardware will then save currently executing ...
0
votes
1answer
67 views

Need a 1.8V to 5V enable circuit

I have an ARM board which uses a VIO of 1.8V .I need to use one of the ARM pin as enable to other device that need to enable with 5V. How i can do it with this FET( i prefer to use this one cuse he is ...
1
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0answers
76 views

Retargeting printf in Keil on STM32F4-Discovery

I've found lots of ways on the internet to retarget printf to SWO (Single Wire Output) but none worked for me. I'm using Keil µVision 5 which contains a "software component" to retarget printf but ...
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0answers
47 views

ARM Multi Core SoC's

Is it possible for an additional core to have the same functionality and capability as the main core0 ? So two cores (core0 and core2) performing with the exact same responsibilities and capabilities ...