Questions tagged [cortex-m3]

is an ARM 32bit RISC processor core for microcontrollers

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Strange behaviour using PWM on CortexM3

I have a board with the ATSAM3S2BA-AU, which is a Cortex M3 uC. I need to use 2 PWM channel , here how I've done it : ...
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Atmel Studio JTAG Debugger Behaviour

The qeustion: I would like to know what is different about the way JTAG treats the "step over" and "step into" commands. Background: I am trying to set a GPNVM bit on a SAM3N (ARM Cortex M3) chip ...
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IAR EWARM project doesn't run with STM32 startup file

I'm attempting to test out some basic programs on an STM32L151RD (Cortex-M3) using IAR's Embedded Workbench. I'm using an ST-LINK/V2 programmer. I've downloaded the Standard Peripherals Library and ...
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Interrupt priority in STM32F103RB

I got a doubt about an interrupt grouping in stm32f103. In programming manual of microcontroller I found 5 ways to configure it. But, while debugging, I found 8 ways. How is it possible to get ...
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409 views

JTAG, OpenOCD and Atmel SAM3X

I'm trying to set up OpenOCD debugging through a JTAG port on a custom board with an Atmel ATSAM3X8E microcontroller. OpenOCD is running on a Raspberry Pi using the bcm2835 native GPIO. The JTAG ...
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3answers
344 views

Unable to get SPI working on STM32 Cortex-M3 (Blue Pill) with CMSIS

I am trying to connect to an RFM95W module using the Cortex-M3 Blue Pill from ST. I am an embedded novice but know my way around linux, so I used the below code on an Rpi3 to connect to the chip and ...
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SoftConsole VS Keil for Smatfusion2 or any other development environment?

In order to program the ARM Cortex-M3 processor which is embedded in the Microsemi FPGA board SmartFusion2, I think there is two possibilities (correct me if wrong): Keil MDK (Microcontroller ...
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190 views

LPC17xx internal pull-ups on JTAG etc

The the NXP LPC17xx Cortex-M3 family has internal pull-up resistors on some important pins such as the JTAG, NMI, Bootloader-select pin etc. While reading the data-sheet I learned that the pull-up is ...