Arm

The GNU ARM compiler (arm-none-eabi-gcc) is a widely used toolchain for compiling code for ARM Cortex-M0 and Cortex-M1 microcontrollers. However, the compiler is not always able to generate optimal code for these resource-constrained chips. This can lead to inefficient code that takes up more flash memory, runs slower, and consumes extra power. Fortunately, with some…

When using the GNU-ARM toolchain to compile code for Cortex-M0/M1 microcontrollers, developers may encounter code generation issues that lead to inefficient or incorrect code. The Cortex-M0 and Cortex-M1 are low-power microcontroller cores designed for cost-sensitive and power-constrained embedded applications. Optimizing code size and performance is critical. This article provides an overview of common code generation…

The program counter register is essential for executing code on a Cortex-M0 processor. Not being able to locate this register indicates an issue with understanding the architecture or accessing the appropriate memory locations. There are a few key reasons why you may be unable to find the program counter register on your Cortex-M0 system. The…

Seeing the error message “Could not stop Cortex-M device!” when trying to debug or program a Cortex-M chip over JTAG is a common issue that can often be resolved by checking the physical JTAG connections. There are a few key things to check: 1. Check the JTAG cable The most likely culprit is a problem…

The short answer is yes, it is possible to port the DesignStart Eval design to a different FPGA development board than the one it was originally targeted for. However, it requires some effort and hardware expertise to make the necessary modifications. The feasibility and level of difficulty will depend on how compatible the new target…

The short answer is yes, it is possible to place interrupt vectors in RAM instead of flash memory on Cortex M0 microcontrollers after the bootloader has run. However, there are some important considerations to keep in mind when doing this. Overview of Cortex M0 Interrupt Handling On Cortex M0 MCUs, the interrupt vector table is…

Activating the Eventrecorder together with RTX5 on a Cortex-M0 microcontroller provides powerful insights into the real-time behavior of your embedded system. The Eventrecorder module lets you trace context switches, interrupts, scheduler events, and custom instrumentation hooks added to your RTX5-based application. When correlated against your task timing and scheduling requirements, the trace data reveals vital…

The Cortex-M0 is an ultra low power 32-bit ARM Cortex-M microcontroller targeted for various nano-scale embedded applications. Retargetting printf allows directing output from the standard C library printf function to a custom destination like UART, LCD display or other peripherals instead of default semihosting console. This enables printing messages directly from C programs running on…

It can be frustrating when a Cortex-M0+ processor seems to hang or freeze during operation. One common situation where this occurs is when the processor hangs on return from a function call. There are several potential reasons why a Cortex-M0+ may hang on return, along with some steps you can take to debug and resolve…

Yes, it is possible to copy the vector table from flash to SRAM, remap the SRAM to address 0x0, and have interrupts fetch vector addresses from SRAM instead of flash. This can provide performance benefits by reducing flash access latency during interrupt handling. The key steps are: Overview of Vector Table and Interrupts On ARM…