Reducing microcontroller code size isn’t ease task, but what if you want resulting code to fit your available memory… Minimizing microcontroller code size can be done in two ways: Firs is using compilers optimization feature by code size. This optimization is very dangerous. Your optimized code may not work as supposed to because compiler may [...]
C compilers are getting more and more advanced, but there is always a trade off made between speed and code size. Compiled code can be faster or smaller but not both. So you have to choose which part is more important speed or code size. The Increase of microcontroller code efficiency can be done in [...]
This is simple led blinking routine using my development board. The compiler I used was WINARM. I like this compiler because its free and adaptation is easy while the same functionality is in WINAVR. This simple test just blinks pin 16 of port 0. This I used when I first got to know ARM microcontroller. [...]
Royal Philips Electronics introduced the LPC2800 series – the industry’s most advanced ARM-based Hi-Speed USB microcontrollers on the market. The Philips LPC2800 is the first ARM7 MCU to deliver USB 2.0 device capabilities with maximum standard compliance and an on-chip Hi-Speed 480 Mbits/sec transceiver, and the first to enable single battery cell operation. These unique [...]
The development Software Keil for architecture ARM7 TDMI support the following devices ARM7: Atmel, Philips and Analog Devices, Sharp, OKI, ST Microelectronics. Instrument for ARM consist of the following parts: – CAARM Compiler/Assembler Kit Contains AARM Assembler, ARM Utilities, CARM Compiler, LARM Linker/Locator and the integrated medium of the development of Вµ.Vision IDE, which accomplishes [...]
In this article you’ll find some information about how to configure GNUARM toolset for compiling ARM7 microcontrollers. GNUARM is the open source toolset for ARM7 MCUs. It has GCC compiller and debugger. Our purpose now is to set up tools in Windows environment and compile one project. First of all download compiled toolset from http://www.gnuarm.com: [...]
After ARM mini board for LPC2148 is created its time to develop development board. I want to make board as universal as possible. So I decided to put I2C, SPI, COM and JTAG on board. I decided to use external voltage adapter as there is needed 5V and 3.3V DC sources. For my experiments I [...]
One day I’ve got ARM LPC2148 chip in my hands. The Philips LPC2148 is an ARM7TDMI-S based high-performance 32-bit RISC Microcontroller with Thumb extensions 512KB on-chip Flash ROM with In-System Programming (ISP) and In-Application Programming (IAP), 32KB RAM, Vectored Interrupt Controller, Two 10bit ADCs with 14 channels, USB 2.0 Full Speed Device Controller, Two UARTs, [...]
