Microcontrôleurs NXP LPC21XX/LPC22XX - Implémentation

(ref.004748A)

4 jours

Objectifs

  • The course details the hardware implementation of the LPC2294 microcontrollers
  • The boot sequence and the clocking are explained
  • The training helps to become familiar with the development environment chosen by the customer
  • Practical labs on integrated peripherals are based on I/O functions provided by NXP
  • The course focuses on the low level programming of the ARM7TDMI core
  • The course provides examples of internal peripheral software driversThis course

Partenaires

nxpARM ATC

Prérequis

  • A basic understanding of microprocessors and microcontrollers is recommended
  • A basic understanding of digital logic or hardware / ASIC design issues would be useful but not essential
  • A basic understanding of assembler or C programming would be useful but not essential

Configurations

  • Pour les formations sur site, les travaux pratiques peuvent etre effectués sous les environnements suivants : Keil µVision ou IAR Workbench

Contenu

ARM core based architecture

ARM7 local bus

AMBA AHB/APB internal buses

The main three blocks : platform, core and input / output peripherals

APB Bridges

Memory mapping, internal flash (2294) and SRAM

Presentation of the core, architecture and programming model

Operating modes : user, system, super, IRQ, FIQ, undef and abort

Pipeline, calculation of the CPI

Effects of branches and exceptions on the performance

ALU data path

Parameterizing the RVDS linker to define sections

Branch instructions, implementation of C call and return statements, long branch veneers

ARM vs Thumb instruction sets, interworking

Programming example : Highlighting the usage of veneers to perform a transition during the function call (Thumb-to-ARM or ARM-to-Thumb interworking)

ARM instruction set

Inline barrel shifter

Access to memory-mapped locations, addressing modes

Arithmetical and logic instructions

Thumb instruction set, highlighting restrictions with regard to ARM instruction set

Compiler hints and tips, optimisations supported by

Stack management

Benefits of condition set capability in ARM state

C-to-Assembly interface, ATPCS specification

Programming example : Development of an assembly function that is called from a C function

Programming example : Explaining the steps from reset to main

Reset

FIQ vs IRQ

Exception return instructions

Programming example : Implementing the SWI exception

Latency estimation, impact of load and store multiple instructions

Organization of the handler table, priority decoder, pre-emption and nesting

ISR header and footer routines

Development of a generic exception handler

Programming example : Implementing a task scheduler that saves the state of a task when an interrupt event occurs

JTAG interface

Debug facilities, hardware breakpoint

Executing code from RAM to take benefit of software breakpoints

Assigning a priority to each interrupt source

Steering external interrupts and local interrupts to either the core FIQ or IRQ

Developing a generic interrupt handler performing nesting according to peripheral priorities defined by the user

Integrated timers

Using timers to understand the operation of the VIC

Programming example : Implementing nesting by using 2 timers having a different priority level

Pin connect block

Clocking

Reset and wake-up timer

Low power modes

Watchdog timer

Real-Time clock

Organization

Erase sequence

Program sequence

In system programming via serial port

On-chip bootloader

Address decoding

Chip-select registers

Parameterizing the memory bank registers to support external burst flash

I2C basics

I2C controller

UART controller

SPI and SSP interfaces

CAN protocol basics

CAN controller (2294)

Programming example : demonstration of drivers developed by MVD will be done at the end of the course (they are delivered in source format to attendees)

Notes

  • Les supports de cours seront fournis sur papier à chaque participant pendant la formation