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LPCXPresso for ARM Cortex-M3 LPC1769 processor
rkh_bunner.jpg

Running Blinky RKH demo on NXP ARM Cortex-M3 demostration board LPCXpresso LPC1769. This is a guide to how to setup and use the demo board to evaluate the RKH framework. It assumes a prior knowledge on board features and development environment.

Project organization

\-codered
\-prj - Blinky LPCXpresso Workspace.
| +-.metadata - Workspace internal directory.
| \-blinky - Workspace internal directory.
| | | .cproject - Workspace internal file.
| | | .project - Workspace internal file.
| | +-.settings - Workspace internal directory.
| | \-src - Blinky project CPU dependent files.
| | \-bsp
| | +-lpc17xx - Peripherals inicialization, ISR's and time stamp.
| | bsp.c - Board support package source file.
| | bsp.h - Board support package header file.
| | gpio.h - Routines to handle GPIO's.
| | readme.txt - This guide file.
| | uart.c - Routines to handle serial port.
| | uart.h - Serial driver prototipes.

Blinky demo BSP

  • Blink state is shown through target board LED2 on P0[22].
  • Tracing info through UART0_TXD assigned to P0[2] on J6.21 connector at 38400 8N1. To interface the demo board with Trazer PC software, you may use the simple circuit shown below to convert UART0_TXD signal to RS232 levels.

LPCXpresso expansion Connector

+3.3V
|
J6.28 [VIO] o--------------x
|
|
10K |<
J6.21 [TXD0] >---/\/\/\---| BC557
|\
| Female DB9
|
+-------------<-o [TXD] Pin-3
|
'---/\/\/\---->-o [RXD] Pin-2 --> To PC Serial COM
10K
J6.1 [GND] o--------------x---------------o [GND] Pin-5
|
GND