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main.c
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133 lines (114 loc) · 4.46 KB
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/**************************************************************************/
/*!
@file main.c
@section LICENSE
Software License Agreement (BSD License)
Copyright (c) 2013, K. Townsend (microBuilder.eu)
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holders nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**************************************************************************/
#include <stdio.h>
#include "LPC8xx.h"
#include "gpio.h"
#include "mrt.h"
#include "uart.h"
#if defined(__CODE_RED)
#include <cr_section_macros.h>
#include <NXP/crp.h>
__CRP const unsigned int CRP_WORD = CRP_NO_CRP ;
#endif
#define LED_LOCATION (2)
/* This define should be enabled if you want to */
/* maintain an SWD/debug connection to the LPC810, */
/* but it will prevent you from having access to the */
/* LED on the LPC810 Mini Board, which is on the */
/* SWDIO pin (PIO0_2). */
// #define USE_SWD
void configurePins()
{
/* Enable SWM clock */
// LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 7); // this is already done in SystemInit()
/* Pin Assign 8 bit Configuration */
/* U0_TXD */
/* U0_RXD */
LPC_SWM->PINASSIGN0 = 0xffff0004UL;
/* Pin Assign 1 bit Configuration */
#if !defined(USE_SWD)
/* Pin setup generated via Switch Matrix Tool
------------------------------------------------
PIO0_5 = RESET
PIO0_4 = U0_TXD
PIO0_3 = GPIO - Disables SWDCLK
PIO0_2 = GPIO (User LED) - Disables SWDIO
PIO0_1 = GPIO
PIO0_0 = U0_RXD
------------------------------------------------
NOTE: SWD is disabled to free GPIO pins!
------------------------------------------------ */
LPC_SWM->PINENABLE0 = 0xffffffbfUL;
#else
/* Pin setup generated via Switch Matrix Tool
------------------------------------------------
PIO0_5 = RESET
PIO0_4 = U0_TXD
PIO0_3 = SWDCLK
PIO0_2 = SWDIO
PIO0_1 = GPIO
PIO0_0 = U0_RXD
------------------------------------------------
NOTE: LED on PIO0_2 unavailable due to SWDIO!
------------------------------------------------ */
LPC_SWM->PINENABLE0 = 0xffffffb3UL;
#endif
}
int main(void)
{
/* Initialise the GPIO block */
gpioInit();
/* Initialise the UART0 block for printf output */
uart0Init(115200);
/* Configure the multi-rate timer for 1ms ticks */
mrtInit(__SYSTEM_CLOCK/1000);
/* Configure the switch matrix (setup pins for UART0 and GPIO) */
configurePins();
/* Set the LED pin to output (1 = output, 0 = input) */
#if !defined(USE_SWD)
LPC_GPIO_PORT->DIR0 |= (1 << LED_LOCATION);
#endif
while(1)
{
#if !defined(USE_SWD)
/* Turn LED Off by setting the GPIO pin high */
LPC_GPIO_PORT->SET0 = 1 << LED_LOCATION;
mrtDelay(500);
/* Turn LED On by setting the GPIO pin low */
LPC_GPIO_PORT->CLR0 = 1 << LED_LOCATION;
mrtDelay(500);
#else
/* Just insert a 1 second delay */
mrtDelay(1000);
#endif
/* Send some text (printf is redirected to UART0) */
printf("Hello, LPC810!\n\r");
}
}