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lm3s: add LM3S811 eval board miniblink example

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The LM3S811-EVB miniblink example is a copy of the LM3S3748-EVB miniblink
example.  Modifications:

 - rename lm3s3748-evb.ld to lm3s811-evb.ld and change RAM and ROM sizes
 - amend Makefile to reference the lm3s811-evb.ld linker script
 - amend miniblink.c to use PC5 instead of PF0 for the LED GPIO
 - amend README to reference LM3S811-EVB instead of LM3S3748-EVB
This commit is contained in:
Leigh Brown
2013-09-17 12:21:48 +01:00
committed by Piotr Esden-Tempski
parent 4505fa1926
commit c0791cd4a7
4 changed files with 116 additions and 0 deletions
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31
examples/lm3s/lm3s811-evb/lm3s811-evb.ld Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for Luminary Micro (now TI) Stellaris LM3S811-EVB. */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x00000000, LENGTH = 64K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 8K
}
/* Include the common ld script. */
INCLUDE libopencm3_lm3s.ld

25
examples/lm3s/lm3s811-evb/miniblink/Makefile Normal file
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##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
BINARY = miniblink
LDSCRIPT = ../lm3s811-evb.ld
include ../../Makefile.include

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examples/lm3s/lm3s811-evb/miniblink/README Normal file
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------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This is the smallest-possible example program using libopencm3.
It's intended for the LuminaryMicro LM3S811-EVB.
It should blink the STATUS LED on the board.

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examples/lm3s/lm3s811-evb/miniblink/miniblink.c Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2011 Gareth McMullin <gareth@blacksphere.co.nz>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/lm3s/systemcontrol.h>
#include <libopencm3/lm3s/gpio.h>
static void gpio_setup(void)
{
SYSTEMCONTROL_RCGC2 |= 0x04; /* Enable GPIOC in run mode. */
GPIO_DIR(GPIOC) |= (1 << 5); /* Configure PC5 as output. */
GPIO_DEN(GPIOC) |= (1 << 5); /* Enable digital function on PC5. */
}
int main(void)
{
int i;
gpio_setup();
/* Blink STATUS LED (PC5) on the board. */
while (1) {
gpio_set(GPIOC, GPIO5);
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
gpio_clear(GPIOC, GPIO5);
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}