EMTime/libopencm3
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

lm4f: Add exammple for Stellaris Launchpad board

Browse Source 
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Alexandru Gagniuc
2012-11-22 12:05:33 -06:00
parent 326c945b55
commit c02fba51a4
5 changed files with 292 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
examples/lm4f/stellaris-ek-lm4f120xl/miniblink/Makefile Normal file
View File

@@ -0,0 +1,25 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
##
## 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 = ../ek-lm4f120xl.ld
include ../../Makefile.include

9
examples/lm4f/stellaris-ek-lm4f120xl/miniblink/README Normal file
View File

@@ -0,0 +1,9 @@
------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
Flashes the Red, Green and Blue diodes on the board, in order.
RED controlled by PF1
Green controlled by PF3
Blue controlled by PF2

93
examples/lm4f/stellaris-ek-lm4f120xl/miniblink/miniblink.c Normal file
View File

@@ -0,0 +1,93 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2011 Gareth McMullin <gareth@blacksphere.co.nz>
* Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
*
* 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/>.
*/
/**
* \addtogroup Examples
*
* Flashes the Red, Green and Blue diodes on the board, in order.
*
* RED controlled by PF1
* Green controlled by PF3
* Blue controlled by PF2
*/
#include <libopencm3/lm4f/systemcontrol.h>
#include <libopencm3/lm4f/gpio.h>
void gpio_setup(void)
{
SYSTEMCONTROL_RCGC2 |= 0x20; /* Enable GPIOF in run mode. */
const u32 outpins = ((1<<3) | (1<<2) | (1<<1));
GPIO_DIR(GPIOF) |= outpins; /* Configure outputs. */
GPIO_DEN(GPIOF) |= outpins; /* Enable digital function on outputs. */
}
#define FLASH_DELAY 800000
int main(void)
{
int i;
gpio_setup();
/* Blink STATUS LED (PF0) on the board. */
while (1) {
/*
* Flash the Red diode
*/
gpio_set(GPIOF, GPIO1);
for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */
__asm__("nop");
gpio_clear(GPIOF, GPIO1);
for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */
__asm__("nop");
/*
* Flash the Green diode
*/
gpio_set(GPIOF, GPIO3);
for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */
__asm__("nop");
gpio_clear(GPIOF, GPIO3);
for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */
__asm__("nop");
/*
* Flash the Blue diode
*/
gpio_set(GPIOF, GPIO2);
for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */
__asm__("nop");
gpio_clear(GPIOF, GPIO2);
for (i = 0; i < FLASH_DELAY; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}