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remove the support libraries for efm32

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i don't plan to extend or support them, and they'll just grow stale
This commit is contained in:
chrysn
2012-09-15 01:29:31 +02:00
parent 50b3c92d7f
commit 4a6f4c0f7d
35 changed files with 0 additions and 3746 deletions
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97
examples/efm32/tinygecko/Makefile.include
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##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
## Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
## Copyright (C) 2012 chrysn <chrysn@fsfe.org>
##
## 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/>.
##
PREFIX ?= arm-none-eabi
#PREFIX ?= arm-elf
CC = $(PREFIX)-gcc
LD = $(PREFIX)-gcc
OBJCOPY = $(PREFIX)-objcopy
OBJDUMP = $(PREFIX)-objdump
GDB = $(PREFIX)-gdb
# Uncomment this line if you want to use the installed (not local) library.
#TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX)
TOOLCHAIN_DIR = ../../../../..
CFLAGS += -Os -g -Wall -Wextra -I$(TOOLCHAIN_DIR)/include \
-fno-common -mcpu=cortex-m3 -mthumb -msoft-float -MD\
-D$(FAMILY)
LDSCRIPT ?= ${TOOLCHAIN_DIR}/lib/efm32/tinygecko/$(MCU).ld
LDFLAGS += -lc -lnosys -L$(TOOLCHAIN_DIR)/lib/efm32/tinygecko \
-T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections \
-mthumb -march=armv7 -mfix-cortex-m3-ldrd -msoft-float
OBJS += $(BINARY).o
# Be silent per default, but 'make V=1' will show all compiler calls.
ifneq ($(V),1)
Q := @
NULL := 2>/dev/null
else
LDFLAGS += -Wl,--print-gc-sections
endif
.SUFFIXES: .elf .bin .hex .srec .list .images
.SECONDEXPANSION:
.SECONDARY:
all: images
images: $(BINARY).images
flash: $(BINARY).flash
%.images: %.bin %.hex %.srec %.list
@#echo "*** $* images generated ***"
%.bin: %.elf
@#printf " OBJCOPY $(*).bin\n"
$(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin
%.hex: %.elf
@#printf " OBJCOPY $(*).hex\n"
$(Q)$(OBJCOPY) -Oihex $(*).elf $(*).hex
%.srec: %.elf
@#printf " OBJCOPY $(*).srec\n"
$(Q)$(OBJCOPY) -Osrec $(*).elf $(*).srec
%.list: %.elf
@#printf " OBJDUMP $(*).list\n"
$(Q)$(OBJDUMP) -S $(*).elf > $(*).list
%.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/efm32/tinygecko/libopencm3_efm32tinygecko.a
@#printf " LD $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(LD) -o $(*).elf $(OBJS) -lopencm3_efm32tinygecko $(LDFLAGS)
%.o: %.c Makefile
@#printf " CC $(subst $(shell pwd)/,,$(@))\n"
$(Q)$(CC) $(CFLAGS) -o $@ -c $<
clean:
$(Q)rm -f *.o
$(Q)rm -f *.d
$(Q)rm -f *.elf
$(Q)rm -f *.bin
$(Q)rm -f *.hex
$(Q)rm -f *.srec
$(Q)rm -f *.list
.PHONY: images clean
-include $(OBJS:.o=.d)

29
examples/efm32/tinygecko/efm32-tg-stk3300/Makefile.include
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##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2012 chrysn <chrysn@fsfe.org>
##
## 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/>.
##
MCU = EFM32TG840F32
FAMILY = TINYGECKO
EACOMMANDER = ~/energymicro/energymicro/eACommander.sh
include $(dir $(lastword $(MAKEFILE_LIST)))../Makefile.include
upload: $(BINARY).bin
# eacommander is just as nonfree as jlink.sh, but much less of a hasle
$(EACOMMANDER) --flash $< --verify --mode mcu --address 0 --reset

9
examples/efm32/tinygecko/efm32-tg-stk3300/README
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=========================
EFM32-TG-STK3300 Examples
=========================
Examples in this directory are designed to be run on the Energy Micro EFM32
Tiny Gecko Starter Kit, which is based on the EFM32TG840F32 MCU, has an onboard
USB debug and power management interface, and a bunch of peripherials built in
that demonstrate the chip's low power capabilities (LED, LCD display, light
sensor, touch slider, LC sensor, push buttons).

23
examples/efm32/tinygecko/efm32-tg-stk3300/lcd_demo/Makefile
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##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
## Copyright (C) 2012 chrysn <chrysn@fsfe.org>
##
## 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 = lcd_demo
include ../Makefile.include

8
examples/efm32/tinygecko/efm32-tg-stk3300/lcd_demo/README
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=========================================
EFM32-TG-STK3300 Examples LCD Demo README
=========================================
This is an example on how to use the LCD peripherial on Energy Micro Tiny Gecko
chips.
It's intended for the EFM32-TG-STK3300 eval board.

76
examples/efm32/tinygecko/efm32-tg-stk3300/lcd_demo/generate_lcd_mapping.py
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#!/usr/bin/env python
import yaml
class Font(dict):
def __init__(self, letterdict):
for (k, v) in letterdict.items():
self[k] = set(v.split())
class Display(object):
def __init__(self, data):
self.mapping = {}
for c, segs in enumerate(data['coms']):
for s, name in enumerate(segs):
self.mapping[name] = (c, s)
def render_text(self, text, symbols, font):
cursor = 1
segments = set()
for letter in text:
if letter == '.':
segments.add("a%s_dp"%(cursor-1))
elif letter == ':':
segments.add("a%s_colon"%(cursor-1))
elif letter in font:
for segment in font[letter]:
segments.add("a%s_%s"%(cursor, segment))
cursor += 1
for s in symbols:
segments.add(s)
coms = {}
for segment in segments:
com, seg = self.mapping[segment]
coms[com] = coms.get(com, 0) | (1<<seg)
return coms
def main():
data = yaml.load(open("lcd_mapping.yaml"))
d = Display(data)
text = "{FNORD}"
symbols = ['gecko']
f = Font({
'-': 'g1 g2',
'A': 'e f a b c g1 g2',
'C': 'a f e d',
'D': 'a b c d i l',
'E': 'a f g1 g2 e d',
'F': 'a f g1 g2 e',
'H': "f b g1 g2 e c",
'I': "i l a d",
'L': 'f e d',
'M': 'e f h j b c',
'N': 'e f h m c b',
'O': 'a f e d c b',
'R': 'a e f g1 j m',
'T': 'i l a',
'U': 'f e d c b',
'[': 'a d e f',
']': 'a b c d',
'{': 'a d k h g1',
'}': 'a j g2 m d',
})
for com, data in d.render_text(text, symbols, f).items():
print "set_bank(%d, %#08.0x);"%(com, data)
# with open('lcd_mapping.c', 'w') as outfile:
# for symbol in data['symbols']:
if __name__ == "__main__":
main()

130
examples/efm32/tinygecko/efm32-tg-stk3300/lcd_demo/lcd_demo.c
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 chrysn <chrysn@fsfe.org>
*
* 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/>.
*/
/** @file
* Demo of the LCD display aboard the EFM32-TG-STK330 eval board.
*/
#include <libopencm3/efm32/tinygecko/cmu.h>
#include <libopencm3/efm32/tinygecko/gpio.h>
#include <libopencm3/efm32/tinygecko/lcd.h>
#include "../lightswitch/lightswitch-common.c"
void led_toggle(void) { gpio_toggle(GPIO_PD, GPIO7); }
void delay(void)
{
int x;
/* Start up delay until we mess with clock stuff, so the debugger can catch up. */
for(x = 0; x < 10000000; ++x) led_on();
}
void lcd_init(void)
{
/* LCD is a LE module. We're constantly powered on for now, so using
* HFCORECLK/2 */
CMU_HFCORECLKEN0 |= CMU_HFCORECLKEN0_LE;
CMU_LFCLKSEL = (CMU_LFCLKSEL & ~CMU_LFCLKSEL_LFA_MASK) | CMU_LFCLKSEL_LFA_HFCORECLKLEDIV2;
/* We need to get this down to reasonable 100Hz from 14MHz, 7MHz at
* LFACLK, 70kHz after LFA prescaler, 10kHz after FDIV. Octaplexing
* brings us down to about 500Hz. */
CMU_LFAPRESC0 |= CMU_LFAPRESC0_LCD_DIV128;
CMU_LCDCTRL |= CMU_LCDCTRL_FDIV_MASK; /* factor 7+1 */
/* If we don't wait for the prescaler to become ready, the "Do it" step
* won't pass. */
while (CMU_SYNCBUSY & CMU_SYNCBUSY_LFAPRESC0);
CMU_LFACLKEN0 |= CMU_LFACLKEN0_LCD;
while (CMU_SYNCBUSY & CMU_SYNCBUSY_LFACLKEN0);
/* Voltage is around 3.3V anyway, we don't need voltage boosting,
* leaving it disabled. I don't fully understand the implications of
* biasing yet, but it seems like he more biased the better, and will
* just affect frame rate negatively. */
LCD_DISPCTRL = (LCD_DISPCTRL & ~(LCD_DISPCTRL_BIAS_MASK | LCD_DISPCTRL_MUX_MASK)) | LCD_DISPCTRL_BIAS_ONEFOURTH | LCD_DISPCTRL_MUX_OCTAPLEX;
/* Segments default to disabled, enable the 20 relevant ones */
LCD_SEGEN = ~(~0<<5);
/* Do it */
LCD_CTRL |= LCD_CTRL_EN;
while (LCD_SYNCBUSY & LCD_SYNCBUSY_CTRL) led_off();
led_on();
}
void set_bank(u8 com, u32 data)
{
switch(com)
{
case 0: LCD_SEGD0L = data; break;
case 1: LCD_SEGD1L = data; break;
case 2: LCD_SEGD2L = data; break;
case 3: LCD_SEGD3L = data; break;
case 4: LCD_SEGD4L = data; break;
case 5: LCD_SEGD5L = data; break;
case 6: LCD_SEGD6L = data; break;
case 7: LCD_SEGD7L = data; break;
}
}
int main(void)
{
u8 active_bit = 0;
u8 active_com = 0;
gpio_setup();
// delay();
lcd_init();
/* "{FNORD}" with a gecko as generated by current generate_lcd_mapping.py */
set_bank(0, 0x000a00);
set_bank(1, 0x0031cb);
set_bank(2, 0x004622);
set_bank(3, 0x0012a8);
set_bank(4, 0x00481a);
set_bank(5, 0x001140);
set_bank(6, 0x004642);
set_bank(7, 0x0051ac);
while(1)
{
if (pb0_get())
{
while(pb0_get());
set_bank(active_com, ~0);
active_bit = (active_bit + 1) % 21; /* one more to see where 0 is */
set_bank(active_com, ~(1<<active_bit));
}
if (pb1_get())
{
while(pb1_get());
set_bank(active_com, ~0);
active_com = (active_com + 1) % 9; /* one more to see where 0 is */
set_bank(active_com, ~(1<<active_bit));
}
led_toggle();
}
}

192
examples/efm32/tinygecko/efm32-tg-stk3300/lcd_demo/lcd_mapping.yaml
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description:
LCD segment layout for the EFM32TG_STK3300 kit.
Determined by trial and error.
The digit display is called D1..D4 left to right, the alphanumerics
A1..A7.
The 7 segment display bars are labeled a..g from top cw with g being
the last in the center.
The 14 segment display bars are labelled a..f as with 7-segment, g1
and g2 the parts of 7-segment's g from left to right, and then h, i,
j left to right top parts, and k, l, m left to right bottom parts.
(Labelling according to the 7 segment display Wikipedia article; for 14,
found in German Wikipedia.)
Sectors start at the top, CCW.
Rings are numbered from the outside startin at 0, the dot in the middle
being 4.
symbols: [efm, antenna, celsius, fahrenheit]
coms:
-
- sector_0
- sector_1
- sector_2
- sector_3
- sector_4
- sector_5
- sector_6
- sector_7
- efm
- a5_a
- a4_colon
- a6_a
- antenna
- battery_outline
- celsius
- fahrenheit
- battery_1
- battery_0
- battery_2
- ring0
-
- gecko
- a1_a
- a1_b
- a2_a
- a2_b
- a3_a
- a3_b
- a4_a
- a4_b
- a5_h
- a5_b
- a6_h
- a6_b
- a7_a
- a7_b
- d4_d
- d3_d
- d2_d
- d1_d
- ring1
-
- lock_closed
- a1_h
- a1_j
- a2_h
- a2_j
- a3_h
- a3_j
- a4_h
- a4_j
- a5_f
- a5_j
- a6_f
- a6_j
- a7_h
- a7_j
- d4_c
- d3_c
- d2_c
- d1_c
- ring3
-
- a_minus
- a1_f
- a1_i
- a2_f
- a2_i
- a3_f
- a3_i
- a4_f
- a4_i
- a5_g1
- a5_i
- a6_g1
- a6_i
- a7_f
- a7_i
- d4_e
- d3_e
- d2_e
- d1_e
- lock_open
-
- a2_colon
- a1_g1
- a1_g2
- a2_g1
- a2_g2
- a3_g1
- a3_g2
- a4_g1
- a4_g2
- a5_l
- a5_g2
- a6_l
- a6_g2
- a7_g1
- a7_g2
- d4_g
- d3_g
- d2_g
- d1_g
- d2_dp
-
- a2_dp
- a1_l
- a1_c
- a2_l
- a2_c
- a3_l
- a3_c
- a4_l
- a4_c
- a5_k
- a5_c
- a6_k
- a6_c
- a7_l
- a7_c
- d4_b
- d3_b
- d2_b
- d1_b
- d2_dp
-
- a4_dp
- a1_k
- a1_m
- a2_k
- a2_m
- a3_k
- a3_m
- a4_k
- a4_m
- a5_e
- a5_m
- a6_e
- a6_m
- a7_k
- a7_m
- d4_f
- d3_f
- d2_f
- d1_f
- ring4
-
- a1_dp
- a1_e
- a1_d
- a2_e
- a2_d
- a3_e
- a3_d
- a4_e
- a4_d
- a4_dp
- a5_d
- a5_dp
- a6_d
- a7_e
- a7_d
- d4_a
- d3_a
- d2_a
- d1_a
- ring2

22
examples/efm32/tinygecko/efm32-tg-stk3300/lightswitch/Makefile
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##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2012 chrysn <chrysn@fsfe.org>
##
## 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 = lightswitch
include ../Makefile.include

13
examples/efm32/tinygecko/efm32-tg-stk3300/lightswitch/README
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============================================
EFM32-TG-STK3300 Examples lightswitch README
============================================
This is a small example program for GPIO input and output, and how the device
can be configured to use minimal power (although the example is merely
scratching the surface of what is possible powersaving-wise).
It's intended for the EFM32-TG-STK3300 eval board. It turn the User LED on when
PB0 is pressed, and off when PB1 is pressed.
Various implementations are offered (-busywait, -interrupt), and can configured
in lightswitch.c.

40
examples/efm32/tinygecko/efm32-tg-stk3300/lightswitch/lightswitch-busywait.c
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 chrysn <chrysn@fsfe.org>
*
* 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/efm32/tinygecko/irq.h>
#include <libopencm3/efm32/tinygecko/emu.h>
#define ISER0 MMIO32(0xE000E100)
#define ICER0 MMIO32(0xE000E180)
#define ISPR0 MMIO32(0XE000E200)
#define ICPR0 MMIO32(0XE000E280)
/** @file Simplest implementation of the lightswitch mechanism. */
int main(void)
{
gpio_setup();
while(1) {
if (pb0_get())
led_on();
if (pb1_get())
led_off();
};
}

88
examples/efm32/tinygecko/efm32-tg-stk3300/lightswitch/lightswitch-common.c
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 chrysn <chrysn@fsfe.org>
*
* 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/>.
*/
/** @file Common definitions used by all lightswitch implementations */
#include <libopencm3/efm32/tinygecko/gpio.h>
#include <libopencm3/efm32/tinygecko/cmu.h>
/** The User LED is connected to PD7 to the plus side of the LED according to
* t0011_efm32_tiny_gecko_stk_user_manual.pdf figures 16.2 and 16.3 (called
* UIF_LED0)
*/
#define LED_PORT GPIO_PD
#define LED_PIN GPIO7
#define BUTTON0_PORT GPIO_PD
#define BUTTON0_PORT_EXTIPSEL GPIO_EXTIPSEL_PORTD
#define BUTTON0_PIN_NUMBER 8
#define BUTTON0_PIN GPIO8
#define BUTTON1_PORT GPIO_PB
#define BUTTON1_PORT_EXTIPSEL GPIO_EXTIPSEL_PORTB
#define BUTTON1_PIN_NUMBER 11
#define BUTTON1_PIN GPIO11
void gpio_setup(void);
void led_on(void);
void led_off(void);
bool pb0_get(void);
bool pb1_get(void);
/**
* Enable GPIO, and set up port D7 as an output pin and D8 and B11 as input.
*/
void gpio_setup(void)
{
// Before GPIO works, according to d0034_efm32tg_reference_manual.pdf
// note in section 28.3.7, we'll have to enable GPIO in CMU_HFPERCLKEN0
CMU_HFPERCLKEN0 |= CMU_HFPERCLKEN0_GPIO;
gpio_set_mode(LED_PORT, GPIO_MODE_PUSHPULL, LED_PIN);
// Button PB0 is connected to pin PD8 and pulled low when pushed,
// Botton PB1 to pin PB11 (sources as for LED). Pullups and debouncing
// are alreay in place in hardware, so no filtering or pullup is
// needed.
gpio_set_mode(BUTTON0_PORT, GPIO_MODE_INPUT, BUTTON0_PIN);
gpio_set_mode(BUTTON1_PORT, GPIO_MODE_INPUT, BUTTON1_PIN);
}
void led_on(void)
{
gpio_set(LED_PORT, LED_PIN);
}
void led_off(void)
{
gpio_clear(LED_PORT, LED_PIN);
}
bool pb0_get(void)
{
return !gpio_get(GPIO_PD, GPIO8);
}
bool pb1_get(void)
{
return !gpio_get(GPIO_PB, GPIO11);
}

71
examples/efm32/tinygecko/efm32-tg-stk3300/lightswitch/lightswitch-interrupt.c
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@@ -1,71 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 chrysn <chrysn@fsfe.org>
*
* 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/efm32/tinygecko/irq.h>
#include <libopencm3/efm32/tinygecko/emu.h>
#define ISER0 MMIO32(0xE000E100)
void interrupt_setup()
{
// These are the ports the pin interrupts for 8 and 11 are to be
// configured to, and they should trigger on falling edge.
GPIO_EXTIPSELH = (BUTTON0_PORT_EXTIPSEL << ((BUTTON0_PIN_NUMBER-8)*4)) |
(BUTTON1_PORT_EXTIPSEL << ((BUTTON1_PIN_NUMBER-8)*4));
GPIO_EXTIFALL = BUTTON0_PIN | BUTTON1_PIN;
// Enable interrupts on the GPIO side
GPIO_INSENSE = GPIO_INSENSE_INT;
GPIO_IEN = BUTTON0_PIN | BUTTON1_PIN;
// Enable GPIO interrupts in NVIC
ISER0 = (1<<IRQ_GPIO_EVEN) | (1<<IRQ_GPIO_ODD);
}
int main(void)
{
gpio_setup();
interrupt_setup();
while(1) {
emu_sleep_em1();
};
}
void gpio_even_isr()
{
// Clearing the GPIO interrupt pending register. While the NVIC
// interrupt pending register gets cleared automatically once it jumps
// here, the pin's pending state has to be cleared explicitly.
// (Dispatch to different subroutines for different even pins that
// trigger an interrupt would happen here.)
GPIO_IFC = BUTTON0_PIN;
led_on();
}
void gpio_odd_isr()
{
// See gpio_even_isr.
GPIO_IFC = BUTTON1_PIN;
led_off();
}

30
examples/efm32/tinygecko/efm32-tg-stk3300/lightswitch/lightswitch.c
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@@ -1,30 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 chrysn <chrysn@fsfe.org>
*
* 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/>.
*/
/** @file
* Example for switching the User LED of the EFM32-TG-STK330 eval board on and
* off using the buttons.
*/
#include "lightswitch-common.c"
/** Change this include to -busywait, -interrupt, or -prs (not implemented
* yet). The overall behavior will not change, but different implementations
* will be used. */
#include "lightswitch-busywait.c"

23
examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/Makefile
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@@ -1,23 +0,0 @@
##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
## Copyright (C) 2012 chrysn <chrysn@fsfe.org>
##
## 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
include ../Makefile.include

9
examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/README
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@@ -1,9 +0,0 @@
==========================================
EFM32-TG-STK3300 Examples miniblink README
==========================================
This is the smallest-possible example program using libopencm3.
It's intended for the EFM32-TG-STK3300 eval board. It should blink
the user LED on the board.

71
examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/miniblink.c
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@@ -1,71 +0,0 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2012 chrysn <chrysn@fsfe.org>
*
* 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/efm32/tinygecko/gpio.h>
#include <libopencm3/efm32/tinygecko/cmu.h>
void led_setup(void);
void led_toggle(void);
/** @file
* Minimal example for making the User LED of the EFM32-TG-STK330 eval board blink.
*/
/**
* Toggle the User LED in an infinite loop, with time between the toggling
* determined by a busy loop stupidly counting up.
*/
int main(void)
{
int x;
led_setup();
while(1) {
for(x = 0; x < 200000; ++x) asm("mov r0,r0"); /* no-op, prevent compiler from optimizing this away */
led_toggle();
};
}
/**
* Enable GPIO, and set up port D7 as an output pin.
*/
void led_setup(void)
{
// Before GPIO works, according to d0034_efm32tg_reference_manual.pdf
// note in section 28.3.7, we'll have to enable GPIO in CMU_HFPERCLKEN0
CMU_HFPERCLKEN0 |= CMU_HFPERCLKEN0_GPIO;
// The User LED is connected to PD7 to the plus side of the LED
// according to t0011_efm32_tiny_gecko_stk_user_manual.pdf figures 16.2
// and 16.3 (called UIF_LED0)
gpio_set_mode(GPIO_PD, GPIO_MODE_PUSHPULL, GPIO7);
// GPIO_PD_MODEL = GPIO_MODE_PUSHPULL<<(7*4);
}
void led_toggle(void)
{
gpio_toggle(GPIO_PD, GPIO7);
// GPIO_PD_DOUTTGL = 1<<7;
}