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authorchrysn2012-02-25 18:57:11 +0100
committerchrysn2012-02-25 23:22:37 +0100
commit2180a02e2f79b8ee77780ea11be188c0faaa8866 (patch)
tree835991491d74d9626cf362ff52b0bcfc6eed4886 /examples/efm32/tinygecko
parent2b3f07ee08c722f28cbf480dbcc5276707f78ec4 (diff)
first attempt at porting libopencm3 to energymicro
unless sources are explicitly given, the linker scripts and make files were copied over from the stm32/f1 port.
Diffstat (limited to 'examples/efm32/tinygecko')
-rw-r--r--examples/efm32/tinygecko/Makefile.include96
-rw-r--r--examples/efm32/tinygecko/efm32-tg-stk3300/Makefile.include25
-rw-r--r--examples/efm32/tinygecko/efm32-tg-stk3300/README9
-rw-r--r--examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/Makefile23
-rw-r--r--examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/README9
-rw-r--r--examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/miniblink.c72
6 files changed, 234 insertions, 0 deletions
diff --git a/examples/efm32/tinygecko/Makefile.include b/examples/efm32/tinygecko/Makefile.include
new file mode 100644
index 0000000..1ee8d49
--- /dev/null
+++ b/examples/efm32/tinygecko/Makefile.include
@@ -0,0 +1,96 @@
+##
+## 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 program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This program 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 General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program. 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 -DSTM32F1
+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)
+
diff --git a/examples/efm32/tinygecko/efm32-tg-stk3300/Makefile.include b/examples/efm32/tinygecko/efm32-tg-stk3300/Makefile.include
new file mode 100644
index 0000000..e707b65
--- /dev/null
+++ b/examples/efm32/tinygecko/efm32-tg-stk3300/Makefile.include
@@ -0,0 +1,25 @@
+##
+## This file is part of the libopencm3 project.
+##
+## Copyright (C) 2012 chrysn <chrysn@fsfe.org>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This program 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 General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program. If not, see <http://www.gnu.org/licenses/>.
+##
+
+MCU = EFM32TG840F32
+
+# Linker scripts are always relative to the current directory. This file is
+# intended for inclusion from example subdirectories, so the Makefile.include
+# meant here would be called ../Makefile.include relative to here.
+include ../../Makefile.include
diff --git a/examples/efm32/tinygecko/efm32-tg-stk3300/README b/examples/efm32/tinygecko/efm32-tg-stk3300/README
new file mode 100644
index 0000000..ffa3b59
--- /dev/null
+++ b/examples/efm32/tinygecko/efm32-tg-stk3300/README
@@ -0,0 +1,9 @@
+=========================
+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).
diff --git a/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/Makefile b/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/Makefile
new file mode 100644
index 0000000..a2e44dc
--- /dev/null
+++ b/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/Makefile
@@ -0,0 +1,23 @@
+##
+## This file is part of the libopencm3 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+## 2012 chrysn <chrysn@fsfe.org>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This program 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 General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program. If not, see <http://www.gnu.org/licenses/>.
+##
+
+BINARY = miniblink
+
+include ../Makefile.include
diff --git a/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/README b/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/README
new file mode 100644
index 0000000..d19e4fe
--- /dev/null
+++ b/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/README
@@ -0,0 +1,9 @@
+==========================================
+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.
+
diff --git a/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/miniblink.c b/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/miniblink.c
new file mode 100644
index 0000000..e19ba8f
--- /dev/null
+++ b/examples/efm32/tinygecko/efm32-tg-stk3300/miniblink/miniblink.c
@@ -0,0 +1,72 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ * 2012 chrysn <chrysn@fsfe.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+//#include <libopencm3/efm32/tinygecko/gpio.h>
+//
+//void gpio_setup(void)
+//{
+// /* Enable GPIOC clock. */
+// /* Manually: */
+// // RCC_APB2ENR |= RCC_APB2ENR_IOPCEN;
+// /* Using API functions: */
+// rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
+//
+// /* Set GPIO8 (in GPIO port C) to 'output push-pull'. */
+// /* Manually: */
+// // GPIOC_CRH = (GPIO_CNF_OUTPUT_PUSHPULL << (((8 - 8) * 4) + 2));
+// // GPIOC_CRH |= (GPIO_MODE_OUTPUT_2_MHZ << ((8 - 8) * 4));
+// /* Using API functions: */
+// gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
+// GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
+//}
+
+int main(void)
+{
+// int i;
+//
+// gpio_setup();
+//
+// /* Blink the LED (PC8) on the board. */
+// while (1) {
+// /* Manually: */
+// // GPIOC_BSRR = GPIO8; /* LED off */
+// // for (i = 0; i < 800000; i++) /* Wait a bit. */
+// // __asm__("nop");
+// // GPIOC_BRR = GPIO8; /* LED on */
+// // for (i = 0; i < 800000; i++) /* Wait a bit. */
+// // __asm__("nop");
+//
+// /* Using API functions gpio_set()/gpio_clear(): */
+// // gpio_set(GPIOC, GPIO8); /* LED off */
+// // for (i = 0; i < 800000; i++) /* Wait a bit. */
+// // __asm__("nop");
+// // gpio_clear(GPIOC, GPIO8); /* LED on */
+// // for (i = 0; i < 800000; i++) /* Wait a bit. */
+// // __asm__("nop");
+//
+// /* Using API function gpio_toggle(): */
+// gpio_toggle(GPIOC, GPIO8); /* LED on/off */
+// for (i = 0; i < 800000; i++) /* Wait a bit. */
+// __asm__("nop");
+// }
+//
+// return 0;
+ for(;;);
+}