stub adc on/off test code.
Needs a pot on PA0, should get the temperature input working as well.
This commit is contained in:
Karl Palsson
parent
0bcc5d5efd
commit
8d538b3935
8 changed files with 502 additions and 0 deletions
169
rules.mk
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169
rules.mk
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@ -0,0 +1,169 @@
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##
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## This file is part of the libopencm3 project.
|
||||
##
|
||||
## 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/>.
|
||||
##
|
||||
|
||||
# This version of rules.mk expects the following to be defined before
|
||||
# inclusion..
|
||||
### REQUIRED ###
|
||||
# OPENCM3_DIR - duh
|
||||
# OPENCM3_LIB - the basename, eg: opencm3_stm32f4
|
||||
# OPENCM3_DEFS - the target define eg: -DSTM32F4
|
||||
# ARCH_FLAGS - eg, -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16
|
||||
# (ie, the full set of cpu arch flags, _none_ are defined in this file)
|
||||
# PROJECT - will be the basename of the output elf, eg usb-gadget0-stm32f4disco
|
||||
# CFILES - basenames only, eg main.c blah.c
|
||||
# LDSCRIPT - full path, eg ../../examples/stm32/f4/stm32f4-discovery/stm32f4-discovery.ld
|
||||
#
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||||
### OPTIONAL ###
|
||||
# INCLUDES - fully formed -I paths, if you want extra, eg -I../shared
|
||||
# BUILD_DIR - defaults to bin, should set this if you are building multiarch
|
||||
# OPT - full -O flag, defaults to -Os
|
||||
# CSTD - defaults -std=c99
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||||
# CXXSTD - no default.
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||||
# OOCD_INTERFACE - eg stlink-v2
|
||||
# OOCD_TARGET - eg stm32f4x
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||||
# both only used if you use the "make flash" target.
|
||||
# OOCD_FILE - eg my.openocd.cfg
|
||||
# This overrides interface/target above, and is used as just -f FILE
|
||||
### TODO/FIXME/notes ###
|
||||
# No support for stylecheck.
|
||||
# No support for BMP/texane/random flash methods, no plans either
|
||||
# No support for magically finding the library.
|
||||
# C++ hasn't been actually tested with this..... sorry bout that. ;)
|
||||
# Second expansion/secondary not set, add this if you need them.
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||||
|
||||
BUILD_DIR ?= bin
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||||
OPT ?= -Os
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||||
CSTD ?= -std=c99
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|
||||
# Be silent per default, but 'make V=1' will show all compiler calls.
|
||||
# If you're insane, V=99 will print out all sorts of things.
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V?=0
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ifeq ($(V),0)
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||||
Q := @
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||||
NULL := 2>/dev/null
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||||
endif
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||||
|
||||
# Tool paths.
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||||
PREFIX ?= arm-none-eabi-
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||||
CC = $(PREFIX)gcc
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||||
LD = $(PREFIX)gcc
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||||
OBJCOPY = $(PREFIX)objcopy
|
||||
OBJDUMP = $(PREFIX)objdump
|
||||
OOCD ?= openocd
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||||
|
||||
OPENCM3_INC = $(OPENCM3_DIR)/include
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||||
|
||||
# Inclusion of library header files
|
||||
INCLUDES += $(patsubst %,-I%, . $(OPENCM3_INC) )
|
||||
|
||||
OBJS = $(CFILES:%.c=$(BUILD_DIR)/%.o)
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||||
|
||||
TGT_CPPFLAGS += -MD
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||||
TGT_CPPFLAGS += -Wall -Wundef $(INCLUDES)
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||||
TGT_CPPFLAGS += $(INCLUDES) $(OPENCM3_DEFS)
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||||
|
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TGT_CFLAGS += $(OPT) $(CSTD) -ggdb3
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TGT_CFLAGS += $(ARCH_FLAGS)
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||||
TGT_CFLAGS += -fno-common
|
||||
TGT_CFLAGS += -ffunction-sections -fdata-sections
|
||||
TGT_CFLAGS += -Wextra -Wshadow -Wno-unused-variable -Wimplicit-function-declaration
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TGT_CFLAGS += -Wredundant-decls -Wstrict-prototypes -Wmissing-prototypes
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||||
|
||||
TGT_CXXFLAGS += $(OPT) $(CXXSTD) -ggdb3
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TGT_CXXFLAGS += $(ARCH_FLAGS)
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||||
TGT_CXXFLAGS += -fno-common
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TGT_CXXFLAGS += -ffunction-sections -fdata-sections
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||||
TGT_CXXFLAGS += -Wextra -Wshadow -Wredundant-decls -Weffc++
|
||||
|
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TGT_LDFLAGS += -T$(LDSCRIPT) -L$(OPENCM3_DIR)/lib -nostartfiles
|
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TGT_LDFLAGS += $(ARCH_FLAGS)
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TGT_LDFLAGS += -specs=nano.specs
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TGT_LDFLAGS += -Wl,--gc-sections
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# OPTIONAL
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#TGT_LDFLAGS += -Wl,-Map=$(PROJECT).map
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ifeq ($(V),99)
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TGT_LDFLAGS += -Wl,--print-gc-sections
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endif
|
||||
|
||||
LDLIBS += -l$(OPENCM3_LIB)
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||||
# nosys is only in newer gcc-arm-embedded...
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LDLIBS += -specs=nosys.specs
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||||
#LDLIBS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
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||||
|
||||
# Burn in legacy hell fortran modula pascal yacc idontevenwat
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.SUFFIXES:
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.SUFFIXES: .c .h .o .cxx .elf .bin .list .lss
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||||
|
||||
# Bad make, never *ever* try to get a file out of source control by yourself.
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%: %,v
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%: RCS/%,v
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%: RCS/%
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%: s.%
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%: SCCS/s.%
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|
||||
all: $(PROJECT).elf $(PROJECT).bin
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flash: $(PROJECT).flash
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|
||||
$(LDSCRIPT):
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ifeq (,$(wildcard $(LDSCRIPT)))
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$(error Unable to find specified linker script: $(LDSCRIPT))
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endif
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|
||||
# Need a special rule to have a bin dir
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$(BUILD_DIR)/%.o: %.c
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||||
@printf " CC\t$<\n"
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@mkdir -p $(dir $@)
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$(Q)$(CC) $(TGT_CFLAGS) $(CFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $<
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||||
|
||||
$(BUILD_DIR)/%.o: %.cxx
|
||||
@printf " CXX\t$<\n"
|
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@mkdir -p $(dir $@)
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$(Q)$(CC) $(TGT_CXXFLAGS) $(CXXFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $<
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|
||||
$(PROJECT).elf: $(OBJS) $(LDSCRIPT)
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||||
@printf " LD\t$@\n"
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$(Q)$(LD) $(TGT_LDFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $@
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|
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%.bin: %.elf
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||||
@printf " OBJCOPY\t$@\n"
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$(Q)$(OBJCOPY) -O binary $< $@
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|
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%.lss: %.elf
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$(OBJDUMP) -h -S $< > $@
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%.list: %.elf
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$(OBJDUMP) -S $< > $@
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%.flash: %.elf
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@printf " FLASH\t$<\n"
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ifeq (,$(OOCD_FILE))
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$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
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-f target/$(OOCD_TARGET).cfg \
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-c "program $(*).elf verify reset exit" \
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$(NULL)
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else
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$(Q)$(OOCD) -f $(OOCD_FILE) \
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-c "program $(*).elf verify reset exit" \
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$(NULL)
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endif
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clean:
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rm -rf $(BUILD_DIR) $(PROJECT).{elf,bin} $(PROJECT).{list,lss,map}
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.PHONY: all clean flash
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-include $(OBJS:.o=.d)
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54
shared/trace.c
Normal file
54
shared/trace.c
Normal file
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@ -0,0 +1,54 @@
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#include <stdint.h>
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#include <libopencm3/cm3/common.h>
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#include <libopencm3/cm3/memorymap.h>
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#include <libopencm3/cm3/itm.h>
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#include "trace.h"
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void trace_send_blocking8(int stimulus_port, char c) {
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if (!(ITM_TER[0] & (1<<stimulus_port))) {
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return;
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}
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while (!(ITM_STIM8(stimulus_port) & ITM_STIM_FIFOREADY))
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;
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ITM_STIM8(stimulus_port) = c;
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}
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void trace_send8(int stimulus_port, char val) {
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if (!(ITM_TER[0] & (1<<stimulus_port))) {
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return;
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}
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ITM_STIM8(stimulus_port) = val;
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}
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void trace_send_blocking16(int stimulus_port, uint16_t val) {
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if (!(ITM_TER[0] & (1<<stimulus_port))) {
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return;
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}
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while (!(ITM_STIM16(stimulus_port) & ITM_STIM_FIFOREADY))
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;
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ITM_STIM16(stimulus_port) = val;
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}
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void trace_send16(int stimulus_port, uint16_t val) {
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if (!(ITM_TER[0] & (1<<stimulus_port))) {
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return;
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}
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ITM_STIM16(stimulus_port) = val;
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}
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void trace_send_blocking32(int stimulus_port, uint32_t val) {
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if (!(ITM_TER[0] & (1<<stimulus_port))) {
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return;
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}
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while (!(ITM_STIM32(stimulus_port) & ITM_STIM_FIFOREADY))
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;
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ITM_STIM32(stimulus_port) = val;
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}
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void trace_send32(int stimulus_port, uint32_t val) {
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if (!(ITM_TER[0] & (1<<stimulus_port))) {
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return;
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}
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ITM_STIM32(stimulus_port) = val;
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}
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30
shared/trace.h
Normal file
30
shared/trace.h
Normal file
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@ -0,0 +1,30 @@
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/*
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* trace support
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* Karl Palsson <karlp@tweak.net.au>
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*/
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#ifndef TRACE_H
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#define TRACE_H
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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void trace_send_blocking8(int stimulus_port, char c);
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void trace_send8(int stimulus_port, char c);
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void trace_send_blocking16(int stimulus_port, uint16_t val);
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void trace_send16(int stimulus_port, uint16_t val);
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void trace_send_blocking32(int stimulus_port, uint32_t val);
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void trace_send32(int stimulus_port, uint32_t val);
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#ifdef __cplusplus
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}
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#endif
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#endif /* TRACE_H */
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34
shared/trace_stdio.c
Normal file
34
shared/trace_stdio.c
Normal file
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/*
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* support for stdio output to a trace port
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* Karl Palsson, 2014 <karlp@remake.is>
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "trace.h"
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#ifndef STIMULUS_STDIO
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#define STIMULUS_STDIO 0
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#endif
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int _write(int file, char *ptr, int len);
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int _write(int file, char *ptr, int len)
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{
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int i;
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if (file == STDOUT_FILENO || file == STDERR_FILENO) {
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for (i = 0; i < len; i++) {
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if (ptr[i] == '\n') {
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trace_send_blocking8(STIMULUS_STDIO, '\r');
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}
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trace_send_blocking8(STIMULUS_STDIO, ptr[i]);
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}
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return i;
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}
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errno = EIO;
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return -1;
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}
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44
tests/adc-power/Makefile.stm32f4-disco
Normal file
44
tests/adc-power/Makefile.stm32f4-disco
Normal file
|
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@ -0,0 +1,44 @@
|
|||
##
|
||||
## This file is part of the libopencm3 project.
|
||||
##
|
||||
## 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/>.
|
||||
##
|
||||
|
||||
BOARD = stm32f4-disco
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PROJECT = adc-power-$(BOARD)
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BUILD_DIR = bin-$(BOARD)
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|
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SHARED_DIR = ../../shared
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||||
|
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CFILES = main-$(BOARD).c
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CFILES += adc-power.c
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||||
CFILES += trace.c trace_stdio.c
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||||
|
||||
VPATH += $(SHARED_DIR)
|
||||
|
||||
INCLUDES += $(patsubst %,-I%, . $(SHARED_DIR))
|
||||
|
||||
OPENCM3_DIR=../../libopencm3/
|
||||
|
||||
### This section can go to an arch shared rules eventually...
|
||||
LDSCRIPT = ../../../libopencm3/lib/stm32/f4/stm32f405x6.ld
|
||||
OPENCM3_LIB = opencm3_stm32f4
|
||||
OPENCM3_DEFS = -DSTM32F4
|
||||
FP_FLAGS ?= -mfloat-abi=hard -mfpu=fpv4-sp-d16
|
||||
ARCH_FLAGS = -mthumb -mcpu=cortex-m4 $(FP_FLAGS)
|
||||
#OOCD_INTERFACE = stlink-v2
|
||||
#OOCD_TARGET = stm32f4x
|
||||
OOCD_FILE = ../../openocd/openocd.stm32f4-disco.cfg
|
||||
|
||||
include ../../rules.mk
|
||||
94
tests/adc-power/adc-power.c
Normal file
94
tests/adc-power/adc-power.c
Normal file
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|
@ -0,0 +1,94 @@
|
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/**
|
||||
* Testing ADC power up and power down, for timing and actual on/off
|
||||
* Uses TIM6, because DWT_CYCCNT not available on cm0(+) :(
|
||||
* (And with no DWT, no ITM timestamping either, get a real mcu!)
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdint.h>
|
||||
#include <libopencm3/stm32/adc.h>
|
||||
#include <libopencm3/stm32/rcc.h>
|
||||
#include <libopencm3/stm32/timer.h>
|
||||
|
||||
#include "adc-power.h"
|
||||
|
||||
/* Everyone has tim6 right? */
|
||||
#define TIMER TIM6
|
||||
#define TIMER_RCC RCC_TIM6
|
||||
|
||||
// TODO - stick this in libopencm3?
|
||||
#define ARRAY_SIZE(a) (sizeof((a)) / sizeof((a)[0]))
|
||||
|
||||
|
||||
void adc_power_init(void)
|
||||
{
|
||||
/* Some basic ADC config, that we won't touch again */
|
||||
rcc_periph_clock_enable(RCC_ADC1);
|
||||
adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR_SMP_28CYC);
|
||||
#if 0
|
||||
// DANGER DANGER! doing this without DMA is dum.
|
||||
// but... we're busy polling, we should be right... right?
|
||||
// (dma across platforms is teh suck)
|
||||
adc_enable_scan_mode(ADC1);
|
||||
ADC_CR2 |= ADC_CR2_EOCS; // FIXME
|
||||
#else
|
||||
adc_disable_scan_mode(ADC1);
|
||||
#endif
|
||||
|
||||
/*
|
||||
* We're going to setup a timer to run at top speed, so... "fast"
|
||||
* but we don't actually care about the rate itself. We just
|
||||
* want to collect how many ticks it takes to enable and disable
|
||||
* the adc.
|
||||
*/
|
||||
rcc_periph_clock_enable(TIMER_RCC);
|
||||
timer_reset(TIMER);
|
||||
timer_set_prescaler(TIMER, 0);
|
||||
timer_enable_counter(TIMER);
|
||||
}
|
||||
|
||||
static uint16_t read_adc_naiive(uint8_t channel)
|
||||
{
|
||||
uint8_t channel_array[16];
|
||||
channel_array[0] = channel;
|
||||
adc_set_regular_sequence(ADC1, 1, channel_array);
|
||||
adc_start_conversion_regular(ADC1);
|
||||
while (!adc_eoc(ADC1));
|
||||
return adc_read_regular(ADC1);
|
||||
}
|
||||
|
||||
void adc_power_task_up(void) {
|
||||
TIM_CNT(TIMER) = 0;
|
||||
adc_power_on(ADC1);
|
||||
unsigned int td = TIM_CNT(TIMER);
|
||||
|
||||
/* just for kicks, let's time some sequences too....
|
||||
* I mean, we're going to do some conversions right? */
|
||||
adc_set_single_conversion_mode(ADC1);
|
||||
#if 0
|
||||
uint8_t channels[2] = { 0, 1 };
|
||||
adc_set_regular_sequence(ADC1, ARRAY_SIZE(channels), channels);
|
||||
TIM_CNT(TIMER) = 0;
|
||||
adc_start_conversion_regular(ADC1);
|
||||
while (!adc_eoc(ADC1));
|
||||
unsigned int v1 = adc_read_regular(ADC1);
|
||||
while (!adc_eoc(ADC1));
|
||||
unsigned int v2 = adc_read_regular(ADC1);
|
||||
unsigned int tconv = TIM_CNT(TIMER);
|
||||
#else
|
||||
TIM_CNT(TIMER) = 0;
|
||||
unsigned int v1 = read_adc_naiive(0);
|
||||
unsigned int v2 = read_adc_naiive(1);
|
||||
unsigned int tconv = TIM_CNT(TIMER);
|
||||
#endif
|
||||
|
||||
printf("ton: %u, tconv: %u, v1: %u, v2: %u\n", td, tconv, v1, v2);
|
||||
}
|
||||
|
||||
void adc_power_task_down()
|
||||
{
|
||||
TIM_CNT(TIMER) = 0;
|
||||
adc_power_off(ADC1);
|
||||
unsigned int td = TIM_CNT(TIMER);
|
||||
printf("toff in: %u\n", td);
|
||||
}
|
||||
25
tests/adc-power/adc-power.h
Normal file
25
tests/adc-power/adc-power.h
Normal file
|
|
@ -0,0 +1,25 @@
|
|||
/*
|
||||
* File: adc-power.h
|
||||
* Author: karlp
|
||||
*
|
||||
* Created on October 17, 2015, 12:19 AM
|
||||
*/
|
||||
|
||||
#ifndef ADC_POWER_H
|
||||
#define ADC_POWER_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
void adc_power_init(void);
|
||||
void adc_power_task_up(void);
|
||||
void adc_power_task_down(void);
|
||||
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* ADC_POWER_H */
|
||||
|
||||
52
tests/adc-power/main-stm32f4-disco.c
Normal file
52
tests/adc-power/main-stm32f4-disco.c
Normal file
|
|
@ -0,0 +1,52 @@
|
|||
/*
|
||||
* Oct 2015 Karl Palsson <karlp@tweak.net.au>
|
||||
*/
|
||||
|
||||
#include <errno.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include <libopencm3/cm3/nvic.h>
|
||||
#include <libopencm3/stm32/adc.h>
|
||||
#include <libopencm3/stm32/dac.h>
|
||||
#include <libopencm3/stm32/gpio.h>
|
||||
#include <libopencm3/stm32/rcc.h>
|
||||
#include <libopencm3/stm32/usart.h>
|
||||
|
||||
#include "trace.h"
|
||||
#include "adc-power.h"
|
||||
|
||||
#define LED_DISCO_GREEN_PORT GPIOD
|
||||
#define LED_DISCO_GREEN_PIN GPIO12
|
||||
|
||||
int main(void)
|
||||
{
|
||||
int i;
|
||||
int j = 0;
|
||||
rcc_clock_setup_hse_3v3(&hse_8mhz_3v3[CLOCK_3V3_168MHZ]);
|
||||
rcc_periph_clock_enable(RCC_GPIOD);
|
||||
printf("hi guys!\n");
|
||||
/* green led for ticking */
|
||||
gpio_mode_setup(LED_DISCO_GREEN_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE,
|
||||
LED_DISCO_GREEN_PIN);
|
||||
|
||||
rcc_periph_clock_enable(RCC_GPIOA);
|
||||
gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO0);
|
||||
gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO1);
|
||||
|
||||
adc_power_init();
|
||||
while (1) {
|
||||
adc_power_task_up();
|
||||
gpio_toggle(LED_DISCO_GREEN_PORT, LED_DISCO_GREEN_PIN);
|
||||
|
||||
for (i = 0; i < 0x1000000; i++) { /* Wait a bit. */
|
||||
__asm__("NOP");
|
||||
}
|
||||
adc_power_task_down();
|
||||
gpio_toggle(LED_DISCO_GREEN_PORT, LED_DISCO_GREEN_PIN);
|
||||
for (i = 0; i < 0x1000000; i++) { /* Wait a bit. */
|
||||
__asm__("NOP");
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue