Compare commits
No commits in common. "89ba05379f134b5ec37cc8db710568bf61b27d52" and "5aaccc39e54a9c97ad1bd52f1e4ddff4833a9306" have entirely different histories.
89ba05379f
...
5aaccc39e5
1
.gitignore
vendored
1
.gitignore
vendored
@ -2,4 +2,3 @@ bin/
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lib/
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obj/
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coverage/
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17
.vscode/c_cpp_properties.json
vendored
Normal file
17
.vscode/c_cpp_properties.json
vendored
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@ -0,0 +1,17 @@
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{
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"configurations": [
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{
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"name": "Linux",
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"includePath": [
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"${workspaceFolder}/**",
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"/usr/include/gpio_ftdi"
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],
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"defines": [],
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"compilerPath": "/usr/bin/clang",
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"cStandard": "c11",
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"cppStandard": "c++17",
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"intelliSenseMode": "clang-x64"
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}
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],
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"version": 4
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}
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47
.vscode/launch.json
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47
.vscode/launch.json
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@ -0,0 +1,47 @@
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{
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// Use IntelliSense to learn about possible attributes.
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// Hover to view descriptions of existing attributes.
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// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
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"version": "0.2.0",
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"configurations": [
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{
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"name": "(gdb) Launch distance",
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"type": "cppdbg",
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"request": "launch",
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"program": "${workspaceFolder}/bin/distance",
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"args": [],
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"stopAtEntry": true,
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"cwd": "${workspaceFolder}",
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"environment": [],
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"externalConsole": false,
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"MIMode": "gdb",
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"setupCommands": [
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{
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"description": "Enable pretty-printing for gdb",
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"text": "-enable-pretty-printing",
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"ignoreFailures": true
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}
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]
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},
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{
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"name": "(gdb) Launch unit test",
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"type": "cppdbg",
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"request": "launch",
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"program": "${workspaceFolder}/bin/test/unit/distance",
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"args": [],
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"stopAtEntry": true,
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"cwd": "${workspaceFolder}",
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"environment": [],
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"externalConsole": false,
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"MIMode": "gdb",
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"setupCommands": [
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{
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"description": "Enable pretty-printing for gdb",
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"text": "-enable-pretty-printing",
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"ignoreFailures": true
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}
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]
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}
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]
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}
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115
.vscode/tasks.json
vendored
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115
.vscode/tasks.json
vendored
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@ -0,0 +1,115 @@
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{
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// See https://go.microsoft.com/fwlink/?LinkId=733558
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// for the documentation about the tasks.json format
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"version": "2.0.0",
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"tasks": [
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{
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"label": "all",
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"type":"shell",
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"command": "make all -j8",
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"problemMatcher": {
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"base": "$gcc",
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"owner": "gcc",
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"fileLocation": [
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"relative",
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"${workspaceFolder}"
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]
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},
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"group": {
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"kind": "build",
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"isDefault": true
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}
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},
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{
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"label": "check",
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"type":"shell",
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"command": "make check -j8",
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"problemMatcher": {
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"base": "$gcc",
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"owner": "gcc",
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"fileLocation": [
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"relative",
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"${workspaceFolder}"
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]
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},
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"group": {
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"kind": "build",
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"isDefault": true
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}
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},
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{
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"label": "clean",
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"type":"shell",
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"command": "make clean -j8",
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"problemMatcher": {
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"base": "$gcc",
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"owner": "gcc",
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"fileLocation": [
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"relative",
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"${workspaceFolder}"
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]
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},
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"group": {
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"kind": "build",
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"isDefault": true
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}
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},
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{
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"label": "build_unit_test",
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"type":"shell",
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"command": "make build_unit_test -j8",
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"problemMatcher": {
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"base": "$gcc",
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"owner": "gcc",
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"fileLocation": [
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"relative",
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"${workspaceFolder}"
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]
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},
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"group": {
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"kind": "build",
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"isDefault": true
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}
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},
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{
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"label": "exec_unit_test",
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"type":"shell",
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"command": "make exec_unit_test -j1",
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"problemMatcher": {
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"base": "$gcc",
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"owner": "gcc",
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"fileLocation": [
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"relative",
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"${workspaceFolder}"
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]
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},
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"group": {
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"kind": "build",
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"isDefault": true
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}
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},
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{
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"label": "coverage",
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"type":"shell",
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"command": "make coverage -j1",
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"problemMatcher": {
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"base": "$gcc",
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"owner": "gcc",
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"fileLocation": [
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"relative",
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"${workspaceFolder}"
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]
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},
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"group": {
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"kind": "build",
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"isDefault": true
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}
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}
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],
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"presentation": {
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"focus": true,
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"reveal": "always",
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"panel": "shared",
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"clear": true,
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}
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}
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13
Makefile
13
Makefile
@ -1,6 +1,6 @@
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CROSS_COMPILE ?=
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TARGET_FILE ?= blink
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TARGET_FILE ?= distance
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CC = $(CROSS_COMPILE)gcc
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CPP = $(CROSS_COMPILE)cpp
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@ -19,13 +19,13 @@ PREFIX ?= /usr
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BIN_INSTALL_DIR ?= $(PREFIX)/bin/$(TARGET_FILE)
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INCLUDES := inc
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LIBS = gpio_sys i2c_bb
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INCLUDES += /usr/include/libftdi1
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INCLUDES += /usr/include/gpio_ftdi
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ifneq "$(findstring $(MAKECMDGOALS), build_unit_test exec_unit_test coverage)" ""
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INCLUDES += test/inc
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C_FLAGS += --coverage
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LD_FLAGS += --coverage
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L_FLAGS += --coverage
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endif
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C_FLAGS += -fpic
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@ -46,7 +46,7 @@ UNIT_TEST_TARGET = $(BIN_DIR)/$(UNIT_TEST_SRC_DIR)/$(TARGET_FILE)
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TARGET = $(BIN_DIR)/$(TARGET_FILE)
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THIS_MAKEFILE := $(lastword $(MAKEFILE_LIST))
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.PHONY: all install uninstall clean distclean
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.PHONY: all install uninstall clean
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all: $(TARGET)
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install: all
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@ -65,9 +65,6 @@ clean:
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rm -f $(OBJ_DIR)/*.gcda $(OBJ_DIR)/*.gcno
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rm -fr $(COVERAGE_DIR)
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distclean:
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rm -rf $(OBJ_DIR) $(BIN_DIR) $(COVERAGE_DIR)
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.PHONY: coverage
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coverage: _cov_genhtml
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$(eval COVERAGE:=$(shell grep 'lines' .coverage.tmp | egrep -o '[0-9]+.[0-9]+%'))
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90
src/main.c
90
src/main.c
@ -6,95 +6,9 @@
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#include <unistd.h>
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#include <stdio.h>
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#include <libgpio_sys/gpio_sys.h>
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#include <libi2c_bb/i2c_bb.h>
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#define ADS1115_ADDR 0x48
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#define VPS 6.144 / 32768.0
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static struct gpio_sys gpio_sda = {
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.pin = 4,
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.direction = OUT,
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};
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static struct gpio_sys gpio_scl = {
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.pin = 24,
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.direction = OUT,
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};
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static struct i2c_bb i2c_obj = {
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.sda = &gpio_sda,
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.scl = &gpio_scl,
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};
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int main(void)
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{
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int res;
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uint16_t value;
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float f_value;
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char w_buffer[3], r_buffer[2];
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printf("Hello world!\n");
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openlog("distance_app", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
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printf("Trying to open I2C device.\n");
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syslog(LOG_DEBUG, "Trying to open i2c_bb.\n");
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res = i2c_open(&i2c_obj);
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if(res != EXIT_SUCCESS) {
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syslog(LOG_ERR, "Unable to open i2c_bb.\n");
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return EXIT_FAILURE;
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}
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syslog(LOG_DEBUG, "i2c_bb successfully opened.\n");
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w_buffer[0] = 0b00000001; // config register @ address 1
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w_buffer[1] = 0b11000001; // config value high byte
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w_buffer[2] = 0b10000111; // config value low byte
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// begin conversation
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res = i2c_write(&i2c_obj, ADS1115_ADDR, w_buffer, 3);
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if(res != 3) {
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syslog(LOG_ERR, "Unable to write to ADS1115.\n");
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i2c_close(&i2c_obj);
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return EXIT_FAILURE;
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}
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// wait for conversation complete
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do {
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res = i2c_read(&i2c_obj, ADS1115_ADDR, w_buffer, 2);
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if(res != 2) {
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syslog(LOG_ERR, "Unable to read from ADS1115.\n");
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i2c_close(&i2c_obj);
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return EXIT_FAILURE;
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}
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} while((w_buffer[0] & 0x80) == 0);
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// read conversation result
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r_buffer[0] = 0b00000000; /* conversation register at address 0b00000000 */
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res = i2c_write(&i2c_obj, ADS1115_ADDR, r_buffer, 1);
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if(res != 1) {
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syslog(LOG_ERR, "Unable to write to ADS1115.\n");
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i2c_close(&i2c_obj);
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return EXIT_FAILURE;
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}
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// read 2 bytes
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res = i2c_read(&i2c_obj, ADS1115_ADDR, r_buffer, 2);
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if(res != 2) {
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syslog(LOG_ERR, "Unable to read from ADS1115.\n");
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i2c_close(&i2c_obj);
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return EXIT_FAILURE;
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}
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printf("Conversation done [0x%02x:%02x].\n", r_buffer[0], r_buffer[1]);
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i2c_close(&i2c_obj);
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value = r_buffer[0] << 8 | r_buffer[1];
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if(value & 0x8000) {
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value = 0;
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}
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f_value = value * VPS;
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printf("Conversation result: %4.3fV (0x%04x).\n", f_value, value);
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return res;
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return EXIT_SUCCESS;
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}
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Loading…
Reference in New Issue
Block a user