From a29cccd3ea5cbc98054b6a7a2771927f8aae51c2 Mon Sep 17 00:00:00 2001
From: Daniel Meiburg <key@dmeiburg.de>
Date: Wed, 15 May 2024 00:43:00 +0200
Subject: [PATCH] Update README, init 04_intro_to_sockets

---
 04_intro_to_sockets/Makefile      | 39 +++++++++++++++++++++++++++++++
 04_intro_to_sockets/README.md     | 11 +++++++++
 04_intro_to_sockets/lib/sockets.c |  0
 04_intro_to_sockets/lib/sockets.h |  5 ++++
 04_intro_to_sockets/src/main.c    |  4 ++++
 README.md                         |  5 ----
 6 files changed, 59 insertions(+), 5 deletions(-)
 create mode 100644 04_intro_to_sockets/Makefile
 create mode 100644 04_intro_to_sockets/README.md
 create mode 100644 04_intro_to_sockets/lib/sockets.c
 create mode 100644 04_intro_to_sockets/lib/sockets.h
 create mode 100644 04_intro_to_sockets/src/main.c

diff --git a/04_intro_to_sockets/Makefile b/04_intro_to_sockets/Makefile
new file mode 100644
index 0000000..393b7ba
--- /dev/null
+++ b/04_intro_to_sockets/Makefile
@@ -0,0 +1,39 @@
+CC = gcc
+CFLAGS = -Wall -Ilib
+#LDFLAGS = -lgpiod
+
+# Directories
+SRCDIR = src
+LIBDIR = lib
+OBJDIR = obj
+
+# Source files
+LIB_SOURCES = $(wildcard $(LIBDIR)/*.c)
+SRC_SOURCES = $(wildcard $(SRCDIR)/*.c)
+
+# Object files
+LIB_OBJECTS = $(LIB_SOURCES:$(LIBDIR)/%.c=$(OBJDIR)/%.o)
+SRC_OBJECTS = $(SRC_SOURCES:$(SRCDIR)/%.c=$(OBJDIR)/%.o)
+
+# Target executable
+TARGET = sockets
+
+# Create obj directory if it doesn't exist
+$(shell mkdir -p $(OBJDIR))
+
+# Rules
+all: $(TARGET)
+
+$(TARGET): $(LIB_OBJECTS) $(SRC_OBJECTS)
+	$(CC) $(LIB_OBJECTS) $(SRC_OBJECTS) -o $@ $(LDFLAGS)
+
+$(OBJDIR)/%.o: $(LIBDIR)/%.c
+	$(CC) $(CFLAGS) -c $< -o $@
+
+$(OBJDIR)/%.o: $(SRCDIR)/%.c
+	$(CC) $(CFLAGS) -c $< -o $@
+
+clean:
+	rm -f $(OBJDIR)/*.o $(TARGET)
+
+.PHONY: all clean
diff --git a/04_intro_to_sockets/README.md b/04_intro_to_sockets/README.md
new file mode 100644
index 0000000..efc3305
--- /dev/null
+++ b/04_intro_to_sockets/README.md
@@ -0,0 +1,11 @@
+# IO Access
+
+This program demonstrates how to access the GPIO pins on the Raspberry Pi using
+a LED, a button and a temperature sensor.
+
+## Usage
+
+```bash
+$ make
+$ ./io
+```
diff --git a/04_intro_to_sockets/lib/sockets.c b/04_intro_to_sockets/lib/sockets.c
new file mode 100644
index 0000000..e69de29
diff --git a/04_intro_to_sockets/lib/sockets.h b/04_intro_to_sockets/lib/sockets.h
new file mode 100644
index 0000000..ab5885f
--- /dev/null
+++ b/04_intro_to_sockets/lib/sockets.h
@@ -0,0 +1,5 @@
+#ifndef SOCKETS_LIB_H
+#define SOCKETS_LIB_H
+
+
+#endif // SOCKETS_H
diff --git a/04_intro_to_sockets/src/main.c b/04_intro_to_sockets/src/main.c
new file mode 100644
index 0000000..2b8c6ac
--- /dev/null
+++ b/04_intro_to_sockets/src/main.c
@@ -0,0 +1,4 @@
+
+int main() {
+    return 0;
+}
diff --git a/README.md b/README.md
index 2f87e24..87eb775 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,3 @@
 # Distributed Embedded Systems
 
 This repo contains my code for the Distributed Embedded Systems course at the University of Rostock.
-
-```bash
-make
-./io
-```