From d2c73c9fb1bd4118123692c0ec33c08385d60f16 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicholas=20St=C4=83nescu?= <n.stanescu@student.tudelft.nl>
Date: Sat, 26 Apr 2025 18:05:52 +0200
Subject: [PATCH] added tasks and some extra helper things

---
 README.MD       |  9 ++++++---
 communication.c | 20 ++++++++++++++++++--
 communication.h |  4 +++-
 main.c          | 11 ++++++-----
 4 files changed, 33 insertions(+), 11 deletions(-)

diff --git a/README.MD b/README.MD
index a1908f1..6e55aaf 100644
--- a/README.MD
+++ b/README.MD
@@ -1,3 +1,6 @@
-# Doing serial with c
-
-# dont ask
\ No newline at end of file
+# serial for ip2
+TODO:
+- [ ] create read function
+- [ ] create write function
+- [ ] how to be aware of data arriving
+- [ ] other
\ No newline at end of file
diff --git a/communication.c b/communication.c
index e7ba785..602d7da 100644
--- a/communication.c
+++ b/communication.c
@@ -33,12 +33,18 @@ void comm_end_communication(struct sp_port *port) {
 	sp_free_port_list(port_list);
 }
 
-int comm_write(u_int8_t data) {
+int comm_write(byte data) {
 	// we are writing 8 bit bytes to the fpga anyways and pc -> fpga only needs to tell what do to next, can be fit in 8 bits
 	//TODO: IMPLEMENT
 	return 0;
 }
 
+int comm_await() {
+	// Await data from the robot
+	//TODO: IMPLEMENT
+	return 0;
+}
+
 struct sp_port **comm_get_port_list() {
 	struct sp_port **port_list;
 	enum sp_return result = sp_list_ports(&port_list);
@@ -95,8 +101,18 @@ int check(enum sp_return result)
 	}
 }
 
-void uint8_to_bit_array(u_int8_t bit_array[], u_int8_t data) {
+void uint8_to_bit_array(byte bit_array[], byte data) {
 	for (int i = 0; i < 8; i++) {
 		bit_array[i] = (data >> i) & 1;
 	}
 }
+
+byte bit_array_to_uint8(byte bit_array[]) {
+	byte data=0;
+	byte currentpow=1;
+	for (int i = 0; i < 8; i++) {
+		data+=bit_array[i]*currentpow;
+		currentpow*=2;
+	}
+	return data;
+}
diff --git a/communication.h b/communication.h
index c20dd67..7f617b4 100644
--- a/communication.h
+++ b/communication.h
@@ -7,6 +7,7 @@
 #include <libserialport.h>
 #include <stdlib.h>
 
+typedef u_int8_t byte;
 
 void comm_init_communication();
 
@@ -23,5 +24,6 @@ void comm_open_port(struct sp_port *port);
 
 int check(enum sp_return result);
 
-void uint8_to_bit_array(u_int8_t *bit_array, u_int8_t data);
+void uint8_to_bit_array(byte *bit_array, byte data);
+byte bit_array_to_uint8(const byte bit_array[]);
 #endif //COMMS_H
diff --git a/main.c b/main.c
index ace6a69..b047b6c 100644
--- a/main.c
+++ b/main.c
@@ -11,13 +11,13 @@ extern struct sp_port *port;
 int main(int argc, char *argv[]) {
 	comm_init_communication();
 
-	u_int8_t data = 205;
+	byte data = 205;
 	int size = 1;
 	printf("size: %d\n", size);
 	unsigned int timeout = 50 * size; //50 ms timeout per byte
 
 	check(sp_nonblocking_write(port, &data, size));
-	char *buf = malloc(size + 1);
+	byte *buf = malloc(size + 1);
 
 	int result = check(sp_blocking_read(port, buf, size, timeout));
 
@@ -27,13 +27,14 @@ int main(int argc, char *argv[]) {
 	buf[result] = '\0';
 	printf("%s\n", buf);
 
-	u_int8_t bits[8];
-	uint8_to_bit_array(bits, buf[0]);
-	free(buf);
+	byte bits[8];
+	uint8_to_bit_array(bits, buf);
 
 	for (int i = 0; i < 8; i++) {
 		printf("%d ", bits[i]);
 	}
+	byte reconv_data = bit_array_to_uint8(bits);
+	printf("data: %d\n", reconv_data);
 	printf("\n");
 
 	comm_end_communication(port);