3 files changed, 24 insertions, 2 deletions
diff --git a/proto/include.cmake b/proto/include.cmake
index c8a90b6..ac1305e 100644
--- a/proto/include.cmake
+++ b/proto/include.cmake
@@ -1,4 +1,7 @@
 include_directories(${CMAKE_CURRENT_LIST_DIR})
+add_library(puzbus STATIC
+	${CMAKE_CURRENT_LIST_DIR}/puzbusv1.c
+	)
 
 # mpack
 include_directories(${CMAKE_CURRENT_LIST_DIR}/lib/mpack/src/mpack)
diff --git a/proto/puzbusv1.c b/proto/puzbusv1.c
index 9d1335e..3ff7c63 100644
--- a/proto/puzbusv1.c
+++ b/proto/puzbusv1.c
@@ -1,13 +1,32 @@
 #include <mpack.h>
+#include <stdio.h>
 
 #include "puzbusv1.h"
 
 int pb_read(struct pb_msg* target, char* buf, size_t buf_sz) {
 	mpack_reader_t reader;
+	printf("read %lu bytes...\n", buf_sz);
+
+	mpack_reader_init_data(&reader, buf, buf_sz);
+
+	uint16_t address = mpack_expect_u16(&reader);
+	char data_buf[80];
+	size_t data_size = mpack_expect_bin_buf(&reader, data_buf, sizeof(data_buf));
+
+	printf("0x%02x\n", address);
+	printf("\"%.*s\"\n", data_size, data_buf);
 
 	return 0;
 }
 
-void pb_free(struct pb_msg* msg);
+int pb_write(struct pb_msg* target, char** buf, size_t* buf_sz) {
+	mpack_writer_t writer;
+	mpack_writer_init_growable(&writer, buf, buf_sz);
 
+	mpack_write_u16(&writer, target->addr);
+	mpack_write_bin(&writer, target->data, target->length);
+
+	// finish writing
+	return mpack_writer_destroy(&writer) == mpack_ok;
+}
 
diff --git a/proto/puzbusv1.h b/proto/puzbusv1.h
index 071c887..116dbf9 100644
--- a/proto/puzbusv1.h
+++ b/proto/puzbusv1.h
@@ -14,7 +14,7 @@ struct pb_msg {
 };
 
 int pb_read(struct pb_msg* target, char* buf, size_t buf_sz);
-void pb_free(struct pb_msg* msg);
+int pb_write(struct pb_msg* target, char** buf, size_t* buf_sz);
 
 #ifdef __cplusplus
 }