messaging subsystem wip

components/services/messaging.h

@@ -0,0 +1,25 @@
+#include "sdkconfig.h"
+#include "freertos/ringbuf.h"
+#include "cJSON.h"
+#pragma once
+typedef enum {
+	MESSAGING_INFO,
+	MESSAGING_WARNING,
+	MESSAGING_ERROR
+} messaging_types;
+typedef struct {
+	void  * next;
+	char subscriber_name[21];
+	RingbufHandle_t buf_handle;
+} messaging_list_t;
+
+typedef struct {
+	time_t sent_time;
+	messaging_types type;
+	char message[101];
+} single_message_t;
+
+cJSON *  messaging_retrieve_messages(RingbufHandle_t buf_handle);
+RingbufHandle_t messaging_register_subscriber(uint8_t max_count, char * name);
+
+void messaging_post_message(messaging_types type, char * fmt, ...);