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components/logger/include/logger.h

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+#ifndef LOGGER_H_
+#define LOGGER_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/event_groups.h"
+
+#define LOGGER_SERIAL_BIT       BIT0
+
+/**
+ * @brief Logger event group LOGGER_SERIAL_BIT
+ * 
+ */
+extern EventGroupHandle_t logger_event_group;
+
+/**
+ * @brief Initialize logger
+ * 
+ */
+void logger_init(void);
+
+/**
+ * @brief Print
+ * 
+ * @param str 
+ */
+void logger_print(const char* str);
+
+/**
+ * @brief Print va
+ * 
+ * @param str 
+ * @param l 
+ * @return int 
+ */
+int logger_vprintf(const char* str, va_list l);
+
+/**
+ * @brief Get entries count
+ * 
+ * @return uint16_t 
+ */
+uint16_t logger_count(void);
+
+/**
+ * @brief Read line from index, set index for reading next entry
+ * 
+ * @param index 
+ * @param str 
+ * @param v 
+ * @return true When has next entry
+ * @return false When no entry left
+ */
+bool logger_read(uint16_t *index, char **str, uint16_t* len);
+
+
+#endif /* LOGGER_H_ */

components/logger/include/output_buffer.h

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+#ifndef OUTPUT_BUFFER_H_
+#define OUTPUT_BUFFER_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef struct {
+    uint16_t size;
+    uint16_t count;    
+    uint8_t* data;    
+    uint8_t* append;
+} output_buffer_t;
+
+output_buffer_t* output_buffer_create(uint16_t size);
+
+void output_buffer_delete(output_buffer_t* buffer);
+
+void output_buffer_append_buf(output_buffer_t* buffer, const char* buf, uint16_t len);
+
+void output_buffer_append_str(output_buffer_t* buffer, const char* str);
+
+bool output_buffer_read(output_buffer_t* buffer, uint16_t *index, char **str, uint16_t* len);
+
+#endif /* OUTPUT_BUFFER_H_ */