#pragma once
/* This file contains functions to enable logging from realtime functions.
 * Actual log writing happens in the FreeRTOS idle task.
 */

#include "FreeRTOS.h"
#include "queue.h"

typedef struct {
    const char *format;
    unsigned arg1;
    unsigned arg2;
} syslog_entry_t;

extern xQueueHandle syslog_queue;

// Send a log message through the syslog queue.
// The message may contain up to 2 unsigned arguments, allowing printf
// formatting to be offloaded to the logging thread.
// The format string must be in ROM.
// This function will never block.
static inline void syslog(const char *format, unsigned arg1, unsigned arg2)
{
    syslog_entry_t entry = {format, arg1, arg2};
    xQueueSend(syslog_queue, &entry, 0);
}

// Atomic event counters. The idle task will check these periodically
// and log any counts.
#define counter_inc(x) __sync_fetch_and_add(&(x), 1)
#define counter_get_and_zero(x) __sync_fetch_and_and(&(x), 0)

#define COUNTERS_XMACRO \
    X(COUNTER_io_cli_errors) \
    X(COUNTER_io_gsm_errors)

#define X(cnt) extern volatile unsigned cnt;
COUNTERS_XMACRO
#undef X

void syslog_init();
void syslog_poll();
void syslog_task(void *pvParameters);