subsys/logging/log_backend_uart.c

/*
 * Copyright (c) 2018 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#include <logging/log_backend_uart.h>
#include <logging/log_core.h>
#include <logging/log_msg.h>
#include <logging/log_output.h>
#include <device.h>
#include <uart.h>

int char_out(u8_t *data, size_t length, void *ctx)
{
	struct device *dev = (struct device *)ctx;

	for (size_t i = 0; i < length; i++) {
		uart_poll_out(dev, data[i]);
	}

	return length;
}

static u8_t buf;

static struct log_output_ctx ctx = {
	.func = char_out,
	.data = &buf,
	.length = 1,
	.offset = 0
};

static void put(const struct log_backend *const backend,
		struct log_msg *msg)
{
	log_msg_get(msg);

	u32_t flags = 0;

	if (IS_ENABLED(CONFIG_LOG_BACKEND_UART_SHOW_COLOR)) {
		flags |= LOG_OUTPUT_FLAG_COLORS;
	}

	if (IS_ENABLED(CONFIG_LOG_BACKEND_UART_FORMAT_TIMESTAMP)) {
		flags |= LOG_OUTPUT_FLAG_FORMAT_TIMESTAMP;
	}

	log_output_msg_process(msg, &ctx, flags);

	log_msg_put(msg);

}

void log_backend_uart_init(void)
{
	ctx.ctx = device_get_binding(CONFIG_UART_CONSOLE_ON_DEV_NAME);
}

static void panic(struct log_backend const *const backend)
{

}

const struct log_backend_api log_backend_uart_api = {
	.put = put,
	.panic = panic,
};