blob: abd694f994ed813486ff361dd66228e8462baf99 [file] [log] [blame]
/*
*
* Copyright (c) 2021 Project CHIP Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "FreeRTOS.h"
#include "esp_log.h"
#include "pw_sys_io_esp32/init.h"
#include "semphr.h"
#include <lib/support/logging/CHIPLogging.h>
#include <pw_hdlc/encoder.h>
#include <pw_stream/sys_io_stream.h>
#if CONFIG_ENABLE_ESP_INSIGHTS_TRACE && CONFIG_DIAG_USE_EXTERNAL_LOG_WRAP
#include <esp_diagnostics.h>
#endif
namespace PigweedLogger {
namespace {
constexpr uint8_t kLogHdlcAddress = 1; // Send log messages to HDLC address 1 (other than RPC communication)
constexpr size_t kWriteBufferSize = 128; // Buffer for constructing HDLC frames
SemaphoreHandle_t esp_log_mutex;
pw::stream::SysIoWriter sWriter;
size_t sWriteBufferPos;
char sWriteBuffer[kWriteBufferSize];
bool uartInitialised;
void send()
{
pw::hdlc::WriteUIFrame(kLogHdlcAddress, pw::as_bytes(pw::span(sWriteBuffer, sWriteBufferPos)), sWriter);
sWriteBufferPos = 0;
}
} // namespace
void init()
{
esp_log_mutex = xSemaphoreCreateMutex();
assert(esp_log_mutex != NULL);
pw_sys_io_Init();
uartInitialised = true;
}
int putString(const char * buffer, size_t size)
{
xSemaphoreTake(esp_log_mutex, portMAX_DELAY);
assert(sWriteBufferPos < kWriteBufferSize);
for (size_t i = 0; i < size; ++i)
{
if (buffer[i] == '\r')
continue;
if (buffer[i] == '\n')
{
send();
continue;
}
sWriteBuffer[sWriteBufferPos++] = buffer[i];
if (sWriteBufferPos == kWriteBufferSize)
send();
}
xSemaphoreGive(esp_log_mutex);
return size;
}
SemaphoreHandle_t * getSemaphore()
{
return &esp_log_mutex;
}
static const char * getLogColorForLevel(esp_log_level_t level)
{
switch (level)
{
case ESP_LOG_ERROR:
return LOG_COLOR_E "E";
case ESP_LOG_INFO:
return LOG_COLOR_I "I";
default:
// default is kept as ESP_LOG_DEBUG
return LOG_COLOR_D "D";
}
}
// ESP_LOGx(...) logs are funneled to esp_log_write() and it has the specific format. It contains color codes,
// log level character, timestamp, tag, and actual log message. Everything here is part of format and variadic argument.
//
// ChipLogx(...) logs are funneled to esp_log_writev() will only have actual log message without color codes, log level
// character, timestamp, and tag. So, to match up __wrap_esp_log_writev() adds those details when sending log to pigweed
// logger.
extern "C" void __wrap_esp_log_write(esp_log_level_t level, const char * tag, const char * format, ...)
{
va_list v;
va_start(v, format);
#ifndef CONFIG_LOG_DEFAULT_LEVEL_NONE
if (uartInitialised && level <= CONFIG_LOG_MAXIMUM_LEVEL)
{
char formattedMsg[CHIP_CONFIG_LOG_MESSAGE_MAX_SIZE];
size_t len = vsnprintf(formattedMsg, sizeof formattedMsg, format, v);
if (len >= sizeof formattedMsg)
{
len = sizeof formattedMsg - 1;
}
PigweedLogger::putString(formattedMsg, len);
}
#endif
#if CONFIG_ENABLE_ESP_INSIGHTS_TRACE && CONFIG_DIAG_USE_EXTERNAL_LOG_WRAP
esp_diag_log_writev(level, tag, format, v);
#endif
va_end(v);
}
extern "C" void __wrap_esp_log_writev(esp_log_level_t level, const char * tag, const char * format, va_list v)
{
#ifndef CONFIG_LOG_DEFAULT_LEVEL_NONE
if (uartInitialised && level <= CONFIG_LOG_MAXIMUM_LEVEL)
{
const char * logColor = getLogColorForLevel(level);
PigweedLogger::putString(logColor, strlen(logColor));
char formattedMsg[CHIP_CONFIG_LOG_MESSAGE_MAX_SIZE];
size_t len = snprintf(formattedMsg, sizeof formattedMsg, " (%" PRIu32 ") %s: ", esp_log_timestamp(), tag);
PigweedLogger::putString(formattedMsg, len);
memset(formattedMsg, 0, sizeof formattedMsg);
len = vsnprintf(formattedMsg, sizeof formattedMsg, format, v);
if (len >= sizeof formattedMsg)
{
len = sizeof formattedMsg - 1;
}
PigweedLogger::putString(formattedMsg, len);
const char * logResetColor = LOG_RESET_COLOR "\n";
PigweedLogger::putString(logResetColor, strlen(logResetColor));
}
#endif
#if CONFIG_ENABLE_ESP_INSIGHTS_TRACE && CONFIG_DIAG_USE_EXTERNAL_LOG_WRAP
esp_diag_log_write(level, tag, format, v);
#endif
}
} // namespace PigweedLogger