2017-11-12 22:49:10 +01:00
|
|
|
/*
|
|
|
|
* Copyright 2017 Rafal Zajac <rzajac@gmail.com>.
|
|
|
|
*
|
|
|
|
* 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 <esp_ds18b20.h>
|
|
|
|
#include <esp_gpio.h>
|
|
|
|
#include <esp_eb.h>
|
|
|
|
#include <esp_sdo.h>
|
|
|
|
#include <esp_util.h>
|
2017-11-13 16:29:21 +01:00
|
|
|
#include <user_interface.h>
|
2017-11-12 22:49:10 +01:00
|
|
|
|
|
|
|
// List of found devices on the OneWire bus.
|
|
|
|
static esp_ow_device *root = NULL;
|
|
|
|
|
|
|
|
|
|
|
|
// Handle temperature conversion callbacks.
|
|
|
|
static void ICACHE_FLASH_ATTR
|
|
|
|
temperature(const char *event, void *arg)
|
|
|
|
{
|
|
|
|
esp_ow_device *dev = arg;
|
|
|
|
esp_ds18b20_st *st = dev->custom;
|
|
|
|
|
|
|
|
if (st->last_temp == ESP_DS18B20_TEMP_ERR) {
|
|
|
|
os_printf("Temperature read error.\n");
|
|
|
|
} else {
|
|
|
|
os_printf("Temperature: %s\n", esp_util_ftoa(st->last_temp, 4));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ICACHE_FLASH_ATTR
|
|
|
|
sys_init_done()
|
|
|
|
{
|
|
|
|
esp_ow_err err;
|
|
|
|
|
|
|
|
if (esp_ds18b20_init(GPIO2) == false) {
|
|
|
|
os_printf("Error initializing DS18B20.\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = esp_ds18b20_search(GPIO2, false, &root);
|
|
|
|
if (err != ESP_OW_OK) {
|
|
|
|
os_printf("Search error: %d\n", err);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (root == NULL) {
|
|
|
|
os_printf("No devices found.\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
// Callbacks will be called when conversion is finished.
|
|
|
|
esp_eb_attach(ESP_DS18B20_EV_TEMP_READY, temperature);
|
|
|
|
esp_eb_attach(ESP_DS18B20_EV_TEMP_ERROR, temperature);
|
|
|
|
|
|
|
|
// Get temperature from the first DS18B20 sensor.
|
|
|
|
esp_ds18b20_convert(root);
|
|
|
|
}
|
|
|
|
|
|
|
|
void ICACHE_FLASH_ATTR
|
|
|
|
user_init()
|
|
|
|
{
|
|
|
|
// No need for wifi for this examples.
|
|
|
|
wifi_station_disconnect();
|
|
|
|
wifi_set_opmode_current(NULL_MODE);
|
|
|
|
|
|
|
|
stdout_init(BIT_RATE_74880);
|
|
|
|
system_init_done_cb(sys_init_done);
|
|
|
|
}
|