71 lines
1.5 KiB
Markdown
71 lines
1.5 KiB
Markdown
# ESP32 ESP-IDF and ESP8266 RTOS SDK component for 1-Wire DS18B20 sensor
|
|
|
|
## Tested on
|
|
|
|
1. ESP8266 RTOS_SDK v3.4
|
|
2. ESP32 ESP-IDF v5.2
|
|
|
|
## Dependencies
|
|
|
|
1. [zh_onewire](http://git.zh.com.ru/alexey.zholtikov/zh_onewire.git)
|
|
|
|
## [Function description](http://zh-ds18b20.zh.com.ru)
|
|
|
|
## Using
|
|
|
|
In an existing project, run the following command to install the components:
|
|
|
|
```text
|
|
cd ../your_project/components
|
|
git clone http://git.zh.com.ru/alexey.zholtikov/zh_onewire.git
|
|
git clone http://git.zh.com.ru/alexey.zholtikov/zh_ds18b20.git
|
|
```
|
|
|
|
In the application, add the component:
|
|
|
|
```c
|
|
#include "zh_ds18b20.h"
|
|
```
|
|
|
|
## Examples
|
|
|
|
One or more 1-Wire DS18B20 sensors on bus:
|
|
|
|
```c
|
|
#include "zh_ds18b20.h"
|
|
|
|
void app_main(void)
|
|
{
|
|
uint8_t *rom;
|
|
float temperature;
|
|
zh_onewire_init(GPIO_NUM_5);
|
|
if (zh_onewire_reset() != ESP_OK)
|
|
{
|
|
printf("There are no 1-Wire devices available on the bus.\n");
|
|
}
|
|
else
|
|
{
|
|
zh_onewire_search_rom_init();
|
|
for (;;)
|
|
{
|
|
rom = zh_onewire_search_rom_next();
|
|
if (rom == NULL)
|
|
{
|
|
break;
|
|
}
|
|
printf("Found device ROM: ");
|
|
for (uint8_t i = 0; i < 8; ++i)
|
|
{
|
|
printf("%X ", *(rom++));
|
|
}
|
|
printf("\n");
|
|
rom -= 8;
|
|
zh_ds18b20_read(rom, &temperature);
|
|
printf("Temperature: %0.2f\n", temperature);
|
|
}
|
|
}
|
|
}
|
|
```
|
|
|
|
Any [feedback](mailto:github@azholtikov.ru) will be gladly accepted.
|