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@ -1,10 +1,28 @@
# nRF24 touch pad
# RF touch switch
Touch pad on ATmega328 + nRF24.
Touch switch on ATmega168/328 + RF24.
## Features
1. Power consumption in sleep mode approximately 10 μA. Up to 2 years of operation on one CR2032 battery (estimated).
2. When triggered transmits battery level charge.
3. Automatic restart in case of a hang-up.
4. Easy installation into any standard touch pad enclosure.
4. Easy installation into any standard touch switch enclosure.
## Note
A gateway is required. For details see "RF - ESP-NOW Gateway".
## Full config example for Home Assistant
```yml
mqtt:
sensor:
- name: "NAME"
device_class: "voltage"
unit_of_measurement: "V"
state_topic: "homeassistant/rf_sensor/ID/touch_switch"
value_template: "{{ value_json.battery }}"
force_update: true
qos: 2
```

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@ -1,10 +1,13 @@
[env:ATmega328]
[env:ATmega168]
platform = atmelavr
board = ATmega328
board_build.mcu = atmega328
board = ATmega168
board_build.mcu = atmega168
board_build.f_cpu = 8000000L
framework = arduino
upload_protocol = usbasp
build_flags =
-D TOUCH_SWITCH=4
-D ID=$UNIX_TIME
board_fuses.hfuse = 0xDE
board_fuses.lfuse = 0xE2
board_fuses.efuse = 0x07
@ -12,9 +15,69 @@ upload_flags =
-Pusb
-e
lib_deps =
http://git.zh.com.ru/alexey.zholtikov/zh_config.git
http://git.zh.com.ru/alexey.zholtikov/arduino_nrf24.git
http://git.zh.com.ru/alexey.zholtikov/arduino_free_rtos.git
feilipu/FreeRTOS@^10.5.0-0
nrf24/RF24@^1.4.5
[env:ATmega168P]
platform = atmelavr
board = ATmega168P
board_build.mcu = atmega168p
board_build.f_cpu = 8000000L
framework = arduino
upload_protocol = usbasp
build_flags =
-D TOUCH_SWITCH=4
-D ID=$UNIX_TIME
board_fuses.hfuse = 0xDE
board_fuses.lfuse = 0xE2
board_fuses.efuse = 0x07
upload_flags =
-Pusb
-e
lib_deps =
feilipu/FreeRTOS@^10.5.0-0
nrf24/RF24@^1.4.5
[env:ATmega168PB]
platform = atmelavr
board = ATmega168PB
board_build.mcu = atmega168pb
board_build.f_cpu = 8000000L
framework = arduino
upload_protocol = usbasp
build_flags =
-D TOUCH_SWITCH=4
-D ID=$UNIX_TIME
board_fuses.hfuse = 0xDE
board_fuses.lfuse = 0xE2
board_fuses.efuse = 0x07
upload_flags =
-Pusb
-e
lib_deps =
feilipu/FreeRTOS@^10.5.0-0
nrf24/RF24@^1.4.5
[env:ATmega328]
platform = atmelavr
board = ATmega328
board_build.mcu = atmega328
board_build.f_cpu = 8000000L
framework = arduino
upload_protocol = usbasp
build_flags =
-D TOUCH_SWITCH=4
-D ID=$UNIX_TIME
board_fuses.hfuse = 0xDE
board_fuses.lfuse = 0xE2
board_fuses.efuse = 0x07
upload_flags =
-Pusb
-e
lib_deps =
-D TOUCH_SWITCH=4
feilipu/FreeRTOS@^10.5.0-0
nrf24/RF24@^1.4.5
[env:ATmega328P]
platform = atmelavr
@ -23,6 +86,9 @@ board_build.mcu = atmega328p
board_build.f_cpu = 8000000L
framework = arduino
upload_protocol = usbasp
build_flags =
-D TOUCH_SWITCH=4
-D ID=$UNIX_TIME
board_fuses.hfuse = 0xDE
board_fuses.lfuse = 0xE2
board_fuses.efuse = 0x07
@ -30,9 +96,8 @@ upload_flags =
-Pusb
-e
lib_deps =
http://git.zh.com.ru/alexey.zholtikov/zh_config.git
http://git.zh.com.ru/alexey.zholtikov/arduino_nrf24.git
http://git.zh.com.ru/alexey.zholtikov/arduino_free_rtos.git
feilipu/FreeRTOS@^10.5.0-0
nrf24/RF24@^1.4.5
[env:ATmega328PB]
platform = atmelavr
@ -41,6 +106,9 @@ board_build.mcu = atmega328pb
board_build.f_cpu = 8000000L
framework = arduino
upload_protocol = usbasp
build_flags =
-D TOUCH_SWITCH=4
-D ID=$UNIX_TIME
board_fuses.hfuse = 0xDE
board_fuses.lfuse = 0xE2
board_fuses.efuse = 0x07
@ -48,6 +116,5 @@ upload_flags =
-Pusb
-e
lib_deps =
http://git.zh.com.ru/alexey.zholtikov/zh_config.git
http://git.zh.com.ru/alexey.zholtikov/arduino_nrf24.git
http://git.zh.com.ru/alexey.zholtikov/arduino_free_rtos.git
feilipu/FreeRTOS@^10.5.0-0
nrf24/RF24@^1.4.5

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@ -3,41 +3,23 @@
#include "RF24.h"
#include "avr/interrupt.h"
#include "semphr.h"
#include "zh_config.h"
#define ID 1 // Unique ID of the device on the network.
typedef struct
{
int16_t sensor_id{0};
int16_t sensor_type{0};
int16_t value_1{0};
int16_t value_2{0};
int16_t value_3{0};
int16_t value_4{0};
int16_t value_5{0};
} transmitted_data_t;
void sendButtonPushing(void *pvParameters);
float getBatteryLevelCharge(void);
RF24 radio(9, 10);
SemaphoreHandle_t pad_pushing;
float get_battery_level_charge()
{
ADMUX = (1 << REFS0) | (1 << MUX3) | (1 << MUX2) | (1 << MUX1);
ADCSRA |= (1 << ADEN);
delay(10);
ADCSRA |= (1 << ADSC);
while (bit_is_set(ADCSRA, ADSC))
;
ADCSRA &= ~(1 << ADEN);
return (1024 * 1.1) / (ADCL + ADCH * 256);
}
void send_pad_pushing(void *pvParameters)
{
(void)pvParameters;
for (;;)
{
xSemaphoreTake(pad_pushing, portMAX_DELAY);
rf_transmitted_data_t sensor{ID, RFST_TOUCH_PAD};
sensor.value_1 = get_battery_level_charge() * 100;
radio.powerUp();
radio.flush_tx();
radio.write(&sensor, sizeof(rf_transmitted_data_t));
radio.powerDown();
sei();
}
vTaskDelete(NULL);
}
SemaphoreHandle_t buttonSemaphore;
void setup()
{
@ -54,8 +36,8 @@ void setup()
radio.setRetries(15, 15);
radio.openWritingPipe(0xDDEEFF);
radio.powerDown();
pad_pushing = xSemaphoreCreateBinary();
xTaskCreate(send_pad_pushing, "Send Pad Pushing", configMINIMAL_STACK_SIZE, NULL, 1, NULL);
buttonSemaphore = xSemaphoreCreateBinary();
xTaskCreate(sendButtonPushing, "Send Button Pushing", configMINIMAL_STACK_SIZE, NULL, 1, NULL);
}
void loop()
@ -68,8 +50,38 @@ void loop()
sleep_reset();
}
void sendButtonPushing(void *pvParameters)
{
(void)pvParameters;
for (;;)
{
xSemaphoreTake(buttonSemaphore, portMAX_DELAY);
transmitted_data_t sensor{abs((int16_t)ID), TOUCH_SWITCH};
sensor.value_1 = getBatteryLevelCharge() * 100;
radio.powerUp();
radio.flush_tx();
radio.write(&sensor, sizeof(transmitted_data_t));
radio.powerDown();
sei();
}
vTaskDelete(NULL);
}
float getBatteryLevelCharge()
{
ADMUX = (1 << REFS0) | (1 << MUX3) | (1 << MUX2) | (1 << MUX1);
ADCSRA |= (1 << ADEN);
delay(10);
ADCSRA |= (1 << ADSC);
while (bit_is_set(ADCSRA, ADSC))
;
ADCSRA &= ~(1 << ADEN);
float value = ((1024 * 1.1) / (ADCL + ADCH * 256));
return value;
}
ISR(INT1_vect)
{
cli();
xSemaphoreGiveFromISR(pad_pushing, NULL);
xSemaphoreGiveFromISR(buttonSemaphore, NULL);
}