alexey.zholtikov/arduino_nrf24_touch_pad
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12
README.md
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@ -1,10 +1,16 @@
# nRF24 touch pad
# RF touch switch
Touch pad on ATmega328 + nRF24.
Touch switch on ATmega168/328 + nRF24.
## 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 Gateway](https://github.com/aZholtikov/RF-Gateway).
Any feedback via [e-mail](mailto:github@zh.com.ru) would be appreciated. Or... [Buy me a coffee](https://paypal.me/aZholtikov).

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hardware/Assy 1.jpeg
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90
platformio.ini
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@ -1,10 +1,12 @@
[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 ID=$UNIX_TIME
board_fuses.hfuse = 0xDE
board_fuses.lfuse = 0xE2
board_fuses.efuse = 0x07
@ -12,9 +14,69 @@ upload_flags =
-Pusb
-e
lib_deps =
http://git.zh.com.ru/alexey.zholtikov/zh_config.git
http://git.zh.com.ru/alexey.zholtikov/arduino_nrf24.git
http://git.zh.com.ru/alexey.zholtikov/arduino_free_rtos.git
https://github.com/aZholtikov/ZHConfig
https://github.com/feilipu/Arduino_FreeRTOS_Library
https://github.com/nRF24/RF24
[env:ATmega168P]
platform = atmelavr
board = ATmega168P
board_build.mcu = atmega168p
board_build.f_cpu = 8000000L
framework = arduino
upload_protocol = usbasp
build_flags =
-D ID=$UNIX_TIME
board_fuses.hfuse = 0xDE
board_fuses.lfuse = 0xE2
board_fuses.efuse = 0x07
upload_flags =
-Pusb
-e
lib_deps =
https://github.com/aZholtikov/ZHConfig
https://github.com/feilipu/Arduino_FreeRTOS_Library
https://github.com/nRF24/RF24
[env:ATmega168PB]
platform = atmelavr
board = ATmega168PB
board_build.mcu = atmega168pb
board_build.f_cpu = 8000000L
framework = arduino
upload_protocol = usbasp
build_flags =
-D ID=$UNIX_TIME
board_fuses.hfuse = 0xDE
board_fuses.lfuse = 0xE2
board_fuses.efuse = 0x07
upload_flags =
-Pusb
-e
lib_deps =
https://github.com/aZholtikov/ZHConfig
https://github.com/feilipu/Arduino_FreeRTOS_Library
https://github.com/nRF24/RF24
[env:ATmega328]
platform = atmelavr
board = ATmega328
board_build.mcu = atmega328
board_build.f_cpu = 8000000L
framework = arduino
upload_protocol = usbasp
build_flags =
-D ID=$UNIX_TIME
board_fuses.hfuse = 0xDE
board_fuses.lfuse = 0xE2
board_fuses.efuse = 0x07
upload_flags =
-Pusb
-e
lib_deps =
https://github.com/aZholtikov/ZHConfig
https://github.com/feilipu/Arduino_FreeRTOS_Library
https://github.com/nRF24/RF24
[env:ATmega328P]
platform = atmelavr
@ -23,6 +85,8 @@ board_build.mcu = atmega328p
board_build.f_cpu = 8000000L
framework = arduino
upload_protocol = usbasp
build_flags =
-D ID=$UNIX_TIME
board_fuses.hfuse = 0xDE
board_fuses.lfuse = 0xE2
board_fuses.efuse = 0x07
@ -30,9 +94,9 @@ upload_flags =
-Pusb
-e
lib_deps =
http://git.zh.com.ru/alexey.zholtikov/zh_config.git
http://git.zh.com.ru/alexey.zholtikov/arduino_nrf24.git
http://git.zh.com.ru/alexey.zholtikov/arduino_free_rtos.git
https://github.com/aZholtikov/ZHConfig
https://github.com/feilipu/Arduino_FreeRTOS_Library
https://github.com/nRF24/RF24
[env:ATmega328PB]
platform = atmelavr
@ -41,6 +105,8 @@ board_build.mcu = atmega328pb
board_build.f_cpu = 8000000L
framework = arduino
upload_protocol = usbasp
build_flags =
-D ID=$UNIX_TIME
board_fuses.hfuse = 0xDE
board_fuses.lfuse = 0xE2
board_fuses.efuse = 0x07
@ -48,6 +114,6 @@ 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
https://github.com/aZholtikov/ZHConfig
https://github.com/feilipu/Arduino_FreeRTOS_Library
https://github.com/nRF24/RF24

91
src/main.cpp
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@ -3,44 +3,22 @@
#include "RF24.h"
#include "avr/interrupt.h"
#include "semphr.h"
#include "zh_config.h"
#include "EEPROM.h"
#include "ZHConfig.h"
#define ID 1 // Unique ID of the device on the network.
void sendButtonPushing(void *pvParameters);
float getBatteryLevelCharge(void);
void loadId(void);
int16_t id{abs((int16_t)ID)};
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()
{
loadId();
EICRA |= (1 << ISC11) | (1 << ISC10);
EIMSK |= (1 << INT1);
ADCSRA &= ~(1 << ADEN);
@ -54,8 +32,8 @@ 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 +46,51 @@ void loop()
sleep_reset();
}
void sendButtonPushing(void *pvParameters)
{
(void)pvParameters;
for (;;)
{
xSemaphoreTake(buttonSemaphore, portMAX_DELAY);
rf_transmitted_data_t sensor{id, RFST_TOUCH_SWITCH};
sensor.value_1 = getBatteryLevelCharge() * 100;
radio.powerUp();
radio.flush_tx();
radio.write(&sensor, sizeof(rf_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);
return (1024 * 1.1) / (ADCL + ADCH * 256);
}
void loadId()
{
cli();
if (EEPROM.read(511) == 254)
EEPROM.get(0, id);
else
{
EEPROM.write(511, 254);
EEPROM.put(0, id);
}
delay(50);
sei();
}
ISR(INT1_vect)
{
cli();
xSemaphoreGiveFromISR(pad_pushing, NULL);
xSemaphoreGiveFromISR(buttonSemaphore, NULL);
}