Version 1.0

Initial version.

src/main.cpp

@@ -0,0 +1,87 @@
+#include "Arduino.h"
+#include "Arduino_FreeRTOS.h"
+#include "RF24.h"
+#include "avr/interrupt.h"
+#include "semphr.h"
+
+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 buttonSemaphore;
+
+void setup()
+{
+  EICRA |= (1 << ISC11) | (1 << ISC10);
+  EIMSK |= (1 << INT1);
+  ADCSRA &= ~(1 << ADEN);
+  radio.begin();
+  radio.setChannel(120);
+  radio.setDataRate(RF24_250KBPS);
+  radio.setPALevel(RF24_PA_MAX);
+  radio.setPayloadSize(14);
+  radio.setAddressWidth(3);
+  radio.setCRCLength(RF24_CRC_8);
+  radio.setRetries(15, 15);
+  radio.openWritingPipe(0xDDEEFF);
+  radio.powerDown();
+  buttonSemaphore = xSemaphoreCreateBinary();
+  xTaskCreate(sendButtonPushing, "Send Button Pushing", configMINIMAL_STACK_SIZE, NULL, 1, NULL);
+}
+
+void loop()
+{
+  set_sleep_mode(SLEEP_MODE_PWR_DOWN);
+  portENTER_CRITICAL();
+  sleep_enable();
+  portEXIT_CRITICAL();
+  sleep_cpu();
+  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(buttonSemaphore, NULL);
+}