smart-home/weather-sensor/firmware/main.c

//#define F_CPU 1000000UL  // Frequenz des Quarzes, ohne Quarz standardmäßig 1MHz

#include <avr/io.h>
#include <util/delay.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "nrf24l01.h"
#include "nrf24l01_definitions.h"
#include "bme280_interface.h"
#include "uart_debug.h"

//#define LED_DDR     DDRB        //DDRA, DDRB...
//#define LED_PORT    PORTB       //PORTA, PORTB...
//#define LED_PORTPIN PB0         //PA0, PA1..., PB0, PB1..., ...
//#define time_off    8

/* SPI: */
#define SPI_DDR       DDRB
#define SPI_SCK_PIN   PB1
#define SPI_MOSI_PIN  PB2
#define SPI_MISO_PIN  PB3

/* NRF24L01 */



/*
 * CS: pin 9
 * CE: pin 8
 * IRQ: pin 7
 */



char bool_case = 0;
int timer = 0;
int timer_max = 0;


void Initialize_SPI(void);

int main (void)
{
	char debugString[50] = "";
//	uint8_t testRegisterContent = 0x0A;
//	uint8_t registerContent[5];
//	char registerContentString[30];
//	uint8_t lengthRead;

	/* Set baud rate */
	Initialize_UART(51);

	sprintf(debugString, "%s\r\n", "Program start");
	Print_Debug_String(debugString);

	/* Initialize the SPI */
	Initialize_SPI();

	/* Initialize the nrf24l01 */
	Initialize_NRF24L01();
	// The NRF24L01 is now in the mode Standby-I.

	/* Configure the transmission parameters (Enhanced ShockBurst)*/
	Configure_Transmission();

	/* Initialize the BME280 */
	Initialize_BME280();


#if 0
	/* Test the BME280 by reading the ID */
	uint8_t id = Read_BME280_Register(0xD0);
	sprintf(debugString, "ID: 0x%x\r\n", id);
	Print_Debug_String(debugString);
#endif





//	sprintf(debugString, "%s\r\n", "program end");
//	Print_Debug_String(debugString);

	while(1)
	{
		BME280_Get_Measurement();
		Send_Test_Message();
		_delay_ms(1000);
	}
}

void Initialize_SPI(void)
{
	/* Set MOSI and SCK output, all others input */
	SPI_DDR = (1<<SPI_MOSI_PIN)|(1<<SPI_SCK_PIN);
	/* Enable SPI, Master, set clock rate fck/16 */
	SPCR = (1<<SPE)|(1<<MSTR);
}