Send the data from the BME280 with the NRF24L01

weather-sensor/firmware/bme280_interface.c

@@ -62,25 +62,13 @@ int8_t Initialize_BME280(void)
 }
 
 /* Get one measurement in forced mode */
-void BME280_Get_Measurement(void)
+void BME280_Get_Measurement(struct bme280_data * data)
 {
 	int8_t rslt = BME280_OK;
-	struct bme280_data comp_data;
-	char debugString[30] = "";
 
 	rslt = bme280_set_sensor_mode(BME280_FORCED_MODE, &deviceStructure);
-	/* Wait for the measurement to complete and print data @25Hz */
 	deviceStructure.delay_ms(req_delay);
-	rslt = bme280_get_sensor_data(BME280_ALL, &comp_data, &deviceStructure);
-
-	sprintf(debugString, "rslt: %d\r\n", rslt);
-	Print_Debug_String(debugString);
-	sprintf(debugString, "temp: %ld\r\n", comp_data.temperature);
-	Print_Debug_String(debugString);
-	sprintf(debugString, "hum: %ld\r\n", comp_data.humidity);
-	Print_Debug_String(debugString);
-	sprintf(debugString, "pres: %ld\r\n", comp_data.pressure);
-	Print_Debug_String(debugString);
+	rslt = bme280_get_sensor_data(BME280_ALL, data, &deviceStructure);
 }
 
 /* Implementation of the interface function needed by the BME280 library */

weather-sensor/firmware/bme280_interface.h

@@ -2,7 +2,7 @@
 #define BME280_H
 
 #include <stdint.h>
-//#include "bme280.h"
+#include "bme280_defs.h"
 
 /* AVR I/O pin definionts */
 #define BME_CSN_DDR   DDRB
@@ -10,6 +10,6 @@
 #define BME_CSN_PIN   PB6
 
 int8_t Initialize_BME280(void);
-void BME280_Get_Measurement(void);
+void BME280_Get_Measurement(struct bme280_data * data);
 
 #endif

weather-sensor/firmware/main.c

@@ -1,5 +1,3 @@
-//#define F_CPU 1000000UL  // Frequenz des Quarzes, ohne Quarz standardmäßig 1MHz
-
 #include <avr/io.h>
 #include <util/delay.h>
 #include <stdint.h>
@@ -10,6 +8,7 @@
 #include "nrf24l01.h"
 #include "nrf24l01_definitions.h"
 #include "bme280_interface.h"
+#include "bme280_defs.h"
 #include "uart_debug.h"
 
 //#define LED_DDR     DDRB        //DDRA, DDRB...
@@ -45,6 +44,7 @@ void Initialize_SPI(void);
 int main (void)
 {
 	char debugString[50] = "";
+	struct bme280_data sensorData;
 //	uint8_t testRegisterContent = 0x0A;
 //	uint8_t registerContent[5];
 //	char registerContentString[30];
@@ -86,8 +86,8 @@ int main (void)
 
 	while(1)
 	{
-		BME280_Get_Measurement();
-		Send_Test_Message();
+		BME280_Get_Measurement(&sensorData);
+		NRF24L01_Send_Message((uint8_t*)&sensorData, sizeof(sensorData));
 		_delay_ms(1000);
 	}
 }

weather-sensor/firmware/nrf24l01.c

@@ -107,9 +107,8 @@ void Configure_Transmission(void)
 	// TODO: set addresses for all data pipes
 }
 
-void Send_Test_Message(void)
+void NRF24L01_Send_Message(uint8_t *buffer, uint8_t length)
 {
-	uint8_t buffer[4] = {0xDE, 0xAD, 0xBE, 0xEF};
 	bool transmissionFinished = false;
 
 	STATUS_REGISTER statusRegisterContents = {.byte = 0x0};
@@ -123,7 +122,14 @@ void Send_Test_Message(void)
 	 * - Check if the FIFO is empty -> if not, flush it
 	 * - reset the interupts of the STATUS
 	 */
-	Write_Message_To_TX_FIFO(4, buffer);
+	
+	/* TODO: messages with more than 32 byte length */
+	if ((length > 32) || (length == 0))
+	{
+		return;
+	}
+
+	Write_Message_To_TX_FIFO(length, buffer);
 
 	/* Set CE = 1 for more than 10 us */
 	NRF_CE_PORT |= (1 << NRF_CE_PIN);

weather-sensor/firmware/nrf24l01.h

@@ -19,7 +19,7 @@ uint8_t Read_NRF_Register(uint8_t address, uint8_t * registerContents);
 void Write_NRF_Register(uint8_t address, uint8_t registerContents);
 void Send_Activate_Command(void);
 
-void Send_Test_Message(void);
+void NRF24L01_Send_Message(uint8_t *buffer, uint8_t length);
 void Write_Message_To_TX_FIFO(uint8_t length, uint8_t * buffer);
 void Set_TX_Address(uint32_t txAddress);
 void Set_RX_P0_Address(uint32_t rxAddress);