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/*
1		/*
2		* Project: nRF905 AVR/Arduino Library/Driver
3		* Author: Zak Kemble, contact@zakkemble.co.uk
4		* Copyright: (C) 2013 by Zak Kemble
5		* License: GNU GPL v3 (see License.txt)
6		* Web: http://blog.zakkemble.co.uk/nrf905-avrarduino-librarydriver/
7		*/
8
9		/*
10		* Turn the nRF905 on to transmit some data, wait for a reply,
11		* turn off and wait for a second.
12		* Output power is set to the lowest setting, receive sensitivity is
13		* lowered and uses the power up/down feature of the nRF905.
14		*
15		* 7 -> CE
16		* 8 -> PWR
17		* 9 -> TXE
18		* 2 -> CD
19		* 3 -> DR
20		* 10 -> CSN
21		* 12 -> SO
22		* 11 -> SI
23		* 13 -> SCK
24		*/
25
26		#include <nRF905.h>
27		#include <SPI.h>
28
29		#define RXADDR {0xFE, 0x4C, 0xA6, 0xE5} // Address of this device (4 bytes)
30		#define TXADDR {0x58, 0x6F, 0x2E, 0x10} // Address of device to send to (4 bytes)
31
32		#define TIMEOUT 1000 // 1 second ping timeout
33
34		void setup()
35		{
36		// Start up
37		nRF905_init();
38
39		// Set address of this device
40		byte addr[] = RXADDR;
41		nRF905_setRXAddress(addr);
42
43		// Lowest transmit level -10db
44		nRF905_setTransmitPower(NRF905_PWR_n10);
45
46		// Reduce receive sensitivity to save a few mA
47		nRF905_setLowRxPower(NRF905_LOW_RX_ENABLE);
48
49		// Put into receive mode
50		nRF905_receive();
51
52		Serial.begin(9600);
53
54		Serial.println(F("Client started"));
55		}
56
57		void loop()
58		{
59		static byte counter;
60
61		// Make data
62		char data[NRF905_MAX_PAYLOAD] = "test test";
63
64		// Turn on module
65		nRF905_powerUp();
66
67		unsigned long startTime = millis();
68
69		// Set address of device to send to
70		byte addr[] = TXADDR;
71		nRF905_setTXAddress(addr);
72
73		// Set payload data
74		nRF905_setData(data, sizeof(data));
75	-	nRF905_setData((byte*)data, sizeof(data));
75	+
76		// Send payload (send fails if other transmissions are going on, keep trying until success)
77		while(!nRF905_send());
78
79		// Put into receive mode
80		nRF905_receive();
81
82		// Make buffer for reply
83		char buffer[NRF905_MAX_PAYLOAD];
84		bool success;
85
86		// Wait for reply with timeout
87		unsigned long sendStartTime = millis();
88		while(1)
89		{
90		success = nRF905_getData(buffer, sizeof(buffer));
91		if(success)// Got data
92		break;
93
94		// Timeout
95		if(millis() - sendStartTime > TIMEOUT)
96		break;
97		}
98
99		// Turn off module
100		nRF905_powerDown();
101
102		if(success)
103		{
104		unsigned int totalTime = millis() - startTime;
105		Serial.print(F("Ping time: "));
106		Serial.print(totalTime);
107		Serial.println(F("ms"));
108
109		// Show raw data
110		Serial.print(F("Raw: "));
111		Serial.write((byte*)buffer, sizeof(buffer));
112	-	nRF905_getData(buffer, sizeof(buffer));
112	+	Serial.println();
113	-	if(strcmp((char*)buffer, "test test") == 0)
113	+
114		// Printout ping contents
115	-	Serial.println("OK");
115	+
116		if(strncmp(buffer, "test test", sizeof(buffer)) == 0)
117	-	else
117	+	Serial.println("OK");
118		else
119	-	Serial.println("Fail");
119	+	Serial.println("Fail");
120		}
121		else
122		Serial.println(F("Ping timed out"));
123
124		delay(1000);
125		}