1 /*!
2 * \file main.c
3 *
4 * \brief Radio sensitivity test
5 *
6 * \remark When LED1 stops blinking LoRa packets aren't received any more and
7 * the sensitivity level has been reached.
8 * By reading the RF generator output power we can estimate the board
9 * sensitivity
10 *
11 * \copyright Revised BSD License, see section \ref LICENSE.
12 *
13 * \code
14 * ______ _
15 * / _____) _ | |
16 * ( (____ _____ ____ _| |_ _____ ____| |__
17 * \____ \| ___ | (_ _) ___ |/ ___) _ \
18 * _____) ) ____| | | || |_| ____( (___| | | |
19 * (______/|_____)_|_|_| \__)_____)\____)_| |_|
20 * (C)2013-2017 Semtech
21 *
22 * \endcode
23 *
24 * \author Miguel Luis ( Semtech )
25 *
26 * \author Gregory Cristian ( Semtech )
27 *
28 * \author Marten Lootsma(TWTG) on behalf of Microchip/Atmel (c)2017
29 */
30 #include "board.h"
31 #include "gpio.h"
32 #include "timer.h"
33 #include "radio.h"
34
35 #if defined( REGION_AS923 )
36
37 #define RF_FREQUENCY 923000000 // Hz
38
39 #elif defined( REGION_AU915 )
40
41 #define RF_FREQUENCY 915000000 // Hz
42
43 #elif defined( REGION_CN470 )
44
45 #define RF_FREQUENCY 470000000 // Hz
46
47 #elif defined( REGION_CN779 )
48
49 #define RF_FREQUENCY 779000000 // Hz
50
51 #elif defined( REGION_EU433 )
52
53 #define RF_FREQUENCY 433000000 // Hz
54
55 #elif defined( REGION_EU868 )
56
57 #define RF_FREQUENCY 868000000 // Hz
58
59 #elif defined( REGION_KR920 )
60
61 #define RF_FREQUENCY 920000000 // Hz
62
63 #elif defined( REGION_IN865 )
64
65 #define RF_FREQUENCY 865000000 // Hz
66
67 #elif defined( REGION_US915 )
68
69 #define RF_FREQUENCY 915000000 // Hz
70
71 #elif defined( REGION_RU864 )
72
73 #define RF_FREQUENCY 864000000 // Hz
74
75 #else
76 #error "Please define a frequency band in the compiler options."
77 #endif
78
79 #if defined( USE_MODEM_LORA )
80
81 #define LORA_BANDWIDTH 0 // [0: 125 kHz,
82 // 1: 250 kHz,
83 // 2: 500 kHz,
84 // 3: Reserved]
85 #define LORA_SPREADING_FACTOR 10 // [SF7..SF12]
86 #define LORA_CODINGRATE 1 // [1: 4/5,
87 // 2: 4/6,
88 // 3: 4/7,
89 // 4: 4/8]
90 #define LORA_SYMBOL_TIMEOUT 5 // Symbols
91 #define LORA_PREAMBLE_LENGTH 8 // Same for Tx and Rx
92 #define LORA_FIX_LENGTH_PAYLOAD_ON false
93 #define LORA_IQ_INVERSION_ON false
94
95 #elif defined( USE_MODEM_FSK )
96
97 #define FSK_DATARATE 50000 // bps
98 #define FSK_BANDWIDTH 50000 // Hz
99 #define FSK_AFC_BANDWIDTH 83333 // Hz
100 #define FSK_PREAMBLE_LENGTH 5 // Same for Tx and Rx
101 #define FSK_FIX_LENGTH_PAYLOAD_ON false
102
103 #else
104 #error "Please define a modem in the compiler options."
105 #endif
106
107 /*!
108 * Radio events function pointer
109 */
110 static RadioEvents_t RadioEvents;
111
112 /*!
113 * LED GPIO pins objects
114 */
115 extern Gpio_t Led1;
116
117 /*!
118 * \brief Function to be executed on Radio Rx Done event
119 */
120 void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr );
121
122 /*!
123 * Main application entry point.
124 */
main(void)125 int main( void )
126 {
127 // Target board initialization
128 BoardInitMcu( );
129 BoardInitPeriph( );
130
131 // Radio initialization
132 RadioEvents.RxDone = OnRxDone;
133
134 Radio.Init( &RadioEvents );
135
136 Radio.SetChannel( RF_FREQUENCY );
137
138 #if defined( USE_MODEM_LORA )
139
140 Radio.SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR,
141 LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH,
142 LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON,
143 0, true, 0, 0, LORA_IQ_INVERSION_ON, true );
144
145 Radio.SetMaxPayloadLength( MODEM_LORA, 255 );
146
147 #elif defined( USE_MODEM_FSK )
148
149 Radio.SetRxConfig( MODEM_FSK, FSK_BANDWIDTH, FSK_DATARATE,
150 0, FSK_AFC_BANDWIDTH, FSK_PREAMBLE_LENGTH,
151 0, FSK_FIX_LENGTH_PAYLOAD_ON, 0, true,
152 0, 0, false, true );
153
154 Radio.SetMaxPayloadLength( MODEM_FSK, 255 );
155
156 #else
157 #error "Please define a frequency band in the compiler options."
158 #endif
159
160 Radio.Rx( 0 ); // Continuous Rx
161
162 while( 1 )
163 {
164 // Tick the RTC to execute callback in context of the main loop (in stead of the IRQ)
165 TimerProcess( );
166
167 BoardLowPowerHandler( );
168 }
169 }
170
OnRxDone(uint8_t * payload,uint16_t size,int16_t rssi,int8_t snr)171 void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr )
172 {
173 static uint8_t ledState = 1;
174 // Toggle LED 1
175 ledState ^= 1;
176 GpioWrite( &Led1, ledState );
177 }
178
