Light Show / Mbed OS alarm_slave_extended_SX1280

May 2021 test

Dependencies:   sx128x sx12xx_hal

main.cpp@2:bf201940a9db, 2018-01-26 (annotated)

Committer:
dudmuck
Date:
Fri Jan 26 01:19:39 2018 +0000
Revision:
2:bf201940a9db
Parent:
1:6a3a48d657a9
Child:
3:f81d64ff0164
support DISCO-L072CZ-LRWAN

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dudmuck 0:b6ec8db2edbf 1 #include "sx127x_lora.h"
dudmuck 0:b6ec8db2edbf 2
dudmuck 0:b6ec8db2edbf 3 DigitalOut myled(LED1);
dudmuck 2:bf201940a9db 4 #ifdef TARGET_DISCO_L072CZ_LRWAN1
dudmuck 2:bf201940a9db 5
dudmuck 2:bf201940a9db 6 SPI spi(PA_7, PA_6, PB_3); // mosi, miso, sclk
dudmuck 2:bf201940a9db 7 // dio0, dio1, nss, spi, rst
dudmuck 2:bf201940a9db 8 SX127x radio(PB_4, PB_1, PA_15, spi, PC_0);
dudmuck 2:bf201940a9db 9
dudmuck 2:bf201940a9db 10 #define CRF1 PA_1
dudmuck 2:bf201940a9db 11 #define CRF2 PC_2
dudmuck 2:bf201940a9db 12 #define CRF3 PC_1
dudmuck 2:bf201940a9db 13 DigitalOut Vctl1(CRF1);
dudmuck 2:bf201940a9db 14 DigitalOut Vctl2(CRF2);
dudmuck 2:bf201940a9db 15 DigitalOut Vctl3(CRF3);
dudmuck 2:bf201940a9db 16
dudmuck 2:bf201940a9db 17 void rfsw_callback()
dudmuck 2:bf201940a9db 18 {
dudmuck 2:bf201940a9db 19 if (radio.RegOpMode.bits.Mode == RF_OPMODE_TRANSMITTER) {
dudmuck 2:bf201940a9db 20 Vctl1 = 0;
dudmuck 2:bf201940a9db 21 if (radio.RegPaConfig.bits.PaSelect) {
dudmuck 2:bf201940a9db 22 Vctl2 = 0;
dudmuck 2:bf201940a9db 23 Vctl3 = 1;
dudmuck 2:bf201940a9db 24 } else {
dudmuck 2:bf201940a9db 25 Vctl2 = 1;
dudmuck 2:bf201940a9db 26 Vctl3 = 0;
dudmuck 2:bf201940a9db 27 }
dudmuck 2:bf201940a9db 28 } else {
dudmuck 2:bf201940a9db 29 if (radio.RegOpMode.bits.Mode == RF_OPMODE_RECEIVER || radio.RegOpMode.bits.Mode == RF_OPMODE_RECEIVER_SINGLE)
dudmuck 2:bf201940a9db 30 Vctl1 = 1;
dudmuck 2:bf201940a9db 31 else
dudmuck 2:bf201940a9db 32 Vctl1 = 0;
dudmuck 2:bf201940a9db 33
dudmuck 2:bf201940a9db 34 Vctl2 = 0;
dudmuck 2:bf201940a9db 35 Vctl3 = 0;
dudmuck 2:bf201940a9db 36 }
dudmuck 2:bf201940a9db 37 }
dudmuck 2:bf201940a9db 38
dudmuck 2:bf201940a9db 39 DigitalOut pinA(PB_12);
dudmuck 2:bf201940a9db 40 DigitalOut pinB(PB_13);
dudmuck 2:bf201940a9db 41 DigitalOut pinC(PB_14);
dudmuck 2:bf201940a9db 42 DigitalOut pinD(PB_15);
dudmuck 2:bf201940a9db 43 #else
dudmuck 2:bf201940a9db 44 SPI spi(D11, D12, D13); // mosi, miso, sclk
dudmuck 2:bf201940a9db 45 // dio0, dio1, nss, spi, rst
dudmuck 2:bf201940a9db 46 SX127x radio( D2, D3, D10, spi, A0); // sx1276 arduino shield
dudmuck 2:bf201940a9db 47
dudmuck 2:bf201940a9db 48 DigitalInOut rfsw(A4); // for SX1276 arduino shield
dudmuck 2:bf201940a9db 49
dudmuck 2:bf201940a9db 50 void rfsw_callback()
dudmuck 2:bf201940a9db 51 {
dudmuck 2:bf201940a9db 52 if (radio.RegOpMode.bits.Mode == RF_OPMODE_TRANSMITTER)
dudmuck 2:bf201940a9db 53 rfsw = 1;
dudmuck 2:bf201940a9db 54 else
dudmuck 2:bf201940a9db 55 rfsw = 0;
dudmuck 2:bf201940a9db 56 }
dudmuck 2:bf201940a9db 57
dudmuck 2:bf201940a9db 58 DigitalOut pinA(PC_3);
dudmuck 2:bf201940a9db 59 DigitalOut pinB(PC_2);
dudmuck 2:bf201940a9db 60 DigitalOut pinC(PC_6);
dudmuck 2:bf201940a9db 61 DigitalOut pinD(PC_8);
dudmuck 2:bf201940a9db 62 #endif /* !TARGET_DISCO_L072CZ_LRWAN1 */
dudmuck 2:bf201940a9db 63
dudmuck 2:bf201940a9db 64 /**********************************************************************/
dudmuck 0:b6ec8db2edbf 65 SX127x_lora lora(radio);
dudmuck 2:bf201940a9db 66
dudmuck 1:6a3a48d657a9 67 DigitalOut* pin;
dudmuck 0:b6ec8db2edbf 68 Timeout to;
dudmuck 0:b6ec8db2edbf 69
dudmuck 1:6a3a48d657a9 70 #define PIN_ASSERT_us 500000
dudmuck 1:6a3a48d657a9 71
dudmuck 2:bf201940a9db 72 #define CMD_PINA 0x02
dudmuck 2:bf201940a9db 73 #define CMD_PINB 0x03
dudmuck 2:bf201940a9db 74 #define CMD_PINC 0x06
dudmuck 2:bf201940a9db 75 #define CMD_PIND 0x08
dudmuck 0:b6ec8db2edbf 76
dudmuck 0:b6ec8db2edbf 77 void alarm_pin_clr()
dudmuck 0:b6ec8db2edbf 78 {
dudmuck 1:6a3a48d657a9 79 pin->write(0);
dudmuck 0:b6ec8db2edbf 80 }
dudmuck 0:b6ec8db2edbf 81
dudmuck 0:b6ec8db2edbf 82 void alarm_pin_set()
dudmuck 0:b6ec8db2edbf 83 {
dudmuck 1:6a3a48d657a9 84 pin->write(1);
dudmuck 0:b6ec8db2edbf 85 to.attach_us(&alarm_pin_clr, PIN_ASSERT_us);
dudmuck 0:b6ec8db2edbf 86 }
dudmuck 0:b6ec8db2edbf 87
dudmuck 0:b6ec8db2edbf 88 static uint16_t crc_ccitt( uint8_t *buffer, uint16_t length )
dudmuck 0:b6ec8db2edbf 89 {
dudmuck 0:b6ec8db2edbf 90 // The CRC calculation follows CCITT
dudmuck 0:b6ec8db2edbf 91 const uint16_t polynom = 0x1021;
dudmuck 0:b6ec8db2edbf 92 // CRC initial value
dudmuck 0:b6ec8db2edbf 93 uint16_t crc = 0x0000;
dudmuck 0:b6ec8db2edbf 94
dudmuck 0:b6ec8db2edbf 95 if( buffer == NULL )
dudmuck 0:b6ec8db2edbf 96 {
dudmuck 0:b6ec8db2edbf 97 return 0;
dudmuck 0:b6ec8db2edbf 98 }
dudmuck 0:b6ec8db2edbf 99
dudmuck 0:b6ec8db2edbf 100 for( uint16_t i = 0; i < length; ++i )
dudmuck 0:b6ec8db2edbf 101 {
dudmuck 0:b6ec8db2edbf 102 crc ^= ( uint16_t ) buffer[i] << 8;
dudmuck 0:b6ec8db2edbf 103 for( uint16_t j = 0; j < 8; ++j )
dudmuck 0:b6ec8db2edbf 104 {
dudmuck 0:b6ec8db2edbf 105 crc = ( crc & 0x8000 ) ? ( crc << 1 ) ^ polynom : ( crc << 1 );
dudmuck 0:b6ec8db2edbf 106 }
dudmuck 0:b6ec8db2edbf 107 }
dudmuck 0:b6ec8db2edbf 108
dudmuck 0:b6ec8db2edbf 109 return crc;
dudmuck 0:b6ec8db2edbf 110 }
dudmuck 0:b6ec8db2edbf 111
dudmuck 0:b6ec8db2edbf 112 void get_alarm()
dudmuck 0:b6ec8db2edbf 113 {
dudmuck 0:b6ec8db2edbf 114 uint16_t rx_crc, crc = crc_ccitt(radio.rx_buf, 5);
dudmuck 0:b6ec8db2edbf 115 rx_crc = radio.rx_buf[5];
dudmuck 0:b6ec8db2edbf 116 rx_crc <<= 8;
dudmuck 0:b6ec8db2edbf 117 rx_crc += radio.rx_buf[6];
dudmuck 0:b6ec8db2edbf 118 //printf("%u) crc rx:%04x, calc:%04x\r\n", lora.RegRxNbBytes, rx_crc, crc);
dudmuck 0:b6ec8db2edbf 119 if (crc == rx_crc) {
dudmuck 1:6a3a48d657a9 120 uint8_t c = radio.rx_buf[0];
dudmuck 1:6a3a48d657a9 121 //if (radio.rx_buf[0] == CMD_ALARM)
dudmuck 2:bf201940a9db 122 if (c == CMD_PINA || c == CMD_PINB || c == CMD_PINC || c == CMD_PIND) {
dudmuck 0:b6ec8db2edbf 123 unsigned delay;
dudmuck 0:b6ec8db2edbf 124 delay = radio.rx_buf[1];
dudmuck 0:b6ec8db2edbf 125 delay <<= 8;
dudmuck 0:b6ec8db2edbf 126 delay += radio.rx_buf[2];
dudmuck 0:b6ec8db2edbf 127 delay <<= 8;
dudmuck 0:b6ec8db2edbf 128 delay += radio.rx_buf[3];
dudmuck 0:b6ec8db2edbf 129 delay <<= 8;
dudmuck 0:b6ec8db2edbf 130 delay += radio.rx_buf[4];
dudmuck 1:6a3a48d657a9 131 switch (c) {
dudmuck 2:bf201940a9db 132 case CMD_PINA: pin = &pinA; break;
dudmuck 2:bf201940a9db 133 case CMD_PINB: pin = &pinB; break;
dudmuck 2:bf201940a9db 134 case CMD_PINC: pin = &pinC; break;
dudmuck 2:bf201940a9db 135 case CMD_PIND: pin = &pinD; break;
dudmuck 1:6a3a48d657a9 136 }
dudmuck 0:b6ec8db2edbf 137 to.attach_us(&alarm_pin_set, delay);
dudmuck 0:b6ec8db2edbf 138 printf("delay:%u\r\n", delay);
dudmuck 0:b6ec8db2edbf 139 } else
dudmuck 0:b6ec8db2edbf 140 printf("cmd? %02x\r\n", radio.rx_buf[0]);
dudmuck 0:b6ec8db2edbf 141 } else
dudmuck 0:b6ec8db2edbf 142 printf("crc fail %04x, %04x\r\n", rx_crc, crc);
dudmuck 0:b6ec8db2edbf 143 }
dudmuck 0:b6ec8db2edbf 144
dudmuck 0:b6ec8db2edbf 145 int main()
dudmuck 0:b6ec8db2edbf 146 {
dudmuck 0:b6ec8db2edbf 147 printf("\r\nreset-rx\r\n");
dudmuck 0:b6ec8db2edbf 148 radio.rf_switch = rfsw_callback;
dudmuck 0:b6ec8db2edbf 149
dudmuck 0:b6ec8db2edbf 150 radio.set_frf_MHz(910.8);
dudmuck 0:b6ec8db2edbf 151 lora.enable();
dudmuck 0:b6ec8db2edbf 152 lora.setBw_KHz(500);
dudmuck 0:b6ec8db2edbf 153 lora.setSf(11);
dudmuck 0:b6ec8db2edbf 154
dudmuck 2:bf201940a9db 155 radio.RegPaConfig.octet = radio.read_reg(REG_PACONFIG);
dudmuck 2:bf201940a9db 156 #ifdef TARGET_DISCO_L072CZ_LRWAN1
dudmuck 2:bf201940a9db 157 radio.RegPaConfig.bits.PaSelect = 1;
dudmuck 2:bf201940a9db 158 #else
dudmuck 0:b6ec8db2edbf 159 /* RFO or PABOOST choice:
dudmuck 0:b6ec8db2edbf 160 * SX1276 shield: RFO if using 900MHz, or PA_BOOST if using 433MHz
dudmuck 0:b6ec8db2edbf 161 */
dudmuck 0:b6ec8db2edbf 162 rfsw.input();
dudmuck 0:b6ec8db2edbf 163 if (rfsw.read()) {
dudmuck 0:b6ec8db2edbf 164 printf("LAS\r\n");
dudmuck 0:b6ec8db2edbf 165 /* LAS HF=PA_BOOST LF=RFO */
dudmuck 0:b6ec8db2edbf 166 if (radio.HF)
dudmuck 0:b6ec8db2edbf 167 radio.RegPaConfig.bits.PaSelect = 1;
dudmuck 0:b6ec8db2edbf 168 else
dudmuck 0:b6ec8db2edbf 169 radio.RegPaConfig.bits.PaSelect = 0;
dudmuck 0:b6ec8db2edbf 170 } else {
dudmuck 0:b6ec8db2edbf 171 /* MAS shield board, only RFO TX */
dudmuck 0:b6ec8db2edbf 172 radio.RegPaConfig.bits.PaSelect = 0;
dudmuck 0:b6ec8db2edbf 173 printf("MAS\r\n");
dudmuck 0:b6ec8db2edbf 174 }
dudmuck 0:b6ec8db2edbf 175 rfsw.output();
dudmuck 2:bf201940a9db 176 #endif /* !TARGET_DISCO_L072CZ_LRWAN1 */
dudmuck 0:b6ec8db2edbf 177 radio.write_reg(REG_PACONFIG, radio.RegPaConfig.octet);
dudmuck 0:b6ec8db2edbf 178
dudmuck 0:b6ec8db2edbf 179 lora.start_rx(RF_OPMODE_RECEIVER);
dudmuck 0:b6ec8db2edbf 180
dudmuck 0:b6ec8db2edbf 181 for (;;) {
dudmuck 0:b6ec8db2edbf 182 if (lora.service() == SERVICE_READ_FIFO) {
dudmuck 0:b6ec8db2edbf 183 /*int i;
dudmuck 0:b6ec8db2edbf 184 for (i = 0; i < lora.RegRxNbBytes; i++) {
dudmuck 0:b6ec8db2edbf 185 printf("%02x ", radio.rx_buf[i]);
dudmuck 0:b6ec8db2edbf 186 }
dudmuck 0:b6ec8db2edbf 187 printf("\r\n");*/
dudmuck 0:b6ec8db2edbf 188 get_alarm();
dudmuck 0:b6ec8db2edbf 189 }
dudmuck 0:b6ec8db2edbf 190 }
dudmuck 0:b6ec8db2edbf 191 }