Diff: radio_lr1110.cpp

Revision:

17:5f34cbe2ac53

Child:

21:96db08266089

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/radio_lr1110.cpp	Mon Jun 01 15:59:56 2020 -0700
@@ -0,0 +1,281 @@
+#include "radio.h"
+#ifdef SX1265_H 
+#include "SPIu.h"
+
+#ifdef TARGET_FF_ARDUINO
+    SPI spi(D11, D12, D13); // mosi, miso, sclk
+                   //spi, nss, busy, dio9, nreset
+    SX1265 Radio::radio(spi, D7, D3, D5, A0);
+
+    static void initRfSwDIO()
+    {
+        /*stat_t stat;*/
+        uint8_t dioBuf[8];
+        /* antenna truth table
+         * V1    V2    port
+         *  0     0    shutdown
+         *  1     0    J2   rx RFI
+         *  0     1    J1   HP tx RFO
+         *  1     1    J3   LP tx RFO
+         * DIO5  DIO6
+         */
+        dioBuf[  DIO_en_IDX] = DIO5_BIT | DIO6_BIT;
+        dioBuf[DIO_stby_IDX] = 0;
+        dioBuf[  DIO_rx_IDX] = DIO5_BIT;
+        dioBuf[  DIO_tx_IDX] = DIO5_BIT | DIO6_BIT;
+        dioBuf[DIO_txhp_IDX] = DIO6_BIT;
+        dioBuf[DIO_gnss_IDX] = 0;
+        dioBuf[DIO_wifi_IDX] = 0;
+        /*stat.word =*/ Radio::radio.xfer(OPCODE_SET_DIO_AS_RFSWITCH, 8, 0, dioBuf);
+    }
+#else
+    /* declare pins for form-factor */
+    #error non-ardiuno-form-factor
+#endif /* TARGET_FF_ARDUINO */
+
+uint8_t gfsk_pp_buf[9];
+uint8_t gfsk_mp_buf[10];
+uint8_t lora_pp_buf[6];
+uint8_t lora_mp_buf[4];
+
+const RadioEvents_t* RadioEvents;
+LowPowerTimer Radio::lpt;
+volatile us_timestamp_t Radio::irqAt;
+uint8_t Radio::loraTimeoutSymbols;
+
+void Radio::LoRaPacketConfig(unsigned preambleLen, bool fixLen, bool crcOn, bool invIQ)
+{
+    /*stat_t stat;*/
+    if (radio.getPacketType() != PACKET_TYPE_LORA)
+        radio.setPacketType(PACKET_TYPE_LORA);
+
+    radio.to_big_endian16(preambleLen, lora_pp_buf); 
+    lora_pp_buf[2] = fixLen;
+    /* lora_pp_buf[3] =  set when txing, initialized to zero in Init */
+    lora_pp_buf[4] = crcOn;
+    lora_pp_buf[5] = invIQ;
+    /*stat.word =*/ radio.xfer(OPCODE_SET_PACKET_PARAM, 6, 0, lora_pp_buf);
+}
+
+void Radio::set_tx_dbm(int8_t dbm)
+{
+    /*stat_t stat;*/
+    uint8_t buf[4];
+    int8_t txpower;
+    unsigned PaSel, RegPaSupply, PaDutyCycle, PaHPSel;
+
+    if (dbm > 20) {
+        txpower = 22;
+        PaSel = 1;
+        RegPaSupply = 1;
+        PaDutyCycle = 4;
+        PaHPSel = 7;
+    } else if (dbm > 17) {
+        txpower = 22;
+        PaSel = 1;
+        RegPaSupply = 1;
+        PaDutyCycle = 2;
+        PaHPSel = 7;
+    } else if (dbm > 15) {
+        txpower = 22;
+        PaSel = 1;
+        RegPaSupply = 1;
+        PaDutyCycle = 4;
+        PaHPSel = 3;
+    } else {
+        txpower = 14;
+        PaSel = 0;
+        RegPaSupply = 0;
+        if (dbm > 14)
+            PaDutyCycle = 7;
+        else if (dbm > 10)
+            PaDutyCycle = 4;
+        else
+            PaDutyCycle = 0;
+        PaHPSel = 0;
+    }
+
+    buf[0] = PaSel;
+    buf[1] = RegPaSupply;
+    buf[2] = PaDutyCycle;
+    buf[3] = PaHPSel;
+    /*stat.word =*/ radio.xfer(OPCODE_SET_PA_CONFIG, 4, 0, buf);
+
+    buf[0] = txpower;
+    buf[1] = 4;
+    /*stat.word =*/ radio.xfer(OPCODE_SET_TXPARAMS, 2, 0, buf);
+}
+
+void Radio::SetChannel(unsigned hz)
+{
+    /*stat_t stat;*/
+    uint8_t buf[4];
+    radio.to_big_endian32(hz, buf);
+    /*stat.word =*/ radio.xfer(OPCODE_SET_RF_FREQ_HZ, 4, 0, buf);
+}
+
+void Radio::Standby()
+{
+    /*stat_t stat;*/
+    uint8_t buf = 0;    // 0=rc, 1=xosc
+    /*stat.word =*/ radio.xfer(OPCODE_SET_STANDBY, 1, 0, &buf);
+}
+
+void Radio::LoRaModemConfig(unsigned bwKHz, uint8_t sf, uint8_t cr)
+{
+    /*stat_t stat;*/
+    uint8_t buf[4];
+    uint8_t ldro = 0;
+
+    if (radio.getPacketType() != PACKET_TYPE_LORA)
+        radio.setPacketType(PACKET_TYPE_LORA);
+
+    if (bwKHz > 500)
+        buf[1] = LORA_BW_1000KHz;
+    else if (bwKHz > 250)
+        buf[1] = LORA_BW_500KHz;
+    else if (bwKHz > 125) {
+        buf[1] = LORA_BW_250KHz;
+    } else if (bwKHz > 80) {
+        buf[1] = LORA_BW_125KHz;
+        if (sf > 11)
+            ldro = 1;
+    } else if (bwKHz > 16) {
+        buf[1] = LORA_BW_31_25KHz;
+        if (sf > 10)
+            ldro = 1;
+    } else if (bwKHz > 8) {
+        buf[1] = LORA_BW_15_6KHz;
+        if (sf > 9)
+            ldro = 1;
+    } else {
+        buf[1] = LORA_BW_7_8KHz;
+        if (sf > 8)
+            ldro = 1;
+    }
+
+    buf[0] = sf;
+    buf[2] = cr;
+    buf[3] = ldro;
+    /*stat.word =*/ radio.xfer(OPCODE_SET_MODULATION, 4, 0, buf);
+}
+
+int Radio::Send(uint8_t size, timestamp_t maxListenTime, timestamp_t channelFreeTime, int rssiThresh)
+{
+    /*stat_t stat;*/
+    uint8_t pktType;
+
+    pktType = radio.getPacketType();
+    if (pktType == PACKET_TYPE_LORA) {
+        lora_pp_buf[3] = size;
+        /*stat.word =*/ radio.xfer(OPCODE_SET_PACKET_PARAM, 6, 0, lora_pp_buf);
+    } else if (pktType == PACKET_TYPE_GFSK) {
+        gfsk_pp_buf[6] = size;
+        /*stat.word =*/ radio.xfer(OPCODE_SET_PACKET_PARAM, 9, 0, gfsk_pp_buf);
+    }
+
+    /* TODO: LBT */
+
+    radio.start_tx(size);
+    return 0;
+}
+
+void Radio::service()
+{
+    irq_t irq;
+    irq.dword = radio.service();
+    if (irq.dword != 0) {
+    }
+}
+
+void Radio::dio9_top_half()
+{
+    irqAt = lpt.read_us();
+
+    if (RadioEvents->DioPin_top_half)
+        RadioEvents->DioPin_top_half();
+
+    if (radio.chipMode == CHIPMODE_TX) {
+        /* TxDone handling requires low latency */
+        if (RadioEvents->TxDone_topHalf) {
+            RadioEvents->TxDone_topHalf();
+        } 
+    } else {
+#ifdef RX_INDICATION
+        RX_INDICATION = 0;
+#endif
+    }
+}
+
+void Radio::timeout_callback(bool tx)
+{
+    if (!tx) {
+        if (RadioEvents->RxTimeout)
+            RadioEvents->RxTimeout();
+    } // else TODO tx timeout
+}
+
+void Radio::rx_done(uint8_t size, float rssi, float snr)
+{
+    RadioEvents->RxDone(size, rssi, snr);
+}
+
+void Radio::txDoneBottom()
+{
+    if (RadioEvents->TxDone_botHalf)
+        RadioEvents->TxDone_botHalf();
+}
+
+void Radio::Init(const RadioEvents_t* e, unsigned spi_hz)
+{
+    /* initialize payload length to zero in packet params */
+    lora_pp_buf[3] = 0;
+    gfsk_pp_buf[6] = 0;
+
+    radio.txDone = txDoneBottom;
+    radio.rxDone = rx_done;
+    radio.timeout = timeout_callback;
+    //radio.chipModeChange = chipModeChange;
+    radio.dio9_topHalf = dio9_top_half;
+
+    RadioEvents = e;
+    lpt.start();
+
+    spi.frequency(spi_hz);
+
+    radio.hw_reset();
+
+    initRfSwDIO();
+}
+
+void Radio::SetLoRaSymbolTimeout(uint16_t symbs)
+{
+    /*stat_t stat;*/
+    if (radio.getPacketType() != PACKET_TYPE_LORA)
+        radio.setPacketType(PACKET_TYPE_LORA);
+
+    loraTimeoutSymbols = symbs;
+    /*stat.word =*/ radio.xfer(OPCODE_SET_LORA_SYNC_TIMEOUT, 1, 0, &loraTimeoutSymbols);
+}
+
+void Radio::Rx(unsigned timeout)
+{
+    /*stat_t stat;*/
+    uint8_t buf[3];
+    unsigned rx_timeout;
+
+    if (radio.getPacketType() == PACKET_TYPE_LORA) {
+        /*stat.word =*/ radio.xfer(OPCODE_SET_LORA_SYNC_TIMEOUT, 1, 0, &loraTimeoutSymbols);
+    }
+
+    if (timeout == 0)
+        rx_timeout = 0xffffff;  // receive until instructed otherwise
+    else
+        rx_timeout = timeout;
+
+    radio.to_big_endian24(rx_timeout, buf);
+    /*stat.word =*/ radio.xfer(OPCODE_SET_RX, 3, 0, buf);
+
+}
+
+#endif /* ..SX126x_H */