lora2 - lora2 Driver module (supports multi-hanging)

Adapted Air780E Air780EP

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Tip

This library has its own demo,click this link to view lora2 demo examples

Constant

constant	type	explanation
lora2.SLEEP	number	SLEEP Mode
lora2.STANDBY	number	STANDBY Mode

lora2.init(ic, loraconfig,spiconfig)

lora Initialization

Parameters

Incoming Value Type	Explanation
string	lora Model, currently supported： llcc68 sx1268
table	lora Configuration parameters, device-specific

Return Value

return value type	explanation
userdata	Returns the lora object if successful, otherwise nil

Examples

spi_lora = spi.deviceSetup(spi_id,pin_cs,0,0,8,10*1000*1000,spi.MSB,1,0)
lora_device = lora2.init("llcc68",{res = pin_reset,busy = pin_busy,dio1 = pin_dio1},spi_lora)

---

lora_device:set_channel(freq)

Set channel frequency

Parameters

Incoming Value Type	Explanation
number	Frequency

Return Value

None

Examples

lora_device:set_channel(433000000)

---

lora_device:set_txconfig(txconfig)

lora Configure Send Parameters

Parameters

Incoming Value Type	Explanation
table	lora Send configuration parameters, device-specific

Return Value

None

Examples

lora_device:set_txconfig(
    {
        mode=1,
        power=22,
        fdev=0,
        bandwidth=0,
        datarate=9,
        coderate=4,
        preambleLen=8,
        fixLen=false,
        crcOn=true,
        freqHopOn=0,
        hopPeriod=0,
        iqInverted=false,
        timeout=3000
    }
)

---

lora_device:set_rxconfig(set_rxconfig)

lora Configure Receive Parameters

Parameters

Incoming Value Type	Explanation
table	lora Receive configuration parameters, which are device-specific

Return Value

None

Examples

lora_device:set_rxconfig(
    {
        mode=1,
        bandwidth=0,
        datarate=9,
        coderate=4,
        bandwidthAfc=0,
        preambleLen=8,
        symbTimeout=0,
        fixLen=false,
        payloadLen=0,
        crcOn=true,
        freqHopOn=0,
        hopPeriod=0,
        iqInverted=false,
        rxContinuous=false
    }
)

---

lora_device:send(data)

Send data

Parameters

Incoming Value Type	Explanation
string	Data written

Return Value

None

Examples

lora_device:send("PING")

---

lora_device:recv(timeout)

Open data collection

Parameters

Incoming Value Type	Explanation
number	Timeout, default 1000 unit ms

Return Value

None

Examples

sys.subscribe("LORA_RX_DONE", function(data, size)
    log.info("LORA_RX_DONE: ", data, size)
    lora_device:send("PING")
end)
lora_device:recv(1000)

---

lora_device:mode(mode)

Set the entry mode (sleep, normal, etc.)

Parameters

Incoming Value Type	Explanation
number	Mode Normal Mode: lora.STANDBY Sleep Mode: lora.SLEEP Default to Normal Mode

Return Value

None

Examples

lora_device:mode(lora.STANDBY)

---

lora_device:on(cb)

Register lora callback

Parameters

Incoming Value Type	Explanation
function	cb lora callback, parameters include lora_device, event, data, size

Return Value

return value type	explanation
nil	No return value

Examples

lora_device:on(function(lora_device, event, data, size)
    log.info("lora", "event", event, lora_device, data, size)
    if event == "tx_done" then
        lora_device:recv(1000)
    elseif event == "rx_done" then
        lora_device:send("PING")
    elseif event == "tx_timeout" then

    elseif event == "rx_timeout" then
        lora_device:recv(1000)
    elseif event == "rx_error" then

    end
end)
--[[
event The possible values are
    tx_done         -- Send Complete
    rx_done         -- Receive Completed
    tx_timeout      -- Send Timeout
    rx_timeout      -- Receive Timeout
    rx_error        -- Receive Error
]]

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