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[example] Adding SX128x LoRa example
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// coding: utf-8 | ||
/* | ||
* Copyright (c) 2023, Rasmus Kleist Hørlyck Sørensen | ||
* | ||
* This file is part of the modm project. | ||
* | ||
* This Source Code Form is subject to the terms of the Mozilla Public | ||
* License, v. 2.0. If a copy of the MPL was not distributed with this | ||
* file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
*/ | ||
// ---------------------------------------------------------------------------- | ||
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#include <atomic> | ||
#include <cstring> | ||
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#include <modm/board.hpp> | ||
#include <modm/debug/logger/logger.hpp> | ||
#include <modm/driver/radio/sx128x.hpp> | ||
#include <modm/platform.hpp> | ||
#include <modm/processing.hpp> | ||
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using Sck = GpioA5; | ||
using Miso = GpioA6; | ||
using Mosi = GpioA7; | ||
using SpiMaster = modm::platform::SpiMaster1; | ||
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namespace | ||
{ | ||
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namespace rx | ||
{ | ||
std::atomic_bool dio1 = false; | ||
std::atomic_bool dio2 = false; | ||
std::atomic_bool dio3 = false; | ||
} | ||
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namespace tx | ||
{ | ||
std::atomic_bool dio1 = false; | ||
std::atomic_bool dio2 = false; | ||
std::atomic_bool dio3 = false; | ||
} | ||
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static constexpr modm::sx128x::LoRa::ModulationParams modulationParams = { | ||
.spreadingFactor = modm::sx128x::LoRa::ModulationParams::SpreadingFactor::Sf9, | ||
.bandwidth = modm::sx128x::LoRa::ModulationParams::Bandwidth::Bw400, | ||
.codingRate = modm::sx128x::LoRa::ModulationParams::CodingRate::Cr_Li_4_7 | ||
}; | ||
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static constexpr modm::sx128x::LoRa::PacketParams packetParams = { | ||
.preambleLength = 12, | ||
.headerType = modm::sx128x::LoRa::PacketParams::HeaderType::Explicit, | ||
.payloadLength = 4, | ||
.crc = modm::sx128x::LoRa::PacketParams::Crc::Enable, | ||
.invertIq = modm::sx128x::LoRa::PacketParams::InvertIq::Standard | ||
}; | ||
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} | ||
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class RxThread : public modm::sx128x, public modm::pt::Protothread | ||
{ | ||
using Reset = GpioB3; | ||
using Busy = GpioB4; | ||
using Dio1 = GpioB5; | ||
using Dio2 = GpioB6; | ||
using Dio3 = GpioB7; | ||
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using Nss = GpioD2; | ||
using Transport = modm::Sx128xTransportSpi<SpiMaster, Nss>; | ||
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public: | ||
RxThread() {} | ||
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inline bool | ||
run() | ||
{ | ||
PT_BEGIN(); | ||
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Nss::setOutput(modm::Gpio::High); | ||
Reset::setOutput(modm::Gpio::Low); | ||
Busy::setInput(modm::platform::Gpio::InputType::PullDown); | ||
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Dio1::setInput(modm::platform::Gpio::InputType::PullDown); | ||
Exti::connect<Dio1>(Exti::Trigger::RisingEdge, [](uint8_t) { rx::dio1 = true; }); | ||
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Dio2::setInput(modm::platform::Gpio::InputType::PullDown); | ||
Exti::connect<Dio2>(Exti::Trigger::RisingEdge, [](uint8_t) { rx::dio2 = true; }); | ||
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Dio3::setInput(modm::platform::Gpio::InputType::PullDown); | ||
Exti::connect<Dio3>(Exti::Trigger::RisingEdge, [](uint8_t) { rx::dio3 = true; }); | ||
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PT_CALL(radio.reset()); | ||
PT_CALL(radio.setStandby()); | ||
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// Initialize the sx128x | ||
PT_CALL(radio.setPacketType(PacketType::LoRa)); | ||
PT_CALL(radio.setRfFrequency(2457_MHz / radio.frequencyLsb)); | ||
PT_CALL(radio.setRegulatorMode(RegulatorMode::Ldo)); | ||
PT_CALL(radio.setBufferBaseAddress(0, 0)); | ||
PT_CALL(radio.setModulationParams(modulationParams)); | ||
PT_CALL(radio.writeRegister(Register::SfAdditionalConfiguration, 0x32)); | ||
PT_CALL(radio.writeRegister(Register::FrequencyErrorCorrection, 0x01)); | ||
PT_CALL(radio.setPacketParams(packetParams)); | ||
PT_CALL(radio.setDioIrqParams(Irq::RxDone | Irq::RxTxTimeout, Irq::RxDone, Irq::RxTxTimeout)); | ||
PT_CALL(radio.setRx(sx128x::PeriodBase::ms1, 1000)); | ||
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MODM_LOG_DEBUG << "Sx128x initialization complete!" << modm::endl; | ||
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while (true) | ||
{ | ||
if (rx::dio1.exchange(false)) | ||
{ | ||
PT_CALL(radio.getIrqStatus(&irqStatus)); | ||
if (irqStatus.any(Irq::RxDone)) | ||
{ | ||
PT_CALL(radio.clearIrqStatus(Irq::RxDone | Irq::RxTxTimeout)); | ||
PT_CALL(radio.setRx(sx128x::PeriodBase::ms1, 1000)); | ||
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PT_CALL(radio.getRxBufferStatus(&rxBufferStatus)); | ||
PT_CALL(radio.getPacketStatus(&packetStatus)); | ||
PT_CALL(radio.readBuffer(rxBufferStatus.rxStartBufferPointer, std::span{buffer, rxBufferStatus.rxPayloadLength})); | ||
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if (rxBufferStatus.rxPayloadLength > 0) | ||
{ | ||
uint32_t counter; | ||
std::memcpy((uint8_t *) &counter, buffer, sizeof(counter)); | ||
MODM_LOG_DEBUG << "Received Message" << modm::endl; | ||
MODM_LOG_DEBUG << "Counter: " << counter << modm::endl; | ||
} | ||
} | ||
} | ||
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if (rx::dio2.exchange(false)) | ||
{ | ||
PT_CALL(radio.getIrqStatus(&irqStatus)); | ||
if (irqStatus.any(Irq::RxTxTimeout)) | ||
{ | ||
// RxTxTimeout Interrupt received! | ||
// Clear irq and set to rx again. | ||
PT_CALL(radio.clearIrqStatus(Irq::RxTxTimeout)); | ||
PT_CALL(radio.setRx(sx128x::PeriodBase::ms1, 1000)); | ||
MODM_LOG_DEBUG << "RxTxTimeout Interrupt!" << modm::endl; | ||
} | ||
} | ||
PT_YIELD(); | ||
} | ||
PT_END(); | ||
} | ||
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private: | ||
Irq_t irqStatus; | ||
PacketStatus packetStatus; | ||
RxBufferStatus rxBufferStatus; | ||
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modm::Sx128x< Transport, Reset, Busy > radio; | ||
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private: | ||
static constexpr size_t bufferSize = 256; | ||
uint8_t buffer[bufferSize]; | ||
} rxThread; | ||
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class TxThread : public modm::sx128x, public modm::pt::Protothread | ||
{ | ||
using Reset = modm::platform::GpioC2; | ||
using Busy = modm::platform::GpioC3; | ||
using Dio1 = modm::platform::GpioA0; | ||
using Dio2 = modm::platform::GpioA1; | ||
using Dio3 = modm::platform::GpioA2; | ||
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using Nss = modm::platform::GpioC1; | ||
using Transport = modm::Sx128xTransportSpi<SpiMaster, Nss>; | ||
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public: | ||
TxThread() : timer(std::chrono::milliseconds(500)) {} | ||
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inline bool | ||
run() | ||
{ | ||
PT_BEGIN(); | ||
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Nss::setOutput(modm::Gpio::High); | ||
Reset::setOutput(modm::Gpio::Low); | ||
Busy::setInput(modm::platform::Gpio::InputType::PullDown); | ||
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Dio1::setInput(modm::platform::Gpio::InputType::PullDown); | ||
Exti::connect<Dio1>(Exti::Trigger::RisingEdge, [](uint8_t) { tx::dio1 = true; }); | ||
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Dio2::setInput(modm::platform::Gpio::InputType::PullDown); | ||
Exti::connect<Dio2>(Exti::Trigger::RisingEdge, [](uint8_t) { tx::dio2 = true; }); | ||
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Dio3::setInput(modm::platform::Gpio::InputType::PullDown); | ||
Exti::connect<Dio3>(Exti::Trigger::RisingEdge, [](uint8_t) { tx::dio3 = true; }); | ||
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PT_CALL(radio.reset()); | ||
PT_CALL(radio.setStandby()); | ||
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// Initialize the sx128x | ||
PT_CALL(radio.setPacketType(PacketType::LoRa)); | ||
PT_CALL(radio.setRfFrequency(2457_MHz / radio.frequencyLsb)); | ||
PT_CALL(radio.setRegulatorMode(RegulatorMode::Ldo)); | ||
PT_CALL(radio.setBufferBaseAddress(0, 0)); | ||
PT_CALL(radio.setModulationParams(modulationParams)); | ||
PT_CALL(radio.writeRegister(Register::SfAdditionalConfiguration, 0x32)); | ||
PT_CALL(radio.writeRegister(Register::FrequencyErrorCorrection, 0x01)); | ||
PT_CALL(radio.setPacketParams(packetParams)); | ||
PT_CALL(radio.setDioIrqParams(Irq::TxDone | Irq::RxTxTimeout, Irq::TxDone, Irq::RxTxTimeout)); | ||
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MODM_LOG_DEBUG << "Sx128x initialization complete!" << modm::endl; | ||
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while (true) | ||
{ | ||
if (tx::dio1.exchange(false)) | ||
{ | ||
PT_CALL(radio.getIrqStatus(&irqStatus)); | ||
if (irqStatus.any(Irq::TxDone)) | ||
{ | ||
PT_CALL(radio.clearIrqStatus(Irq::TxDone)); | ||
irqStatus.reset(Irq::TxDone); | ||
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MODM_LOG_DEBUG << "Message sent" << modm::endl; | ||
MODM_LOG_DEBUG << "Counter: " << counter << modm::endl; | ||
counter++; | ||
} | ||
} | ||
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if (tx::dio2.exchange(false)) | ||
{ | ||
PT_CALL(radio.getIrqStatus(&irqStatus)); | ||
if (irqStatus.any(Irq::RxTxTimeout)) | ||
{ | ||
PT_CALL(radio.clearIrqStatus(Irq::RxTxTimeout)); | ||
irqStatus.reset(Irq::RxTxTimeout); | ||
MODM_LOG_DEBUG << "Received a timeout" << modm::endl; | ||
} | ||
} | ||
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if (timer.execute()) | ||
{ | ||
PT_CALL(radio.writeBuffer(0, std::span<const uint8_t>{(uint8_t *) &counter, sizeof(counter)})); | ||
PT_CALL(radio.setTx(PeriodBase::ms1, 100)); | ||
} | ||
PT_YIELD(); | ||
} | ||
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PT_END(); | ||
} | ||
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private: | ||
Irq_t irqStatus; | ||
modm::Sx128x< Transport, Reset, Busy > radio; | ||
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uint32_t counter = 0; | ||
modm::PeriodicTimer timer; | ||
}; | ||
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int | ||
main() | ||
{ | ||
Board::initialize(); | ||
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SpiMaster::connect<Mosi::Mosi, Mosi::Mosi, Sck::Sck>(); | ||
SpiMaster::initialize<Board::SystemClock, 21.5_MHz>(); | ||
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MODM_LOG_INFO << "==========SX128x Test==========" << modm::endl; | ||
MODM_LOG_DEBUG << "Debug logging here" << modm::endl; | ||
MODM_LOG_INFO << "Info logging here" << modm::endl; | ||
MODM_LOG_WARNING << "Warning logging here" << modm::endl; | ||
MODM_LOG_ERROR << "Error logging here" << modm::endl; | ||
MODM_LOG_INFO << "===============================" << modm::endl; | ||
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while (true) | ||
{ | ||
rxThread.run(); | ||
} | ||
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return 0; | ||
} |
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<library> | ||
<extends>modm:nucleo-g474re</extends> | ||
<options> | ||
<option name="modm:build:build.path">../../../build/nucleo_g474re/sx128x_lora</option> | ||
</options> | ||
<modules> | ||
<module>modm:driver:sx128x</module> | ||
<module>modm:platform:exti</module> | ||
<module>modm:platform:gpio</module> | ||
<module>modm:platform:spi:1</module> | ||
<module>modm:processing:protothread</module> | ||
<module>modm:processing:timer</module> | ||
<module>modm:build:scons</module> | ||
</modules> | ||
</library> |