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[exmaples] Add SPI DMA exmaples for Nucleo-F439ZI and -F767ZI
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rleh committed Oct 28, 2021
1 parent 32f426a commit 5dcdf1d
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83 changes: 83 additions & 0 deletions examples/nucleo_f439zi/spi_dma/main.cpp
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/*
* Copyright (c) 2021, Raphael Lehmann
*
* 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/.
*/
// ----------------------------------------------------------------------------

#include <modm/board.hpp>
#include <modm/processing.hpp>

using Mosi = GpioOutputB5;
using Miso = GpioInputB4;
using Sck = GpioOutputB3;
using DmaRx = Dma2::Channel0;
using DmaTx = Dma2::Channel3;
using Spi = SpiMaster1_Dma<DmaRx, DmaTx>;

class SpiThread : public modm::pt::Protothread
{
public:

bool
update()
{
PT_BEGIN();

// Enable DMA controller
Dma2::enable();

// Enable and initialize SPI
Spi::connect<Mosi::Mosi, Miso::Miso, Sck::Sck>();
Spi::initialize<Board::SystemClock, 328_kHz>();

while (true)
{
MODM_LOG_INFO << "sendBuffer adress: " << modm::hex << sendBuffer << modm::endl;
MODM_LOG_INFO << "receiveBuffer adress: " << modm::hex << receiveBuffer << modm::endl;
MODM_LOG_INFO << "Info: 0x20000000 is start of SRAM1" << modm::endl;

MODM_LOG_INFO << "Before first transfer" << modm::endl;

// send out 12 bytes, don't care about response
PT_CALL(Spi::transfer(sendBuffer, nullptr, 12));

MODM_LOG_INFO << "After first transfer" << modm::endl;

// send out 12 bytes, read in 12 bytes
PT_CALL(Spi::transfer(sendBuffer, receiveBuffer, 12));

MODM_LOG_INFO << "After second transfer" << modm::endl << modm::endl;

timeout.restart(500ms);
PT_WAIT_UNTIL(timeout.isExpired());
}

PT_END();
}

private:
uint8_t sendBuffer[13] { "data to send" };
uint8_t receiveBuffer[13];
modm::ShortTimeout timeout;
};

SpiThread spiThread;

int main()
{
Board::initialize();

MODM_LOG_INFO << "Hello from SPI-DMA example on Nucleo-F439ZI!" << modm::endl;

while (true)
{
spiThread.update();
}

return 0;
}
14 changes: 14 additions & 0 deletions examples/nucleo_f439zi/spi_dma/project.xml
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<library>
<extends>modm:nucleo-f439zi</extends>
<options>
<option name="modm:build:build.path">../../../build/nucleo_f439zi/spi_dma</option>
</options>
<modules>
<module>modm:platform:gpio</module>
<module>modm:platform:dma</module>
<module>modm:platform:spi:1</module>
<module>modm:processing:protothread</module>
<module>modm:processing:timer</module>
<module>modm:build:scons</module>
</modules>
</library>
83 changes: 83 additions & 0 deletions examples/nucleo_f767zi/spi_dma/main.cpp
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/*
* Copyright (c) 2021, Raphael Lehmann
*
* 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/.
*/
// ----------------------------------------------------------------------------

#include <modm/board.hpp>
#include <modm/processing.hpp>

using Mosi = GpioOutputB5;
using Miso = GpioInputB4;
using Sck = GpioOutputB3;
using DmaRx = Dma2::Channel0;
using DmaTx = Dma2::Channel3;
using Spi = SpiMaster1_Dma<DmaRx, DmaTx>;

class SpiThread : public modm::pt::Protothread
{
public:

bool
update()
{
PT_BEGIN();

// Enable DMA controller
Dma2::enable();

// Enable and initialize SPI
Spi::connect<Mosi::Mosi, Miso::Miso, Sck::Sck>();
Spi::initialize<Board::SystemClock, 422_kHz>();

while (true)
{
MODM_LOG_INFO << "sendBuffer adress: " << modm::hex << sendBuffer << modm::endl;
MODM_LOG_INFO << "receiveBuffer adress: " << modm::hex << receiveBuffer << modm::endl;
MODM_LOG_INFO << "Info: 0x20000000 is start of SRAM1" << modm::endl;

MODM_LOG_INFO << "Before first transfer" << modm::endl;

// send out 12 bytes, don't care about response
PT_CALL(Spi::transfer(sendBuffer, nullptr, 12));

MODM_LOG_INFO << "After first transfer" << modm::endl;

// send out 12 bytes, read in 12 bytes
PT_CALL(Spi::transfer(sendBuffer, receiveBuffer, 12));

MODM_LOG_INFO << "After second transfer" << modm::endl << modm::endl;

timeout.restart(500ms);
PT_WAIT_UNTIL(timeout.isExpired());
}

PT_END();
}

private:
uint8_t sendBuffer[13] { "data to send" };
uint8_t receiveBuffer[13];
modm::ShortTimeout timeout;
};

SpiThread spiThread;

int main()
{
Board::initialize();

MODM_LOG_INFO << "Hello from SPI-DMA example on Nucleo-F767ZI!" << modm::endl;

while (true)
{
spiThread.update();
}

return 0;
}
14 changes: 14 additions & 0 deletions examples/nucleo_f767zi/spi_dma/project.xml
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<library>
<extends>modm:nucleo-f767zi</extends>
<options>
<option name="modm:build:build.path">../../../build/nucleo_f767zi/spi_dma</option>
</options>
<modules>
<module>modm:platform:gpio</module>
<module>modm:platform:dma</module>
<module>modm:platform:spi:1</module>
<module>modm:processing:protothread</module>
<module>modm:processing:timer</module>
<module>modm:build:scons</module>
</modules>
</library>

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