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main.cpp

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main.cpp

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/*
* Copyright (c) 2021, Jeff McBride
*
* 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>
using namespace modm::platform;
int main()
{
// Test SPI send and receive in loopback mode. If we receive the expected
// characters back, flash slowly. Otherwise, flash fast.
Board::initialize();
SpiMaster0::connect<GpioB0::Sck, GpioA9::Miso, GpioA10::Mosi>();
SpiMaster0::initialize<Board::SystemClock, 1_MHz>();
SpiMaster0::setLocalLoopback(true);
while (true)
{
uint32_t flash_time_ms;
uint8_t tx[] = {0xa5, 0x21};
uint8_t rx[2];
SpiMaster0::transfer(tx, rx, 2);
if(rx[0] == 0xa5 && rx[1] == 0x21) {
flash_time_ms = 500;
} else {
flash_time_ms = 100;
}
for(uint32_t i=0; i<5; i++)
{
Board::Led::set();
modm::delay_ms(flash_time_ms);
Board::Led::reset();
modm::delay_ms(flash_time_ms);
}
}
}
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