kopia lustrzana https://github.com/espressif/esp-idf
49 wiersze
1.3 KiB
C++
49 wiersze
1.3 KiB
C++
/*
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* SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: CC0
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*
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* MPU9250 SPI Sensor C++ Example
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*
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* This example code is in the Public Domain (or CC0 licensed, at your option.)
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*
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* Unless required by applicable law or agreed to in writing, this
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* software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <iostream>
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#include "spi_host_cxx.hpp"
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using namespace std;
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using namespace idf;
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static const GPIONum NSS(23);
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static const uint8_t READ_FLAG = 0x80;
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static const uint8_t MPU9250_WHO_AM_I_REG_ADDR = 0x75;
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extern "C" void app_main(void)
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{
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try {
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SPIMaster master(SPINum(2),
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MOSI(25),
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MISO(26),
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SCLK(27));
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shared_ptr<SPIDevice> spi_dev = master.create_dev(CS(NSS.get_num()), Frequency::MHz(1));
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vector<uint8_t> write_data = {MPU9250_WHO_AM_I_REG_ADDR | READ_FLAG, 0x00};
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vector<uint8_t> result = spi_dev->transfer(write_data).get();
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cout << "Result of WHO_AM_I register: 0x";
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printf("%02X", result[1]);
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cout << endl;
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this_thread::sleep_for(std::chrono::seconds(2));
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} catch (const SPIException &e) {
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cout << "Couldn't read SPI!" << endl;
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}
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}
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