15b4baba28
- minimize RAM usage of all components - use both IRAM and DRAM in player component so we can buffer up to 1s on modules without SPI RAM - support fragemented pcm chunks so we can use all available RAM if there isn't a big enough block available but still enough HEAP - reinclude all components from jorgen's master branch - add custom i2s driver to get a precise timing of initial sync - change wrong usage of esp_timer for latency measurement of snapcast protocol - add player component
63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
// Copyright 2018-2019 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "dsp_platform.h"
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#include "esp_log.h"
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#include "esp_dsp.h"
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static const char *TAG = "main";
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// This example shows how to use Mat class from esp-dsp library.
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//
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// First we create matix A and x, and then calculating matrix b as result
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// A*x = b
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// Then we can find x as roots of matrices X and b
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//
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extern "C" void app_main();
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void app_main()
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{
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ESP_LOGI(TAG, "Start Example.");
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int M = 3;
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int N = 3;
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dspm::Mat A(M, N);
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dspm::Mat x(N, 1);
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for (int m = 0 ; m < M ; m++) {
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for (int n = 0 ; n < N ; n++) {
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A(m, n) = N * m + n;
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}
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x(m, 0) = m;
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}
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A(0, 0) = 10;
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A(0, 1) = 11;
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dspm::Mat b = A * x;
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// Gaussian method
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dspm::Mat x1_ = dspm::Mat::solve(A, b);
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// Non Gaussian method
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dspm::Mat x2_ = dspm::Mat::roots(A, b);
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ESP_LOGI(TAG, "Original vector x:");
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std::cout << x;
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ESP_LOGI(TAG, "Solve result:");
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std::cout << x1_;
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ESP_LOGI(TAG, "Roots result:");
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std::cout << x2_;
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ESP_LOGI(TAG, "End Example.");
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}
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