kopia lustrzana https://github.com/OpenRTX/OpenRTX
95 wiersze
3.2 KiB
C
95 wiersze
3.2 KiB
C
/***************************************************************************
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* Copyright (C) 2021 by Federico Amedeo Izzo IU2NUO, *
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* Niccolò Izzo IU2KIN *
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* Frederik Saraci IU2NRO *
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* Silvano Seva IU2KWO *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, see <http://www.gnu.org/licenses/> *
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***************************************************************************/
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#include <interfaces/graphics.h>
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#include <interfaces/platform.h>
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#include <interfaces/keyboard.h>
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#include <hwconfig.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <os.h>
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uint64_t benchmark(uint32_t n);
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int main()
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{
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platform_init();
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platform_setBacklightLevel(255);
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gfx_init();
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kbd_init();
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/*
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* Setup timer for time measurement: input clock is twice the APB2 clock, so
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* is 168MHz. Setting the prescaler to 33 we get a tick frequency of
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* 5,09090909091 MHz, that is a resolution of 0.196 us per tick.
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* Considering that the timer has a 16-bit counter, we have rollover in
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* 12.87 ms.
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*/
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static const uint32_t clkDivider = 33;
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RCC->APB2ENR |= RCC_APB2ENR_TIM9EN;
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TIM9->PSC = clkDivider - 1;
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TIM9->ARR = 0xFFFF;
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TIM9->CR1 = TIM_CR1_CEN;
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uint32_t numIterations = 128;
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while(1)
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{
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getchar();
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uint64_t tot_ticks = benchmark(numIterations);
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float totalTime_s = ((float)(tot_ticks * clkDivider))/168000000.0f;
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printf("Average values over %ld iterations:\r\n", numIterations);
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printf("- %lld ticks\r\n- %f ms\r\n", tot_ticks, totalTime_s*1000.0f);
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}
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}
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uint64_t benchmark(uint32_t n)
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{
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uint64_t totalTime = 0;
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uint32_t dummy = 0;
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for(uint32_t i = 0; i < n; i++)
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{
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gfx_clearScreen();
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point_t origin = {0, i % 128};
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color_t color_red = {255, 0, 0, 255};
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color_t color_white = {255, 255, 255, 255};
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gfx_drawRect(origin, 160, 20, color_red, 1);
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gfx_print(origin, buffer, FONT_SIZE_24PT, TEXT_ALIGN_LEFT,
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color_white, "KEK");
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dummy += kbd_getKeys();
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/* Measure the time taken by gfx_render() */
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TIM9->CNT = 0;
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gfx_render();
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totalTime += TIM9->CNT;
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}
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return totalTime/n;
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}
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