148 lines
4.7 KiB
C
148 lines
4.7 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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#include "ch.h"
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#include "hal.h"
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#include "chprintf.h"
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#include "portab.h"
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#define TEST_CYCLES 1000U
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static time_measurement_t tm1, tm2;
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static thread_reference_t tr;
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/*
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* Flyback thread.
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*/
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static THD_WORKING_AREA(waThread1, 128);
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static THD_FUNCTION(Thread1, arg) {
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(void)arg;
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chRegSetThreadName("flyback");
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while (true) {
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/* Waiting for wakeup from PENDSV then stopping measurement.*/
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chSysLock();
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(void) chThdSuspendS(&tr);
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chTMStopMeasurementX(&tm2);
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chSysUnlock();
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}
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}
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/*
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* IRQ 0 handler.
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*/
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CH_IRQ_HANDLER(Vector40) {
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CH_IRQ_PROLOGUE();
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chTMChainMeasurementToX(&tm1, &tm2);
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chSysLockFromISR();
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chThdResumeI(&tr, MSG_OK);
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chSysUnlockFromISR();
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CH_IRQ_EPILOGUE();
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}
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/*
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* Application entry point.
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*/
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int main(void) {
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/*
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* System initializations.
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* - HAL initialization, this also initializes the configured device drivers
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* and performs the board-specific initializations.
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* - Kernel initialization, the main() function becomes a thread and the
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* RTOS is active.
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*/
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halInit();
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chSysInit();
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/* Starting a serial port for test report output.*/
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sdStart(&PORTAB_SD1, NULL);
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/* Starting the flyback thread.*/
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tr = NULL;
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chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO + 1U, Thread1, NULL);
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/* Initializing a TM objects for measurement of latency.*/
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chTMObjectInit(&tm1);
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chTMObjectInit(&tm2);
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/* Setting up an IRQ for the latency test. Highest available priority
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is used.*/
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nvicEnableVector(0, CORTEX_MAX_KERNEL_PRIORITY);
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/* Printing banner.*/
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "*** Compiled: %s\r\n", __DATE__ " - " __TIME__);
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#if defined(PLATFORM_NAME)
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "*** Platform: %s\r\n", PLATFORM_NAME);
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#endif
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#if defined(BOARD_NAME)
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "*** Test Board: %s\r\n", BOARD_NAME);
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#endif
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#if defined(PORT_ARCHITECTURE_NAME)
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "*** Architecture: %s\r\n", PORT_ARCHITECTURE_NAME);
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#endif
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#if defined(PORT_CORE_VARIANT_NAME)
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "*** Core Variant: %s @ %uMHz\r\n", PORT_CORE_VARIANT_NAME, SystemCoreClock / 1000000U);
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#endif
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#if defined(PORT_COMPILER_NAME)
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "*** Compiler: %s\r\n\r\n", PORT_COMPILER_NAME);
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#endif
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chThdSleepMilliseconds(500U);
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/* Test loop.*/
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for (unsigned i = 0U; i < TEST_CYCLES; i++) {
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/* Triggering PENDSV, it will happen on the unlock.*/
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chSysLock();
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// SCB->ICSR =SCB_ICSR_PENDSVSET_Msk;
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nvicSetPending(0);
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chTMStartMeasurementX(&tm1);
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chSysUnlock();
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chThdSleepMilliseconds(1);
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}
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/* Printing results.*/
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "ISR activation time latency\r\n\r\n");
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "Iterations: %u\r\n", tm1.n);
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "Last measurement: %u\r\n", tm1.last);
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "Best measurement: %u\r\n", tm1.best);
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "Worst measurement: %u\r\n", tm1.worst);
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "Cumulative time: %u\r\n\r\n", (uint32_t)tm1.cumulative);
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "Thread fly-back latency\r\n\r\n");
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "Iterations: %u\r\n", tm2.n);
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "Last measurement: %u\r\n", tm2.last);
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "Best measurement: %u\r\n", tm2.best);
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "Worst measurement: %u\r\n", tm2.worst);
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chprintf((BaseSequentialStream *)&PORTAB_SD1, "Cumulative time: %u\r\n\r\n", (uint32_t)tm2.cumulative);
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/*
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* Normal main() thread activity, if the button is pressed then the DAC
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* transfer is stopped.
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*/
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while (true) {
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if (palReadLine(PORTAB_LINE_BUTTON) == PORTAB_BUTTON_PRESSED) {
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}
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chThdSleepMilliseconds(500);
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}
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return 0;
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}
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