amiro-os / unittests / lld / src / ut_lld_adc.c @ f3ac1c96
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/*
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AMiRo-OS is an operating system designed for the Autonomous Mini Robot (AMiRo) platform.
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Copyright (C) 2016..2019 Thomas Schöpping et al.
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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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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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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 <ut_lld_adc.h> |
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#if ((AMIROOS_CFG_TESTS_ENABLE == true) && (HAL_USE_ADC == TRUE))|| defined(__DOXYGEN__) |
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/******************************************************************************/
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/* LOCAL DEFINITIONS */
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/******************************************************************************/
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#include <aos_debug.h> |
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#include <aos_thread.h> |
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#include <chprintf.h> |
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/**
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* @brief Event mask of the ADC analog watchdog event.
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*/
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#define _adcWdgEventmask EVENT_MASK(31) |
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/**
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* @brief ADC analog watchdog threshold (9.0V).
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*/
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#define _adcWdgThreshold (uint16_t)(9.0f / 5.0f / 3.3f * ((1 << 12) - 1) + 0.5f) |
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/******************************************************************************/
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/* EXPORTED VARIABLES */
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/******************************************************************************/
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/******************************************************************************/
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/* LOCAL TYPES */
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/******************************************************************************/
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/******************************************************************************/
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/* LOCAL VARIABLES */
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/******************************************************************************/
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/**
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* @brief Pointer to the thread listening for an ADC analog watchdog event.
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*/
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static thread_t* _listener;
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/******************************************************************************/
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/* LOCAL FUNCTIONS */
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/******************************************************************************/
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/**
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* @brief Helper function to convert ADC sample value to volts.
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*
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* @param[in] adc ADC sample value.
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*
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* @return Converted value in volts.
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*/
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static inline float _adc2volt(adcsample_t adc) { |
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return (float)adc / ((1 << 12) - 1) * 3.3f * 5.0f; |
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} |
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/**
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* @brief ADC analog watchdog callback function.
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*
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* @param[in] adcp ADC driver.
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* @param[in] err ADC error value.
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*/
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static void _adcAwdCb(ADCDriver* adcp, adcerror_t err) |
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{ |
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(void)adcp;
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if (err == ADC_ERR_WATCHDOG) {
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chSysLockFromISR(); |
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if (_listener != NULL) { |
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chEvtSignalI(_listener, _adcWdgEventmask); |
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_listener = NULL;
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} |
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chSysUnlockFromISR(); |
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} |
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return;
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} |
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/******************************************************************************/
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/* EXPORTED FUNCTIONS */
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/******************************************************************************/
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/**
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* @brief ADC unit test function.
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*
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* @param[in] stream Stream for input/output.
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* @param[in] ut Unit test object.
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*
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* @return Unit test result value.
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*/
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aos_utresult_t utAdcFunc(BaseSequentialStream* stream, aos_unittest_t* ut) |
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{ |
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aosDbgCheck(ut->data != NULL && ((ut_adcdata_t*)(ut->data))->driver != NULL && ((ut_adcdata_t*)(ut->data))->convgroup != NULL); |
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// local variables
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aos_utresult_t result = {0, 0}; |
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adcsample_t buffer[1] = {0}; |
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bool wdgpassed = false; |
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eventmask_t eventmask = 0;
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ADCConversionGroup conversionGroup = *(((ut_adcdata_t*)(ut->data))->convgroup); |
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conversionGroup.circular = true;
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conversionGroup.end_cb = NULL;
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conversionGroup.end_cb = NULL;
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conversionGroup.htr = ADC_HTR_HT; |
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conversionGroup.ltr = 0;
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chprintf(stream, "reading voltage for five seconds...\n");
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adcStartConversion(((ut_adcdata_t*)(ut->data))->driver, &conversionGroup, buffer, 1);
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for (uint8_t s = 0; s < 5; ++s) { |
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aosThdSSleep(1);
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chprintf(stream, "\tVSYS = %fV\n", _adc2volt(buffer[0])); |
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} |
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adcStopConversion(((ut_adcdata_t*)(ut->data))->driver); |
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if (buffer[0] != 0) { |
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aosUtPassed(stream, &result); |
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} else {
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aosUtFailed(stream, &result); |
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} |
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chprintf(stream, "detecting external power...\n");
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conversionGroup.error_cb = _adcAwdCb; |
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conversionGroup.htr = _adcWdgThreshold; |
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conversionGroup.ltr = _adcWdgThreshold; |
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_listener = chThdGetSelfX(); |
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adcStartConversion(((ut_adcdata_t*)(ut->data))->driver, &conversionGroup, buffer, 1);
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eventmask = chEvtWaitOneTimeout(_adcWdgEventmask, chTimeS2I(5));
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if (eventmask == _adcWdgEventmask) {
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aosUtPassedMsg(stream, &result, "%fV %c 9V\n", _adc2volt(buffer[0]), (buffer[0] > _adcWdgThreshold) ? '>' : '<'); |
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wdgpassed = true;
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} else {
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adcStopConversion(((ut_adcdata_t*)(ut->data))->driver); |
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aosUtFailed(stream, &result); |
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wdgpassed = false;
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} |
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if (wdgpassed) {
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for (uint8_t i = 0; i < 2; ++i) { |
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if (buffer[0] > _adcWdgThreshold) { |
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chprintf(stream, "Remove external power within ten seconds.\n");
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conversionGroup.htr = ADC_HTR_HT; |
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conversionGroup.ltr = _adcWdgThreshold; |
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} else {
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chprintf(stream, "Connect external power within ten seconds.\n");
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conversionGroup.htr = _adcWdgThreshold; |
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conversionGroup.ltr = 0;
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} |
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aosThdMSleep(100); // wait some time so the ADC wil trigger again immediately due to noise |
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_listener = chThdGetSelfX(); |
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adcStartConversion(((ut_adcdata_t*)(ut->data))->driver, &conversionGroup, buffer, 1);
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eventmask = chEvtWaitOneTimeout(_adcWdgEventmask, chTimeS2I(10));
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if (eventmask == _adcWdgEventmask) {
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aosUtPassedMsg(stream, &result, "%fV %c 9V\n", _adc2volt(buffer[0]), (buffer[0] > _adcWdgThreshold) ? '>' : '<'); |
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} else {
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adcStopConversion(((ut_adcdata_t*)(ut->data))->driver); |
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aosUtFailed(stream, &result); |
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break;
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} |
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} |
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} |
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return result;
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} |
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#endif /* (AMIROOS_CFG_TESTS_ENABLE == true) && (HAL_USE_ADC == TRUE) */ |