amiro-os / unittests / lld / src / ut_lld_adc.c @ 9487b4cd
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1 | e545e620 | Thomas Schöpping | /*
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2 | AMiRo-OS is an operating system designed for the Autonomous Mini Robot (AMiRo) platform.
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3 | 84f0ce9e | Thomas Schöpping | Copyright (C) 2016..2019 Thomas Schöpping et al.
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4 | e545e620 | Thomas Schöpping | |
5 | This program is free software: you can redistribute it and/or modify
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6 | it under the terms of the GNU General Public License as published by
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7 | the Free Software Foundation, either version 3 of the License, or
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8 | (at your option) any later version.
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9 | |||
10 | This program is distributed in the hope that it will be useful,
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | GNU General Public License for more details.
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14 | |||
15 | You should have received a copy of the GNU General Public License
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16 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 | */
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18 | |||
19 | 3940ba8a | Thomas Schöpping | #include <amiroos.h> |
20 | e545e620 | Thomas Schöpping | |
21 | #if ((AMIROOS_CFG_TESTS_ENABLE == true) && (HAL_USE_ADC == TRUE))|| defined(__DOXYGEN__) |
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22 | |||
23 | ddf34c3d | Thomas Schöpping | #include <ut_lld_adc.h> |
24 | |||
25 | f3ac1c96 | Thomas Schöpping | /******************************************************************************/
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26 | /* LOCAL DEFINITIONS */
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27 | /******************************************************************************/
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28 | e545e620 | Thomas Schöpping | |
29 | /**
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30 | * @brief Event mask of the ADC analog watchdog event.
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31 | */
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32 | #define _adcWdgEventmask EVENT_MASK(31) |
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33 | |||
34 | /**
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35 | * @brief ADC analog watchdog threshold (9.0V).
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36 | */
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37 | #define _adcWdgThreshold (uint16_t)(9.0f / 5.0f / 3.3f * ((1 << 12) - 1) + 0.5f) |
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38 | |||
39 | f3ac1c96 | Thomas Schöpping | /******************************************************************************/
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40 | /* EXPORTED VARIABLES */
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41 | /******************************************************************************/
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42 | |||
43 | /******************************************************************************/
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44 | /* LOCAL TYPES */
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45 | /******************************************************************************/
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46 | |||
47 | /******************************************************************************/
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48 | /* LOCAL VARIABLES */
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49 | /******************************************************************************/
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50 | |||
51 | e545e620 | Thomas Schöpping | /**
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52 | * @brief Pointer to the thread listening for an ADC analog watchdog event.
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53 | */
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54 | static thread_t* _listener;
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55 | |||
56 | f3ac1c96 | Thomas Schöpping | /******************************************************************************/
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57 | /* LOCAL FUNCTIONS */
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58 | /******************************************************************************/
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59 | |||
60 | e545e620 | Thomas Schöpping | /**
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61 | * @brief Helper function to convert ADC sample value to volts.
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62 | *
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63 | * @param[in] adc ADC sample value.
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64 | *
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65 | * @return Converted value in volts.
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66 | */
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67 | static inline float _adc2volt(adcsample_t adc) { |
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68 | return (float)adc / ((1 << 12) - 1) * 3.3f * 5.0f; |
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69 | } |
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70 | |||
71 | /**
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72 | * @brief ADC analog watchdog callback function.
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73 | *
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74 | * @param[in] adcp ADC driver.
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75 | * @param[in] err ADC error value.
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76 | */
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77 | static void _adcAwdCb(ADCDriver* adcp, adcerror_t err) |
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78 | { |
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79 | (void)adcp;
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80 | |||
81 | if (err == ADC_ERR_WATCHDOG) {
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82 | chSysLockFromISR(); |
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83 | if (_listener != NULL) { |
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84 | chEvtSignalI(_listener, _adcWdgEventmask); |
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85 | _listener = NULL;
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86 | } |
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87 | chSysUnlockFromISR(); |
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88 | } |
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89 | |||
90 | return;
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91 | } |
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92 | |||
93 | f3ac1c96 | Thomas Schöpping | /******************************************************************************/
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94 | /* EXPORTED FUNCTIONS */
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95 | /******************************************************************************/
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96 | |||
97 | e545e620 | Thomas Schöpping | /**
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98 | * @brief ADC unit test function.
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99 | *
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100 | * @param[in] stream Stream for input/output.
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101 | * @param[in] ut Unit test object.
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102 | *
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103 | * @return Unit test result value.
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104 | */
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105 | aos_utresult_t utAdcFunc(BaseSequentialStream* stream, aos_unittest_t* ut) |
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106 | { |
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107 | aosDbgCheck(ut->data != NULL && ((ut_adcdata_t*)(ut->data))->driver != NULL && ((ut_adcdata_t*)(ut->data))->convgroup != NULL); |
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108 | |||
109 | // local variables
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110 | aos_utresult_t result = {0, 0}; |
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111 | adcsample_t buffer[1] = {0}; |
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112 | bool wdgpassed = false; |
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113 | eventmask_t eventmask = 0;
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114 | ADCConversionGroup conversionGroup = *(((ut_adcdata_t*)(ut->data))->convgroup); |
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115 | conversionGroup.circular = true;
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116 | conversionGroup.end_cb = NULL;
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117 | conversionGroup.end_cb = NULL;
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118 | conversionGroup.htr = ADC_HTR_HT; |
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119 | conversionGroup.ltr = 0;
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120 | |||
121 | chprintf(stream, "reading voltage for five seconds...\n");
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122 | adcStartConversion(((ut_adcdata_t*)(ut->data))->driver, &conversionGroup, buffer, 1);
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123 | for (uint8_t s = 0; s < 5; ++s) { |
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124 | aosThdSSleep(1);
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125 | chprintf(stream, "\tVSYS = %fV\n", _adc2volt(buffer[0])); |
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126 | } |
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127 | adcStopConversion(((ut_adcdata_t*)(ut->data))->driver); |
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128 | if (buffer[0] != 0) { |
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129 | aosUtPassed(stream, &result); |
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130 | } else {
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131 | aosUtFailed(stream, &result); |
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132 | } |
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133 | |||
134 | chprintf(stream, "detecting external power...\n");
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135 | conversionGroup.error_cb = _adcAwdCb; |
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136 | conversionGroup.htr = _adcWdgThreshold; |
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137 | conversionGroup.ltr = _adcWdgThreshold; |
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138 | _listener = chThdGetSelfX(); |
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139 | adcStartConversion(((ut_adcdata_t*)(ut->data))->driver, &conversionGroup, buffer, 1);
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140 | 1e5f7648 | Thomas Schöpping | eventmask = chEvtWaitOneTimeout(_adcWdgEventmask, chTimeS2I(5));
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141 | e545e620 | Thomas Schöpping | if (eventmask == _adcWdgEventmask) {
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142 | aosUtPassedMsg(stream, &result, "%fV %c 9V\n", _adc2volt(buffer[0]), (buffer[0] > _adcWdgThreshold) ? '>' : '<'); |
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143 | wdgpassed = true;
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144 | } else {
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145 | adcStopConversion(((ut_adcdata_t*)(ut->data))->driver); |
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146 | aosUtFailed(stream, &result); |
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147 | wdgpassed = false;
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148 | } |
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149 | |||
150 | if (wdgpassed) {
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151 | for (uint8_t i = 0; i < 2; ++i) { |
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152 | if (buffer[0] > _adcWdgThreshold) { |
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153 | chprintf(stream, "Remove external power within ten seconds.\n");
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154 | conversionGroup.htr = ADC_HTR_HT; |
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155 | conversionGroup.ltr = _adcWdgThreshold; |
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156 | } else {
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157 | chprintf(stream, "Connect external power within ten seconds.\n");
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158 | conversionGroup.htr = _adcWdgThreshold; |
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159 | conversionGroup.ltr = 0;
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160 | } |
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161 | aosThdMSleep(100); // wait some time so the ADC wil trigger again immediately due to noise |
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162 | _listener = chThdGetSelfX(); |
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163 | adcStartConversion(((ut_adcdata_t*)(ut->data))->driver, &conversionGroup, buffer, 1);
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164 | 1e5f7648 | Thomas Schöpping | eventmask = chEvtWaitOneTimeout(_adcWdgEventmask, chTimeS2I(10));
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165 | e545e620 | Thomas Schöpping | if (eventmask == _adcWdgEventmask) {
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166 | aosUtPassedMsg(stream, &result, "%fV %c 9V\n", _adc2volt(buffer[0]), (buffer[0] > _adcWdgThreshold) ? '>' : '<'); |
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167 | } else {
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168 | adcStopConversion(((ut_adcdata_t*)(ut->data))->driver); |
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169 | aosUtFailed(stream, &result); |
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170 | break;
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171 | } |
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172 | } |
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173 | } |
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174 | |||
175 | return result;
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176 | } |
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177 | |||
178 | #endif /* (AMIROOS_CFG_TESTS_ENABLE == true) && (HAL_USE_ADC == TRUE) */ |