amiro-os / os / unittests / lld / src / ut_lld_adc.c @ 1fa17188
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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 | Copyright (C) 2016..2018 Thomas Schöpping et al.
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4 | |||
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 | #include <ut_lld_adc.h> |
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20 | |||
21 | #if ((AMIROOS_CFG_TESTS_ENABLE == true) && (HAL_USE_ADC == TRUE))|| defined(__DOXYGEN__) |
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22 | |||
23 | #include <aos_debug.h> |
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24 | #include <aos_thread.h> |
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25 | #include <chprintf.h> |
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26 | |||
27 | /**
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28 | * @brief Event mask of the ADC analog watchdog event.
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29 | */
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30 | #define _adcWdgEventmask EVENT_MASK(31) |
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31 | |||
32 | /**
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33 | * @brief ADC analog watchdog threshold (9.0V).
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34 | */
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35 | #define _adcWdgThreshold (uint16_t)(9.0f / 5.0f / 3.3f * ((1 << 12) - 1) + 0.5f) |
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36 | |||
37 | /**
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38 | * @brief Pointer to the thread listening for an ADC analog watchdog event.
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39 | */
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40 | static thread_t* _listener;
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41 | |||
42 | /**
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43 | * @brief Helper function to convert ADC sample value to volts.
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44 | *
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45 | * @param[in] adc ADC sample value.
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46 | *
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47 | * @return Converted value in volts.
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48 | */
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49 | static inline float _adc2volt(adcsample_t adc) { |
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50 | return (float)adc / ((1 << 12) - 1) * 3.3f * 5.0f; |
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51 | } |
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52 | |||
53 | /**
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54 | * @brief ADC analog watchdog callback function.
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55 | *
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56 | * @param[in] adcp ADC driver.
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57 | * @param[in] err ADC error value.
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58 | */
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59 | static void _adcAwdCb(ADCDriver* adcp, adcerror_t err) |
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60 | { |
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61 | (void)adcp;
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62 | |||
63 | if (err == ADC_ERR_WATCHDOG) {
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64 | chSysLockFromISR(); |
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65 | if (_listener != NULL) { |
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66 | chEvtSignalI(_listener, _adcWdgEventmask); |
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67 | _listener = NULL;
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68 | } |
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69 | chSysUnlockFromISR(); |
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70 | } |
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71 | |||
72 | return;
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73 | } |
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74 | |||
75 | /**
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76 | * @brief ADC unit test function.
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77 | *
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78 | * @param[in] stream Stream for input/output.
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79 | * @param[in] ut Unit test object.
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80 | *
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81 | * @return Unit test result value.
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82 | */
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83 | aos_utresult_t utAdcFunc(BaseSequentialStream* stream, aos_unittest_t* ut) |
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84 | { |
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85 | aosDbgCheck(ut->data != NULL && ((ut_adcdata_t*)(ut->data))->driver != NULL && ((ut_adcdata_t*)(ut->data))->convgroup != NULL); |
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86 | |||
87 | // local variables
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88 | aos_utresult_t result = {0, 0}; |
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89 | adcsample_t buffer[1] = {0}; |
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90 | bool wdgpassed = false; |
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91 | eventmask_t eventmask = 0;
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92 | ADCConversionGroup conversionGroup = *(((ut_adcdata_t*)(ut->data))->convgroup); |
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93 | conversionGroup.circular = true;
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94 | conversionGroup.end_cb = NULL;
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95 | conversionGroup.end_cb = NULL;
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96 | conversionGroup.htr = ADC_HTR_HT; |
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97 | conversionGroup.ltr = 0;
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98 | |||
99 | chprintf(stream, "reading voltage for five seconds...\n");
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100 | adcStartConversion(((ut_adcdata_t*)(ut->data))->driver, &conversionGroup, buffer, 1);
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101 | for (uint8_t s = 0; s < 5; ++s) { |
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102 | aosThdSSleep(1);
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103 | chprintf(stream, "\tVSYS = %fV\n", _adc2volt(buffer[0])); |
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104 | } |
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105 | adcStopConversion(((ut_adcdata_t*)(ut->data))->driver); |
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106 | if (buffer[0] != 0) { |
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107 | aosUtPassed(stream, &result); |
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108 | } else {
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109 | aosUtFailed(stream, &result); |
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110 | } |
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111 | |||
112 | chprintf(stream, "detecting external power...\n");
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113 | conversionGroup.error_cb = _adcAwdCb; |
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114 | conversionGroup.htr = _adcWdgThreshold; |
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115 | conversionGroup.ltr = _adcWdgThreshold; |
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116 | _listener = chThdGetSelfX(); |
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117 | adcStartConversion(((ut_adcdata_t*)(ut->data))->driver, &conversionGroup, buffer, 1);
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118 | 1e5f7648 | Thomas Schöpping | eventmask = chEvtWaitOneTimeout(_adcWdgEventmask, chTimeS2I(5));
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119 | e545e620 | Thomas Schöpping | if (eventmask == _adcWdgEventmask) {
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120 | aosUtPassedMsg(stream, &result, "%fV %c 9V\n", _adc2volt(buffer[0]), (buffer[0] > _adcWdgThreshold) ? '>' : '<'); |
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121 | wdgpassed = true;
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122 | } else {
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123 | adcStopConversion(((ut_adcdata_t*)(ut->data))->driver); |
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124 | aosUtFailed(stream, &result); |
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125 | wdgpassed = false;
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126 | } |
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127 | |||
128 | if (wdgpassed) {
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129 | for (uint8_t i = 0; i < 2; ++i) { |
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130 | if (buffer[0] > _adcWdgThreshold) { |
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131 | chprintf(stream, "Remove external power within ten seconds.\n");
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132 | conversionGroup.htr = ADC_HTR_HT; |
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133 | conversionGroup.ltr = _adcWdgThreshold; |
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134 | } else {
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135 | chprintf(stream, "Connect external power within ten seconds.\n");
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136 | conversionGroup.htr = _adcWdgThreshold; |
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137 | conversionGroup.ltr = 0;
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138 | } |
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139 | aosThdMSleep(100); // wait some time so the ADC wil trigger again immediately due to noise |
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140 | _listener = chThdGetSelfX(); |
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141 | adcStartConversion(((ut_adcdata_t*)(ut->data))->driver, &conversionGroup, buffer, 1);
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142 | 1e5f7648 | Thomas Schöpping | eventmask = chEvtWaitOneTimeout(_adcWdgEventmask, chTimeS2I(10));
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143 | e545e620 | Thomas Schöpping | if (eventmask == _adcWdgEventmask) {
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144 | aosUtPassedMsg(stream, &result, "%fV %c 9V\n", _adc2volt(buffer[0]), (buffer[0] > _adcWdgThreshold) ? '>' : '<'); |
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145 | } else {
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146 | adcStopConversion(((ut_adcdata_t*)(ut->data))->driver); |
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147 | aosUtFailed(stream, &result); |
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148 | break;
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149 | } |
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150 | } |
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151 | } |
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152 | |||
153 | return result;
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154 | } |
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155 | |||
156 | #endif /* (AMIROOS_CFG_TESTS_ENABLE == true) && (HAL_USE_ADC == TRUE) */ |