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annotate Small_CPU/Src/batteryCharger.c @ 643:5149cd644fbc

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Reimplemented charger status generation (deactivated): Sometimes the original implementation never reached the state fully charged for unknown reason. The code already contained a function which set the status to fully charger even it was not signaled by the charger (in case voltage is > 4.1V). The new implementation changed the handling of the detection and the OSTC showing the problem now reaches the fully charger status. As the new implementation is still under test it is deactivated => original implementation is active per default
author Ideenmodellierer
date Wed, 24 Mar 2021 22:06:00 +0100
parents 5f11787b4f42
children ebe3fc302ab8
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1 /**
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2 ******************************************************************************
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3 * @file batteryCharger.c
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4 * @author heinrichs weikamp gmbh
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5 * @date 09-Dec-2014
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6 * @version V0.0.1
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7 * @since 09-Dec-2014
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8 * @brief LTC4054 Battery Charger
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9 *
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10 @verbatim
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11 ==============================================================================
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12 ##### How to use #####
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13 ==============================================================================
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14
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15 The bq5105x provides one status output, CHG. This output is an open-drain NMOS device that is rated to 20 V.
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16 The open-drain FET connected to the CHG pin will be turned on whenever the output (BAT) of the charger is
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17 enabled. As a note, the output of the charger supply will not be enabled if the VRECT-REG does not converge to the
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18 no-load target voltage.
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19
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20 CHG F4 7 O Open-drain output – active when BAT is enabled. Float if not used.
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21
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22 @endverbatim
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23 ******************************************************************************
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24 * @attention
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25 *
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26 * <h2><center>&copy; COPYRIGHT(c) 2015 heinrichs weikamp</center></h2>
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27 *
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28 ******************************************************************************
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29 */
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30 /* Includes ------------------------------------------------------------------*/
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31 #include "batteryCharger.h"
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32 #include "batteryGasGauge.h"
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33 #include "stm32f4xx_hal.h"
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34 #include "scheduler.h"
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35
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36
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37 /* Use This compile switch to select the new charger status control implementation */
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38 /* #define ENABLE_CHARGER_STATUS_V2 */
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39
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40 #define CHARGE_IN_PIN GPIO_PIN_2
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41 #define CHARGE_IN_GPIO_PORT GPIOC
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42 #define CHARGE_IN_GPIO_ENABLE() __GPIOC_CLK_ENABLE()
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43
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44 #define CHARGE_OUT_PIN GPIO_PIN_1
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45 #define CHARGE_OUT_GPIO_PORT GPIOC
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46 #define CHARGE_OUT_GPIO_ENABLE() __GPIOC_CLK_ENABLE()
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47
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48 #define CHARGER_DEBOUNCE_SECONDS (120u) /* 120 seconds used to avoid problems with charger interrupts / disconnections */
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49
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50 uint8_t battery_i_charge_status = 0;
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51 uint16_t battery_charger_counter = 0;
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52
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53 #ifdef ENABLE_CHARGER_STATUS_V2
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54 typedef enum
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55 {
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56 Charger_NotConnected = 0, /* This is identified reading CHARGE_IN_PIN == HIGH */
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57 Charger_WarmUp, /* Charging started but counter did not yet reach a certain limit (used to debounce connect / disconnect events to avoid multiple increases of statistic charging cycle counter) */
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58 Charger_Active, /* Charging identified by CHARGE_IN_PIN == LOW for a certain time */
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59 Charger_Finished,
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60 Charger_LostConnection /* Intermediate state to debounce disconnecting events (including charging error state like over temperature) */
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61 } chargerState_t;
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62
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63 static chargerState_t batteryChargerState = Charger_NotConnected;
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64 #endif
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65
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66 /* can be 0, 1 or 255
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67 * 0 is disconnected
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68 * 1 is charging
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69 * 255 is full
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70 */
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71 uint8_t get_charge_status(void)
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72 {
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73 return battery_i_charge_status;
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74 }
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75
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76 void init_battery_charger_status(void)
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77 {
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78 #ifdef OSTC_ON_DISCOVERY_HARDWARE
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79 return;
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80 #endif
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81
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82 CHARGE_IN_GPIO_ENABLE();
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83 CHARGE_OUT_GPIO_ENABLE();
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84
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85 ReInit_battery_charger_status_pins();
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86 }
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87
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88 void ReInit_battery_charger_status_pins(void)
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89 {
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90 #ifdef OSTC_ON_DISCOVERY_HARDWARE
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91 return;
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92 #endif
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93
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94 GPIO_InitTypeDef GPIO_InitStructure;
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95
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96 GPIO_InitStructure.Pin = CHARGE_IN_PIN;
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97 GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
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98 GPIO_InitStructure.Pull = GPIO_NOPULL;
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99 GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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100 HAL_GPIO_Init(CHARGE_IN_GPIO_PORT, &GPIO_InitStructure);
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101
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102 GPIO_InitStructure.Pin = CHARGE_OUT_PIN;
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103 GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
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104 GPIO_InitStructure.Pull = GPIO_NOPULL;
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105 GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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106 HAL_GPIO_Init(CHARGE_OUT_GPIO_PORT, &GPIO_InitStructure);
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107 }
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108
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109
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110 void DeInit_battery_charger_status_pins(void)
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111 {
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112 #ifdef OSTC_ON_DISCOVERY_HARDWARE
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113 return;
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114 #endif
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115 GPIO_InitTypeDef GPIO_InitStructure;
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116
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117
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118 GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
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119 GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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120 GPIO_InitStructure.Pull = GPIO_NOPULL;
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121
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122 GPIO_InitStructure.Pin = CHARGE_IN_PIN;
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123 HAL_GPIO_Init(CHARGE_IN_GPIO_PORT, &GPIO_InitStructure);
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124
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125 GPIO_InitStructure.Pin = CHARGE_OUT_PIN;
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126 HAL_GPIO_Init(CHARGE_OUT_GPIO_PORT, &GPIO_InitStructure);
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127 }
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128
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129 /* static counter is used to avoid multiple counts of charge startings
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130 and after that it is used, starting at 127 to count for the charge full signal
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131
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132 there a short disconnections with the QI charger
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133 therefore the battery_charger_counter has a countdown instead of = 0.
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134
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135 battery_gas_gauge_set_charge_full and scheduleUpdateDeviceDataChargerFull are
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136 set after disconnection as the charging process continues as long as not disconnected
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137 to prevent the short disconnections the battery_charger_counter is used too including
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138 upcounting again while battery_i_charge_status == 255 and the connection is established
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139
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140 */
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141
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142 void battery_charger_get_status_and_contral_battery_gas_gauge(uint8_t cycleTimeBase)
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143 {
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144 #ifdef ENABLE_CHARGER_STATUS_V2
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145 static uint8_t notifyChargeComplete = 0;
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146 #endif
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147
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148 #ifdef OSTC_ON_DISCOVERY_HARDWARE
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149 return;
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150 #endif
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151
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152 #ifdef ENABLE_CHARGER_STATUS_V2
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153 /* on disconnection or while disconnected */
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154 if(HAL_GPIO_ReadPin(CHARGE_IN_GPIO_PORT,CHARGE_IN_PIN))
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155 {
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156 switch(batteryChargerState)
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157 {
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158 case Charger_Active: global.dataSendToMaster.chargeStatus = CHARGER_lostConnection;
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159 global.deviceDataSendToMaster.chargeStatus = CHARGER_lostConnection;
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160 batteryChargerState = Charger_LostConnection;
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161 battery_charger_counter = CHARGER_DEBOUNCE_SECONDS;
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162
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163 if(get_voltage() >= 4.1f) /* the charger stops charging when charge current is 1/10. */
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164 { /* Basically it is OK to rate a charging as complete if a defined voltage is reached */
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165 batteryChargerState = Charger_Finished;
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166 global.dataSendToMaster.chargeStatus = CHARGER_complete;
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167 global.deviceDataSendToMaster.chargeStatus = CHARGER_complete;
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168 battery_charger_counter = 30;
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169 notifyChargeComplete = 1;
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170 }
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171 break;
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172 case Charger_WarmUp:
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diff changeset
173 case Charger_Finished:
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174 case Charger_LostConnection: if(battery_charger_counter >= cycleTimeBase)
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175 {
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176 battery_charger_counter -= cycleTimeBase;
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177 global.dataSendToMaster.chargeStatus = CHARGER_lostConnection;
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178 global.deviceDataSendToMaster.chargeStatus = CHARGER_lostConnection;
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179 batteryChargerState = Charger_LostConnection;
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180 }
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181 else
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182 {
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183 battery_charger_counter = 0;
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184 global.dataSendToMaster.chargeStatus = CHARGER_off;
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185 global.deviceDataSendToMaster.chargeStatus = CHARGER_off;
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186
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187 if(notifyChargeComplete)
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188 {
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189 battery_gas_gauge_set_charge_full();
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190 scheduleUpdateDeviceDataChargerFull();
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191 notifyChargeComplete = 0;
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192 }
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193 batteryChargerState = Charger_NotConnected;
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194 }
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195 break;
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196 default: break;
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197 }
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198 }
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199 else
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200 {
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201 /* connected */
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202 /* wait for disconnection to write and reset */
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203 switch(batteryChargerState)
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204 {
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205 case Charger_NotConnected: battery_i_charge_status = 1;
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206 battery_charger_counter = 0;
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207 batteryChargerState = Charger_WarmUp;
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208 break;
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diff changeset
209 case Charger_LostConnection: batteryChargerState = Charger_Active;
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210 break;
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211 case Charger_WarmUp: battery_charger_counter += cycleTimeBase;
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212 if(battery_charger_counter >= CHARGER_DEBOUNCE_SECONDS )
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213 {
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214 battery_i_charge_status = 2;
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215 scheduleUpdateDeviceDataChargerCharging();
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216 batteryChargerState = Charger_Active;
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217 }
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218 /* no break */
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219 case Charger_Finished:
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220 case Charger_Active: global.dataSendToMaster.chargeStatus = CHARGER_running;
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221 global.deviceDataSendToMaster.chargeStatus = CHARGER_running;
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222
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223 /* drive the output pin high to determine the state of the charger */
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224 GPIO_InitTypeDef GPIO_InitStructure;
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225 GPIO_InitStructure.Pin = CHARGE_OUT_PIN;
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226 GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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227 GPIO_InitStructure.Pull = GPIO_NOPULL;
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228 GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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229 HAL_GPIO_Init(CHARGE_OUT_GPIO_PORT, &GPIO_InitStructure);
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230 HAL_GPIO_WritePin(CHARGE_OUT_GPIO_PORT, CHARGE_OUT_PIN,GPIO_PIN_SET);
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diff changeset
231 HAL_Delay(1);
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232
5149cd644fbc Reimplemented charger status generation (deactivated):
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233 if(HAL_GPIO_ReadPin(CHARGE_IN_GPIO_PORT,CHARGE_IN_PIN)) /* high => charger stopped charging */
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234 {
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235 batteryChargerState = Charger_Finished;
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236 global.dataSendToMaster.chargeStatus = CHARGER_complete;
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237 global.deviceDataSendToMaster.chargeStatus = CHARGER_complete;
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238 battery_charger_counter = 30;
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239 notifyChargeComplete = 1;
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240 }
5149cd644fbc Reimplemented charger status generation (deactivated):
Ideenmodellierer
parents: 38
diff changeset
241 else
5149cd644fbc Reimplemented charger status generation (deactivated):
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parents: 38
diff changeset
242 {
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diff changeset
243 if(batteryChargerState == Charger_Finished) /* voltage dropped below the hysteresis again => charging restarted */
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244 {
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245 batteryChargerState = Charger_Active;
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246 notifyChargeComplete = 0;
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diff changeset
247 }
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diff changeset
248 }
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diff changeset
249
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250 /* restore high impedance to be able to detect disconnection */
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251 GPIO_InitStructure.Pin = CHARGE_OUT_PIN;
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diff changeset
252 GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
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253 GPIO_InitStructure.Pull = GPIO_NOPULL;
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254 GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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diff changeset
255 HAL_GPIO_Init(CHARGE_OUT_GPIO_PORT, &GPIO_InitStructure);
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256 break;
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257
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diff changeset
258 default: /* wait for disconnection */
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259 break;
5149cd644fbc Reimplemented charger status generation (deactivated):
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parents: 38
diff changeset
260 }
5149cd644fbc Reimplemented charger status generation (deactivated):
Ideenmodellierer
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diff changeset
261 }
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diff changeset
262 #else
38
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263 /* on disconnection or while disconnected */
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264 if(HAL_GPIO_ReadPin(CHARGE_IN_GPIO_PORT,CHARGE_IN_PIN))
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265 {
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266 if(battery_charger_counter)
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267 {
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268 battery_charger_counter--;
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269 global.dataSendToMaster.chargeStatus = CHARGER_lostConnection;
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270 global.deviceDataSendToMaster.chargeStatus = CHARGER_lostConnection;
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271 }
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272 /* max count down to 127+5 or 127+20 */
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273 if((battery_i_charge_status == 255) && battery_charger_counter < 127)
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274 {
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275 // battery_gas_gauge_set_charge_full();
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276 // scheduleUpdateDeviceDataChargerFull();
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277 battery_charger_counter = 0;
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278 }
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heinrichsweikamp
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279
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280 if(battery_charger_counter == 0)
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281 {
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282 battery_i_charge_status = 0;
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283 global.dataSendToMaster.chargeStatus = CHARGER_off;
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284 global.deviceDataSendToMaster.chargeStatus = CHARGER_off;
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285
5f11787b4f42 include in ostc4 repository
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286 }
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heinrichsweikamp
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287 return;
5f11787b4f42 include in ostc4 repository
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288 }
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289
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290 /* connected */
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291
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diff changeset
292 /* wait for disconnection to write and reset */
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293 if(battery_i_charge_status == 255)
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heinrichsweikamp
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294 {
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295 global.dataSendToMaster.chargeStatus = CHARGER_complete;
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296 global.deviceDataSendToMaster.chargeStatus = CHARGER_complete;
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297
643
5149cd644fbc Reimplemented charger status generation (deactivated):
Ideenmodellierer
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298 if(((cycleTimeBase > 1) && (battery_charger_counter < 127+5)) || (battery_charger_counter < 127+20))
38
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299 battery_charger_counter++;
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300 return;
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heinrichsweikamp
parents:
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301 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
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302
5f11787b4f42 include in ostc4 repository
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303 if(battery_charger_counter == 0)
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304 battery_i_charge_status = 1;
5f11787b4f42 include in ostc4 repository
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305
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306 /* charger is connected and didn't signal full yet */
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307 global.dataSendToMaster.chargeStatus = CHARGER_running;
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308 global.deviceDataSendToMaster.chargeStatus = CHARGER_running;
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309
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310 GPIO_InitTypeDef GPIO_InitStructure;
643
5149cd644fbc Reimplemented charger status generation (deactivated):
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diff changeset
311 GPIO_InitStructure.Pin = CHARGE_OUT_PIN;
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diff changeset
312 GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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diff changeset
313 GPIO_InitStructure.Pull = GPIO_NOPULL;
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314 GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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diff changeset
315 HAL_GPIO_Init(CHARGE_OUT_GPIO_PORT, &GPIO_InitStructure);
38
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316 HAL_GPIO_WritePin(CHARGE_OUT_GPIO_PORT, CHARGE_OUT_PIN,GPIO_PIN_SET);
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317 HAL_Delay(1);
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318
5f11787b4f42 include in ostc4 repository
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319
5f11787b4f42 include in ostc4 repository
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320 if(battery_charger_counter < 120)
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321 {
643
5149cd644fbc Reimplemented charger status generation (deactivated):
Ideenmodellierer
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diff changeset
322 if(cycleTimeBase == 1)
38
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323 battery_charger_counter++;
5f11787b4f42 include in ostc4 repository
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324 else
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325 {
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326 battery_charger_counter += 30;
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327 if(battery_charger_counter >= 127)
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328 battery_charger_counter = 126;
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329 }
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330 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
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331 else
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332 if(battery_charger_counter < 127)
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333 {
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334 battery_charger_counter = 127;
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335 if(battery_i_charge_status < 2)
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336 {
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337 battery_i_charge_status = 2;
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338 scheduleUpdateDeviceDataChargerCharging();
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339 }
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340 }
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341
5f11787b4f42 include in ostc4 repository
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342 if(battery_charger_counter >= 127)
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343 {
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344 if(HAL_GPIO_ReadPin(CHARGE_IN_GPIO_PORT,CHARGE_IN_PIN) || (get_voltage() >= 4.1f))
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345 {
5f11787b4f42 include in ostc4 repository
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346 battery_charger_counter++;
643
5149cd644fbc Reimplemented charger status generation (deactivated):
Ideenmodellierer
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347 if(((cycleTimeBase > 1) && (battery_charger_counter > 127+5)) || (battery_charger_counter > 127+20))
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348 {
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349 battery_charger_counter = 127;
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350 if(get_voltage() >= 4.1f)
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351 {
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352 battery_i_charge_status = 255;
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353 battery_gas_gauge_set_charge_full();
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354 scheduleUpdateDeviceDataChargerFull();
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355 }
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356 }
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357 }
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358 else
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359 battery_charger_counter = 127;
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360 }
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361
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362 GPIO_InitStructure.Pin = CHARGE_OUT_PIN;
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363 GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
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364 GPIO_InitStructure.Pull = GPIO_NOPULL;
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365 GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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366 HAL_GPIO_Init(CHARGE_OUT_GPIO_PORT, &GPIO_InitStructure);
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367 #endif
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368 }
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369
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370 /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/