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38
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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>© 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 #define CHARGE_IN_PIN GPIO_PIN_2
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38 #define CHARGE_IN_GPIO_PORT GPIOC
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39 #define CHARGE_IN_GPIO_ENABLE() __GPIOC_CLK_ENABLE()
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40
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41 #define CHARGE_OUT_PIN GPIO_PIN_1
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42 #define CHARGE_OUT_GPIO_PORT GPIOC
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43 #define CHARGE_OUT_GPIO_ENABLE() __GPIOC_CLK_ENABLE()
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44
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45
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46 uint8_t battery_i_charge_status = 0;
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47 uint8_t battery_charger_counter = 0;
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48
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49 /* can be 0, 1 or 255
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50 * 0 is disconnected
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51 * 1 is charging
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52 * 255 is full
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53 */
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54 uint8_t get_charge_status(void)
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55 {
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56 return battery_i_charge_status;
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57 }
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58
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59 void init_battery_charger_status(void)
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60 {
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61 #ifdef OSTC_ON_DISCOVERY_HARDWARE
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62 return;
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63 #endif
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64
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65 CHARGE_IN_GPIO_ENABLE();
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66 CHARGE_OUT_GPIO_ENABLE();
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67
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68 ReInit_battery_charger_status_pins();
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69 }
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70
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71 void ReInit_battery_charger_status_pins(void)
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72 {
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73 #ifdef OSTC_ON_DISCOVERY_HARDWARE
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74 return;
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75 #endif
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76
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77 GPIO_InitTypeDef GPIO_InitStructure;
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78
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79 GPIO_InitStructure.Pin = CHARGE_IN_PIN;
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80 GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
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81 GPIO_InitStructure.Pull = GPIO_NOPULL;
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82 GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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83 HAL_GPIO_Init(CHARGE_IN_GPIO_PORT, &GPIO_InitStructure);
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84
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85 GPIO_InitStructure.Pin = CHARGE_OUT_PIN;
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86 GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
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87 GPIO_InitStructure.Pull = GPIO_NOPULL;
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88 GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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89 HAL_GPIO_Init(CHARGE_OUT_GPIO_PORT, &GPIO_InitStructure);
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90 }
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91
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92
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93 void DeInit_battery_charger_status_pins(void)
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94 {
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95 #ifdef OSTC_ON_DISCOVERY_HARDWARE
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96 return;
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97 #endif
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98 GPIO_InitTypeDef GPIO_InitStructure;
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99
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100
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101 GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
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102 GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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103 GPIO_InitStructure.Pull = GPIO_NOPULL;
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104
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105 GPIO_InitStructure.Pin = CHARGE_IN_PIN;
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106 HAL_GPIO_Init(CHARGE_IN_GPIO_PORT, &GPIO_InitStructure);
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107
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108 GPIO_InitStructure.Pin = CHARGE_OUT_PIN;
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109 HAL_GPIO_Init(CHARGE_OUT_GPIO_PORT, &GPIO_InitStructure);
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110 }
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111
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112 /* static counter is used to avoid multiple counts of charge startings
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113 and after that it is used, starting at 127 to count for the charge full signal
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114
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115 there a short disconnections with the QI charger
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116 therefore the battery_charger_counter has a countdown instead of = 0.
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117
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118 battery_gas_gauge_set_charge_full and scheduleUpdateDeviceDataChargerFull are
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119 set after disconnection as the charging process continues as long as not disconnected
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120 to prevent the short disconnections the battery_charger_counter is used too including
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121 upcounting again while battery_i_charge_status == 255 and the connection is established
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122
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123 */
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124
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125 void battery_charger_get_status_and_contral_battery_gas_gauge(uint8_t inSleepModeLessCounts)
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126 {
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127 #ifdef OSTC_ON_DISCOVERY_HARDWARE
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128 return;
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129 #endif
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130
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131 /* on disconnection or while disconnected */
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132 if(HAL_GPIO_ReadPin(CHARGE_IN_GPIO_PORT,CHARGE_IN_PIN))
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133 {
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134 if(battery_charger_counter)
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135 {
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136 battery_charger_counter--;
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137 global.dataSendToMaster.chargeStatus = CHARGER_lostConnection;
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138 global.deviceDataSendToMaster.chargeStatus = CHARGER_lostConnection;
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139 }
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140 /* max count down to 127+5 or 127+20 */
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141 if((battery_i_charge_status == 255) && battery_charger_counter < 127)
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142 {
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143 // battery_gas_gauge_set_charge_full();
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144 // scheduleUpdateDeviceDataChargerFull();
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145 battery_charger_counter = 0;
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146 }
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147
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148 if(battery_charger_counter == 0)
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149 {
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150 battery_i_charge_status = 0;
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151 global.dataSendToMaster.chargeStatus = CHARGER_off;
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152 global.deviceDataSendToMaster.chargeStatus = CHARGER_off;
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153
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154 }
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155 return;
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156 }
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157
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158 /* connected */
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159
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160 /* wait for disconnection to write and reset */
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161 if(battery_i_charge_status == 255)
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162 {
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163 global.dataSendToMaster.chargeStatus = CHARGER_complete;
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164 global.deviceDataSendToMaster.chargeStatus = CHARGER_complete;
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165
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166 if((inSleepModeLessCounts && (battery_charger_counter < 127+5)) || (battery_charger_counter < 127+20))
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167 battery_charger_counter++;
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168 return;
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169 }
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170
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171 if(battery_charger_counter == 0)
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172 battery_i_charge_status = 1;
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173
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174 /* charger is connected and didn't signal full yet */
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175 global.dataSendToMaster.chargeStatus = CHARGER_running;
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176 global.deviceDataSendToMaster.chargeStatus = CHARGER_running;
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177
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178 GPIO_InitTypeDef GPIO_InitStructure;
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179 GPIO_InitStructure.Pin = CHARGE_OUT_PIN;
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180 GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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181 GPIO_InitStructure.Pull = GPIO_NOPULL;
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182 GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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183 HAL_GPIO_Init(CHARGE_OUT_GPIO_PORT, &GPIO_InitStructure);
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184 HAL_GPIO_WritePin(CHARGE_OUT_GPIO_PORT, CHARGE_OUT_PIN,GPIO_PIN_SET);
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185 HAL_Delay(1);
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186
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187
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188 if(battery_charger_counter < 120)
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189 {
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190 if(!inSleepModeLessCounts)
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191 battery_charger_counter++;
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192 else
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193 {
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194 battery_charger_counter += 30;
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195 if(battery_charger_counter >= 127)
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196 battery_charger_counter = 126;
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197 }
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198 }
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199 else
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200 if(battery_charger_counter < 127)
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201 {
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202 battery_charger_counter = 127;
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203 if(battery_i_charge_status < 2)
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204 {
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205 battery_i_charge_status = 2;
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206 scheduleUpdateDeviceDataChargerCharging();
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207 }
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208 }
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209
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210 if(battery_charger_counter >= 127)
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211 {
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212 if(HAL_GPIO_ReadPin(CHARGE_IN_GPIO_PORT,CHARGE_IN_PIN) || (get_voltage() >= 4.1f))
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213 {
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214 battery_charger_counter++;
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215 if((inSleepModeLessCounts && (battery_charger_counter > 127+5)) || (battery_charger_counter > 127+20))
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216 {
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217 battery_charger_counter = 127;
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218 if(get_voltage() >= 4.1f)
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219 {
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220 battery_i_charge_status = 255;
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221 battery_gas_gauge_set_charge_full();
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222 scheduleUpdateDeviceDataChargerFull();
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223 }
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224 }
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225 }
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226 else
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227 battery_charger_counter = 127;
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228 }
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229
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230 GPIO_InitStructure.Pin = CHARGE_OUT_PIN;
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231 GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
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232 GPIO_InitStructure.Pull = GPIO_NOPULL;
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233 GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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234 HAL_GPIO_Init(CHARGE_OUT_GPIO_PORT, &GPIO_InitStructure);
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235 }
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236
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237 /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/
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