Mercurial > public > ostc4
annotate Small_CPU/Src/batteryGasGauge.c @ 909:6902bb4b6b2e Evo_2_23
Define state of new GPIO out pins:
Some new GPIO pins were initialized but not used. This may cause some random activations e.g. of the red debug LED. To avoid this the output levels are set to inactive levels (e.g. to LED_OFF)
| author | Ideenmodellierer |
|---|---|
| date | Tue, 15 Oct 2024 19:07:19 +0200 |
| parents | 079bb5b22c06 |
| children |
| rev | line source |
|---|---|
| 38 | 1 /** |
| 2 ****************************************************************************** | |
| 3 * @file batteryGasGauge.c | |
| 4 * @author heinrichs weikamp gmbh | |
| 5 * @version V0.0.1 | |
| 6 * @date 09-Dec-2014 | |
| 7 * @brief LTC2942 Battery Gas Gauge | |
| 8 * | |
| 9 @verbatim | |
| 10 ============================================================================== | |
| 11 ##### stm32f4xx_hal_i2c.c modification ##### | |
| 12 ============================================================================== | |
| 13 The LTC2942 requires an repeated start condition without stop condition | |
| 14 for data reception. | |
| 15 | |
| 16 @endverbatim | |
| 17 ****************************************************************************** | |
| 18 * @attention | |
| 19 * | |
| 20 * <h2><center>© COPYRIGHT(c) 2014 heinrichs weikamp</center></h2> | |
| 21 * | |
| 22 ****************************************************************************** | |
| 23 */ | |
| 24 /* Includes ------------------------------------------------------------------*/ | |
| 330 | 25 #include <string.h> /* memset */ |
| 38 | 26 #include "batteryGasGauge.h" |
| 27 #include "baseCPU2.h" | |
| 28 #include "stm32f4xx_hal.h" | |
| 29 #include "i2c.h" | |
| 30 | |
| 662 | 31 static float battery_f_voltage = BATTERY_DEFAULT_VOLTAGE; /* max assumed voltage */ |
|
228
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
32 static float battery_f_charge_percent = 0; |
| 668 | 33 static uint8_t chargeValueKnown = 0; /* indicator if the charge of the battery is known (for example after a full charge cycle) */ |
| 34 | |
| 38 | 35 |
| 36 #define BGG_BATTERY_OFFSET (26123) //; 65536-(3,35Ah/0,085mAh) | |
|
228
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
37 #define BGG_BATTERY_DIVIDER (394) //; 3,35Ah/0,085mAh/100 [%] |
| 38 | 38 |
| 39 float get_voltage(void) | |
| 40 { | |
| 41 #ifdef OSTC_ON_DISCOVERY_HARDWARE | |
| 42 return 3.0f; | |
| 43 #endif | |
| 44 | |
| 45 return battery_f_voltage; | |
| 46 } | |
| 47 | |
| 48 | |
| 49 float get_charge(void) | |
| 50 { | |
| 51 #ifdef OSTC_ON_DISCOVERY_HARDWARE | |
| 52 return 100.0f; | |
| 53 #endif | |
| 54 | |
| 55 return battery_f_charge_percent; | |
| 56 } | |
| 57 | |
| 58 | |
| 59 void init_battery_gas_gauge(void) | |
| 60 { | |
| 61 #ifdef OSTC_ON_DISCOVERY_HARDWARE | |
| 62 return; | |
| 63 #endif | |
| 64 | |
| 65 uint8_t buffer[2]; | |
| 66 buffer[0] = 0x01; | |
|
228
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
67 |
|
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
68 // F8 = 11111000: |
| 433 | 69 // ADC auto mode (11) |
|
228
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
70 // Prescale M = 128 (111) |
| 668 | 71 // AL/CC pin disable (00) |
|
228
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
72 // Shutdown (0) |
|
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
73 buffer[1] = 0xF8; |
|
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
74 I2C_Master_Transmit(DEVICE_BATTERYGAUGE, buffer, 2); |
| 38 | 75 } |
| 76 | |
| 330 | 77 uint8_t battery_gas_gauge_CheckConfigOK(void) |
| 78 { | |
| 79 #ifdef OSTC_ON_DISCOVERY_HARDWARE | |
| 80 return; | |
| 81 #endif | |
| 82 | |
| 83 uint8_t retval = 0; | |
| 84 uint8_t bufferReceive[10]; | |
| 85 | |
| 86 memset(bufferReceive,0,sizeof(bufferReceive)); | |
| 87 | |
| 88 I2C_Master_Receive(DEVICE_BATTERYGAUGE, bufferReceive, 10); | |
| 89 if(bufferReceive[1] == 0xf8) | |
| 90 { | |
| 91 retval = 1; | |
| 92 } | |
| 93 return retval; | |
| 94 } | |
| 95 | |
|
242
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
96 static void disable_adc(void) |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
97 { |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
98 uint8_t buffer[2]; |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
99 buffer[0] = 0x01; |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
100 |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
101 // according to the datasheet of the LTC2942, the adc shall |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
102 // be disabled when writing to the gauge registers |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
103 |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
104 // 0xF9 = 11111001: |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
105 // see init_battery_gas_gauge() |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
106 // Shutdown (1) |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
107 buffer[1] = 0xF9; |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
108 I2C_Master_Transmit(DEVICE_BATTERYGAUGE, buffer, 2); |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
109 } |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
110 |
| 38 | 111 |
| 112 void battery_gas_gauge_get_data(void) | |
| 113 { | |
| 114 #ifdef OSTC_ON_DISCOVERY_HARDWARE | |
| 115 return; | |
| 116 #endif | |
| 117 | |
| 118 float battery_f_voltage_local; | |
| 119 float battery_f_charge_percent_local; | |
| 120 | |
| 121 uint8_t bufferReceive[10]; | |
|
408
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
122 |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
123 if(I2C_Master_Receive(DEVICE_BATTERYGAUGE, bufferReceive, 10) == HAL_OK) |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
124 { |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
125 battery_f_voltage_local = (float)(bufferReceive[8] * 256); |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
126 battery_f_voltage_local += (float)(bufferReceive[9]); |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
127 battery_f_voltage_local *= (float)6 / (float)0xFFFF; |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
128 |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
129 // max/full: 0.085 mAh * 1 * 65535 = 5570 mAh |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
130 battery_f_charge_percent_local = (float)(bufferReceive[2] * 256); |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
131 battery_f_charge_percent_local += (float)(bufferReceive[3]); |
| 433 | 132 battery_f_charge_percent_local -= BGG_BATTERY_OFFSET; /* Because of the prescalar 128 the counter assumes a max value of 5570mAh => normalize to 3350mAh*/ |
| 133 battery_f_charge_percent_local /= BGG_BATTERY_DIVIDER; /* transform to percentage */ | |
| 38 | 134 |
|
408
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
135 if(battery_f_charge_percent_local < 0) |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
136 battery_f_charge_percent_local = 0; |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
137 |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
138 battery_f_voltage = battery_f_voltage_local; |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
139 battery_f_charge_percent = battery_f_charge_percent_local; |
|
2fc08a0d1ec3
Bugfix invalid voltage / temperatur after coldstart:
ideenmodellierer
parents:
330
diff
changeset
|
140 } |
| 38 | 141 } |
| 142 | |
| 143 | |
| 144 void battery_gas_gauge_set_charge_full(void) | |
| 145 { | |
|
242
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
146 disable_adc(); |
| 38 | 147 #ifdef OSTC_ON_DISCOVERY_HARDWARE |
| 148 return; | |
| 149 #endif | |
| 150 | |
| 151 uint8_t bufferSend[3]; | |
| 152 bufferSend[0] = 0x02; | |
| 153 bufferSend[1] = 0xFF; | |
| 154 bufferSend[2] = 0xFF; | |
| 155 I2C_Master_Transmit( DEVICE_BATTERYGAUGE, bufferSend, 3); | |
|
242
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
156 init_battery_gas_gauge(); |
| 668 | 157 chargeValueKnown = 1; |
| 38 | 158 } |
| 159 | |
| 160 | |
| 161 void battery_gas_gauge_set(float percentage) | |
| 162 { | |
|
242
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
163 |
|
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
164 disable_adc(); |
| 38 | 165 #ifdef OSTC_ON_DISCOVERY_HARDWARE |
| 166 return; | |
| 167 #endif | |
| 168 | |
| 169 uint16_t mAhSend; | |
| 170 | |
| 171 if(percentage >= 100) | |
| 172 mAhSend = 0xFFFF; | |
|
228
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
173 else { |
|
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
174 mAhSend = (percentage * BGG_BATTERY_DIVIDER) + BGG_BATTERY_OFFSET; |
|
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
175 } |
| 38 | 176 |
| 177 uint8_t bufferSend[3]; | |
| 178 bufferSend[0] = 0x02; | |
| 179 bufferSend[1] = (uint8_t)(mAhSend / 256); | |
| 180 bufferSend[2] = (uint8_t)(mAhSend & 0xFF); | |
| 181 I2C_Master_Transmit( DEVICE_BATTERYGAUGE, bufferSend, 3); | |
|
242
b23de15e2861
Comply to datasheet when resetting battery gauge registers
Jan Mulder <jlmulder@xs4all.nl>
parents:
228
diff
changeset
|
182 init_battery_gas_gauge(); |
| 668 | 183 chargeValueKnown = 1; |
| 38 | 184 } |
| 185 | |
| 668 | 186 uint8_t battery_gas_gauge_isChargeValueValid(void) |
| 187 { | |
| 188 return chargeValueKnown; | |
| 189 } | |
| 190 | |
| 191 void battery_gas_gauge_setChargeValueValid(void) | |
| 192 { | |
| 193 chargeValueKnown = 1; | |
| 194 } | |
| 38 | 195 |
| 196 /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/ |