Mercurial > public > ostc4
annotate Small_CPU/Src/batteryGasGauge.c @ 241:2b9775f71e30 div-fixes-5
cleanup: factor out I2C1_Status() and cleanup type
Having a function that returns global data is rather useless. Further,
use HAL_StatusTypeDef directly, instead of typecasting between a
HAL defined enum and our uint_8t. Cleanup only.
Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
| author | Jan Mulder <jlmulder@xs4all.nl> |
|---|---|
| date | Mon, 08 Apr 2019 11:18:40 +0200 |
| parents | f9ba924d188e |
| children | b23de15e2861 |
| 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 ------------------------------------------------------------------*/ | |
| 25 #include "batteryGasGauge.h" | |
| 26 #include "baseCPU2.h" | |
| 27 #include "stm32f4xx_hal.h" | |
| 28 #include "i2c.h" | |
| 29 | |
|
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f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
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30 static float battery_f_voltage = 0; |
|
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
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31 static float battery_f_charge_percent = 0; |
| 38 | 32 |
| 33 #define BGG_BATTERY_OFFSET (26123) //; 65536-(3,35Ah/0,085mAh) | |
|
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Bugfix: set battery percentage correctly after RTE update
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parents:
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diff
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34 #define BGG_BATTERY_DIVIDER (394) //; 3,35Ah/0,085mAh/100 [%] |
| 38 | 35 |
| 36 float get_voltage(void) | |
| 37 { | |
| 38 #ifdef OSTC_ON_DISCOVERY_HARDWARE | |
| 39 return 3.0f; | |
| 40 #endif | |
| 41 | |
| 42 return battery_f_voltage; | |
| 43 } | |
| 44 | |
| 45 | |
| 46 float get_charge(void) | |
| 47 { | |
| 48 #ifdef OSTC_ON_DISCOVERY_HARDWARE | |
| 49 return 100.0f; | |
| 50 #endif | |
| 51 | |
| 52 return battery_f_charge_percent; | |
| 53 } | |
| 54 | |
| 55 | |
| 56 void init_battery_gas_gauge(void) | |
| 57 { | |
| 58 #ifdef OSTC_ON_DISCOVERY_HARDWARE | |
| 59 return; | |
| 60 #endif | |
| 61 | |
| 62 uint8_t buffer[2]; | |
| 63 buffer[0] = 0x01; | |
|
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Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
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64 |
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f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
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65 // F8 = 11111000: |
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f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
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66 // Vbat 3.0V (11) |
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f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
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67 // Prescale M = 128 (111) |
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f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
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68 // AL/CC pin disable (0) |
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f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
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69 // Shutdown (0) |
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f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
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70 buffer[1] = 0xF8; |
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f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
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71 I2C_Master_Transmit(DEVICE_BATTERYGAUGE, buffer, 2); |
| 38 | 72 } |
| 73 | |
| 74 | |
| 75 void battery_gas_gauge_get_data(void) | |
| 76 { | |
| 77 #ifdef OSTC_ON_DISCOVERY_HARDWARE | |
| 78 return; | |
| 79 #endif | |
| 80 | |
| 81 float battery_f_voltage_local; | |
| 82 float battery_f_charge_percent_local; | |
| 83 | |
| 84 uint8_t bufferReceive[10]; | |
| 85 I2C_Master_Receive( DEVICE_BATTERYGAUGE, bufferReceive, 10); | |
| 86 | |
| 87 battery_f_voltage_local = (float)(bufferReceive[8] * 256); | |
| 88 battery_f_voltage_local += (float)(bufferReceive[9]); | |
| 89 battery_f_voltage_local *= (float)6 / (float)0xFFFF; | |
| 90 | |
| 91 // max/full: 0.085 mAh * 1 * 65535 = 5570 mAh | |
| 92 battery_f_charge_percent_local = (float)(bufferReceive[2] * 256); | |
| 93 battery_f_charge_percent_local += (float)(bufferReceive[3]); | |
| 94 battery_f_charge_percent_local -= BGG_BATTERY_OFFSET; | |
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f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
95 battery_f_charge_percent_local /= BGG_BATTERY_DIVIDER; |
| 38 | 96 |
| 97 if(battery_f_charge_percent_local < 0) | |
| 98 battery_f_charge_percent_local = 0; | |
| 99 | |
| 100 battery_f_voltage = battery_f_voltage_local; | |
| 101 battery_f_charge_percent = battery_f_charge_percent_local; | |
| 102 } | |
| 103 | |
| 104 | |
| 105 void battery_gas_gauge_set_charge_full(void) | |
| 106 { | |
| 107 #ifdef OSTC_ON_DISCOVERY_HARDWARE | |
| 108 return; | |
| 109 #endif | |
| 110 | |
| 111 uint8_t bufferSend[3]; | |
| 112 bufferSend[0] = 0x02; | |
| 113 bufferSend[1] = 0xFF; | |
| 114 bufferSend[2] = 0xFF; | |
| 115 I2C_Master_Transmit( DEVICE_BATTERYGAUGE, bufferSend, 3); | |
| 116 } | |
| 117 | |
| 118 | |
| 119 void battery_gas_gauge_set(float percentage) | |
| 120 { | |
| 121 #ifdef OSTC_ON_DISCOVERY_HARDWARE | |
| 122 return; | |
| 123 #endif | |
| 124 | |
| 125 uint16_t mAhSend; | |
| 126 | |
| 127 if(percentage >= 100) | |
| 128 mAhSend = 0xFFFF; | |
|
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f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
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129 else { |
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f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
130 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
|
131 } |
| 38 | 132 |
| 133 uint8_t bufferSend[3]; | |
| 134 bufferSend[0] = 0x02; | |
| 135 bufferSend[1] = (uint8_t)(mAhSend / 256); | |
| 136 bufferSend[2] = (uint8_t)(mAhSend & 0xFF); | |
| 137 I2C_Master_Transmit( DEVICE_BATTERYGAUGE, bufferSend, 3); | |
| 138 } | |
| 139 | |
| 140 | |
| 141 /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/ |