Mercurial > public > ostc4
annotate Small_CPU/Src/batteryGasGauge.c @ 240:625d20070261 div-fixes-5
Improvement SPI stability/recoverability
The core part of this commit comes from careful code reading. The core is the
swap of Scheduler_Request_sync_with_SPI(SPI_SYNC_METHOD_SOFT) and
SPI_Start_single_TxRx_with_Master(). This code is sitting in an if-clause
that is triggered on SPI comms failure. Instead of blindly trying to
communicate again (which will very likely fail again), first try to reset
the comms link, and then try to communicate again. That simply makes
more sense in this case.
This is heavily tested, on 2 simple dives, and 5 very long deco schedules
from the simulator (10+ hour deco's), and a lot of small simulated dives
(upto 2h runtime). Of all these tests, only one long session failed after
9 out of 11h runtime. Analyzing that one failure, suggests that the
RTE is looping in some error handler, which (obviously) results in
a SPI comms failure as a result. I consider this not part of this change.
Additionally, some more cleanup is done in this code.
Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
author | Jan Mulder <jlmulder@xs4all.nl> |
---|---|
date | Mon, 08 Apr 2019 11:49:13 +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 | |
228
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
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
|
31 static float battery_f_charge_percent = 0; |
38 | 32 |
33 #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
|
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; | |
228
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
64 |
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
65 // F8 = 11111000: |
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
66 // Vbat 3.0V (11) |
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
67 // Prescale M = 128 (111) |
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
68 // AL/CC pin disable (0) |
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
69 // Shutdown (0) |
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
70 buffer[1] = 0xF8; |
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
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; | |
228
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; | |
228
f9ba924d188e
Bugfix: set battery percentage correctly after RTE update
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
129 else { |
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****/ |