foxBMS  1.2.0
The foxBMS Battery Management System API Documentation
can_cbs_tx_limits.c
Go to the documentation of this file.
1 /**
2  *
3  * @copyright © 2010 - 2021, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
4  * All rights reserved.
5  *
6  * SPDX-License-Identifier: BSD-3-Clause
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions are met:
10  *
11  * 1. Redistributions of source code must retain the above copyright notice, this
12  * list of conditions and the following disclaimer.
13  *
14  * 2. Redistributions in binary form must reproduce the above copyright notice,
15  * this list of conditions and the following disclaimer in the documentation
16  * and/or other materials provided with the distribution.
17  *
18  * 3. Neither the name of the copyright holder nor the names of its
19  * contributors may be used to endorse or promote products derived from
20  * this software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  *
33  * We kindly request you to use one or more of the following phrases to refer to
34  * foxBMS in your hardware, software, documentation or advertising materials:
35  *
36  * - ″This product uses parts of foxBMS®″
37  * - ″This product includes parts of foxBMS®″
38  * - ″This product is derived from foxBMS®″
39  *
40  */
41 
42 /**
43  * @file can_cbs_tx_limits.c
44  * @author foxBMS Team
45  * @date 2021-07-21 (date of creation)
46  * @updated 2021-07-21 (date of last update)
47  * @ingroup DRIVER
48  * @prefix CAN
49  *
50  * @brief CAN driver Tx callback implementation
51  * @details CAN Tx callback for state messages
52  */
53 
54 /*========== Includes =======================================================*/
55 #include "battery_cell_cfg.h"
56 
57 #include "can_cbs.h"
58 #include "can_helper.h"
59 
60 /*========== Macros and Definitions =========================================*/
61 
62 /*========== Static Constant and Variable Definitions =======================*/
63 
64 /*========== Extern Constant and Variable Definitions =======================*/
65 
66 /*========== Static Function Prototypes =====================================*/
67 
68 /*========== Static Function Implementations ================================*/
69 
70 /*========== Extern Function Implementations ================================*/
71 extern uint32_t CAN_TxLimitValues(
72  uint32_t id,
73  uint8_t dlc,
74  CAN_ENDIANNESS_e endianness,
75  uint8_t *pCanData,
76  uint8_t *pMuxId,
77  const CAN_SHIM_s *const kpkCanShim) {
78  /* pMuxId is not used here, therefore has to be NULL_PTR */
79  FAS_ASSERT(pMuxId == NULL_PTR);
80 
81  FAS_ASSERT(id < CAN_MAX_11BIT_ID); /* Currently standard ID, 11 bit */
82  FAS_ASSERT(dlc <= CAN_MAX_DLC); /* Currently max 8 bytes in a CAN frame */
83  FAS_ASSERT(pCanData != NULL_PTR);
84  FAS_ASSERT(kpkCanShim != NULL_PTR);
85  uint64_t message = 0;
86 
87  DATA_READ_DATA(kpkCanShim->pTableSof);
88 
89  /* AXIVION Disable Style Generic-NoMagicNumbers: Signal data defined in .dbc file. */
90  /* maximum charge current */
91  float signalData = (float)kpkCanShim->pTableSof->recommendedContinuousPackChargeCurrent_mA;
92  float offset = 0.0f;
93  float factor = 0.004f; /* convert mA to 250mA */
94  signalData = (signalData + offset) * factor;
95  uint64_t data = (int64_t)signalData;
96  /* set data in CAN frame */
97  CAN_TxSetMessageDataWithSignalData(&message, 11u, 12u, data, endianness);
98 
99  /* maximum discharge current */
100  signalData = (float)kpkCanShim->pTableSof->recommendedContinuousPackDischargeCurrent_mA;
101  offset = 0.0f;
102  factor = 0.004f; /* convert mA to 250mA */
103  signalData = (signalData + offset) * factor;
104  data = (int64_t)signalData;
105  /* set data in CAN frame */
106  CAN_TxSetMessageDataWithSignalData(&message, 7u, 12u, data, endianness);
107 
108  /* TODO: maximum charge power */
109  /* TODO: maximum discharge power */
110 
111  /* minimum pack voltage */
112  signalData = (float)(BS_NR_OF_BAT_CELLS * BC_VOLTAGE_MIN_MSL_mV);
113  offset = 0.0f;
114  factor = 0.00025f; /* convert mV to 4V */
115  signalData = (signalData + offset) * factor;
116  data = (int64_t)signalData;
117  /* set data in CAN frame */
118  CAN_TxSetMessageDataWithSignalData(&message, 63u, 8u, data, endianness);
119 
120  /* maximum pack voltage */
121  signalData = (float)(BS_NR_OF_BAT_CELLS * BC_VOLTAGE_MAX_MSL_mV);
122  offset = 0.0f;
123  factor = 0.00025f; /* convert mV to 4V */
124  signalData = (signalData + offset) * factor;
125  data = (int64_t)signalData;
126  /* set data in CAN frame */
127  CAN_TxSetMessageDataWithSignalData(&message, 55u, 8u, data, endianness);
128  /* AXIVION Enable Style Generic-NoMagicNumbers: */
129 
130  /* now copy data in the buffer that will be used to send data */
131  CAN_TxSetCanDataWithMessageData(message, pCanData, endianness);
132 
133  return 0;
134 }
135 
136 /*========== Externalized Static Function Implementations (Unit Test) =======*/
137 #ifdef UNITY_UNIT_TEST
138 
139 #endif
Configuration of the battery cell (e.g., minimum and maximum cell voltage)
#define BC_VOLTAGE_MIN_MSL_mV
Minimum cell voltage limit.
#define BC_VOLTAGE_MAX_MSL_mV
Maximum cell voltage limit.
#define BS_NR_OF_BAT_CELLS
CAN callbacks header.
uint32_t CAN_TxLimitValues(uint32_t id, uint8_t dlc, CAN_ENDIANNESS_e endianness, uint8_t *pCanData, uint8_t *pMuxId, const CAN_SHIM_s *const kpkCanShim)
can tx callback function for limit values
#define CAN_MAX_11BIT_ID
Definition: can_cfg.h:85
enum CAN_ENDIANNESS CAN_ENDIANNESS_e
#define CAN_MAX_DLC
Definition: can_cfg.h:87
void CAN_TxSetMessageDataWithSignalData(uint64_t *pMessage, uint64_t bitStart, uint8_t bitLength, uint64_t canSignal, CAN_ENDIANNESS_e endianness)
Puts CAN signal data in a 64-bit variable. This function is used to compose a 64-bit CAN message....
Definition: can_helper.c:166
void CAN_TxSetCanDataWithMessageData(uint64_t message, uint8_t *pCanData, CAN_ENDIANNESS_e endianness)
Copy CAN data from a 64-bit variable to 8 bytes. This function is used to copy a 64-bit CAN message t...
Definition: can_helper.c:205
Headers for the helper functions for the CAN module.
#define DATA_READ_DATA(...)
Definition: database.h:76
#define FAS_ASSERT(x)
Assertion macro that asserts that x is true.
Definition: fassert.h:237
#define NULL_PTR
Null pointer.
Definition: fstd_types.h:66
DATA_BLOCK_SOF_s * pTableSof
Definition: can_cfg.h:312
float recommendedContinuousPackDischargeCurrent_mA
Definition: database_cfg.h:386
float recommendedContinuousPackChargeCurrent_mA
Definition: database_cfg.h:385