https://github.com/coderbyheart/bmv712reader

Publish BMV-712 readings using nRF9160 DK
https://github.com/coderbyheart/bmv712reader

smartvan

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Publish BMV-712 readings using nRF9160 DK

• Host: GitHub
• URL: https://github.com/coderbyheart/bmv712reader
• Owner: coderbyheart
• Created: 2020-09-12T15:13:15.000Z (over 5 years ago)
• Default Branch: saga
• Last Pushed: 2020-12-27T14:40:30.000Z (almost 5 years ago)
• Last Synced: 2025-03-27T05:43:59.347Z (9 months ago)
• Topics: smartvan
• Language: C
• Homepage:
• Size: 132 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Publish BMV-712 readings using nRF9160 DK

## Connect BMV-712

![ve.direct](./vedirect.png)

- Pin 2 to Pin 14 on DK

- Pin 3 to Pin 15 on DK

Do not connect GND and VDD.

## Readings

The BMV-712 returns these values:

| Property | Value Example | Units    | Description                              |

| -------- | ------------: | -------- | ---------------------------------------- |

| PID      |        0xA381 |          | Product ID                               |

| V        |         12991 | mV       | Main or channel 1 (battery) voltage      |

| T        |            22 | °C       | Battery temperature                      |

| I        |         -4696 | mA       | Main or channel 1 battery current        |

| P        |           -61 | W        | Instantaneous power                      |

| CE       |         -2160 | mAH      | Consumed Amp Hours                       |

| SOC      |           993 | ‰        | State-of-charge                          |

| TTG      |          1750 | Minutes  | Time-to-go                               |

| Alarm    |           OFF |          | Alarm condition active                   |

| Relay    |           OFF |          | Relay state                              |

| AR       |             0 |          | Alarm reason                             |

| BMV      |     712 Smart |          | Model description (deprecated)           |

| FW       |          0403 |          | Firmware version                         |

| H1       |        -28064 | mAh      | Depth of the deepest discharge           |

| H2       |         -2160 | mAh      | Depth of the last discharge              |

| H3       |             0 | mAh      | Depth of the average discharge           |

| H4       |             0 |          | Number of charge cycles                  |

| H5       |             0 |          | Number of full discharges                |

| H6       |        -49512 | mAh      | Cumulative Amp Hours drawn               |

| H7       |          -314 | mV       | Minimum main (battery) voltage           |

| H8       |         14686 | mV       | Maximum main (battery) voltage           |

| H9       |          4747 | Seconds  | Number of seconds since last full charge |

| H10      |             0 |          | Number of automatic synchronizations     |

| H11      |             0 |          | Number of low main voltage alarms        |

| H12      |             0 |          | Number of high main voltage alarms       |

| H15      |             0 | mV       | Minimum auxiliary (battery) voltage      |

| H16      |             0 | mV       | Maximum auxiliary (battery) voltage      |

| H17      |            63 | 0.01 kWh | Amount of discharged energy              |

| H18      |            96 | 0.01 kWh | Amount of charged energy                 |

## Building

### Prepare the Docker image with all build dependencies

    docker build -t zephyr-bmv712reader .

### Build the firmware

    docker run --rm -v ${PWD}:/workdir/ncs/zephyr-bmv712reader zephyr-bmv712reader \

        /bin/bash -c 'cd /workdir/ncs/zephyr-bmv712reader && west build -p always -b nrf9160dk_nrf9160ns'

### Flash the firmware

    nrfjprog -f nrf91 --program build/zephyr/merged.hex --sectoranduicrerase -r --log