SDCard-Interface-STM32

An interface between the STM32 NUCLEO F446RE and a micro-SD card for storing data from sensors of the race car's dashboard. A Data Logger for UTD's Dallas Formula Racing.

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Objective:

• Implement SDIO communications
• Interface the micro-SD card with the MCU for storage capabilities.
• Provide LED light indication for card detection
• Condense the program to a callable function
• Store the output as a CSV file
• Improve modularity for a swappable interface
• Build a report generator with Excel and/or MatLab, or use DFR's DataAnalyzer

Technologies:

• General Purpose I/O (GPIO)
• 4-bit SDIO communication protocol
• File Handling Library by Controllers Tech (Modified)
• HAL drivers & FAT FS

Hardware and Equipment:

1. STM32 Nucleo-FE446RE Micro-Controller Unit (MCU) - Equipped with the ARM Cortex M4 processor
2. Adafruit's Micro-SD Card Breakout for SD SPI or SDIO*

Pinout

• PC8 ---> DAT0
• PC9 ---> DAT1
• PC10 --> DAT2
• PC11 --> DAT3
• PC12 --> CLK
• PD2 ---> CMD
• PB6 ---> CD (Card Detection)

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Expected Input

CAN Bus

- RPM
- TPS (Throttle Position Sensor)
- Fuel Open Time
- Ignition Angle
- Barometer
- Map (Manifold Absolute Pressure)
- Radiator Air Temp
- Radiator Coolant Temp
- AFR (Air Fuel Ratio)
- Oil Pressure
- Mass Air Flow Sensor
- Wheel Speed
- Battery Voltage

GPS

- Second, minute, hour, day, month, year
- Speed
- Latitude
- Longitude
- Ellipsoidal Height
- Sea Level Height

Analog-to-Digital Converter (ADC)

- Damper Sensing
- Steer Sensing
- Brake Sensing

Accelerometer & Gyroscope

- X, Y, & Z
- Roll
- Pitch
- Yaw

Note

In order to enable the GPS-based file naming, set the macro _USE_LFN to 2. This enables the Long File Naming Convention, and must be done everytime you make changes to the .ioc file and allow code generation. _USE_LFN can be found in FATFS > Target > ffconf.h