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Option 1 | Option 2 | |||||||||||||
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Description | SD via SPI | SD SDMMC | ||||||||||||
Pros and cons | Protocol that FW is familiar with Fewer physical pins Uses a SPI port that could be used for something else | Built in data validation & redundancy Harder to write FW for ('non-standard') 🔖 SDMMC Packet Overhead: 48 bits from host, 48 bits from SD card, 16 bits | ||||||||||||
Estimated cost |
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✅ Action items
- Determine logging output rate
- Determine loop control rate Aidan Bowers (Deactivated)
- How much data in bytes we expect to log Dhruv Upadhyay
- SD Packet Overhead:
- Timing requirement for how long the transaction can take Dhruv Upadhyay
- Determine what factors impact SD SPI transmission rates Darwin Clark