Replacing sd card pins with Emmc , getting IO errors

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Based on the context provided, here are the details and recommendations for addressing the IO errors you are encountering when interfacing a Toradex board with an eMMC card:

Hardware Connections and Initial Pin States:

1. RSt (Reset) Pin: This pin should typically be low during normal operation. Ensure that it is correctly configured to be low to avoid communication issues.
2. CD (Card Detect) Pin: This pin should be high when the card is present. Verify that this pin is set high to confirm the presence of the eMMC card.
3. DS (Data Strobe) Pin: The state of this pin can vary based on the data transfer process. Ensure that it is configured correctly according to the data transfer requirements.

Operating Conditions:

• Ensure that the eMMC card’s operating conditions, such as voltage levels and timing requirements, are met. Failure to adhere to these conditions can lead to communication failures.

Troubleshooting Steps:

• Verify Hardware Connections: Double-check that all connections between the Toradex board and the eMMC card are secure and correctly configured.
• Check Initial Pin States: Confirm that the RSt, CD, and DS pins are set to their correct initial states (high or low) as mentioned above.
• Review Documentation: Consult the Toradex documentation for specific requirements related to eMMC interfacing, including any necessary commands for partition creation and initialization.
• Investigate Initialization Process: Ensure that the eMMC card is properly initialized and formatted. If the card is detected but user partitions are not found, it may be due to improper initialization or configuration. Consider reformatting the card or checking for compatibility issues with the Toradex board.

By following these recommendations, you may be able to resolve the IO errors and successfully create partitions on the eMMC card.

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