Open deltabeard opened 5 years ago
CMD and DATA lines D0-D3 of the slave SD Card should be pulled up by 50KOhm resistor even in 1-bit mode or SPI mode. The pullups of the slave cards should be connected even if they’re not connected to the host.
Adapted from: https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/sd_pullup_requirements.html
CMD and DATA lines D0-D3 of the slave SD Card should be pulled up by 50KOhm resistor even in 1-bit mode or SPI mode. The pullups of the slave cards should be connected even if they’re not connected to the host.
Adapted from: https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/sd_pullup_requirements.html