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Espressif Systems /ESP32 /SDHOST /STATUS

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Interpret as STATUS

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31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (FIFO_RX_WATERMARK)FIFO_RX_WATERMARK 0 (FIFO_TX_WATERMARK)FIFO_TX_WATERMARK 0 (FIFO_EMPTY)FIFO_EMPTY 0 (FIFO_FULL)FIFO_FULL 0COMMAND_FSM_STATES 0 (DATA_3_STATUS)DATA_3_STATUS 0 (DATA_BUSY)DATA_BUSY 0 (DATA_STATE_MC_BUSY)DATA_STATE_MC_BUSY 0RESPONSE_INDEX 0FIFO_COUNT

Description

SD/MMC status register

Fields

FIFO_RX_WATERMARK

FIFO reached Receive watermark level, not qualified with data transfer.
FIFO_TX_WATERMARK

FIFO reached Transmit watermark level, not qualified with data transfer.
FIFO_EMPTY

FIFO is empty status.
FIFO_FULL

FIFO is full status.
COMMAND_FSM_STATES

Command FSM states. 0: Idle; 1: Send init sequence; 2: Send cmd start bit; 3: Send cmd tx bit; 4: Send cmd index + arg; 5: Send cmd crc7; 6: Send cmd end bit; 7: Receive resp start bit; 8: Receive resp IRQ response; 9: Receive resp tx bit; 10: Receive resp cmd idx; 11: Receive resp data; 12: Receive resp crc7; 13: Receive resp end bit; 14: Cmd path wait NCC; 15: Wait, cmd-to-response turnaround.
DATA_3_STATUS

Raw selected sdhost_card_data[3], checks whether card is present. 0: card not present; 1: card present.
DATA_BUSY

Inverted version of raw selected sdhost_card_data[0]. 0: Card data not busy; 1: Card data busy.
DATA_STATE_MC_BUSY

Data transmit or receive state-machine is busy.
RESPONSE_INDEX

Index of previous response, including any auto-stop sent by core.
FIFO_COUNT

FIFO count, number of filled locations in FIFO.

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Register License

Copyright 2024 Espressif Systems (Shanghai) PTE LTD

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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Register Reference

https://github.com/cmsis-svd/cmsis-svd-data