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Espressif Systems /ESP32-P4 /TWAI0 /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 (RECEIVE_BUFFER)RECEIVE_BUFFER 0 (OVERRUN)OVERRUN 0 (TRANSMIT_BUFFER)TRANSMIT_BUFFER 0 (TRANSMISSION_COMPLETE)TRANSMISSION_COMPLETE 0 (RECEIVE)RECEIVE 0 (TRANSMIT)TRANSMIT 0 (ERR)ERR 0 (NODE_BUS_OFF)NODE_BUS_OFF 0 (MISS)MISS

Description

TWAI status register.

Fields

RECEIVE_BUFFER

1: full, one or more complete messages are available in the RXFIFO. 0: empty, no message is available
OVERRUN

1: overrun, a message was lost because there was not enough space for that message in the RXFIFO. 0: absent, no data overrun has occurred since the last clear data overrun command was given
TRANSMIT_BUFFER

1: released, the CPU may write a message into the transmit buffer. 0: locked, the CPU cannot access the transmit buffer, a message is either waiting for transmission or is in the process of being transmitted
TRANSMISSION_COMPLETE

1: complete, last requested transmission has been successfully completed. 0: incomplete, previously requested transmission is not yet completed
RECEIVE

1: receive, the TWAI controller is receiving a message. 0: idle
TRANSMIT

1: transmit, the TWAI controller is transmitting a message. 0: idle
ERR

1: error, at least one of the error counters has reached or exceeded the CPU warning limit defined by the Error Warning Limit Register (EWLR). 0: ok, both error counters are below the warning limit
NODE_BUS_OFF

1: bus-off, the TWAI controller is not involved in bus activities. 0: bus-on, the TWAI controller is involved in bus activities
MISS

1: current message is destroyed because of FIFO overflow.

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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