Commit Graph

4 Commits

Author SHA1 Message Date
Song Ruo Jing
202b18b5fa esp_clk_tree: Rename clk_tree_xxx to esp_clk_tree_xxx, add compilation warning to clk_tree.h 2023-04-27 11:11:18 +00:00
Darian Leung
72becf31e4 twai: Add errata workaround for listen only mode
This commit adds a workaround for the TWAI listen only mode errata which is
present on the ESP32, ESP32-S2, ESP32-S3, and ESP32-C3. twai_get_status_info()
has also been updated to account for the fact that TEC/REC are frozen in
listen only mode.

Errata Description:

When the TWAI controller is put into listen only mode, it should not influence
the TWAI bus in any way (i.e., should never send a dominant bit). However,
on the targets listed above, the TWAI controller will send dominant bits in an
error frame (i.e., active error frame), even if the controller is set to listen
only mode.

Workaround:

We can force the TWAI controller into the error passive state on startup (by
setting the REC to >= 128). Since the TEC/REC are frozen in listen only mode,
the TWAI controller will remain error passive and only send recessive bits
(i.e., passive error frames), thus will not influence the TWAI bus.

Closes https://github.com/espressif/esp-idf/issues/9157
2023-02-23 12:50:06 +08:00
wanlei
fdeeced62c twai: h2 support twai driver 2023-02-16 16:34:23 +08:00
laokaiyao
f27cd67c00 driver: pack peripherals 2023-02-02 18:19:58 +08:00