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CAN: Add pm_lock, fix gpio bug, update docs

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This commit does the following

- Add power management lock to CAN driver so that APB frequency does not change
whilst CAN driver is in use
- Fix incorrect flag in can_transmit()
- Refactor can_driver_install() and can_driver_uninstall() so that critical sections
are shorter
- Fix CAN gpio configuration bug on RX pin. Closes #2302
- Add docs about multiple ID configuration and fix example links
This commit is contained in:
Darian Leung
2018-08-28 21:13:20 +08:00
parent ba17648aea
commit dc3fa14a26
5 changed files with 117 additions and 54 deletions
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docs/en/api-reference/system/power_management.rst
+3 -1
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@@ -112,7 +112,7 @@ Currently, the following peripheral drivers are aware of DFS and will use ``ESP_
The following drivers will hold ``ESP_PM_APB_FREQ_MAX`` lock while the driver is enabled:
- SPI slave — between calls to :cpp:func:`spi_slave_initialize` and cpp:func:`spi_slave_free`.
- SPI slave — between calls to :cpp:func:`spi_slave_initialize` and :cpp:func:`spi_slave_free`.
- Ethernet — between calls to :cpp:func:`esp_eth_enable` and :cpp:func:`esp_eth_disable`.
@@ -120,6 +120,8 @@ The following drivers will hold ``ESP_PM_APB_FREQ_MAX`` lock while the driver is
- Bluetooth — between calls to :cpp:func:`esp_bt_controller_enable` and :cpp:func:`esp_bt_controller_disable`.
- CAN - between calls to :cpp:func:`can_driver_install` and :cpp:func:`can_driver_uninstall`
The following peripheral drivers are not aware of DFS yet. Applications need to acquire/release locks when necessary:
- I2C