zephyr

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Tree: d0816a1a60

Commit Graph

Author	SHA1	Message	Date
Thomas Stranger	d0816a1a60	drivers: w1: updates to reflect analog maxim acquisition Links and the manufacturer name are updated from maxim to analog for the 1-wire subsystem and the related ds18b20 sensor. After the acquisition of Maxim Integrated the documentation of these devices has been moved to the analog.com website. Redirects exist, so they are not broken yet, but we should not rely on that. Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>	8 months ago
Nicolas Pitre	531aa5786d	drivers: move to timepoint API Remove sys_clock_timeout_end_calc() usage. Signed-off-by: Nicolas Pitre <npitre@baylibre.com>	2 years ago
Thomas Stranger	d668281b4a	drivers: w1: add zephyr-serial driver The zephyr-serial w1 driver introduced in this commit implements all routines for the w1 api on top of the zephyr serial driver. W1 bit read, write, and reset operations are executed by issuing polling zephyr serial byte read and write operations. The driver should be usable on most platforms in zephyr that have implemented support for the polling procedures of the serial driver. As not all serial drivers are implemented exactly the same minor additional quirks may be needed on some platforms. The most notable difference of polling serial driver implementations seems to be that some return immediately from poll_out after the transmission was started(e.g. STM32) and others wait until the transmission was completed before returning from poll_out (e.g. NRF). While this has influence on the timeout, both types are supported by this driver because the driver waits for a configurable time period until it terminates the read. The driver needs an appropriate open drain interface to be able to communicate with slaves. In the simpliest case this might be achived by configuring the mcu pins in open-drain configuration with a (sufficiently small) pull-up to 3V3/5V. Otherwise an external circuit needs to provide this interface. Overdrive and Standard Speed modes are supported by this driver. Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>	3 years ago

Author

SHA1

Message

Date

Thomas Stranger

d0816a1a60

drivers: w1: updates to reflect analog maxim acquisition

Links and the manufacturer name are updated from maxim to analog
for the 1-wire subsystem and the related ds18b20 sensor.

After the acquisition of Maxim Integrated the documentation
of these devices has been moved to the analog.com website.
Redirects exist, so they are not broken yet,
but we should not rely on that.

Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>

8 months ago

Nicolas Pitre

531aa5786d

drivers: move to timepoint API

Remove sys_clock_timeout_end_calc() usage.

Signed-off-by: Nicolas Pitre <npitre@baylibre.com>

2 years ago

Thomas Stranger

d668281b4a

drivers: w1: add zephyr-serial driver

The zephyr-serial w1 driver introduced in this commit implements
all routines for the w1 api on top of the zephyr serial driver.
W1 bit read, write, and reset operations are executed by issuing
polling zephyr serial byte read and write operations.

The driver should be usable on most platforms in zephyr that have
implemented support for the polling procedures of the serial driver.
As not all serial drivers are implemented exactly the same minor
additional quirks may be needed on some platforms.
The most notable difference of polling serial driver implementations
seems to be that some return immediately from poll_out after the
transmission was started(e.g. STM32) and others wait until
the transmission was completed before returning from poll_out
(e.g. NRF). While this has influence on the timeout, both types
are supported by this driver because the driver waits for a
configurable time period until it terminates the read.

The driver needs an appropriate open drain interface to be able
to communicate with slaves.
In the simpliest case this might be achived by configuring the mcu pins
in open-drain configuration with a (sufficiently small) pull-up to 3V3/5V.
Otherwise an external circuit needs to provide this interface.

Overdrive and Standard Speed modes are supported by this driver.

Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>

3 years ago

3 Commits (d0816a1a600dd6df2cfca8f6835e261dcadb0bbd)