King Kévin
61d65977ac
i2c: minor, fix spacing
2021-07-19 18:03:14 +02:00
King Kévin
e71515bcce
replace header license with SPDX statement
2020-06-10 19:04:41 +02:00
King Kévin
4b1651a1a3
i2c_master: fix writing function to cope with read function now including a stop
2020-02-27 13:09:10 +01:00
King Kévin
29226246f6
i2c_master: improve sending stop and integrated it into read function
2020-02-27 13:08:55 +01:00
King Kévin
4bfcca9d50
i2c_master: fix 1 byte read
2020-02-11 12:21:35 +01:00
King Kévin
25ce80b73a
i2c_master: minor, improve register read consistency
2020-02-11 12:20:13 +01:00
King Kévin
9f70665fbc
i2c_master: minor, revert test change
2019-12-12 21:35:10 +01:00
King Kévin
e087ff744d
i2c_master: fix line check
2019-12-12 21:31:51 +01:00
King Kévin
de66829811
i2c_master: minor, fix doc
2019-12-12 21:30:12 +01:00
King Kévin
230151a102
(minor) remove trailing spaces
2019-03-26 19:27:40 +01:00
King Kévin
f37a6ee4ef
I2C (minor): use CM3 assert instead if manual check
2019-03-26 18:35:46 +01:00
King Kévin
62b83fd34d
I2C (minor): add space around operators for readability
2019-03-26 18:25:23 +01:00
King Kévin
a50a181b86
I2C: fix read NACK
...
NACKing in receive mode is different when 1, 2, or more bytes are
read.
see the reference manual for the cases and how to handle them.
2019-03-26 18:12:22 +01:00
King Kévin
bf2eca0401
I2C: add timeout to stop
...
similar to the start condition, a timer will prevent it to block.
2019-03-26 18:11:17 +01:00
King Kévin
efbd228f8a
I2C: don't clear ADDR after select
...
to check if the slave has successfully been selected to read or
write and the master is in the corresponding receive or transmit
state, SR2 was checked.
but reading SR2 also cleared the ADDR bit, starting the read/write
transaction.
the check is done in the read/write methods anyway.
2019-03-26 18:07:26 +01:00
King Kévin
ef4685a9a3
I2C: don't block on reset
...
when resetting the GPIO lines are toggles.
when this is not effective it used to block.
not it just warns the used it failed.
2019-03-26 18:05:18 +01:00
King Kévin
396c7852e7
I2C: add timeout to send start condition
...
sometimes the internal state f the I2C peripheral is confused,
and sending a start condition is not possible and the
corresponding registers will not be set.
see the errata for more details.
as workaround a timer is used, resetting the I2C is case it times
out
2019-03-26 18:01:23 +01:00
King Kévin
593b0e0e25
take changes from busvoodoo branch
2018-04-03 16:59:02 +02:00
King Kévin
62bfaf3973
cherry-pick from busvoodoo branch, part 4
2018-02-18 15:21:18 +01:00
King Kévin
3b73f519da
doc: fix typo
2017-10-04 13:55:43 +02:00
King Kévin
6d3e826c18
add general I2C library
2017-04-03 13:07:03 +02:00
King Kévin