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56 Commits

Author SHA1 Message Date
Ivan Mikhaylov
fdab66958e uart: add 4800 baud speed 
Signed-off-by: Le Jin <le.jin@siemens.com>
Signed-off-by: Ivan Mikhaylov <fr0st61te@gmail.com>
 2022-08-05 12:04:23 -07:00
Ivan Mikhaylov
4450073721 uart: disable timeout on read <= 0 
Signed-off-by: Le Jin <le.jin@siemens.com>
Signed-off-by: Ivan Mikhaylov <ivan.mikhaylov@siemens.com>
 2022-08-05 12:04:23 -07:00
Ivan Mikhaylov
307a6f3bdd mux: add mux interface 
Add mux_init_reg interface with different mux modes for GPIO, UART, SPI,
I2C, PWM, AIO.

Signed-off-by: Le Jin <le.jin@siemens.com>
Signed-off-by: Ivan Mikhaylov <ivan.mikhaylov@siemens.com>
 2022-08-05 12:04:23 -07:00
Jan Kiszka
11e65ee9bf uart: Convert rtscts and xonxoff in mraa_uart_settings into mraa_boolean_t 
This aligns the getter with the setter (mraa_uart_set_flowcontrol).

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
 2021-06-29 11:48:16 -07:00
Jan Kiszka
aeb0b331b5 uart: Fix software flow control management 
Rather than updating IXON/IXOFF in termios, mraa_uart_set_flowcontrol
was incorrectly issuing a stop or start character on mode changes. This
lead to spurious transmission in setups that actually wanted to disable
software flow control. And it prevented enabling it (which could have
been checked also by reading back the state via mraa_uart_settings).

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
 2021-06-29 11:48:16 -07:00
Benxi Liu
3b2f80b6e2 uart: fix xonxoff value in mraa_uart_settings() 
the value of xonxoff(IXON|IXOFF) resides in the c_iflag field in
struct termios, not c_cflag.

Signed-off-by: Benxi Liu <bxliu@linux.alibaba.com>
 2019-12-03 07:52:58 -08:00
Thomas Ingleby
170bdd104f spdx: add spdx tags to most files 
Large change that removes the duplicated MIT notice withe a spdx tag

Signed-off-by: Thomas Ingleby <thomas.ingleby@intel.com>
 2019-05-23 10:09:12 -07:00
Nicola Lunghi
45127e04b9 Add support for UART hardware flow control 
This allows assigning platform pins to the CTS/RTS lines.
If provided, these will be muxed as UART when flow control is enabled.

Signed-off-by: Nicola Lunghi <nicola.lunghi@emutex.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2017-09-12 11:48:02 +02:00
Alex Tereschenko
822160b7de uart.c: fix potential use of uninitialized variable 
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2017-05-29 18:47:45 +02:00
Tapani Utriainen
a6f2464bb1 uart: add a function to query current UART settings 
This patch adds a function to query UART settings in an unintrusive way.
It can be used using a uart index or a devpath and it strives to just
read out the settings without affecting the state of the UART.

Signed-off-by: Tapani Utriainen <tapani@technexion.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2017-05-28 08:11:21 +02:00
Tapani Utriainen
04c5593cef uart.c: add function to return baudrate as an integer from a speed_t 
Signed-off-by: Tapani Utriainen <tapani@technexion.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2017-05-28 08:11:21 +02:00
Tapani Utriainen
818ae995c2 uart.c: fix return value for invalid baudrates in uint2speed 
This patch probably changes no functionality.

Before this patch the return value 0 was used for invalid baudrates in
uint2speed, but this is not a proper speed_t constant.
Instead the constant B0 is returned now, since on x86 and arm linux
architectures B0 is defined as 0.

Signed-off-by: Tapani Utriainen <tapani@technexion.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2017-05-28 08:11:21 +02:00
Tapani Utriainen
e7b0a3e809 uart: add a null pointer check before dereferencing plat->adv_func 
Signed-off-by: Tapani Utriainen <tapani@technexion.com>
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
 2017-05-15 21:00:34 +02:00
Jon Trulson
e0a0dac47b uart: add tcsendbreak support 
Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
 2017-05-08 21:15:33 +02:00
Brendan Le Foll
69fcd861a7 android-things: Peripheralmanager target build 
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2017-04-24 14:42:54 -07:00
Brendan Le Foll
4c7616fe91 android-things: Prep for peripheralmanager support 
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2017-04-24 14:42:54 -07:00
Nicola Lunghi Emutex
2ea68105f0 uart.c: Simple compiler error fixes 
Signed-off-by: Nicola Lunghi Emutex <nicola.lunghi@emutex.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2017-02-06 21:34:13 +00:00
Brendan Le Foll
1c180e393c uart.c: Allocate mem for dev->path to fix getDevicePath in raw mode 
When mraa_init_uart_raw is called it places the path arg in dev->path. This
works in non raw mode because the path is statically in the device
configuration but in raw mode this is a dynamic address meaning that we need to
copy it. Fix this by simply copying the device path rather than relying on the
user keeping that string path in memory.

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2016-11-30 11:33:40 +01:00
Alex Tereschenko
9f03afbcbc mock: implement UART functionality 
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2016-10-25 12:04:04 +01:00
Alex Tereschenko
8a9efd1bcc uart.c: add replace functions used by mock 
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2016-10-25 12:04:04 +01:00
Alex Tereschenko
1b3a9371a1 uart.c: rework mraa_uart_init_raw to use common cleanup block 
This will align it with spi.c and make it easier to introduce
a replace function.

Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2016-10-25 12:04:04 +01:00
Alex Tereschenko
1af737f3d9 mock: mraa with mock platform now works in Windows under MSYS2 
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2016-07-05 19:32:58 +01:00
wda2945
1ebe377487 uart.c: Improve error handling 
Changed syslog messages and some error returns.

Signed-off-by: Martin G Lane-Smith <mlanesmith@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2016-04-15 14:02:02 +01:00
Shiran Ben-Melech
cae63bbd52 firmata: Added option to set uart non blocking state 
Signed-off-by: Shiran Ben-Melech <shiran.ben-melech@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2016-03-22 18:12:29 +00:00
Bernd Kuhls
7fce2e2a3a uart.c: fix build with musl libc 
musl does not define CMSPAR on all archs, patch inspired by
http://git.alpinelinux.org/cgit/aports/plain/main/freerdp/musl-fix.patch

musl needs sys/select.h to provide fd_set.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2016-02-02 10:37:31 +00:00
Henry Bruce
63604ef5cc uart: Added timeout support for uart read 
Signed-off-by: Henry Bruce <henry.bruce@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2016-01-06 10:38:51 +00:00
Srinivas Kandagatla
38aa9e8fe6 uart.c: make use of no_bus_mux flag 
This patch makes use of no_bus_mux flag in mraa_board_t to skip
unnessary mux checks.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-12-14 11:00:04 +00:00
Alex Tereschenko
2dd46494ff uart.c: fixed typo in debug output 
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-11-18 13:55:53 +00:00
damcclos
c89b04eb19 uart.c: fix to UART even parity 
Signed-off-by: David McCloskey <davmcclo@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-10-26 16:00:18 +00:00
Brendan Le Foll
07343e2ee7 mraa: Remove global advance_func struct and place it in platform configuration 
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-09-08 14:42:04 +01:00
Brendan Le Foll
cfff6c3c98 uart.c: Fix return value check for tcflush() 
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-09-02 14:39:54 +01:00
Alex Tereschenko
6d39902a8a uart.c: Fixed UART initialization, now we set and apply defaults 
Closes #221.

Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-07-22 11:07:04 +01:00
Thomas Ingleby
fd50ea087b uart: fix issue where a index is checked before set 
Related to #152

Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
 2015-06-29 19:51:34 +01:00
Brendan Le Foll
b4655b250b uart.c: Fix some wrong return checks 
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-06-02 08:42:37 +01:00
Jon Trulson
b142f3fdda uart: fix missing inversion that will clear all other flags 
Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-06-01 11:20:18 +01:00
Brendan Le Foll
236a8e9586 uart: make mraa_uart_get_dev_path return const char* 
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-06-01 10:54:40 +01:00
Brendan Le Foll
347fd449f9 uart: Make C API use const where appropriate 
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-06-01 09:36:00 +01:00
Thomas Ingleby
b982160ec5 uart: update C API 
Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
 2015-05-28 23:31:12 +01:00
Brendan Le Foll
19cad5cf24 uart: bunch of small changes to make C api work 
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-05-28 23:31:11 +01:00
Brendan Le Foll
b02f8b4d50 uart.c: add missing return values 
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-05-28 23:31:11 +01:00
Thomas Ingleby
4d86860e0c uart: remove un-needed includes from uart.h 
No need for many included

Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
 2015-05-28 23:31:11 +01:00
Thomas Ingleby
7e47b05c8f uart: move internal static function to top of file 
Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
 2015-05-28 23:31:11 +01:00
Brendan Le Foll
0a516ef3bf uart: make initial dump of uart module 
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-05-28 23:31:11 +01:00
Jon Trulson
88f3052d99 uart: use an unsigned int for baud rate rather than speed_t 
uart.c contains a static conversion function that will translate known
baud rates into their speed_t counter parts.  If an unsupported baud
rate is selected, a diagnostic will be emitted via syslog and a
default of B9600 will be chosen.

Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-05-28 23:31:11 +01:00
Jon Trulson
c30457e434 uart: add capability to check if data can be read from device 
Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-05-28 23:31:11 +01:00
Jon Trulson
cf14939cca uart: add uart device read and write functionality 
Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-05-28 23:31:11 +01:00
Jon Trulson
6d269eeabd uart: add uart device open and close functionality 
Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-05-28 23:31:11 +01:00
Jon Trulson
bdadbb8b01 uart: add fd (file descriptor) to uart context 
Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-05-28 23:31:11 +01:00
Jon Trulson
dd807308ac uart.c: mraa_uart_get_dev_path return NULL on error 
Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
 2015-02-19 10:48:02 +00:00
Thomas Ingleby
25bd897ec5 uart: use const char* instead of plain char* 
Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
 2015-01-20 17:14:12 +00:00