0113b0db95
drivers: handle I2C_TRANSFER return value consistently. Some I2C peripherals transfers return zero on success, others number of completed transfers. Make drivers robust against this.
2017-08-04 07:31:36 -06:00
95e20afcd2
drivers/: Remove dangling space at the end of lines.
2017-06-28 13:17:17 -06:00
b3222bbc8a
irq_dispatch: Add argument pointer to irq_dispatch
...
Provide a user defined callback context for irq's, such that when
registering a callback users can provide a pointer that will get
passed back when the isr is called.
2017-02-27 06:27:56 -06:00
58c2cd2843
drivers/ioexpander: Add some debug output.
2016-11-08 07:46:25 -06:00
9965cbe428
drivers/: Review and correct some stylistic inconsistencies
2016-08-07 09:43:48 -06:00
3d5df2e5af
Extend I/O Expander interrupt controls; Add test of level sensitve interrupt to Simulated I/O expander
2016-08-04 16:19:52 -06:00
1f9799b68d
I/O Expanders: Interrupt detection logic should not ignore the no-change case. Still need to handle level interrupts even with no change.
2016-08-03 13:10:20 -06:00
803b540e8a
Fix various issues with I/O expander and GPIO lower half drivers from testing with simulated I/O expander
2016-08-03 12:46:54 -06:00
778a8131bf
SIM: Add a simulated I/O Expander driver
2016-08-03 09:44:48 -06:00
62bc64bc55
Back out last Makefile.unix change. After puzzling about this for a while, I moved the definitions to apps/Make.defs. Also includes some cosmetic changes to GPIO lower half driver comments.
2016-08-02 08:37:30 -06:00
9685fd8c99
GPIO driver: Add an IOCTL to unregister a signal handler
2016-08-01 13:52:27 -06:00
0f9fb09a53
GPIO driver: Add an IOCTL command to get the pin type
2016-08-01 12:09:00 -06:00
d0f6a23a32
Ooops.. forgot to add files before last commit
2016-08-01 11:15:29 -06:00
d47aa75669
Add PCF8574 I/O Expander driver. Some cleanup also of other expander drivers.
2016-08-01 11:10:11 -06:00
e0f3df5d97
Remove another lingering kruft
2016-08-01 10:01:28 -06:00
583dad647c
TCA64xx: Remove some unused kruft
2016-08-01 09:59:36 -06:00
9d9ff44736
GPIO lower half: Add conditional logic to handle the case where the I/O expander does not support interrupts.
2016-08-01 09:06:58 -06:00
bf60f11801
Remove some unnecessary header file inclusions
2016-08-01 08:55:13 -06:00
3e79ffc6dd
Some updates to the last commit
2016-08-01 08:49:15 -06:00
6090f69bfd
Add a GPIO lower-half driver that can be used to register a GPIO character driver for accessing pins on an I/O expander.
2016-08-01 08:43:10 -06:00
91b1006d42
I/O Expander Interface: Add argument to interrupt callback. Add a method to detach the interrupt.
2016-08-01 07:26:04 -06:00
fb84e51d5b
Minor improvements/fixes to the TCA64xx driver.
2016-08-01 06:48:05 -06:00
c0b83cb4b4
First (untested) cut at a TCA64XX I/O Expander driver leverages from Project Ara
2016-07-31 19:52:44 -06:00
8fab9fb00f
Rethink last commit -- probably going down the wrong path
2016-07-31 18:33:04 -06:00
8a67509b34
I/O Expander: Encode and extend I/O expander options to include interrupt configuration.
2016-07-31 18:19:59 -06:00
9f00d87c07
Another update to the I/O Expander skeleton.c file
2016-07-31 17:03:25 -06:00
bbe7a97685
Remove a duplicated line
2016-07-31 16:41:12 -06:00
b98a966135
Another update to the I/O Expander skeleton.c file
2016-07-31 16:39:44 -06:00
c6d65b0943
Update I/O Expander skeleton.c file
2016-07-31 15:43:36 -06:00
99843fe5fe
I/O Expander: Update skelton file
2016-07-31 14:42:30 -06:00
becf7e70c4
Add an I/O Expander skelton driver
2016-07-31 11:52:59 -06:00
5f9ee79298
I/O Expander: Remove hard-coded PCA9555 fields from ioexpander.h definitons. Add support for an attach() method that may be used when any subset of pin interrupts occur.
...
PCA9555 Driver: Replace the signalling logic with a simple callback using the new definitons of ioexpander.h. This repartitioning of functionality is necessary because (1) the I/O expander driver is the lower-lower part of any driver that uses GPIOs (include the GPIO driver itself) and should not be interacting directly with the much higher level application layer. And (2) in order to be compatible with the GPIO driver (and any arbitrary upper half driver), the PCA9555 should not directly signal, but should call back into the upper half. The upper half driver that interacts directly with the application is the appropriate place to be generating signal.
2016-07-31 11:09:47 -06:00
eb94cc5419
Update some comments
2016-07-24 12:48:37 -06:00
2d92bffdcc
Trivial change left in editor
2016-07-23 13:53:37 -06:00
a932578e76
GPIO driver: Add support for receiving signals from interrupt pins.
2016-07-23 13:53:06 -06:00
0690391d42
ioexpander/gpio: Add missing argument to gpin_read and gpout_read
2016-07-05 15:55:16 -04:00
3d5e690977
Shadow-Mode: The output- and configuration registers of the IO-Expander
...
are held in the microcontrollers memory and only written to the IO-Expander.
This reduces bus traffic and is more error-proof than the normal read-
modify-write operation.
Retry Mode: If enabled and an error occurs while writing to the IO-Expander the
current transmission is automatically repeated once.
2016-06-27 08:11:54 -06:00
b16fdaf155
Some small improvements to GPIO driver
2016-06-26 11:24:35 -06:00
db50f13511
Correct some typos in DEBUGASSERT statements
2016-06-24 14:34:21 -06:00
20708c7c5e
GPIO driver: Fix inconsistency in naming; beef up a debug assertion.
2016-06-24 11:32:24 -06:00
ae19ca45e0
drivrs/ioexpander: Add support for a very simple GPIO drivers. It supports only pre-conrigured input and output pins and only basic input and output operations.
2016-06-24 09:43:49 -06:00
9fd3db6293
PCA9555: Fix condition where GPIO interrupt is not re-enabled.
2016-04-20 09:59:16 -06:00
35df528f69
PCA9555: Remove duplicate variable declaration
2016-02-23 07:33:52 -06:00
cea3854dea
PCA5555: Add logic to make the driver thread safe. Problem noted by Stefan Kolb.
2016-02-03 12:39:11 -06:00
e5d86dd3fc
Oops. Apparently a copy'n'paste was accidentally a cut'n'paste
2016-02-02 12:53:32 -06:00
009e9f76cb
I2C: Fixes/improvements from last massive I2C commits
2016-02-02 07:13:03 -06:00
69ce24c70c
I2C: Remove the setfrequency method from the interface
2016-02-01 16:31:13 -06:00
f9053182d3
I2C: Remove setaddress method
2016-02-01 12:14:31 -06:00
8c9bddf998
I2C: Eliminate the I2C_WRITE and I2C_READ macros
2016-02-01 08:57:22 -06:00
10000841a8
The I2C_TRANSFER method is no longer optional
2016-01-31 14:16:05 -06:00
Juha Niskanen