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3d5e690977
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9 Commits

Author SHA1 Message Date
Michael Spahlinger
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
Gregory Nutt
cea3854dea PCA5555: Add logic to make the driver thread safe. Problem noted by Stefan Kolb. 2016-02-03 12:39:11 -06:00
Gregory Nutt
10000841a8 The I2C_TRANSFER method is no longer optional 2016-01-31 14:16:05 -06:00
Gregory Nutt
3a781a2d3f Remove I2C slave methods from I2C master interface; rename i2c_dev_s to i2c_master_s. 2016-01-30 08:36:47 -06:00
Gregory Nutt
ceb415204e Move include/nuttx/i2c.h to include/nuttx/i2c/i2c_master.h 2016-01-30 08:00:16 -06:00
Gregory Nutt
d4a53ee131 I2C: Eliminate the I2C_WRITEREAD method 2016-01-26 10:26:16 -06:00
Gregory Nutt
8ab93fdf98 Change name of drivers/discrete back to drivers/ioexpander 2015-12-15 08:40:34 -06:00
Gregory Nutt
cbb78071b3 Rename ioexpander/ directories to discrete/ 2015-11-01 13:14:48 -06:00
Sebastien Lorquet
b947002d6a This commit adds: 
-headers in nuttx/ioexpander to define the "generic" ioexpander framework
-files in drivers/ioexpander for the implementation of the NXP PCA9555 framework
-bindings in drivers/Kconfig and drivers/Makefile

From Sebastien Lorquet
 2015-07-09 08:27:07 -06:00