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5 Commits

Author SHA1 Message Date
Xiang Xiao
6a3c2aded6 Fix wait loop and void cast (#24) 
* Simplify EINTR/ECANCEL error handling

1. Add semaphore uninterruptible wait function
2 .Replace semaphore wait loop with a single uninterruptible wait
3. Replace all sem_xxx to nxsem_xxx

* Unify the void cast usage

1. Remove void cast for function because many place ignore the returned value witout cast
2. Replace void cast for variable with UNUSED macro
 2020-01-02 10:54:43 -06:00
Augusto Fraga Giachero
08b596d26d rch/arm/src/lpc17xx_40xx/lpc17_40_i2c.c: Respect the I2C_M_NOSTART flag. Sending a restart condition when not requested will break other drivers that depend on this behavior. 2019-09-17 16:14:58 -06:00
Augusto Fraga Giachero
f0b74380a5 arch/arm/src/lpc17xx_40xx/lpc17_40_i2c.c: Calculate the appropriate timeout for I2C transfers. Depending on the bus frequency and transfer size, I2C transactions can take quite a bit, so a fixed timeout is not a good solution. Calculating the timeout at run time poses some overhead but still better than aborting long transactions. 2019-07-25 13:07:28 -06:00
Augusto Fraga Giachero
38b9862902 arch/arm/src/lpc17xx_40xx/lpc17_40_i2c.c: Abort I2C transfers if a timeout has occurred. If a timeout has occurred in the middle of a I2C transfer, the next I2C interrupt should abort any transfers and send a stop condition to the corresponding I2C bus. Failed to do so will result in memory corruption / undefined behavior as priv->msgs points to a region of memory it doesn't owns anymore after lpc17_40_i2c_start returns. 2019-07-25 08:33:31 -06:00
jjlange
e5dfd805e6 Merged in jjlange/nuttx/lpc40xx (pull request #946) 
Add support for LPC40xx family chips

* Corrected a few peripheral definitions and pin functions for the LPC17xx family.
    Added configuration options, chip definitions, and additional pin functions for the LPC40xx family.
    Added board configurations for Embedded Artists LPC4088 Quickstart board and LPC4088 Developer's kit.  These configurations are still something of a work in progress.  In particular, the LCD functionality is untested.

* First pass rename in *.c and *.h files.

* Renamed LPC17XX to LPC17XX_40XX in config files

* Rplaced LPC17xx with LPC17xx/LPC40xx in .c files

* Replaced LPC17xx with LPC17xx/LPC40xx in .h files

* Updated some documentation

* Working on moving directories

* moved arch/arm/src/lpc17xx and arch/arm/include/lpc17xx to lpc17xx_40xx

* Renamed LPC17_* constants / configuration options to LPC17_40_*

* Updated chip family name defines

* Renamed some chip-specific files

* Updated references to renamed files

* Updated references to lpc17_ to lpc17_40_

* Renamed source files from lpc17_* to lpc17_40_*

* Clean up white space

Approved-by: Gregory Nutt <gnutt@nuttx.org>
 2019-07-11 16:50:00 +00:00