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Update a readme and some comments.

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This commit is contained in:
Gregory Nutt 2018-05-27 15:13:54 -06:00
parent f3392e0a6c
commit c74e9fd6da
2 changed files with 12 additions and 2 deletions
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7
configs/olimex-stm32-p407/README.txt
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@ -481,5 +481,10 @@ STATUS
CCM memory is not included in the heap (CONFIG_STM32_CCMEXCLUDE=y) because
it does not suport DMA, leaving only 128KiB for program usage.
2107-01-23: Added the knsh configuration and support for the PROTECTED
2017-01-23: Added the knsh configuration and support for the PROTECTED
build mode.
2018-05-29: Added the zmodem configuration. Verified correct operation
with host-to-target transfers. There appears to be problems still host
target-to-host transfers and with use of the NuttX versions of rx/sz on
the host.

7
drivers/serial/serial.c
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@ -474,7 +474,12 @@ static int uart_tcdrain(FAR uart_dev_t *dev, systime_t timeout)
* this event, so we have to do a busy wait poll.
*/
/* Set up for the timeout */
/* Set up for the timeout
*
* REVISIT: This is a kludge. The correct fix would be add an
* interface to the lower half driver so that the tcflush() operation
* all also cause the lower half driver to clear and reset the Tx FIFO.
*/
start = clock_systimer();