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Update README file

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This commit is contained in:
Gregory Nutt 2018-05-19 17:32:56 -06:00
parent 9da3d4a2a9
commit 6529a5666e
2 changed files with 14 additions and 3 deletions
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11
configs/olimex-lpc1766stk/README.txt
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@ -157,13 +157,20 @@ Olimex LPC1766-STK development board
MISO0 and MOSI0 are join via a 1K ohm resistor so the LCD appears to be
write only.
STATUS: The LCD driver was never properly integrated. It is awkward
to used because it relies on a 9-bit SPI inteface (the 9th bit being
STATUS: The LCD driver was never properly integrated. It was awkward
to use because it relied on a 9-bit SPI inteface (the 9th bit being
the command/data bit which is normally a discrete input). All support
for the Nokia 6100 was removed on May 19, 2018. That obsoleted
driver can be viewed in the nuttx/drivers/lcd and configs/olimex-lpc1766stk
directories of the Obsoleted repository.
The obsoleted driver attempted to created the 9th bit on-they-flay in the
data by expanding the 8-bit data to 16-bits with the 9th bit managed. I
no longer believe that is the correct technical approach. I now believe
that the best solution would be to provide custom management of the 9th
data bit inside of the low-level MCU driver, the LPC17 SPI driver in thisi
case, via a configration option on the low-level driver.
LEDs
^^^^

6
configs/stm32f4discovery/README.txt
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@ -1198,7 +1198,8 @@ Configuration Sub-directories
The original CS43L22 and STM32 I2S drivers were contribued by Taras
Drozdovsky in May of 2017. The audio configuration was contributed by
Alan Carvalho de Assis and derives, in part, from the work of Taras at https://github.com/tdrozdovskiy/CS43L22-Audio-driver.
Alan Carvalho de Assis and derives, in part, from the work of Taras at
https://github.com/tdrozdovskiy/CS43L22-Audio-driver.
Usage instructions from the README file at the location:
@ -1219,6 +1220,9 @@ Configuration Sub-directories
$ cp <repo>/audio_samples/* /mnt/media/music/
You should be able to use either Taras' .wav files like that or, if
you like, your own compatible .wav files.
2. Example usage CS43L22 Audio driver
a. Power On or reset the STM32F4 Discovery board. We can see the Nuttx