diff --git a/configs/olimex-lpc1766stk/README.txt b/configs/olimex-lpc1766stk/README.txt index 6750e8a6e4..361acc49f6 100644 --- a/configs/olimex-lpc1766stk/README.txt +++ b/configs/olimex-lpc1766stk/README.txt @@ -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 ^^^^ diff --git a/configs/stm32f4discovery/README.txt b/configs/stm32f4discovery/README.txt index 2806868f4f..526108ce15 100644 --- a/configs/stm32f4discovery/README.txt +++ b/configs/stm32f4discovery/README.txt @@ -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 /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