michaelh/zephyr
1
0
Fork 0
Code Releases Activity

board: 96b_argonkey: Add on-board MP34DT05 microphone support in BSP

Browse source 
This commit is taking care of following stuff:

1. pinmux: STM32F4 micro is using I2S5_CK and I2S_SD to interface with
   on-board microphone.

2. default configuration:
     - enable I2S5 and configure PLLI2S properly to generate
       I2SxCLK = 128MHz.
     - enable DMA

Note:
 As stated in issue #9028 we needed to take care of a known SPI/I2S bug
 implementing the following two actions:

 A. APB2 clock has been slowed down to 42MHz.
 B. The SPI/I2S clock gpio speed has been set to very_high_speed.

Signed-off-by: Armando Visconti <armando.visconti@st.com>
This commit is contained in:
Armando Visconti 2018-06-15 10:46:13 +02:00 • committed by Anas Nashif
commit 770197925b
5 changed files with 50 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

4
boards/arm/96b_argonkey/96b_argonkey.dts
View file

@ -68,6 +68,10 @@
};
};
&i2s5 {
status = "ok";
};
&i2c1 {
status = "ok";
clock-frequency = <I2C_BITRATE_FAST>;