STM32F4 I2s On different Pins #4
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Is there a way to allow me to use SPI 2 for the I2S Instance? I have my blackpill wired up to use pins PB12-WS, PB13-BCK, and PB15 as data out to an amp. Im using the blackpoll to control and determine which folders to retrieve audio from an SD Breakout board. |
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Replies: 1 comment 3 replies
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On STM processors only some defined pins can be used for I2S. I assume that your pins can be used for your processor variant. The pins are defined in the stm32-config-i21.h configuration file. Feel free to edit your local file... |
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I was able to initiate it in CubeMX, so that's why I chose those pins to make wiring my circuit board a little simpler since the pins were grouped close together. I'll give changing the pin names a try. Would I have to change the I2S3 to I2S2? Also, by pin names in the config file there - "{mclk, PB_10, GPIO_AF6_SPI3}," - Would I have to change GPIO_AF6_SPI3 to anything else? |
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Yes you would need to use the codes proposed by CubeMX |
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I always only used it on SPI3. To support SPI2 you might need to extend the logic a bit.. |
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On STM processors only some defined pins can be used for I2S. I assume that your pins can be used for your processor variant.
The pins are defined in the stm32-config-i21.h configuration file.
Feel free to edit your local file...