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Added Clocks Config Page
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Kevin Parker
Kevin Parker
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The STM32 seems to be a nightmare... Just such weird issues constantly. Anyways, I'm trying to output Master I2S (with BCLK, no MCLK) at 16 kHz, but for some reason am getting a 1.027 MHz clock causing audio artifacts. Input clock is PLL2 or PLL3, doesn't make a difference at 2.048 MHz or 20.48 MHz, doesn't make a difference...

Any ideas?

enter image description here enter image description here enter image description here enter image description here

The STM32 seems to be a nightmare... Just such weird issues constantly. Anyways, I'm trying to output Master I2S (with BCLK, no MCLK) at 16 kHz, but for some reason am getting a 1.027 MHz clock causing audio artifacts. Input clock is PLL2 or PLL3, doesn't make a difference at 2.048 MHz or 20.48 MHz, doesn't make a difference...

Any ideas?

enter image description here enter image description here enter image description here

The STM32 seems to be a nightmare... Just such weird issues constantly. Anyways, I'm trying to output Master I2S (with BCLK, no MCLK) at 16 kHz, but for some reason am getting a 1.027 MHz clock causing audio artifacts. Input clock is PLL2 or PLL3, doesn't make a difference at 2.048 MHz or 20.48 MHz, doesn't make a difference...

Any ideas?

enter image description here enter image description here enter image description here enter image description here

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brhans
brhans
  • 14.8k
  • 3
  • 36
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The STM32 seems to be a nightmare... Just such weird issues constantly. Anyways, I'm trying to output Master I2S (with BCLK, no MCLK) at 16 KhzkHz, but for some reason am getting a 1.027 MhzMHz clock causing audio artifacts. Input clock is PLL2 or PLL3, doesn't make a difference at 2.048 MhzMHz or 20.48 MhzMHz, doesn't make a difference...

Any ideas?

enter image description here enter image description here enter image description here

The STM32 seems to be a nightmare... Just such weird issues constantly. Anyways, I'm trying to output Master I2S (with BCLK, no MCLK) at 16 Khz, but for some reason am getting a 1.027 Mhz clock causing audio artifacts. Input clock is PLL2 or PLL3, doesn't make a difference at 2.048 Mhz or 20.48 Mhz, doesn't make a difference...

Any ideas?

enter image description here enter image description here enter image description here

The STM32 seems to be a nightmare... Just such weird issues constantly. Anyways, I'm trying to output Master I2S (with BCLK, no MCLK) at 16 kHz, but for some reason am getting a 1.027 MHz clock causing audio artifacts. Input clock is PLL2 or PLL3, doesn't make a difference at 2.048 MHz or 20.48 MHz, doesn't make a difference...

Any ideas?

enter image description here enter image description here enter image description here

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Kevin Parker
Kevin Parker
  • 21
  • 6

STM32 H7 - Outputs wrong I2S BCLK (1.027 Mhz pulses, expected 1.024)?

The STM32 seems to be a nightmare... Just such weird issues constantly. Anyways, I'm trying to output Master I2S (with BCLK, no MCLK) at 16 Khz, but for some reason am getting a 1.027 Mhz clock causing audio artifacts. Input clock is PLL2 or PLL3, doesn't make a difference at 2.048 Mhz or 20.48 Mhz, doesn't make a difference...

Any ideas?

enter image description here enter image description here enter image description here