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post/2023-06-07-twpm-spi-fix.md: remove duplicated section
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Signed-off-by: Maciej Pijanowski <[email protected]>
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macpijan committed Jul 28, 2023
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Expand Up @@ -62,12 +62,6 @@ described in the [STM32L476RG](https://www.st.com/resource/en/datasheet/stm32l47
datasheet in section 6.4. Table 72 describes the maximum frequency of GPIO
outputs.

Another limiting factor is maximum GPIO speed, which depends on operating
conditions such as the voltage provided to the MCU, ambient temperature, and
parameters of cables used to connect the master and slave. GPIO limitations are
described in the [STM32L476RG datasheet](https://www.st.com/resource/en/datasheet/stm32l476rg.pdf)
in section 6.4. Table 72 describes the maximum frequency of GPIO outputs.

More problematic may be DMA limitations. The hard limit of DMA transfer speed
would be 80 Mbits/s as 80 MHz is the maximum frequency that can be provided to
the AHB bus and the MCU. The actual transfer speed may be lower due to AHB and
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