SPI: improvements for SPI library #912
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- optimize spi_transfer routine to use LL instead of HAL - add SPISettings field for transmit only operations - replace spi_send with call to spi_transfer with SPI_TRANSMITONLY flag - allow SPI_TRANSFER_TIMEOUT redefinition Signed-off-by: Alexey Golyshin <stas2z@gmail.com>
spi_tranfer: factorize common code to simplify maintenance
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such blind send should be possible with dma, but don't know if any compatibility issues will rise |
it's not a blind send, it checks for the state before DR register access, this is exactly what HAL_SPI_TransmitRecieve does, but shorter and much faster cuz much overhead stuff dropped. But anyway, any compatibility tests are welcomed. Ive tested it with all my stm32 fleet available (f103/f401/f405/f051) but sure thats not enuff to be sure |
fpistm
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Feb 10, 2020
Signed-off-by: Alexey Golyshin <stas2z@gmail.com>
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Unfortunately i have no H7 or MP1 board to check |
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Thanks @stas2z I will test H7 and MP1 |
SPI: Dedicated start/stop transfer for STM32H7 and STM32MP1
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Linked to stm32duino#912. Signed-off-by: Frederic Pillon <frederic.pillon@st.com>
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Linked to stm32duino#912. Signed-off-by: Frederic Pillon <frederic.pillon@st.com>
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Linked to stm32duino#912. Signed-off-by: Frederic Pillon <frederic.pillon@st.com>
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Linked to stm32duino#912. Signed-off-by: Frederic Pillon <frederic.pillon@st.com>
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My suggestion for #898