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deadprogram
b14ee51ff6
This refactors and corrects the SPI implentation for the ESP32C3 and ESP32S3 processors. There was a lot of duplicated code, as well as some errors such as incorrectly calculating speed on the esp32c3 implementation. This will also be helpful when adding additional processors that use very similar peripheral registers. Signed-off-by: deadprogram <ron@hybridgroup.com>
30 lines
963 B
Go
30 lines
963 B
Go
//go:build !baremetal || atmega || attiny85 || esp32 || esp32c3 || esp32s3 || fe310 || k210 || nrf || (nxp && !mk66f18) || rp2040 || rp2350 || sam || (stm32 && !stm32f7x2 && !stm32l5x2)
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package machine
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import "errors"
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// SPI phase and polarity configs CPOL and CPHA
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const (
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Mode0 = 0
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Mode1 = 1
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Mode2 = 2
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Mode3 = 3
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)
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var (
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ErrTxInvalidSliceSize = errors.New("SPI write and read slices must be same size")
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errSPIInvalidMachineConfig = errors.New("SPI port was not configured properly by the machine")
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)
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// If you are getting a compile error on this line please check to see you've
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// correctly implemented the methods on the SPI type. They must match
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// the interface method signatures type to type perfectly.
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// If not implementing the SPI type please remove your target from the build tags
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// at the top of this file.
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var _ interface { // 2
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Configure(config SPIConfig) error
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Tx(w, r []byte) error
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Transfer(w byte) (byte, error)
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} = (*SPI)(nil)
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