Crate metro_m4

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Board support crate for Adafruit’s Metro M4 Express, an ATSAMD51-based board in an ‘Arduino compatible’ shape and pinout

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  • BSP replacement for the HAL Pins type

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  • Convenience for setting up the labelled SDA, SCL pins to operate as an I2C master running at the specified frequency.
  • Convenience for setting up the onboard QSPI flash. Enables the clocks for the QSPI peripheral in single data rate mode assuming 120MHz system clock, for 4MHz QSPI mode 0 operation.
  • Convenience for setting up the 2x3 header block for SPI. This powers up SERCOM2 and configures it for use as an SPI Master in SPI Mode 0.
  • Convenience for setting up the labelled RX, TX pins to operate as a UART device running at the specified baud.

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