circuitpython/atmel-samd/boards/cplay_m0_flash/mpconfigboard.h

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#define USB_REPL
#define MICROPY_HW_BOARD_NAME "Adafruit Circuit Playground M0 (Experimental)"
#define MICROPY_HW_MCU_NAME "samd21g18"
//#define MICROPY_HW_LED_MSC PIN_PA17
#define SPI_FLASH_BAUDRATE (1000000)
// On-board flash
#define SPI_FLASH_MUX_SETTING SPI_SIGNAL_MUX_SETTING_E
// Use default pinmux for the chip select since we manage it ourselves.
// Rev B:
// #define SPI_FLASH_PAD0_PINMUX PINMUX_PA12D_SERCOM4_PAD0 // MISO
// #define SPI_FLASH_PAD1_PINMUX PINMUX_DEFAULT // CS
// #define SPI_FLASH_PAD2_PINMUX PINMUX_PB10D_SERCOM4_PAD2 // MOSI
// #define SPI_FLASH_PAD3_PINMUX PINMUX_PB11D_SERCOM4_PAD3 // SCK
// Rev C:
#define SPI_FLASH_PAD0_PINMUX PINMUX_PA16D_SERCOM3_PAD0 // MISO
#define SPI_FLASH_PAD1_PINMUX PINMUX_DEFAULT // CS
#define SPI_FLASH_PAD2_PINMUX PINMUX_PA20D_SERCOM3_PAD2 // MOSI
#define SPI_FLASH_PAD3_PINMUX PINMUX_PA21D_SERCOM3_PAD3 // SCK
#define SPI_FLASH_CS PIN_PB22
// rev B: #define SPI_FLASH_SERCOM SERCOM4
#define SPI_FLASH_SERCOM SERCOM3
// PA24 and PA25 are USB.
#define MICROPY_PORT_A (PORT_PA16 | PORT_PA20 | PORT_PA21 | PORT_PA24 | PORT_PA25)
#define MICROPY_PORT_B (PORT_PB22)
#define AUTORESET_DELAY_MS 500
#include "spi_flash.h"
#define BOARD_FLASH_SIZE (0x00040000 - 0x2000)
#define CALIBRATE_CRYSTALLESS 1