28 lines
1.2 KiB
C
28 lines
1.2 KiB
C
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#define MICROPY_HW_BOARD_NAME "Seeed Xiao"
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#define MICROPY_HW_MCU_NAME "SAMD21G18A"
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// MicroPython configs
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// samd_flash.c flash parameters
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// Build a 64k Flash storage at top. 256k-64k=196k
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// 256*1024=262144 minus 64*1024=65536 = 196608 = 0x30000
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#define MICROPY_HW_FLASH_STORAGE_BASE (0x30000)
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#define MICROPY_HW_FLASH_STORAGE_BYTES (0xFFFF)
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#define VFS_BLOCK_SIZE_BYTES (1536) // 24x 64B flash pages;
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// ASF4 MCU package specific Pin definitions
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#include "samd21g18a.h"
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// Please consult the SAM_D21 Datasheet, I/O Multiplexing and Considerations.
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// XIAO_M0 USART pin assignments: Tx=A6=PB8=SERCOM4/PAD[0], Rx=PB9=A7=SERCOM4/PAD[1]
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#define CPU_FREQ (48000000) // For selecting Baud from clock.
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#define MP_PIN_GRP 1 // A=0, B=1
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#define MP_TX_PIN 8 // 'n'
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#define MP_RX_PIN 9
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#define MP_PERIPHERAL_MUX 4 // 'n'th group of 2 pins
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#define USARTx SERCOM4 // SERCOM4:XIAO_M0 tx/rx
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#define MP_PORT_FUNC 0x33 // Sets PMUXE & PMUXO to the Alternative Function.A-H=0-7
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#define MP_RXPO_PAD 1 // RXPO- Receive Data Pinout
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#define MP_TXPO_PAD 0 // TXPO- Tranmit Data Pinout
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#define MP_SERCOMx SERCOM4_ // APBCMASK
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#define MP_SERCOM_GCLK_ID_x_CORE GCLK_CLKCTRL_ID_SERCOM4_CORE // Generic Clock Control
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