kopia lustrzana https://github.com/micropython/micropython
45 wiersze
1.8 KiB
C
45 wiersze
1.8 KiB
C
// Deinitions common to all SAMD51 boards
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#include "samd51.h"
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#define MICROPY_FLOAT_IMPL (MICROPY_FLOAT_IMPL_FLOAT)
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#define MICROPY_PY_BUILTINS_COMPLEX (0)
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#define MICROPY_PY_MATH (0)
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#define MICROPY_PY_CMATH (0)
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#define MICROPY_PY_UOS_URANDOM (1)
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#define MICROPY_PY_URANDOM_SEED_INIT_FUNC (trng_random_u32())
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unsigned long trng_random_u32(void);
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// Due to a limitation in the TC counter for us, the ticks period is 2**29
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#define MICROPY_PY_UTIME_TICKS_PERIOD (0x20000000)
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// MicroPython configs
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// samd_flash.c flash parameters
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// Build a 128k Flash storage at top. 512k-128k=384k=0x60000
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// 512*1024= 0x80000 minus 128*1024= 0x20000 = 0x60000
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#define MICROPY_HW_FLASH_STORAGE_BASE (0x60000)
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#define MICROPY_HW_FLASH_STORAGE_BYTES (0x1FFFF)
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#define VFS_BLOCK_SIZE_BYTES (1536) //
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#define CPU_FREQ (120000000)
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#define APB_FREQ (48000000)
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#define DPLLx_REF_FREQ (32768)
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#define NVIC_PRIORITYGROUP_4 ((uint32_t)0x00000003)
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#define IRQ_PRI_PENDSV NVIC_EncodePriority(NVIC_PRIORITYGROUP_4, 7, 0)
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static inline uint32_t raise_irq_pri(uint32_t pri) {
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uint32_t basepri = __get_BASEPRI();
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// If non-zero, the processor does not process any exception with a
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// priority value greater than or equal to BASEPRI.
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// When writing to BASEPRI_MAX the write goes to BASEPRI only if either:
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// - Rn is non-zero and the current BASEPRI value is 0
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// - Rn is non-zero and less than the current BASEPRI value
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pri <<= (8 - __NVIC_PRIO_BITS);
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__ASM volatile ("msr basepri_max, %0" : : "r" (pri) : "memory");
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return basepri;
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}
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// "basepri" should be the value returned from raise_irq_pri
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static inline void restore_irq_pri(uint32_t basepri) {
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__set_BASEPRI(basepri);
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}
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