a1eebc507e
samd/machine_spi: Register SerCom objects as root pointers.
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Protect SerCom (UART, SPI, I2C) objects from getting freed by the GC when
they go out of scope without being deinitialized. Otherwise the ISR of a
Sercom may access an invalid data structure.
2022-10-25 23:48:37 +11:00
d74215a313
samd/machine_spi: Implement spi.deinit() and simplify sercom_deinit_all.
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The sercom_deinit_all() function does not need the object pointers.
2022-10-25 23:46:00 +11:00
4d38ab652e
samd: Make ADC, DAC, PWM, SPI objects consistent in how they print out.
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All of ADC, DAC, Pin, PWM and SPI looked different before this change.
2022-10-25 23:36:01 +11:00
d9338aabc5
samd: Change the symbol names for the peripheral clocks.
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From APB_FREQ to DFLL48M_FREQ, and from apb_freq to peripheral_freq.
2022-10-06 23:10:08 +11:00
3625388d8c
samd/samd_isr: Change the way a Sercom ISR is registered and called.
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Code size diff: +12 Bytes
BSS diff: -12 Bytes
RAM usage: +16 Bytes
Speed increase: a few clock cycles per call
Style improvement: ++
2022-10-06 22:52:10 +11:00
aa870708ac
samd/machine_spi: Add the machine.SPI class.
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Suported by both SAMD21 and SAMD51. It follows the generic API, except for
the bits=nn option, which is not implemented (yet).
2022-10-06 22:48:44 +11:00
robert-hh