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3 Commits

Author SHA1 Message Date
robert-hh d9338aabc5 samd: Change the symbol names for the peripheral clocks. 
From APB_FREQ to DFLL48M_FREQ, and from apb_freq to peripheral_freq.
 2022-10-06 23:10:08 +11:00
robert-hh 3625388d8c samd/samd_isr: Change the way a Sercom ISR is registered and called. 
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
robert-hh aa870708ac samd/machine_spi: Add the machine.SPI class. 
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