SERCOM async/DMA with SAME5x support - #395

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crabel99 wants to merge 90 commits into

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crabel99:sercom-async-dma-merge-same5x

Commits on Jun 20, 2026

Normalize variant SERCOM peripheral and IRQ handler macros
crabel99
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54309a5
Refactor UART variants to use shared core serial emitters
crabel99
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230b3ed
Add shared PendSV deferred service dispatcher
crabel99
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d8e1197

Commits on Jun 21, 2026

define sercom transaction structure for enqueueing async transactions.
crabel99
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b04854c
provide unified structure for maintaining and accessing sercom protocol configuration
crabel99
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60af7ce
add support for mux pin deconfliction during development.
crabel99
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042458f
integrate needed dma sercom structure into the SERCOM class
crabel99
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755e70a
refactored initMaster/SlaveWIRE() to support rapid swapping of roles in a multi-master configuration
crabel99
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b6768fa
generalize RingBuffer to support any type not just uint8_t while preserving legacy behavior.
crabel99
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d16a831
refactored stopTransmissionWIRE to support DMA and async operations, added stopTransmissionWIRE to allow sync closeout, handle errors and continue processing the transaction queue
crabel99
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57c89a0
add 10-bit address support for client operations
crabel99
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8d1b6b5
finish implementing wire async and dma callback structure and inlining ISR called APIs
crabel99
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c9d1336
add async and automatic dma support for client mode operations.
crabel99
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a789b2e
refactor SPI to use SERCOM dma implementation
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0e91a3f
stage more UART DMA structure
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37bca6e
unify structure between different sercoms to mirror each other more consistently
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639e539
get sercom's wire protocol working in master mode
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fedf6db
clean up SPI
crabel99
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f1ffbcc
finish refactor of Wire to fully use async SERCOM
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d186cab
master wire fully tested sync/async
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b81a58a
test SPI sync and async operations
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8decc12
high level testing no hardware testing done on UART
crabel99
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cc3657a
refactor to use async sercom api's
crabel99
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fdd11fd
samd datasheet multiplexing tables as csv
crabel99
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7ce665e
script to generate wire sercom specific pin assignments can be used for pin assignment validation
crabel99
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3228488
Fix CI build errors
crabel99
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cb94be4
Make SPI interrupt handlers weak and fix example ambiguity
crabel99
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c543bb2
add getters for sercom class object
crabel99
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b841afb
add support to allow transaction chaining for uart/spi/i2c
crabel99
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edac060
finish support for chaining transactions and formatting cleanup
crabel99
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e97d102
allow readDataWIRE() to allow passing deferStopWIRE() on the final read.
crabel99
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29728a6
Revert "allow readDataWIRE() to allow passing deferStopWIRE() on the final read."
crabel99
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0d615d8
Reapply "allow readDataWIRE() to allow passing deferStopWIRE() on the final read."
crabel99
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b84405f
generate SPI and Wire pin mux arrays
crabel99
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6b5dd11
document sercom_txn.h purpose more clearly
crabel99
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260da0b
warn user if SPI or Wire pins are not properly assigned with a boolean begin() return
crabel99
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dec082e
fix UART test regression
crabel99
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fff3c38
fix(spi): derive IRQ handlers from PERIPH_SPIx and add SPI6/SPI7 support
crabel99
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5beb170
Preserve Wire sync compatibility while tightening async transaction handling.
crabel99
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eff0511
Normalize async branch whitespace
crabel99
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ef295ff
Route SERCOM deferred services through shared PendSV
crabel99
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f4dc420

Commits on Jun 24, 2026

Add PendSV peripheral channel map
crabel99
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8cfeeaf

Commits on Jun 26, 2026

Add PHY PendSV channel allocation
crabel99
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1a13c8f

Commits on Jul 4, 2026

Add RTC PendSV channel allocation
crabel99
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12eeb02

Commits on Jul 16, 2026

fix(wire): restore multimaster role transitions
crabel99
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e9e81f7

Commits on Jul 17, 2026

Commits on Jul 18, 2026

Commits on Jul 19, 2026

Commits on Jul 24, 2026

fix(core): use CMSIS SAME5x family headers
crabel99
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73e669d
fix(core): complete SAME5x pin and interrupt guards
crabel99
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409cdd0
fix(core): complete SAME5x startup vectors
crabel99
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e371884
fix(core): complete SAME5x timing and reset guards
crabel99
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2b6458a
fix(usb): complete SAME5x device and host guards
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dd62604
fix(uart): complete SAME5x family guards
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aef45aa
fix(spi): complete SAME5x family guards
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2fc453a
refactor(pendsv): map services across SAME5x peripherals
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dc59abb
feat(wire): add deferred multimaster slave DMA
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9f1d78f
fix(wire): service final slave NACK after DMA
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068321c
build(core): update SAME5x USB and DMA dependencies
crabel99
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1581f36
Merge branch 'pendsv-support-clean' into sercom-async-dma-merge-same5x
crabel99
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12bbc72
fix(sercom): generate pinmux guards from chip families
crabel99
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5299f12
build(sercom): update USB and DMA dependencies
crabel99
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0d3d40c

Commits on Jul 26, 2026

fix(wire): recover DMA stop and slave role transitions
crabel99
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7daaf0c

Commits on Jul 27, 2026

Commits on Aug 11, 2026

feat(wire): harden async DMA multimaster transactions
crabel99
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4cf798b

Commits on Aug 21, 2026

fix(wire): start queued master after slave retirement
crabel99
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9d655dd
refactor(wire): reuse ISR status snapshot
crabel99
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d7523f3

Commits on Aug 22, 2026

Commits on Sep 27, 2026

fix(spi): cancel queued transfers before releasing buffers
crabel99
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76492a7

Commits on Oct 1, 2026

feat(dmac): add shared hardware CRC channel support
crabel99
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a9e6e44

Commits on Oct 5, 2026