feat(machine/stm32): make HSE crystal frequency selectable.

mirror of https://github.com/tinygo-org/tinygo.git synced 2026-08-20 12:29:03 +00:00

Define the board's external crystal (HSE) frequency `xtalHz` in the
respective `board_*.go` files. Per-topology PLL tables (F1, F4, F7)
will compute the register dividers from it.

Moving this parameter to the board definition level cleanly isolates
board hardware characteristics from general MCU chip configurations,
eliminating the need for custom target build tags. Targets using
HSE-clocked STM32 chips must define `xtalHz` or fail to build.

This commit is contained in:

Konstantin Sharlaimov

2026-07-12 16:30:16 +02:00

committed by

Ron Evans

parent b8adb803c4

commit 5f02d6b659

22 changed files with 193 additions and 79 deletions

									
										src/machine/board_feather-stm32f405.go
									
		+2
		
												View File
												
				@@ -7,6 +7,8 @@ import (

					"runtime/interrupt"

				)

				const xtalHz = 12_000_000

				const (

					NUM_DIGITAL_IO_PINS = 39

					NUM_ANALOG_IO_PINS  = 7