circuitpython/ports/stm/boards/swan_r5
Matthew McGowan e2c6cf5929 fix: Increases drive strength of 32kHz external crystal, in line with calculations specified in ST AN2867 sections 3.3, 3.4, and STM32L4 datasheet DS12023 Table 58. LSE oscillator characteristics.
The drive strength RCC_LSEDRIVE_LOW is marginal for the 32kHz crystal oscillator stability, and RCC_LSEDRIVE_MEDIUMLOW meets the calculated drive strength with a small margin for parasitic capacitance.
2023-02-28 14:34:10 -08:00
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tests run updated pre-commit 2023-02-01 13:38:41 +05:30
board.c Use MP_WEAK for default board.c routines 2022-09-08 07:36:50 -04:00
board.h exposes `DigitalInOutPin` instances on the board, initialized and reserved. 2022-06-20 14:46:58 -07:00
mpconfigboard.h fix: Increases drive strength of 32kHz external crystal, in line with calculations specified in ST AN2867 sections 3.3, 3.4, and STM32L4 datasheet DS12023 Table 58. LSE oscillator characteristics. 2023-02-28 14:34:10 -08:00
mpconfigboard.mk formatting(swan_r5): lexicographically sorted the board module names in the swan_r5 makefile include [ci-skip][skip-ci]. Skip CI since this is a cosmetic change only. 2022-11-08 12:04:30 -08:00
pins.c Implements PDMIn for STM32L4 using the SAI peripheral and decimation/filtering in software. 2022-11-04 17:27:08 -07:00