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mirror of https://github.com/RIOT-OS/RIOT.git synced 2025-12-17 02:23:49 +01:00
Marian Buschsieweke 3002f1efa3
cpu/stm32: fix periph_i2c for F1, F2, L1 and F4 families
- boot the I2C after init in low power mode
    - otherwise I2C will consume more power until the first time it is
      used, which is surprising
- STM32 F1 only: reconfigure SCL and SDA as GPIOs while the I2C
  peripheral is powered down
    - When the I2C peripheral is not clocked, it drives SCL and SDA
      down. This will dissipate power across the pull up resistor.
2023-12-12 09:55:47 +01:00
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