To configure the SYSCLK on an F0 enable one of:
MICROPY_HW_CLK_USE_HSI48
MICROPY_HW_CLK_USE_HSE
MICROPY_HW_CLK_USE_BYPASS
To configure the SYSCLK on an F0 enable one of:
MICROPY_HW_CLK_USE_HSI48
MICROPY_HW_CLK_USE_HSE
MICROPY_HW_CLK_USE_BYPASS