I’m testing the latest sd_card_hw. It works fine.
SCK was 400kHz during initialization and 8MHz during data transfer. Unfortunately, it doesn’t work at 24MHz. Is it supposed to operate at 24MHz?
EDIT:
The latest sd_card for PlatformIO at the link below worked as usual with the serial monitor via USB. However, the SCK was 8MHz.
‘GitHub - Seeed-Studio/platform-seeedboards: Seeed Boards: development platform for PlatformIO’
According to the datasheet, I understand that for the SPIM20, the maximum SCK frequency is 8MHz.
For the SPIM00, I also found that SCK can only be divided down to 1 MHz.