kopia lustrzana https://github.com/micropython/micropython
stm32/sdcard: Don't use SD clock bypass on F7 MCUs.
With clock bypass enabled the attached SD card is clocked at the maximum 48MHz. But some SD cards are unreliable at these rates. Although it's nice to have high speed transfers it's more important that the transfers are reliable for all cards. So disable this clock bypass option.pull/4646/head
rodzic
e5509a910f
commit
86f06d6a87
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@ -222,10 +222,6 @@ bool sdcard_power_on(void) {
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}
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// configure the SD bus width for wide operation
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#if defined(STM32F7)
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// use maximum SDMMC clock speed on F7 MCUs
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sd_handle.Init.ClockBypass = SDMMC_CLOCK_BYPASS_ENABLE;
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#endif
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if (HAL_SD_ConfigWideBusOperation(&sd_handle, SDIO_BUS_WIDE_4B) != HAL_OK) {
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HAL_SD_DeInit(&sd_handle);
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goto error;
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