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Type: Posts; User: manitou

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    I believe SdFat lib also calculates SD clock...

    I believe SdFat lib also calculates SD clock using prescale of 0 as needed.
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    I confirmed a few of the configurations provided...

    I confirmed a few of the configurations provided "faster" megabits/sec, but i don't have a way to actually measure the SD clock. As noted above, 0 bypasses the prescaler (e.g., prescaler =1)
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    Any chance you can tighten up some of the...

    Any chance you can tighten up some of the divisors in KinetisSDHC.c, i have a perl script that generates the following divisors

    F_CPU 240000000
    400000 (375000) div(64,10)
    25000000 ...
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    No rest for the weary. thanks Upon further...

    No rest for the weary. thanks

    Upon further review, I think you can improve SDHC clock values in some cases. So if F_CPU is 72mhz, one could get 24mhz SDHC clock SDCLKFS 0, and divisor 3. that...
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    I agree this is an error. if i run T3.6 @180mhz,...

    I agree this is an error. if i run T3.6 @180mhz, SDHC_SYSCTL is 0xE0318. 3 is illegal value for SDCLKFS. sector read time is 452 us. Manually setting to 0xE0138, then SDHC clock should be...
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