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As I said, My target board is CPU SH7709S,Peripheral clock = 29491200Hz. I setted CYGHWR_HAL_SH_TMU_PRESCALE_0 = 4 so TMU0's 1tick perid is.. 29491200/4=7372800Hz,1/7372800=0.000000135sec=0.135microsec. On the assumption that HAL_CLOCK_READ operating correctly, according to result cyg_thread_delay(1) took only 9409 x 0.135 = 1270.215 microsec. I cannot understand why it finish so short perid. I re-post untitled.ecc.gz. Please teach me why I get such result. Masahiro Ariga
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untitled.ecc.gz
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