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fix bug for RDA UNO_91H：calling us ticker functions without init. #9318

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merged 1 commit into from Jan 24, 2019
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fix bug for RDA UNO_91H：calling us ticker functions without init. #9318

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2 changes: 2 additions & 0 deletions targets/TARGET_RDA/TARGET_UNO_91H/trng_api.c
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Expand Up @@ -70,6 +70,8 @@ void trng_init(trng_t *obj)
regval = rTRNG_CTRL | ((0x01UL << 4) | (0xFFUL << 16));
rTRNG_CTRL = regval & ~((0x01UL << 1) | (0x01UL << 2) | (0x01UL << 3));

us_ticker_init();

/*Entropy data was mixed by TRNG seed and noise, so we add one 32us delay to
ensure all 32 bits of seed is entropy when init and
another delay to update noise data when get data.
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