8000 try disabling sub 1 clock cycle clock stretching for 100khz, this may… · sparkfun/mbed-os-ambiq-apollo3@90230bb · GitHub
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try disabling sub 1 clock cycle clock stretching for 100khz, this may help with problems with nak being seen as acks when clock stretching present
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  • targets/TARGET_Ambiq_Micro/TARGET_Apollo3/sdk/mcu/apollo3/hal

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‎targets/TARGET_Ambiq_Micro/TARGET_Apollo3/sdk/mcu/apollo3/hal/am_hal_iom.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -2199,7 +2199,7 @@ am_hal_iom_configure(void *pHandle, am_hal_iom_config_t *psConfig)
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_VAL2FLD(IOM0_CLKCFG_DIV3, IOM0_CLKCFG_DIV3_DIS) |
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_VAL2FLD(IOM0_CLKCFG_FSEL, IOM0_CLKCFG_FSEL_HFRC_DIV2) |
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_VAL2FLD(IOM0_CLKCFG_IOCLKEN, 1);
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IOMn(ui32Module)->MI2CCFG = _VAL2FLD(IOM0_MI2CCFG_STRDIS, 0) |
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IOMn(ui32Module)->MI2CCFG = _VAL2FLD(IOM0_MI2CCFG_STRDIS, 1) |
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_VAL2FLD(IOM0_MI2CCFG_SMPCNT, 3) |
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_VAL2FLD(IOM0_MI2CCFG_SDAENDLY, 15) |
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_VAL2FLD(IOM0_MI2CCFG_SCLENDLY, 0) |

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