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arch/arm/src/stm32f7/stm32_i2c.c: Round up stm32_i2c_toticks return value

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When sending small number of bytes with larger CONFIG_USEC_PER_TICK
this function should return at least 1. Solve this by rounding
up the result.

Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
This commit is contained in:
Jukka Laitinen 2023-01-27 17:42:44 +04:00 committed by Alan Carvalho de Assis
parent d96189ce26
commit 7d54d04613
1 changed files with 4 additions and 3 deletions
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arch/arm/src/stm32f7/stm32_i2c.c
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@ -784,11 +784,12 @@ static uint32_t stm32_i2c_toticks(int msgc, struct i2c_msg_s *msgs)
bytecount += msgs[i].length; bytecount += msgs[i].length;
} }
/* Then return a number of microseconds based on a user provided scaling /* Then return a number of ticks based on a user provided scaling
* factor. * factor, rounded up.
*/ */
return USEC2TICK(CONFIG_STM32F7_I2C_DYNTIMEO_USECPERBYTE * bytecount); return USEC2TICK(CONFIG_STM32F7_I2C_DYNTIMEO_USECPERBYTE * bytecount +
CONFIG_USEC_PER_TICK / 2 - 1);
} }
#endif #endif