Start cannot be generated after a misplaced Stop
Description
If a master generates a misplaced Stop on the bus (bus error), the peripheral cannot
generate a Start anymore.
Workaround
In the I²C standard, it is allowed to send a Stop only at the end of the full byte (8 bits +
acknowledge), so this scenario is not allowed. Other derived protocols like CBUS allow it,
but they are not supported by the I²C peripheral.
A software workaround consists in asserting the software reset using the SWRST bit in the
I2C_CR1 control register.
是说只允许在发了8bits+ack后，才能发stop; 还是不允许？ 谢谢 |
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