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Merge pull request #1750 from shauew/patch-2 

Update portserial_m.c
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Bernard Xiong 2018-08-30 12:58:56 +08:00 committed by GitHub
parent eada5059da 4fb344e759
commit 830975f66d
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1 changed files with 4 additions and 0 deletions
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components/net/freemodbus/port/portserial_m.c
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@ -130,12 +130,16 @@ void vMBMasterPortSerialEnable(BOOL xRxEnable, BOOL xTxEnable)
/* enable RX interrupt */
serial->ops->control(serial, RT_DEVICE_CTRL_SET_INT, (void *)RT_DEVICE_FLAG_INT_RX);
/* switch 485 to receive mode */
#if defined(RT_MODBUS_MASTER_USE_CONTROL_PIN)
rt_pin_write(MODBUS_MASTER_RT_CONTROL_PIN_INDEX, PIN_LOW);
#endif
}
else
{
/* switch 485 to transmit mode */
#if defined(RT_MODBUS_MASTER_USE_CONTROL_PIN)
rt_pin_write(MODBUS_MASTER_RT_CONTROL_PIN_INDEX, PIN_HIGH);
#endif
/* disable RX interrupt */
serial->ops->control(serial, RT_DEVICE_CTRL_CLR_INT, (void *)RT_DEVICE_FLAG_INT_RX);
}