diff options
| author | Bernard Xiong <[email protected]> | 2018-08-30 12:58:56 +0800 |
|---|---|---|
| committer | GitHub <[email protected]> | 2018-08-30 12:58:56 +0800 |
| commit | 830975f66da16c85ab09bcb0695a76c659ebcae9 (patch) | |
| tree | 1a638ff8b7e62fc0f8bff170b8fb8065a63a8fa9 | |
| parent | eada5059da7e869aec4556d312cc9f7ef769a8ac (diff) | |
| parent | 4fb344e759be728522082f4e48df28db91642cf7 (diff) | |
Merge pull request #1750 from shauew/patch-2
Update portserial_m.c
| -rw-r--r-- | components/net/freemodbus/port/portserial_m.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/components/net/freemodbus/port/portserial_m.c b/components/net/freemodbus/port/portserial_m.c index eb50cf51d3..f68794a617 100644 --- a/components/net/freemodbus/port/portserial_m.c +++ b/components/net/freemodbus/port/portserial_m.c @@ -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); } |