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modbus: Increase modbus reply timeout to 500ms. 

Needed by rdtech-dps driver, 100ms is too short.
This commit is contained in:
James Churchill 2018-02-18 16:29:01 +10:00
parent 366ccb8ab7
commit d4e0701771
1 changed files with 1 additions and 1 deletions
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2
src/modbus/modbus_serial_rtu.c
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@ -133,7 +133,7 @@ static int modbus_serial_rtu_read_begin(void *priv, uint8_t *function_code)
uint8_t slave_addr;
int ret;
ret = serial_read_blocking(modbus->serial, &slave_addr, 1, 100);
ret = serial_read_blocking(modbus->serial, &slave_addr, 1, 500);
if (ret != 1 || slave_addr != modbus->slave_addr)
return ret;