RTT+STM32+FreeModbus+Master
1.Port FreeModbus1.5 and RT-Thread1.1.1 to STM32F103.
2.Support 3 IDE : Eclipse ,Keil ,IAR.
3.Version control use git.
4.Modbus slave function support DiscreteInput,Coil,RegInput and RegHolding.
5.Modbus master function support DiscreteInput,Coil,RegInput and RegHolding.
Tips:The Modbus master function is asynchronization now .Synchronization mode will be supported in the near future.