REV 2_6
Change the default CT range to 1-100 Ampere.
11-20-2019

 REV 2_5
save setting of gyro chip's registers. and make UDP scan command response not a broadcast.
9-2-2017

 REV 2_4
Fixed a bug which unable to write gyro chip's 10th and 11th registers
8-15-2017

 REV 2_3
Fixed a watchdog bug.
8-1-2017

 REV 2_2
Slave modbus device ID could be set by modbus register 685
7-20-2017

 REV 2_1
Added function to connect outdoor light sensor.
7-12-2017

 REV1_7 
Master / Slave serial port done, register mapping done.
7-10-2017

 REV 1_6
write a character string ¡°TemcoT36CTA¡± to address 0x08008200, ISP tool use this to confirm it¡¯s a right firmware for the device.
7-5-2017

 REV 1_5
Fix a RF hang problem
6-29-2017


 REV 1_4
Airflow and accelerometer use different input port, rfm69 bitrate
6-29-2017

 REV 1_4
add the code for the led , change the output lib.
add the code to write the channel range.
6-28-2017

 REV 1_3
change the ENC28J60/enc28j60.c  and SPI/spi.c.
do not erase the serial number ip and baudrate .
6-23-2017

 REV 1_2
Fix a bug of deadmaster counter
6-20-2017

 REV 1_1
 Add RFM69 ack function and deadmaster.
6-16-2017

 REV 1
The code is based on T3 project on STM32F103.