AD9912 Core Board + STM32 Main Control Board 1GSPS 400MHz Sine Wave Output DDC Synthesis with 1.3-inch TFT Screen

AD9912 Core Board + STM32 Main Control Board 1GSPS 400MHz Sine Wave Output DDC Synthesis with 1.3-inch TFT Screen

Using Instruction:
- https://pan.baidu.com/s/1pQorRepk7iejOK0vKPn6Ug
- Password: 5aro

Specification:
- Power supply voltage: +5V/400mA
- Output frequency: 1Hz - 400MHz
- Supports point frequency and sweep frequency modes, with a minimum step of 1Hz for sweep frequency parameters and a minimum time interval of 1mS
- Output amplitude control words 0-1023 correspond to an output amplitude of 280mVPP - 1.1VPP (under 50 ohm impedance)
- Hardware support for external clock input, CMOS output and high-speed differential port output
- Provide reference code and PDF format schematic diagram for secondary development

Serial Communication Protocol:
- The overall structure of the protocol adopts the command line mode, and the communication baud rate is 115200bps. The machine parses and executes, then returns the result. The command is limited to lowercase letters a ~ z, numbers 0 ~ 9. The end symbol of each command is the "#" character (hexadecimal notation "0x23"). The total length of the command is up to 15 characters (including "#").

W Command (write data to the main control board):
1. w1 command: set the frequency value 1 (starting frequency or point frequency). The format is: w1xxxxxxxxx#, a total of 11 bytes. “xxxxxxxxx” is the frequency value represented by 9 digits. For example, w11000000000# indicates that the set frequency is 1000000000KHz (100MHz).

2. w2 command: set the frequency value 2 (terminating frequency). The format is: w1xxxxxxxxx#, a total of 11 bytes. "xxxxxxxxx" is the frequency value represented by 9 digits. For example, w11000000000# indicates that the set frequency is 1000000000KHz (100MHz).

3. w3 command: set the frequency value 3 (span). The format is: w1xxxxxxxxx#, a total of 11 bytes. “xxxxxxxxx” is the frequency value represented by 9 digits. For example, w11000000000# indicates that the set frequency is 1000000000KHz (100MHz).

4. wt command: Set the frequency value 1 (step value). The format is: wtxxxx#, a total of 11 bytes. "xxxx" is 4 digits representing the time value in mS. For example, wt0001# indicates that the set frequency is 1mS.

5.wv command: set the frequency value 1 (amplitude value). The format is: wvxxxx#, a total of 11 bytes. "xxxx" is 4 digits representing the amplitude control word, no dimension, only reflecting the DAC output current value of the DDS. For example, wv0001# means that the output current of the AD9912 is set to be relatively small, about 280mVpp. Wv1023# indicates that the output current of the AD9912 is set to be relatively large, about 1100mVpp.

Host sends data to PC (response value):
- Return "OK$" after receiving the correct data.

Package Included:
- 1 x AD9912 Core Board + STM32 Main Control Board