Pingtou Ge RRVB2601 Review: Unboxing, Hardware Analysis and Environment Setup
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This post was last edited by xiyue521 on 2021-7-19 01:45
The development board just arrived today, and I can’t wait to unbox it:
The development board is protected by an acrylic board. There is an OLED screen on the front and the main chip in the middle. There is a speaker and two chips on the back, which are a USB to serial port and a JTAG debugging chip. The black board is tall and elegant, and it also comes with two micro data cables. It is small and exquisite, simple and elegant. Great! Great! Great!
1. Unboxing and Schematic Diagram
RVB2601 is a development board based on the Pingtou Ge eco chip CH2601, with onboard JTAG debugger, WiFi&BLE chip W800, audio ADCES7210, audio DACES8156, 128x64 OLED screen, RGB three-color indicator light, user buttons, and Arduino-compatible expansion interface. CH2601 is a RISC-V eco chip based on Xuantie E906, with a maximum main frequency of 220MHz, supporting AliOS Things IoT operating system, Pingtou Ge YoC software platform and Pingtou Ge Jianchi development tool (CDK).
The Arduino interface of the development board connects the peripheral chip and the microcontroller pins, and the VCC and GND pins are overflowed for user convenience.
Functional block diagram of the development board:
The upper left corner is the power supply part: 5V to 3.3V—system and peripheral circuit power supply; 5V to 13V—screen power supply; 5V to 1.2V—CH2601 core power supply (actually using the CH2601 internal LDO power supply).
The lower left is the OLED screen: communication is achieved through SPI1. The resolution is 129*64. The only drawback is that it has no touch screen, otherwise it can be combined with LVGL GUI to achieve user interaction.
The WIFI W800 chip is above, which is connected to the main chip through SPI0. It can also be connected to cp2102 and STM32 JTAG debugger through uart and jtag for debugging and programming.
On the right is the audio part. The two audio ADC\DAC chips share configuration parameters through I2C and transmit data through I2S1 and 4.
Note that there is a PA pin that can mute the speaker, and a low level means muting.
Below is the debugging and programming interface of the main chip, debugging and programming through JTAG, printing data through the serial port, and the RC reset circuit.
JTAG uses the STM32103 chip:
The rest is GPIO connection LED and button:
Two user buttons and a three-primary-color LED:
2. Power on:
At the same time, the serial port prints LOG:
We can view the help through hllp:
It also supports custom instructions, which can easily debug and view memory values, restart the system, etc.:
3. Environment Construction:
CDK is a cross-platform integrated development environment based on wxWidgets graphics library, and its full name is (C-SKY development kit). CDK has a built-in project management unit and integrates CSKY binary development tools, providing users with a graphical embedded development environment and reducing the learning curve of embedded development.
After downloading, click setup to install:
It takes about 5 minutes to install. Open CDK
Select New Project->Select HelloWorld. After importing and downloading, click F7 to compile, and then download to the development board:
This process uses the AliOS RTOS. In the main function, board_yoc_init is initialized, then the version number is printed, the OLED is initialized, helloworld is printed in the while loop, and then it is suspended for 1000ms and repeated.
The above is the content of unpacking and environment construction.
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