GD32L233C-START Review-(Last) Radar Overall Demonstration
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Previously, the USART DMA plus IDLE interrupt indefinite length byte reception has been implemented , plus the LCD display module LM6059 driver . Now all the functions are combined.
For radar data processing, you can refer to my previous evaluation post for radar data analysis: [ TI Millimeter Wave Radar Evaluation] _6_AWR1843BOOST UART Output Data Analysis . USART receives data only as waveform data, but the actual radar module data is configurable and contains more information. The processing function is usart_comm_protocol() ,
In terms of LCD waveform display, only one screen of waveform data is displayed, and the drawing function is LCD_DrawEchoOriginal() :
The general process of the microcontroller is as follows:
It should be noted that LPTIME is also added here for PWM control of 4-20mA output. Here, LED and multimeter are directly connected for indication. Since it is only indoors, it is not obvious if it is directly related to the radar distance, so it changes a little bit every 1 second when a radar data packet is received. The LPTIME routine uses a 32K clock, the PWM output frequency is fixed to 1k , and then the high level time is changed to control the output voltage. The test video is as follows:
Here are the connections of the development board, which are quite messy:
Finally, a simple demonstration:
The attachment is the code, just put them into GD32L23x_Demo_Suites_V1.1.0\GD32L23x_Demo_Suites_V1.1.0\GD32L233R_EVAL_Demo_Suites\Projects\06_USART_DMA.
06_USART_DMA.zip
(37.18 KB, downloads: 2)
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