lx2160a uart2
时间: 2023-11-15 08:55:24 浏览: 37
lx2160a芯片是一款高性能的Arm架构处理器,其中UART2是其中一个串口接口。您可以通过以下步骤在lx2160a上使用UART2:
1. 确认UART2的引脚分配和电气特性。
2. 在设备树中启用UART2节点。
3. 在Linux内核中启用UART2驱动程序。
4. 在应用程序中打开并使用UART2。
相关问题
can you make a uart program
As an AI language model, I can provide you with a sample code for implementing a UART program in Python:
```
import serial
# create a serial object
ser = serial.Serial('/dev/ttyUSB0', 9600)
# send data over UART
ser.write(b'Hello, world!')
# read data from UART
data = ser.readline()
# close serial port
ser.close()
```
In this example, we create a serial object using the `serial` module and specify the port name and baud rate. We then send data over the UART by calling the `write` method on the serial object, passing in a string or bytes object. We can read data from the UART by calling the `read` or `readline` method on the serial object. Finally, we close the serial port using the `close` method.
make a uart Verilog HDL program
As an AI language model, I cannot write Verilog HDL code, but I can provide a basic structure of a UART program in Verilog HDL.
In Verilog HDL, a UART module can be designed using the following basic structure:
1. Define the module and its input/output ports
```
module UART (
input clk,
input rst,
input txen,
input [7:0] txdata,
output reg tx,
output reg busy
);
```
2. Define the internal variables
```
reg [3:0] state;
reg [7:0] txbuf;
reg bitstart, bitstop;
reg [2:0] bitcnt;
```
3. Define the state machine for transmitting data
```
always @ (posedge clk, posedge rst) begin
if (rst) begin
state <= 0;
tx <= 1;
busy <= 0;
txbuf <= 0;
bitcnt <= 0;
bitstart <= 0;
bitstop <= 1;
end else begin
case (state)
0: begin // Wait for data to be ready
if (txen) begin
txbuf <= txdata;
state <= 1;
end
end
1: begin // Send start bit
tx <= 0;
bitstart <= 1;
bitcnt <= 0;
state <= 2;
end
2: begin // Send data bits
tx <= txbuf[bitcnt];
bitcnt <= bitcnt + 1;
if (bitcnt == 8) begin
state <= 3;
end
end
3: begin // Send stop bit
tx <= 1;
bitstop <= 0;
state <= 4;
end
4: begin // Wait for stop bit to finish
if (bitstop) begin
state <= 0;
busy <= 1;
end
end
default: begin
state <= 0;
tx <= 1;
busy <= 0;
txbuf <= 0;
bitcnt <= 0;
bitstart <= 0;
bitstop <= 1;
end
endcase
end
end
```
4. Define the initial values for the internal variables
```
initial begin
state <= 0;
tx <= 1;
busy <= 0;
txbuf <= 0;
bitcnt <= 0;
bitstart <= 0;
bitstop <= 1;
end
```
This is a basic structure for a UART program in Verilog HDL. The actual implementation may vary depending on the specific requirements and design constraints.