与上位机通信
在天问中编程,通过分支判断来接收 PyQt 的传递的信号,进而控制单片机的点灯操作。
环境说明
该内容仅针对我自己学习的开发板做的笔记,在实际开发中需要针对目标电路板的原理图进行针对性研究。
- 芯片:STC8H8K64U
- 烧录软件:stc-isp-v6.92G
- 编码工具:天问
引脚说明
P0_0
:蜂鸣器,按频率发音,1
:高,0
:低P0_1
:电动马达,0
:停,1
:动P5_3
:小蓝灯,0
:灭,1
:亮P2_7
:1 号 LED 灯,0
:亮,1
:灭P2_6
:2 号 LED 灯,0
:亮,1
:灭P1_5
:3 号 LED 灯,0
:亮,1
:灭P1_4
:4 号 LED 灯,0
:亮,1
:灭P2_3
:5 号 LED 灯,0
:亮,1
:灭P2_2
:6 号 LED 灯,0
:亮,1
:灭P2_1
:7 号 LED 灯,0
:亮,1
:灭P2_0
:8 号 LED 灯,0
:亮,1
:灭P5_1
:1 号按键,0
:按下,1
:弹起P5_2
:2 号按键,0
:按下,1
:弹起P5_3
:3 号按键,0
:按下,1
:弹起P5_4
:4 号按键,0
:按下,1
:弹起P3_4
:矩阵键盘第 1 行引脚P3_5
:矩阵键盘第 2 行引脚P4_0
:矩阵键盘第 3 行引脚P4_1
:矩阵键盘第 4 行引脚P0_3
:矩阵键盘第 1 列引脚P0_6
:矩阵键盘第 2 列引脚P0_7
:矩阵键盘第 3 列引脚P1_7
:矩阵键盘第 4 列引脚
天问代码
#include <STC8HX.h>
uint32 sys_clk = 24000000;//设置PWM、定时器、串口、EEPROM频率参数
#include "lib/twen_board.h"
#include "lib/UART.h"
#include "lib/wmath.h"
#include <stdio.h>
#define SIZE 8
int8 incr = 1;
uint8 rec = 0;
uint8 index = 0;
uint8 isLoop = 0;
uint32 INTERVAL = 800;
void putchar(char c) {
if (c == '\n') {
uart_putchar(UART_1, 0x0d);
uart_putchar(UART_1, 0x0a);
} else {
uart_putchar(UART_1, (uint8)c);
}
}
void switchOffAll() {
// 1:P2_7
// 2:P2_6
// 3:P1_5
// 4:P1_4
// 5:P2_3
// 6:P2_2
// 7:P2_1
// 8:P2_0
P2_7 = 1, P2_6 = 1, P1_5 = 1, P1_4 = 1;
P2_3 = 1, P2_2 = 1, P2_1 = 1, P2_0 = 1;
}
void setup() {
twen_board_init();//天问51初始化
uart_init(UART_1, UART1_RX_P30, UART1_TX_P31, 115200, TIM_1);//初始化串口
P1M1=0x00;P1M0=0xff;//推挽输出
P2M1=0x00;P2M0=0xff;//推挽输出
randomSeed(1);
switchOffAll();
}
// 需求6:
//
// 随机点亮1, 2, 3, 4, 5, 6, 7, 8任意一个LED灯
void randomSwitchOn6() {
index = random(0, 7 + 1); // 生成[0, 7] 内的整数
printf_small("index = :%d", index);
switch(index) {
case 0: P2_7 = 0; break; case 1: P2_6 = 0; break;
case 2: P1_5 = 0; break; case 3: P1_4 = 0; break;
case 4: P2_3 = 0; break; case 5: P2_2 = 0; break;
case 6: P2_1 = 0; break; case 7: P2_0 = 0; break;
}
delay(INTERVAL);
switchOffAll();
delay(INTERVAL);
}
// 需求7:
//
// 随机点亮1, 3, 5, 7任意一个LED灯
void randomSwitchOn7() {
// 0 1 2 3
// 1 3 5 7
index = random(0, 3 + 1);// 生成[0, 3] 内的整数
printf_small("index = :%d", index);
switch(index) {
case 0: P2_7 = 0; break; case 1: P1_5 = 0; break;
case 2: P2_3 = 0; break; case 3: P2_1 = 0; break;
}
delay(INTERVAL);
switchOffAll();
delay(INTERVAL);
}
// 需求8:
//
// 如果串口接收到0x1: 1, 2, 3, 4, 5, 6, 7, 8 走马灯亮
// 则调用 marquee(0, 1, 0);
// 如果串口接收到0x2: 8, 7, 6, 5, 4, 3, 2, 1 走马灯亮
// 则调用 marquee(7, -1, 0);
// 如果串口接收到0x3:1, 3, 5, 7 号灯依次流水点亮
// 则调用 marquee(0, 2, 1);
// 如果串口接收到0x4:8, 6, 4, 2 号灯依次流水点亮
// 则调用 marquee(7, -2, 1);
void marquee8(uint8 start, int incr, uint8 isFlowing) {
switchOffAll();
delay(INTERVAL);
index = start;
while(index < SIZE && index > -1) {
if(isFlowing == 0) {
switchOffAll();
}
switch(index) {
case 0: P2_7 = 0; break; case 1: P2_6 = 0; break;
case 2: P1_5 = 0; break; case 3: P1_4 = 0; break;
case 4: P2_3 = 0; break; case 5: P2_2 = 0; break;
case 6: P2_1 = 0; break; case 7: P2_0 = 0; break;
}
index += incr;
delay(INTERVAL);
}
if(isFlowing == 0) {
switchOffAll();
}
}
// 需求9:
//
// 如果串口接收到0x1: 1, 2, 3, 4, 5, 6, 7, 8 走马灯亮
// 则调用 marquee(0, 1, 0);
// 如果串口接收到0x2: 8, 7, 6, 5, 4, 3, 2, 1 走马灯亮
// 则调用 marquee(7, -1, 0);
// 如果串口接收到0x3:1, 3, 5, 7 号灯依次流水点亮
// 则调用 marquee(0, 2, 1);
// 如果串口接收到0x4:8, 6, 4, 2 号灯依次流水点亮
// 则调用 marquee(7, -2, 1);
void marquee9(uint8 start, int incr, uint8 isFlowing) {
switchOffAll();
delay(INTERVAL);
index = start;
while(index < SIZE && index > -1) {
if(isFlowing == 0) {
switchOffAll();
}
switch(index) {
case 0: P2_7 = 0; break; case 1: P2_6 = 0; break;
case 2: P1_5 = 0; break; case 3: P1_4 = 0; break;
case 4: P2_3 = 0; break; case 5: P2_2 = 0; break;
case 6: P2_1 = 0; break; case 7: P2_0 = 0; break;
}
index += incr;
delay(INTERVAL);
}
switchOffAll();
}
// 自定义相遇灯
void meetYou() {
int i = 0;
while(i < 30) {
switchOffAll();
switch(index) {
case 0: P2_7 = 0; P2_0 = 0; break;
case 1: P2_6 = 0; P2_1 = 0; break;
case 2: P1_5 = 0; P2_2 = 0; break;
case 3: P1_4 = 0; P2_3 = 0; break;
}
if(index > 2) {
incr = -1;
} else if(index < 1) {
incr = 1;
}
index += incr;
delay(INTERVAL);
if(isLoop) {
// 如果需要死循环,则手动置零,默认跑 30 次
i = 0;
}
i++;
}
switchOffAll();
}
void loop() {
if(UART1_GET_RX_FLAG) {
UART1_CLEAR_RX_FLAG;
rec = SBUF;
// uart_putchar(UART_1, rec);//串口单个字符输出
// uart_putstr(UART_1, rec);//字符串输出
// printf_small("rec = :%d", rec);
if(rec == 0x00) {
// 0x00 专用于用于测试通路
uart_putstr(UART_1, "OK");
}
// ==自定义相遇灯=================================
else if(rec == 0x01) {
uart_putstr(UART_1, "meet you");
meetYou();
}
// ==需求9的分支=================================
else if(rec == 0x5B) {
uart_putstr(UART_1, "需求9的0x1");
marquee9(0, 1, 1);
} else if (rec == 0x5C) {
uart_putstr(UART_1, "需求9的0x2");
marquee9(1, 1, 1);
} else if (rec == 0x5D) {
uart_putstr(UART_1, "需求9的0x3");
marquee9(2, 1, 1);
} else if (rec == 0x5E) {
uart_putstr(UART_1, "需求9的0x4");
marquee9(3, 1, 1);
} else if (rec == 0x5F) {
uart_putstr(UART_1, "需求9的0x5");
marquee9(4, 1, 1);
} else if (rec == 0x60) {
uart_putstr(UART_1, "需求9的0x6");
marquee9(5, 1, 1);
} else if (rec == 0x61) {
uart_putstr(UART_1, "需求9的0x7");
marquee9(6, 1, 1);
} else if (rec == 0x62) {
uart_putstr(UART_1, "需求9的0x8");
marquee9(7, 1, 1);
}
// ==需求8的分支=================================
else if (rec == 0x51) {
uart_putstr(UART_1, "需求8的0x1");
marquee8(0, 1, 0);
} else if (rec == 0x52) {
uart_putstr(UART_1, "需求8的0x2");
marquee8(7, -1, 0);
} else if (rec == 0x53) {
uart_putstr(UART_1, "需求8的0x3");
marquee8(0, 2, 1);
} else if (rec == 0x54) {
uart_putstr(UART_1, "需求8的0x4");
marquee8(7, -2, 1);
// ==需求7的分支=================================
} else if (rec == 0x46) {
uart_putstr(UART_1, "需求7");
randomSwitchOn7();
// ==需求6的分支=================================
} else if (rec == 0x3C) {
uart_putstr(UART_1, "需求6");
randomSwitchOn6();
} else {
uart_putstr(UART_1, "unknown command!");
}
}
}
void main(void) {
setup();
while(1){
loop();
}
}
上位机代码
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton
import sys
import serial
from serial.tools import list_ports
BUTTONS = [
("需求9的0x1", lambda : send(91)), ("需求9的0x2", lambda : send(92)),
("需求9的0x3", lambda : send(93)), ("需求9的0x4", lambda : send(94)),
("需求9的0x5", lambda : send(95)), ("需求9的0x6", lambda : send(96)),
("需求9的0x7", lambda : send(97)), ("需求9的0x8", lambda : send(98)),
("需求8的0x1", lambda : send(81)), ("需求8的0x2", lambda : send(82)),
("需求8的0x3", lambda : send(83)), ("需求8的0x4", lambda : send(84)),
("需求7", lambda : send(70)), ("需求6", lambda : send(60)),
("我的相遇灯", lambda : send(1))
]
"""
发送 int 数据到串口
num 的取值如下所示:
0x5B:需求9的0x1
0x5C:需求9的0x2
0x5D:需求9的0x3
0x5E:需求9的0x4
0x5F:需求9的0x5
0x60:需求9的0x6
0x61:需求9的0x7
0x62:需求9的0x8
0x51:需求8的0x1
0x52:需求8的0x2
0x53:需求8的0x3
0x54:需求8的0x4
0x46:需求7
0x3C:需求6
0x01:我的相遇灯
"""
def send(num:int = 0):
ports = [(p.device, p.description) for p in list_ports.comports()]
port = [x[0] for x in ports if 'USB-SERIAL' in x[1]]
port = port[0] if len(port) else None
if not port:
print("找不到 USB 串口")
exit()
ser = serial.Serial(port=port, baudrate=115200, timeout=1200)
if not ser or not ser.is_open:
print("Serial port is not open.")
ser.write(num.to_bytes(length=8, byteorder='little', signed=False))
ser.flush()
info = ser.read(2)
ser.close()
if(info):
print(info)
# 1.创建应用程序
app = QApplication(sys.argv)
# 2.创建窗口
w = QWidget()
y = 0
# 修改窗口标题
w.setWindowTitle('串口信号发送客户端')
for bs in BUTTONS:
btn = QPushButton()
btn.move(0, y)
btn.setText(bs[0])
btn.clicked.connect(bs[1])
btn.setParent(w)
y += 30
# 3.显示窗口
w.show()
sys.exit(app.exec())