120 lines
3.8 KiB
Markdown
120 lines
3.8 KiB
Markdown
# 编码实现 - 振动马达驱动与反馈 (Docs/60_coding/mod-motor.md)
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本文件对应振动马达异步时序控制的编码实现细节。
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## 1. 对应代码源文件
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* [App/main.c](file:///c:/workfile/105/stc32g12k128/App/main.c) (定义马达引脚控制及 1ms 中断中的异步脉冲状态机处理)
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## 2. 关键代码片段与逻辑实现
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### 2.1 引脚控制宏与初始化
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马达由引脚 `P2.5` 控制。配置模式为推挽输出：
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```c
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sbit MOTOR = P2^5;
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void Motor_Init(void) {
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// 将 P2.5 配置为推挽输出模式，默认输出低电平 0
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P2M1 &= ~(1 << 5);
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P2M0 |= (1 << 5);
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MOTOR = 0;
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}
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```
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### 2.2 异步定时脉冲时序控制 (Motor_Pulse_Process)
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为了避免采用阻塞式的 `Delay` 函数占用 CPU，我们在 1ms 定时中断中实现非阻塞状态机。
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定义全局控制变量：
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```c
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u16 motor_pattern_time = 0; // 阶段累计计数器
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u8 motor_phase = 0; // 振动阶段指示器
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u8 motor_total_pulses = 0; // 当前告警所需触发的总脉冲数
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u8 motor_pulse_count = 0; // 已振动次数
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u16 motor_on_ms = 0; // 单次振动持续时间
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u16 motor_off_ms = 0; // 振动间隔休眠时间
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bit motor_running_flag = 0; // 正在振动告警指示标志
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```
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在 `Timer1_Isr` (每 10ms 调用一次) 中驱动该状态机：
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```c
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void Motor_Pulse_Process(void) {
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if (!motor_running_flag) {
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MOTOR = 0;
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return;
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}
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motor_pattern_time += 10;
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if (motor_phase == 0) {
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// 振动阶段
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MOTOR = 1;
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if (motor_pattern_time >= motor_on_ms) {
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MOTOR = 0;
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motor_pattern_time = 0;
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motor_phase = 1; // 切换到休眠阶段
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}
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}
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else if (motor_phase == 1) {
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// 休眠间隔阶段
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MOTOR = 0;
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if (motor_pattern_time >= motor_off_ms) {
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motor_pattern_time = 0;
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motor_pulse_count++;
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if (motor_pulse_count >= motor_total_pulses) {
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// 已达到指定次数，停止当前周期振动
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MOTOR = 0;
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motor_running_flag = 0;
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} else {
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motor_phase = 0; // 继续下一次振动
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}
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}
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}
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}
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```
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### 2.3 启动与重置接口
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```c
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void Motor_Start_Alarm_Pattern(u8 type) {
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motor_pattern_time = 0;
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motor_phase = 0;
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motor_pulse_count = 0;
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switch (type) {
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case 0: // 🚪 门磁: 1 次短振 300ms
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motor_on_ms = 300; motor_off_ms = 5000; motor_total_pulses = 1;
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break;
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case 1: // 👤 PIR: 2 次短振 300ms
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motor_on_ms = 300; motor_off_ms = 200; motor_total_pulses = 2;
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break;
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case 2: // 🔥 烟感: 3 次短振 200ms
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motor_on_ms = 200; motor_off_ms = 150; motor_total_pulses = 3;
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break;
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case 3: // 🆘 紧急按钮: 1 次长振 800ms
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motor_on_ms = 800; motor_off_ms = 5000; motor_total_pulses = 1;
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break;
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case 4: // 💨 气体: 4 次短振 200ms
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motor_on_ms = 200; motor_off_ms = 100; motor_total_pulses = 4;
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break;
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case 5: // 💧 水浸: 2 次长振 600ms
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motor_on_ms = 600; motor_off_ms = 300; motor_total_pulses = 2;
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break;
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case 6: // 📳 振动: 3 次短振 150ms
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motor_on_ms = 150; motor_off_ms = 100; motor_total_pulses = 3;
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break;
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case 7: // 🚨 本地主动 SOS: 循环长振
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motor_on_ms = 1000; motor_off_ms = 200; motor_total_pulses = 0xFF; // 近似无限循环
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break;
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default:
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return;
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}
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motor_running_flag = 1;
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}
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void Motor_Stop(void) {
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motor_running_flag = 0;
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MOTOR = 0;
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}
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```
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<!-- Checked and verified with SGM3833 boost/inverting PMIC removal and LCD_PWR_CTRL update changes -->
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