我的 party_sequence 函数（在情况 9 中：持续运行（按预期），但当我尝试使用按钮开关关闭 LED 时，该函数仍然运行。
如何让函数在关闭开关时停止运行并在重新打开开关时返回到 case:0？
我正在使用一个简单的按钮开关来切换颜色。
我是编程新手，因此如果您需要更多信息，请告诉我。
谢谢！
party_sequence函数：
void party_sequence(void) {
int i = 0;
while (1) {
for (i = 0; i < 360; i++) {
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, sins[i]); // Red
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, sins[(i + 120) % 360]); // Green
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, sins[(i + 240) % 360]); // Blue
HAL_Delay(2);
}
}
};
完整代码：
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_TIM3_Init();
HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_3); // Red
HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_2); // Green
HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_4); // Blue
uint8_t sins[360] = {
127,129,131,134,136,138,140,143,145,147,149,151,154,156,158,160,162,164,166,169,171,173,175,177,179,181,183,185,187,189,191,193,195,196,198,200,
202,204,205,207,209,211,212,214,216,217,219,220,222,223,225,226,227,229,230,231,233,234,235,236,237,239,240,241,242,243,243,244,245,246,247,248,
248,249,250,250,251,251,252,252,253,253,253,254,254,254,254,254,254,254,255,254,254,254,254,254,254,254,253,253,253,252,252,251,251,250,250,249,
248,248,247,246,245,244,243,243,242,241,240,239,237,236,235,234,233,231,230,229,227,226,225,223,222,220,219,217,216,214,212,211,209,207,205,204,
202,200,198,196,195,193,191,189,187,185,183,181,179,177,175,173,171,169,166,164,162,160,158,156,154,151,149,147,145,143,140,138,136,134,131,129,
127,125,123,120,118,116,114,111,109,107,105,103,100,98,96,94,92,90,88,85,83,81,79,77,75,73,71,69,67,65,63,61,59,58,56,54,
52,50,49,47,45,43,42,40,38,37,35,34,32,31,29,28,27,25,24,23,21,20,19,18,17,15,14,13,12,11,11,10,9,8,7,6,
6,5,4,4,3,3,2,2,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,2,2,3,3,4,4,5,
6,6,7,8,9,10,11,11,12,13,14,15,17,18,19,20,21,23,24,25,27,28,29,31,32,34,35,37,38,40,42,43,45,47,49,50,
52,54,56,58,59,61,63,65,67,69,71,73,75,77,79,81,83,85,88,90,92,94,96,98,100,103,105,107,109,111,114,116,118,120,123,125
};
enum button_state_e {
BUTTON_NOT_PRESSED,
BUTTON_JUST_PRESSED,
BUTTON_PRESSED
};
static enum button_state_e button_state = BUTTON_NOT_PRESSED;
static uint8_t color_sequence = 0;
void red_sequence(void) {
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, 230); // Red
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, 0); // Green
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, 0); // Blue
};
void green_sequence(void) {
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, 0); // Red
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, 230); // Green
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, 0); // Blue
};
void blue_sequence(void) {
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, 0); // Red
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, 0); // Green
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, 230); // Blue
};
void pink_sequence(void) {
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, 230); // Red
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, 0); // Green
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, 50); // Blue
};
void teal_sequence(void) {
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, 0); // Red
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, 230); // Green
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, 230); // Blue
};
void yellow_sequence(void) {
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, 230); // Red
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, 140); // Green
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, 0); // Blue
};
void orange_sequence(void) {
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, 230); // Red
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, 25); // Green
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, 0); // Blue
};
void purple_sequence(void) {
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, 230); // Red
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, 0); // Green
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, 100); // Blue
};
void white_sequence(void) {
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, 230); // Red
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, 230); // Green
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, 230); // Blue
};
void party_sequence(void) {
int i = 0;
while (1) {
for (i = 0; i < 360; i++) {
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, sins[i]); // Red
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, sins[(i + 120) % 360]); // Green
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, sins[(i + 240) % 360]); // Blue
HAL_Delay(2);
}
}
};
void switch_off_all_leds(void)
{
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, 0); // Red
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, 0); // Green
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, 0); // Blue
};
while (1)
{
bool pressed = (HAL_GPIO_ReadPin(Toggle_Switch_GPIO_Port, Toggle_Switch_Pin) == GPIO_PIN_SET);
switch (button_state)
{
case BUTTON_NOT_PRESSED:
if (pressed)
button_state = BUTTON_JUST_PRESSED;
break;
case BUTTON_JUST_PRESSED:
if (pressed)
{
button_state = BUTTON_PRESSED;
switch (color_sequence) {
case 0:
red_sequence();
break;
case 1:
green_sequence();
break;
case 2:
blue_sequence();
break;
case 3:
pink_sequence();
break;
case 4:
teal_sequence();
break;
case 5:
yellow_sequence();
break;
case 6:
orange_sequence();
break;
case 7:
purple_sequence();
break;
case 8:
white_sequence();
break;
case 9:
party_sequence();
break;
}
color_sequence = (color_sequence + 1) % 10;
}
else
button_state = BUTTON_NOT_PRESSED;
break;
case BUTTON_PRESSED:
if (!pressed)
{
button_state = BUTTON_NOT_PRESSED;
switch_off_all_leds();
}
break;
}
HAL_Delay(10);
}
}
如何将
while (1)party_sequence()while (HAL_GPIO_ReadPin(Toggle_Switch_GPIO_Port, Toggle_Switch_Pin) == GPIO_PIN_SET)
{
// Do the party sequence
}
即只要开关“打开”，它就会运行，但当开关“关闭”时，它就会停止。然后您的主循环将看到开关已关闭并关闭 LED。
作为替代方案，如果您希望它立即启动而不是完成序列，请执行以下操作：
while (1) {
for (i = 0; i < 360; i++) {
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, sins[i]); // Red
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_2, sins[(i + 120) % 360]); // Green
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, sins[(i + 240) % 360]); // Blue
HAL_Delay(2);
if (HAL_GPIO_ReadPin(Toggle_Switch_GPIO_Port, Toggle_Switch_Pin) != GPIO_PIN_SET)
return;
}
}