#include "stm32f1xx_hal.h" // ??LED?? - ???????? #define LED1_PIN GPIO_PIN_0 #define LED1_PORT GPIOA #define LED2_PIN GPIO_PIN_1 #define LED2_PORT GPIOA #define LED3_PIN GPIO_PIN_2 #define LED3_PORT GPIOA #define LED4_PIN GPIO_PIN_3 #define LED4_PORT GPIOA #define LED5_PIN GPIO_PIN_4 #define LED5_PORT GPIOA #define LED6_PIN GPIO_PIN_5 #define LED6_PORT GPIOA #define LED7_PIN GPIO_PIN_6 #define LED7_PORT GPIOA #define LED8_PIN GPIO_PIN_7 #define LED8_PORT GPIOA // ??????? #define BUZZER_PIN GPIO_PIN_8 #define BUZZER_PORT GPIOA // ?????? (Hz) #define NOTE_C4 262 #define NOTE_D4 294 #define NOTE_E4 330 #define NOTE_F4 349 #define NOTE_G4 392 #define NOTE_A4 440 #define NOTE_B4 494 #define NOTE_C5 523 #define NOTE_REST 0 // ??? // ???????? #define WHOLE_NOTE 1600 #define HALF_NOTE WHOLE_NOTE/2 #define QUARTER_NOTE WHOLE_NOTE/4 #define EIGHTH_NOTE WHOLE_NOTE/8 #define SIXTEENTH_NOTE WHOLE_NOTE/16 void HAL_delay_US(uint32_t us) ; // «??»?????? (??) typedef struct { int note; int duration; int led; // ?????LED (1-8) } MelodyNote; MelodyNote qingtian[] = { {NOTE_E4, EIGHTH_NOTE, 1}, {NOTE_G4, EIGHTH_NOTE, 2}, {NOTE_C5, QUARTER_NOTE, 3}, {NOTE_B4, EIGHTH_NOTE, 4}, {NOTE_G4, EIGHTH_NOTE, 5}, {NOTE_A4, QUARTER_NOTE, 6}, {NOTE_G4, HALF_NOTE, 7}, {NOTE_E4, QUARTER_NOTE, 8}, {NOTE_REST, QUARTER_NOTE, 0}, // ???,??LED?? // ??????????... }; // ???GPIO void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct = {0}; __HAL_RCC_GPIOA_CLK_ENABLE(); // ??LED????? GPIO_InitStruct.Pin = LED1_PIN | LED2_PIN | LED3_PIN | LED4_PIN | LED5_PIN | LED6_PIN | LED7_PIN | LED8_PIN; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); // ??????? GPIO_InitStruct.Pin = BUZZER_PIN; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; HAL_GPIO_Init(BUZZER_PORT, &GPIO_InitStruct); } // ????LED?????LED void SetLED(int ledNum) { // ?????LED HAL_GPIO_WritePin(LED1_PORT, LED1_PIN, GPIO_PIN_RESET); HAL_GPIO_WritePin(LED2_PORT, LED2_PIN, GPIO_PIN_RESET); HAL_GPIO_WritePin(LED3_PORT, LED3_PIN, GPIO_PIN_RESET); HAL_GPIO_WritePin(LED4_PORT, LED4_PIN, GPIO_PIN_RESET); HAL_GPIO_WritePin(LED5_PORT, LED5_PIN, GPIO_PIN_RESET); HAL_GPIO_WritePin(LED6_PORT, LED6_PIN, GPIO_PIN_RESET); HAL_GPIO_WritePin(LED7_PORT, LED7_PIN, GPIO_PIN_RESET); HAL_GPIO_WritePin(LED8_PORT, LED8_PIN, GPIO_PIN_RESET); // ?????LED switch(ledNum) { case 1: HAL_GPIO_WritePin(LED1_PORT, LED1_PIN, GPIO_PIN_SET); break; case 2: HAL_GPIO_WritePin(LED2_PORT, LED2_PIN, GPIO_PIN_SET); break; case 3: HAL_GPIO_WritePin(LED3_PORT, LED3_PIN, GPIO_PIN_SET); break; case 4: HAL_GPIO_WritePin(LED4_PORT, LED4_PIN, GPIO_PIN_SET); break; case 5: HAL_GPIO_WritePin(LED5_PORT, LED5_PIN, GPIO_PIN_SET); break; case 6: HAL_GPIO_WritePin(LED6_PORT, LED6_PIN, GPIO_PIN_SET); break; case 7: HAL_GPIO_WritePin(LED7_PORT, LED7_PIN, GPIO_PIN_SET); break; case 8: HAL_GPIO_WritePin(LED8_PORT, LED8_PIN, GPIO_PIN_SET); break; case 0: // ???,??LED?? default: break; } } // ?????????(??????) void Beep(int frequency, int duration) { if (frequency == NOTE_REST) { HAL_GPIO_WritePin(BUZZER_PORT, BUZZER_PIN, GPIO_PIN_RESET); HAL_Delay(duration); return; } int period = 1000000 / frequency; // ??(??) int halfPeriod = period / 2; int cycles = duration * 1000 / period; for (int i = 0; i < cycles; i++) { HAL_GPIO_WritePin(BUZZER_PORT, BUZZER_PIN, GPIO_PIN_SET); HAL_delay_US(halfPeriod); HAL_GPIO_WritePin(BUZZER_PORT, BUZZER_PIN, GPIO_PIN_RESET); HAL_delay_US(halfPeriod); } } // ???????LED void PlayMelody(MelodyNote *melody, int length) { for (int i = 0; i < length; i++) { SetLED(melody[i].led); // ????LED Beep(melody[i].note, melody[i].duration); // ???? } } int main(void) { HAL_Init(); MX_GPIO_Init(); // ?????? int melodyLength = sizeof(qingtian) / sizeof(qingtian[0]); while (1) { PlayMelody(qingtian, melodyLength); HAL_Delay(2000); // ????????2???? } } // ???????(????) void HAL_delay_US(uint32_t us) { uint32_t ticks=us*(SystemCoreClock /1000000); uint32_t start = SysTick ->VAL ; while ((SysTick->VAL - start + (SystemCoreClock / 1000000)) % (SystemCoreClock / 1000000) < ticks); }