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Home > Study > Arm Architecture

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Arm Architecture

[ex46]
문제 설명 정답 코드 //stm32f10x_it.c volatile int Uart1_Rx_In = 0; volatile int Uart1_Rx_Data = 0; void USART1_IRQHandler(void) { Uart1_Rx_Data = (unsigned char)USART1->DR; Uart1_Send_Byte(Uart1_Rx_Data); Uart1_Rx_In = 1; NVIC_ClearPendingIRQ(37); } volatile int note_end = 0; void TIM2_IRQHandler(void) { Macro_Clear_Bit(TIM2->SR, 0); NVIC_ClearPendingIRQ(28); note_end = 1; } //main.c #include "device_driver.h" static void Sys_Init(void) { Clock_Init(); LED_Init(); Uart_Init(115200); Key_Poll_Init(); SCB->VTOR = 0x08003000; SCB->SHCSR = 0; } #define BASE (500) //msec enum key{C1, C1_, D1, D1_, E1, F1, F1_, G1, G1_, A1, A1_, B1, C2, C2_, D2, D2_, E2, F2, F2_, G2, G2_, A2, A2_, B2}; enum note{N16=BASE/4, N8=BASE/2, N4=BASE, N2=BASE*2, N1=BASE*4}; const int song1[][2] = { {G1,N4},{G1,N4},{E1,N8},{F1,N8},{G1,N4},{A1,N4},{A1,N4},{G1,N2},{G1,N4},{C2,N4},{E2,N4},{D2,N8},{C2,N8},{D2,N2} }; static void Buzzer_Beep(unsigned char tone, int duration) { const static unsigned short tone_value[] = {261,277,293,311,329,349,369,391,415,440,466,493,523,554,587,622,659,698,739,783,830,880,932,987}; TIM3_Out_Freq_Generation(tone_value[tone]); TIM2_Delay(duration); } extern volatile int Uart1_Rx_In; extern volatile int Uart1_Rx_Data; extern volatile int note_end; void Main(void) { Sys_Init(); TIM4_Out_Init(); TIM3_Out_Init(); Uart1_RX_Interrupt_Enable(1); static int timer_run = 0; volatile int i = 0; Buzzer_Beep(song1[i][0], song1[i][1]); for(;;) { if (Uart1_Rx_In) { Uart1_Rx_Data = Uart1_Rx_Data - '0'; if (Uart1_Rx_Data == 0) { TIM4_Out_Stop(); timer_run = 0; } else { if (timer_run == 0) { TIM4_Out_PWM_Generation(1000, Uart1_Rx_Data); timer_run = 1; } else { TIM4_Change_Duty(Uart1_Rx_Data); } } Uart1_Rx_In = 0; } if (note_end) { TIM3_Out_Stop(); i++; if (i >= sizeof(song1)/sizeof(song1[0])) { i = 0; } Buzzer_Beep(song1[i][0], song1[i][1]); note_end = 0; } } } 메모 printf 내부의 \n 습관화 필요
Study · 2025-03-18
Example Post: thumbnail exists
Follow the guidance Fill the image path to the ‘thumbnail’ attribute, if you want a main image to be displayed on the post header image. --- title: "Example Post: thumbnail exists" date: "2023-12-02" thumbnail: "/assets/img/thumbnail/bricks.webp" --- The rest content is just meaningless dummy text. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
Study · 2023-12-02

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