main.txt

STM32的串口例程

;;;126        /* Enable Prefetch Buffer */
;;;127        FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
000038  2010              MOVS     r0,#0x10
00003a  f7fffffe          BL       FLASH_PrefetchBufferCmd
;;;128    
;;;129        /* PLLCLK = 8MHz * 9 = 72 MHz */
;;;130        RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
00003e  f44f11e0          MOV      r1,#0x1c0000
000042  f44f3080          MOV      r0,#0x10000
000046  f7fffffe          BL       RCC_PLLConfig
;;;131    
;;;132        /* Enable PLL */ 
;;;133        RCC_PLLCmd(ENABLE);
00004a  2001              MOVS     r0,#1
00004c  f7fffffe          BL       RCC_PLLCmd
;;;134    
;;;135        /* Wait till PLL is ready */
;;;136        while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
000050  bf00              NOP      
                  |L4.82|
000052  2039              MOVS     r0,#0x39
000054  f7fffffe          BL       RCC_GetFlagStatus
000058  2800              CMP      r0,#0
00005a  d0fa              BEQ      |L4.82|
;;;137        {
;;;138        }
;;;139    
;;;140        /* Select PLL as system clock source */
;;;141        RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
00005c  2002              MOVS     r0,#2
00005e  f7fffffe          BL       RCC_SYSCLKConfig
;;;142    
;;;143        /* Wait till PLL is used as system clock source */
;;;144        while(RCC_GetSYSCLKSource() != 0x08)
000062  bf00              NOP      
                  |L4.100|
000064  f7fffffe          BL       RCC_GetSYSCLKSource
000068  2808              CMP      r0,#8
00006a  d1fb              BNE      |L4.100|
                  |L4.108|
;;;145        {
;;;146        }
;;;147      }
;;;148       
;;;149      /* Enable USART1 and GPIOA clock */
;;;150      RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);
00006c  2101              MOVS     r1,#1
00006e  f2440004          MOV      r0,#0x4004
000072  f7fffffe          BL       RCC_APB2PeriphClockCmd
;;;151    }
000076  bd10              POP      {r4,pc}
;;;152    
                          ENDP

                  |L4.120|
000078  00000000          DCD      HSEStartUpStatus

                          AREA ||i.main||, CODE, READONLY, ALIGN=2

                  main PROC
;;;33     int main(void)
;;;34     {  u16 i=0;
000000  b510              PUSH     {r4,lr}
000002  2400              MOVS     r4,#0
;;;35        
;;;36        
;;;37     #ifdef DEBUG
;;;38       debug();
;;;39     #endif
;;;40     
;;;41       /* Configure the system clocks */
;;;42       RCC_Configuration();
000004  f7fffffe          BL       RCC_Configuration
;;;43         
;;;44       /* NVIC Configuration */
;;;45       NVIC_Configuration();
000008  f7fffffe          BL       NVIC_Configuration
;;;46     
;;;47       /* Configure the GPIOs */
;;;48       GPIO_Configuration();
00000c  f7fffffe          BL       GPIO_Configuration
;;;49       
;;;50       /* Configure the USART1 */
;;;51       USART_Configuration();
000010  f7fffffe          BL       USART_Configuration
;;;52     
;;;53       
;;;54       printf("\r\n Welcome to WUHAN R&D Center,Embest  \r\n");
000014  a00b              ADR      r0,|L5.68|
000016  f7fffffe          BL       __1printf
;;;55       printf("\r\n Please Input Character From Keyboard \r\n\r\n");
00001a  a015              ADR      r0,|L5.112|
00001c  f7fffffe          BL       __1printf
;;;56     while(1	)
000020  e00e              B        |L5.64|
                  |L5.34|
;;;57     	{	
;;;58     		if(USART_GetFlagStatus(USART1,USART_IT_RXNE)==SET)
000022  f2405125          MOV      r1,#0x525
000026  481e              LDR      r0,|L5.160|
000028  f7fffffe          BL       USART_GetFlagStatus
00002c  2801              CMP      r0,#1
00002e  d107              BNE      |L5.64|
;;;59     		{	           
;;;60     			i = USART_ReceiveData(USART1);
000030  481b              LDR      r0,|L5.160|
000032  f7fffffe          BL       USART_ReceiveData
000036  4604              MOV      r4,r0
;;;61     			printf("%c",i&0xFF);	   /* print the input char */
000038  b2e1              UXTB     r1,r4
00003a  a01a              ADR      r0,|L5.164|
00003c  f7fffffe          BL       __1printf
                  |L5.64|
000040  e7ef              B        |L5.34|
;;;62     			//printf("%s","ok!\r\n");
;;;63     					
;;;64     		}
;;;65     		//printf("%s","ok!\r\n");
;;;66     	}
;;;67     
;;;68     }
;;;69     
                          ENDP

000042  0000              DCW      0x0000
                  |L5.68|
000044  0d0a2057          DCB      "\r\n\40\127"
000048  656c636f          DCB      "elco"
00004c  6d652074          DCB      "me t"
000050  6f205755          DCB      "o WU"
000054  48414e20          DCB      "HAN "
000058  52264420          DCB      "R&D "
00005c  43656e74          DCB      "Cent"
000060  65722c45          DCB      "er,E"
000064  6d626573          DCB      "mbes"
000068  7420200d          DCB      "t  \r"
00006c  0a000000          DCB      "\n\0\0\0"
                  |L5.112|
000070  0d0a2050          DCB      "\r\n\40\120"
000074  6c656173          DCB      "leas"
000078  6520496e          DCB      "e In"
00007c  70757420          DCB      "put "
000080  43686172          DCB      "Char"
000084  61637465          DCB      "acte"
000088  72204672          DCB      "r Fr"
00008c  6f6d204b          DCB      "om K"
000090  6579626f          DCB      "eybo"
000094  61726420          DCB      "ard "
000098  0d0a0d0a          DCB      "\r\n\r\n"
00009c  00000000          DCB      "\0\0\0\0"
                  |L5.160|
0000a0  40013800          DCD      0x40013800
                  |L5.164|
0000a4  25630000          DCB      "%c\0\0"

                          AREA ||i.fputc||, CODE, READONLY, ALIGN=2

                  fputc PROC
;;;254    int fputc(int ch, FILE *f)
;;;255    {
000000  b570              PUSH     {r4-r6,lr}
000002  4604              MOV      r4,r0
000004  460d              MOV      r5,r1
;;;256      /* Place your implementation of fputc here */
;;;257      /* e.g. write a character to the USART */
;;;258      USART_SendData(USART1, (u8) ch);
000006  b2e1              UXTB     r1,r4
000008  4805              LDR      r0,|L6.32|
00000a  f7fffffe          BL       USART_SendData
;;;259    
;;;260      /* Loop until the end of transmission */
;;;261      while(USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)
00000e  bf00              NOP      
                  |L6.16|
000010  2140              MOVS     r1,#0x40
000012  4803              LDR      r0,|L6.32|
000014  f7fffffe          BL       USART_GetFlagStatus
000018  2800              CMP      r0,#0
00001a  d0f9              BEQ      |L6.16|
;;;262      {
;;;263      }
;;;264    
;;;265      return ch;
00001c  4620              MOV      r0,r4
;;;266    }
00001e  bd70              POP      {r4-r6,pc}
;;;267    
                          ENDP

                  |L6.32|
000020  40013800          DCD      0x40013800

                          AREA ||.data||, DATA, ALIGN=0

                  HSEStartUpStatus
000000  00                DCB      0x00

                  __ARM_use_no_argv EQU 0