神奇的bootloader ！大神们进来看看！-285844685的回答

4条回答

285844685

2019-03-25 13:35

#include "usart.h"
#include "bootcfg.h"
#include "sp_driver.h"
#include "XMODEM.h"
#include "timer.h"
#include "clksys_driver.h"
//使用UARTD0 定义下载串口
#define USART USARTD0
#define USART_PORT PORTD
#define USART_TX PIN3_bm
#define USART_RX PIN2_bm
//flash页的大小
#define BUFSIZE SPM_PAGESIZE
//用户程序起始地
#define PROG_START PROGMEM_START
//flashaddr偏移地址
#define flashAddr_offset 51200
//----------------------------------------------------------------------------
//接收缓冲区
uint8_t XmodemBuffer[128]; //用于接收XMODEM发送的128字节一帧数据
uint8_t WriteBuffer[BUFSIZE]; //用于装载flash缓冲页
uint8_t buf1[BUFSIZE];
uint8_t ReadBuffer[BUFSIZE]; //读取flash页缓冲区
uint8_t upgrade_ok_flag=0;
uint8_t Packnum=0;
uint8_t temp_ch,temp_cl;
uint8_t Update_state[10]={0x5B,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x5B};
uint8_t cnt,j;
uint8_t blockcount=0;
uint8_t App_sourcecodes_page_count;
//Flash地址指针
unsigned long int FlashAddr= PROG_START;
unsigned long int FlashAddr_temp;
//unsigned long int FlashAddr= PROG_START;
//----------------------------------------------------------------------------
void putstr(const char *str);
void repay_sysclk();
//写入数据到串口
void WriteCom(unsigned char data)
{
do{
/* Wait until it is possible to put data into TX data register.
* NOTE: If TXDataRegister never becomes empty this will be a DEADLOCK. */
}while(!USART_IsTXDataRegisterEmpty(&USART));
USART_PutChar(&USART, data);
}
//----------------------------------------------------------------------------
//发送字符串并添加回车
void putstr(const char *str)
{
while(*str)
WriteCom(*str++);
// WriteCom(0x0D);
// WriteCom(0x0A); //发送回车
//WriteCom(0x0A); //发送回车
}
//----------------------------------------------------------------------------
//等待串口数据
unsigned char WaitCom(void)
{
do{
/* Wait until data received */
}while(!USART_IsRXComplete(&USART));
return(USART_GetChar(&USART));
}
//----------------------------------------------------------------------------
//更新一个Flash页
void write_one_page(unsigned char *buf,unsigned long int flashaddr)
{
FlashAddr_temp=flashaddr;
//数据填入Flash缓冲页
/* Load the flashbuffer with the test buffer. */
SP_LoadFlashPage(buf);
/* Perform page erase. *///将缓冲页数据写入一个Flash页
SP_EraseWriteApplicationPage(FlashAddr_temp);
/* Wait for NVM to finish. */
SP_WaitForSPM();//等待页编程完成
//FlashAddr=FlashAddr+BUFSIZE;
}
//----------------------------------------------------------------------------
//跳转到用户程序
void quit()
{
// putstr(msg7); //提示进入Application
EIND=0x00;
asm("ldi r30,0x00");
asm("ldi r31,0x00");
asm("eijmp");
}
void jmp_bootloader()
{
//putstr(msg5); //提示写入Flash数据错误，重新操作一次
// putstr(msg6);
WriteCom(0x5a);
WriteCom(0x02);
WriteCom(0x5a);
EIND=0x01;
asm("ldi r30,0x00");
asm("ldi r31,0x00");
asm("eijmp");
}
//----------------------------------------------------------------------------
//串口初始化9600，8，N，1，@32M CPU时钟
void USART_initial(void)
{
/* (TXD) as output. */
USART_PORT.DIRSET = USART_TX;
/* (RXD) as input. */
USART_PORT.DIRCLR = USART_RX;
/* USART, 8 Data bits, No Parity, 1 Stop bit. */
USART_Format_Set(&USART, USART_CHSIZE_8BIT_gc, USART_PMODE_DISABLED_gc, 0);
/* Set Baudrate to 9600 bps:
* Use the default I/O clock fequency that is 16 MHz.
* Do not use the baudrate scale factor
* Baudrate select = (1/(16*(((I/O clock frequency)/Baudrate)-1)
* = 103
*/
//USART_Baudrate_Set(&USART, 2484 , 12); //9600
USART_Baudrate_Set(&USART, 1539 , 9); //9600
/* Enable both RX and TX. */
USART_Rx_Enable(&USART);
USART_Tx_Enable(&USART);
}
//----------------------------------------------------------------------------
//设置系统时钟为外部晶振 12M
//----------------------------------------------------------------------------
void sysclk_XOSCinitial()
{
/* Enable
internal 32 MHz ring oscillator and wait until it's
* stable. Divide clock by two with the prescaler C and set the
* 32 MHz ring oscillator as the main clock source.
*/
CLKSYS_XOSC_Config(OSC_FRQRANGE_12TO16_gc,1,OSC_XOSCSEL_XTAL_1KCLK_gc);
CLKSYS_Enable( OSC_XOSCEN_bm );
//OSC_XOSCCTRL=0x83;
CLKSYS_Prescalers_Config( CLK_PSADIV_1_gc, CLK_PSBCDIV_1_1_gc ); //Pc为2分频，T0工作在16M
do {} while ( CLKSYS_IsReady( OSC_XOSCRDY_bm ) == 0 );
//CLKSYS_Prescalers_Config( CLK_PSADIV_1_gc, CLK_PSBCDIV_1_1_gc ); //Pc为2分频，T0工作在16M
CLKSYS_Main_ClockSource_Select( CLK_SCLKSEL_XOSC_gc );
}
//----------------------------------------------------------------------------
//设置系统时钟锁相环倍频 24M
//----------------------------------------------------------------------------
void sysclk_PLLinitial()
{
/* Enable
internal 32 MHz ring oscillator and wait until it's
* stable. Divide clock by two with the prescaler C and set the
* 32 MHz ring oscillator as the main clock source.
*/
CLKSYS_XOSC_Config(OSC_FRQRANGE_12TO16_gc,1,OSC_XOSCSEL_XTAL_1KCLK_gc);
//CLKSYS_Enable( OSC_XOSCEN_bm );
CLKSYS_Enable( OSC_XOSCEN_bm | OSC_RC2MCREF_bm);
do {} while ( CLKSYS_IsReady( OSC_XOSCRDY_bm ) == 0 );
//CLKSYS_PLL_Config(OSC_PLLSRC_XOSC_gc,OSC_PLLFAC1_bm);
CLKSYS_PLL_Config(OSC_PLLSRC_XOSC_gc,4); //change 20140916
CLKSYS_Enable( OSC_PLLEN_bm );
//CLKSYS_Prescalers_Config( CLK_PSADIV_1_gc, CLK_PSBCDIV_1_1_gc );
CLKSYS_Prescalers_Config( CLK_PSADIV_2_gc, CLK_PSBCDIV_1_1_gc ); //change 20140916
// CLKSYS_Configuration_Lock( );
do {} while ( CLKSYS_IsReady( OSC_PLLRDY_bm ) == 0 );
//CLKSYS_Prescalers_Config( CLK_PSADIV_1_gc, CLK_PSBCDIV_1_1_gc );
CLKSYS_Main_ClockSource_Select( CLK_SCLKSEL_PLL_gc );
}
//----------------------------------------------------------------------------
//设置系统时钟为内部RC 32M
//----------------------------------------------------------------------------
void sysclk_initial()
{
/* Enable internal 32 MHz ring oscillator and wait until it's
* stable. Divide clock by two with the prescaler C and set the
* 32 MHz ring oscillator as the main clock source.
*/
CLKSYS_Enable( OSC_RC32MEN_bm );
CLKSYS_Prescalers_Config( CLK_PSADIV_1_gc, CLK_PSBCDIV_1_2_gc ); //Pc为2分频，T0工作在16M
do {} while ( CLKSYS_IsReady( OSC_RC32MRDY_bm ) == 0 );
CLKSYS_Main_ClockSource_Select( CLK_SCLKSEL_RC32M_gc );
}
//设置系统时钟为内部RC 2M
//----------------------------------------------------------------------------
void repay_sysclk()
{
/* Select 2 MHz RC oscillator as main clock source and diable
* unused clock.
*/
do {} while ( CLKSYS_IsReady( OSC_RC2MRDY_bm ) == 0 );
CLKSYS_Prescalers_Config( CLK_PSADIV_1_gc, CLK_PSBCDIV_1_1_gc );
CLKSYS_Main_ClockSource_Select( CLK_SCLKSEL_RC2M_gc );
CLKSYS_Disable( OSC_PLLEN_bm ); //关掉PLL
}
void delay(uint32_t delay)
{
uint32_t i;
for (i=delay;i>0;i--)
{
asm("NOP");
}
}
uint16_t calcrc(uint8_t *ptr, int count)
{
int crc = 0;
char i;
while (--count >= 0)
{
crc = crc ^ (int) *ptr++ << 8;
i = 8;
do
{
if (crc & 0x8000)
crc = crc << 1 ^ 0x1021;
else
crc = crc << 1;
} while(--i);
}
return (crc);
}
void LED_initial()
{
PORTF_DIR=0xff;
PORTF_OUTSET=0xff;
LED1_select_enable;
LED2_select_enable;
LED3_select_enable;
LED4_select_enable;
delay(1200000);
PORTF_OUTCLR=0xff;
delay(1200000);
PORTF_OUTSET=0xff;
delay(1200000);
PORTF_OUTCLR=0xff;
delay(1200000);
PORTF_OUTSET=0xff;
delay(1200000);
PORTF_OUTCLR=0xff;
delay(1200000);
PORTF_OUTSET=0xff;
LED1_select_enable;
LED1_select_LOCK;
LED3_select_enable;
LED3_select_LOCK;
LED4_select_enable;
LED4_select_LOCK;
PORTF_OUTCLR=3<<6;
LED2_select_enable;
LED2_select_LOCK;
}
//主程序
//----------------------------------------------------------------------------
int main(void)
{
uint8_t get_char,signal=0;
uint8_t crch, crcl;
uint16_t crc0;
uint16_t i,k;
sysclk_PLLinitial(); //设定系统时钟
USART_initial(); //串口初始化
Timertc0_initial(); //定时器初始化时隙：200MS
USB_INTFLAGSACLR=0x00;
USB_INTFLAGSASET=0x00;
cnt = TimeOutCntC;
signal=0;
while(signal==0)
{
if(TC_GetOverflowFlag(&TCC0)) //T1溢出
{
TC_ClearOverflowFlag(&TCC0);
WriteCom(XMODEM_RWC); //发送 "C"
cnt--;
if(cnt==0) //超时
{
/* Update_state[1]=0x02;
Update_state[8]=0x00;
for(j=0;j<10;j++)
{
WriteCom(Update_state[j]);
//delay_us(240000);
}
//delay_us(240000);
FlashAddr=flashAddr_offset-BUFSIZE*2;
SP_ReadFlashPage(ReadBuffer,FlashAddr);
App_sourcecodes_page_count=ReadBuffer[0];
FlashAddr=flashAddr_offset-BUFSIZE;
SP_ReadFlashPage(WriteBuffer,FlashAddr);
for(i=0;i<10;i++)
{
if(i!=WriteBuffer[i])
{
FlashAddr=0;
j=0;
while(j<App_sourcecodes_page_count)
{
SP_ReadFlashPage(WriteBuffer,(FlashAddr+flashAddr_offset+512*j));
write_one_page(WriteBuffer,(FlashAddr+512*j));
SP_ReadFlashPage(ReadBuffer,(FlashAddr+512*j));
j++;
for(i=0;i<512;i++)
{
if(ReadBuffer[i]!=WriteBuffer[i])
{
j--;
break;
}
}
}
for(k=0;k<512;k++)
WriteBuffer[k]=k;
FlashAddr=flashAddr_offset-BUFSIZE;
write_one_page(WriteBuffer,FlashAddr);
while(1)
{
write_one_page(WriteBuffer,FlashAddr);
SP_ReadFlashPage(ReadBuffer,FlashAddr);
if((ReadBuffer[1]==WriteBuffer[1])&&(ReadBuffer[1]==1))
break;
}
break;
}
}*/
delay_us(240000);
repay_sysclk(); //change 20140827
quit(); //退出 bootloader
}
}
if(USART_IsRXComplete(&USART)) //收到字符？
{
get_char=USART_GetChar(&USART);
if(get_char == XMODEM_SOH) //XMODEM命令开始
{
signal=1;
break;
}
}
}
//已经收到一个起启字符了开始更新Application
//----------------------------------------------------------------
Timertc0_Stop(); //关闭定时器0
//开始接受数据
cnt = 0;
do
{
Packnum++;
temp_ch=WaitCom();
temp_cl=WaitCom();
if((Packnum==temp_ch)&&(temp_cl==(255-temp_ch))) //包序号对上了！
{
for(i =0; i <128; i++) //接收完整一帧数据
{
XmodemBuffer[i] = WaitCom();
}
temp_ch = WaitCom(); //获取校验字节
temp_cl = WaitCom();
crc0=calcrc(&XmodemBuffer[0],128); //计算校验
crch=(crc0>>8)&0xff;
crcl=crc0&0xff;
if((crch == temp_ch) && (crcl == temp_cl)) //校验成功
{
for(i=0;i<128;i++)
{
if((XmodemBuffer[i]==0x1a)&&(XmodemBuffer[i]==XmodemBuffer[127]))
XmodemBuffer[i]=0xff;
}
for(i=0;i<128;i++)
{
WriteBuffer[128*blockcount+i]=XmodemBuffer[i]; //凑满flash缓冲页256字节
}
blockcount++;
if(blockcount>=4)
{
blockcount=0;
write_one_page(WriteBuffer,(FlashAddr+flashAddr_offset)); //写入flash一页
SP_ReadFlashPage(ReadBuffer,(FlashAddr+flashAddr_offset)); //读取flash内容
FlashAddr=FlashAddr+512;
for(i=0;i<512;i++)
{
if(ReadBuffer[i]!=WriteBuffer[i]) //flash内容与缓冲区内容进行比较，不同则重新进入bootloader
{
WriteCom(XMODEM_CAN);
jmp_bootloader();
}
}
for (i=0;i<512;i++)
{
WriteBuffer[i]=0xff;
}
//PORTE_IN&0xff;
}
WriteCom(XMODEM_ACK);
}
else
{
WriteCom(XMODEM_NAK);
}
}
else
{
WriteCom(XMODEM_NAK);
}
}while(WaitCom()!=XMODEM_EOT);
WriteCom(XMODEM_ACK);
write_one_page(WriteBuffer,(FlashAddr+flashAddr_offset));
SP_ReadFlashPage(ReadBuffer,(FlashAddr+flashAddr_offset));
for(i=0;i<512;i++)
{
if(ReadBuffer[i]!=WriteBuffer[i])
jmp_bootloader();
}
for(i=0;i<512;i++)
{
WriteBuffer[i]=0xff;
ReadBuffer[i]=0x00;
}
App_sourcecodes_page_count=FlashAddr>>9;
FlashAddr=flashAddr_offset-BUFSIZE;
while(1)
{
// SP_EraseApplicationPage(FlashAddr);
write_one_page(WriteBuffer,FlashAddr);
SP_ReadFlashPage(ReadBuffer,FlashAddr);
if((ReadBuffer[1]==WriteBuffer[1])&&(ReadBuffer[1]==0xff))
break;
}
for(i=0;i<512;i++)
WriteBuffer[i]=App_sourcecodes_page_count;
FlashAddr=flashAddr_offset-BUFSIZE*2;
while(1)
{
write_one_page(WriteBuffer,FlashAddr);
SP_ReadFlashPage(ReadBuffer,FlashAddr);
if(ReadBuffer[0]==App_sourcecodes_page_count)
break;
}
FlashAddr=0;
j=0;
while(j<App_sourcecodes_page_count)
{
SP_ReadFlashPage(WriteBuffer,(FlashAddr+flashAddr_offset+512*j));
write_one_page(WriteBuffer,(FlashAddr+512*j));
SP_ReadFlashPage(ReadBuffer,(FlashAddr+512*j));
j++;
for(i=0;i<512;i++)
{
if(ReadBuffer[i]!=WriteBuffer[i])
{
j--;
break;
}
}
}
FlashAddr=0;
for(i=0;i<512;i++)
WriteBuffer[i]=i;
FlashAddr=flashAddr_offset-BUFSIZE;
//write_one_page(WriteBuffer,FlashAddr);
while(1)
{
write_one_page(WriteBuffer,FlashAddr);
SP_ReadFlashPage(ReadBuffer,FlashAddr);
if((ReadBuffer[1]==WriteBuffer[1])&&(ReadBuffer[1]==1))
break;
}
/*for(i=0;i<512;i++)
WriteBuffer[i]=App_sourcecodes_page_count;
FlashAddr=flashAddr_offset-BUFSIZE*2;
write_one_page(WriteBuffer,FlashAddr);*/
Update_state[1]=0x02;
Update_state[8]=0x01;
for(j=0;j<11;j++)
{
WriteCom(Update_state[j]);
}
delay_us(240000);
repay_sysclk(); //change 20140827
quit();
}

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感觉像是boot代码有问题。有大神帮看看擦写的部分吗

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