AVR BOOT
Posted gyang_iconergy
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了AVR BOOT相关的知识，希望对你有一定的参考价值。
1 #include <string.h> 2 #include <iom128v.h> 3 #include "main.h" 4 #include <macros.h> 5 //#include "assembly.h" 6 7 static unsigned long timer_1ms = 0; 8 static unsigned char sys_state = 0; 9 static unsigned char uart0_rx_buf[UART0_BUF_SIZE]; 10 static unsigned long flash_addr = 0; 11 void sys_set_state(unsigned char state) 12 { 13 sys_state = state; 14 } 15 unsigned long get_sys_time_ms(void) 16 { 17 return timer_1ms; 18 } 19 extern int _textmode; 20 21 int putchar(char c) 22 { 23 //if (_textmode && c == \'\\n\') 24 // putchar(\'\\r\'); 25 /* Wait for empty transmit buffer */ 26 while ( !(UCSR0A & (1<<UDRE0)) ) 27 ; 28 /* Putting data into buffer , sends the data */ 29 UDR0 = c; 30 return c; 31 } 32 int getchar(void) 33 { 34 unsigned char dat = 0; 35 unsigned char status = 0; 36 WDR(); 37 if(((UCSR0A & 0x80)==0)){ 38 return -1; 39 } 40 status = UCSR0A; 41 dat = UDR0; 42 if(status & 0x1C){ 43 return -2; 44 } 45 46 return dat; 47 } 48 void sendStr(char *str) 49 { 50 int len = 0; 51 unsigned char i = 0; 52 len = strlen(str); 53 for(i = 0; i < len; i++) 54 putchar(str[i]); 55 while ( !(UCSR0A & (1<<UDRE0)) ); 56 } 57 void port_init(void) 58 { 59 // MCUCSR |= 0x80; 60 // MCUCSR |= 0x80; 61 PORTA = 0x07; //PA3~PA7 IS LOW,PA2~PA0 IS HIGH 62 DDRA = 0xFF; 63 PORTB = 0xFb; //MOSI(PB2) is low ***** 64 DDRB = 0xF7; //PB3 IS INPUT 65 PORTC = 0xFF; //m103 output only 66 DDRC = 0xFF; 67 PORTD = 0xFF; 68 DDRD = 0x00; //PD0~7 IS INPUT 69 PORTE = 0xFF; 70 DDRE = 0xFE; 71 PORTF = 0xFF; 72 DDRF = 0x00; 73 PORTG = 0x1F; 74 DDRG = 0x00; 75 } 76 void uart0_init(void) 77 { 78 UCSR0B = 0x00; //disable while setting baud rate 79 UCSR0A = 0x00; 80 UCSR0C = 0x06; 81 //6MHz 82 UBRR0L = 0x26; //set baud rate lo 83 //14.7456MHz 9600bps 84 // UBRR0L = 0x5F; //set baud rate lo 85 //14.7456MHz 115200bps 86 // UBRR0L = 0x07; //set baud rate lo 87 UBRR0H = 0x00; //set baud rate hi 88 // UCSR0B = 0xD8; //0xB8 89 // UCSR0B = 0xB8; //0xD8 90 //UCSR0B = 0x98; //0xD8,0xB8 91 UCSR0B = 0x18; //0xD8,0xB8,disable rcv interrupt 92 } 93 // OSC:6MHz, prescale:1024 94 void timer0_init(void) 95 { 96 TCCR0 = 0x00; //stop 97 ASSR = 0x00; //set async mode 98 TCNT0 = 0xf9; //set count 99 OCR0 = 0xD7; 100 TCCR0 = 0x07; //start timer 101 } 102 #pragma interrupt_handler timer0_ovf_isr:17 103 void timer0_ovf_isr(void) 104 { 105 TCNT0 = 0xf9; //reload counter value 106 timer_1ms++; 107 } 108 void watchdog_off(void) 109 { 110 // Write logical one to WDCE and WDE 111 WDTCR = (1<<WDCE) | (1<<WDE); 112 // Turn off WDT 113 WDTCR = 0x00; 114 } 115 void watchdog_init(unsigned char time) 116 { 117 WDR(); //this prevents a timout on enabling 118 // Write logical one to WDCE and WDE 119 WDTCR = (1<<WDCE) | (1<<WDE); 120 time&=0x07; // prescale: n cycles time=0~7,WDCE=0 121 time|=0x08; // prescale: n cycles time=0~7,WDE=1 122 WDTCR=time; //WATCHDOG ENABLED - dont forget to issue WDRs 123 } 124 #if 0 125 void delay_1ms(void) 126 { 127 unsigned int i; 128 for(i=1;i<(unsigned int)(XTAL*143-20);i++) 129 { 130 WDR(); 131 } 132 } 133 void delay_ms(unsigned int n) 134 { 135 unsigned int i=0; 136 while(i<n) 137 { 138 delay_1ms(); 139 i++; 140 } 141 } 142 #endif 143 void init_devices(void) 144 { 145 CLI(); //disable all interrupts 146 XDIV = 0x00; //xtal divider 147 XMCRA = 0x00; //external memory 148 port_init(); 149 uart0_init(); 150 timer0_init(); 151 152 MCUCR = 0x00; 153 EICRA = 0x00; //extended ext ints 154 sbi(TIMSK,TOIE0); 155 // sbi(TIMSK,TOIE1); //允许定时器1溢出中断 156 // sbi(TIMSK,TOIE2); //允许定时器2溢出中断 157 watchdog_init(7); 158 //SEI(); //re-enable interrupts 159 //all peripherals are now initialised 160 } 161 #if 0 162 void EEPROMwrite(unsigned int location, unsigned char byte) 163 //unsigned int eepromwrite(unsigned int location, unsigned char byte) 164 { 165 unsigned char oldSREG; 166 oldSREG = SREG; 167 SREG &= ~0x80; // disable interrupt 168 // Wait for completion of previous write 169 while(EECR & (1<<EEWE)) ; 170 // Set up address and data registers 171 EEAR = location; 172 EEDR = byte; 173 // Write logical one to EEMWE 174 EECR |= (1<<EEMWE); 175 // Start eeprom write by setting EEWE 176 EECR |= (1<<EEWE); 177 178 SREG = oldSREG; 179 // return 0; // return Success. ? 180 } 181 unsigned char EEPROMread(unsigned int location) 182 //unsigned char eepromread(unsigned int location) 183 { 184 unsigned char oldSREG; 185 oldSREG = SREG; 186 SREG &= ~0x80; // disable interrupt 187 // Wait for completion of previous write 188 while(EECR & (1<<EEWE)) ; 189 // Set up address register 190 EEAR = location; 191 // Start eeprom read by writing EERE 192 EECR |= (1<<EERE); 193 194 SREG = oldSREG; 195 // Return data from data register 196 return EEDR; 197 } 198 #endif 199 #if 1 200 void wait_page_rw_ok(void) 201 { 202 //while(SPMCSR & 0x40){ 203 { 204 while(SPMCSR & 0x01); 205 //SPMCSR = 0x11; 206 asm("spm\\n"); 207 } 208 } 209 // code:0x03:erase, code:0x05:write a page 210 void boot_page_ew(unsigned long addr,unsigned char code) 211 { 212 wait_page_rw_ok(); 213 asm("mov r30,r16\\n" 214 "mov r31,r17\\n" 215 "out 0x3b,r18\\n" 216 ); // put addr into Z register and RAMPZ\'s BIT0 217 SPMCSR = code; // set operate code 218 asm("spm\\n"); // operate flash page 219 wait_page_rw_ok(); 220 } 221 // fill one word into a page 222 void boot_page_fill(unsigned int pg_addr,unsigned int data) 223 { 224 pg_addr = pg_addr; 225 data = data; 226 wait_page_rw_ok(); 227 asm("mov r30,r16\\n" 228 "mov r31,r17\\n" // Z register is page addr 229 "mov r0,r18\\n" 230 "mov r1,r19\\n" // R0R1 operate word 231 ); 232 SPMCSR = 0x01; 233 asm("spm\\n"); // operate flash page 234 } 235 void write_one_page(unsigned long f_addr) 236 { 237 int i = 0; 238 for(i = 0; i < FLASH_PG_SIZE;i+=2){ 239 boot_page_fill(i,uart0_rx_buf[i]|(uart0_rx_buf[i+1]<<8)); 240 } 241 boot_page_ew(flash_addr,0x03); 242 boot_page_ew(flash_addr,0x05); 243 } 244 int check_one_page_ok(unsigned long f_addr) 245 { 246 unsigned char dat = 0; 247 int i = 0; 248 #if 0 249 asm("mov r30,r16\\n" 250 "mov r31,r17\\n" 251 "out 0x3b,r18\\n" 252 ); // put addr into Z register and RAMPZ\'s BIT0 253 for(i = 0; i < FLASH_PG_SIZE; i++){ 254 asm("elpm r0,Z+"); 255 asm("mov %dat, r0"); 256 //if(dat != uart0_rx_buf[i]) 257 // return 0; 258 } 259 #endif 260 return 1; 261 } 262 #else 263 void WriteFlash(void) 264 { 265 unsigned int i; 266 unsigned int TempInt; 267 for (i=0;i<FLASH_PG_SIZE;i+=2) 268 { 269 TempInt=uart0_rx_buf[i]+(uart0_rx_buf[i+1]<<8); 270 fill_temp_buffer(TempInt,i); //call asm routine. 271 } 272 write_page(flash_addr,0x03); //擦除页 273 write_page(flash_addr,0x05); //写页数据 274 275 enableRWW(); 276 } 277 #endif 278 #if 0 279 #pragma interrupt_handler uart0_rxc_isr:19 //iv_USART0_RX 280 void uart0_rxc_isr( void ) 281 { 282 #if 0 283 unsigned char data; 284 unsigned char index; 285 data = UDR0; 286 #endif 287 } 288 #endif 289 void sys_choice_process(void) 290 { 291 unsigned long time_enter = 0; 292 int dat = 0; 293 time_enter = get_sys_time_ms(); 294 //sendStr("press \'d\' to download fw:"); 295 while(1){ 296 dat = getchar(); 297 //if(\'d\' == dat){ 298 { 299 putchar(XMODEM_NAK); 300 sys_set_state(SYS_STATE_READ_DAT); 301 return; 302 } 303 #if 0 304 if(get_sys_time_ms() - time_enter >= SYS_WAIT_TIME){ 305 sys_set_state(SYS_STATE_ERROR); 306 return; 307 } 308 #endif 309 } 310 311 return; 312 } 313 #if 0 314 void sys_ack_process(void) 315 { 316 // Nothing, put ack to read data process 317 return; 318 } 319 #endif 320 unsigned char read_start = 0; 321 void sys_read_data_process(void) 322 { 323 int dat = 0; 324 int count = 0; 325 unsigned int i = 0,ee_addr = 0,err_count = 0,cancel_flag = 0; 326 unsigned char checksum = 0; 327 //unsigned long flash_addr = 0; 328 unsigned char packet_sn = 0,block = 0; 329 unsigned long timer = 0; 330 read_start = 0; 331 while(1){ 332 #if 1 333 if(0 == read_start){ 334 timer++; 335 if((timer > 600000) ){ 336 sys_set_state(SYS_STATE_END); 337 return; 338 } 339 } 340 #endif 341 dat = getchar(); 342 if(dat >= 0){ 343 344 if(0 == count){ 345 if(XMODEM_EOT == dat){ 346 read_start = 1; 347 if(1 == block){ 348 write_one_page(flash_addr); 349 } 350 putchar(XMODEM_ACK); 351 sys_set_state(SYS_STATE_END); 352 return; 353 }else if(XMODEM_SOH == dat){ // start flag 354 cancel_flag = 0; 355 }else if(XMODEM_CAN == dat){ // cancel flag 356 cancel_flag = 1; 357 } 358 359 }else if(1 == count){ 360 if(1 == cancel_flag){ 361 if(XMODEM_CAN == dat){ 362 cancel_flag = 2; 363 }else{ 364 putchar(\'1\'); 365 goto error; 366 } 367 } 368 // Note:when packet number reach to 255, it reset to zero,not 1 369 if((dat - packet_sn == 1)|| ((0x0 == dat) &&(0xff == packet_sn))){ // sn ok 370 packet_sn = dat; 371 }else{ // sn error 372 putchar(\'2\'); 373 goto error; 374 } 375 }else if(2 == count){ 376 if(2 == cancel_flag){ 377 if(XMODEM_CAN == dat){ 378 sys_set_state(SYS_STATE_CANCEL); 379 return; 380 }else{ 381 putchar(用 AVR 计算七段数字Spring boot：thymeleaf 没有正确渲染片段
解决spring-boot启动中碰到的问题：Cannot determine embedded database driver class for database type NONE(转)(代码片段