tutorials:library:arduino:bootloader.html
| Both sides previous revision Previous revision Next revision | Previous revision | ||
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tutorials:library:arduino:bootloader.html [2011/04/14 21:15] daigo |
tutorials:library:arduino:bootloader.html [2016/01/28 18:05] (current) |
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| Line 29: | Line 29: | ||
| uint8_t ch,ch2; | uint8_t ch,ch2; | ||
| uint16_t w; | uint16_t w; | ||
| - | <strong> | + | |
| ch = MCUSR; | ch = MCUSR; | ||
| MCUSR = 0; | MCUSR = 0; | ||
| Line 49: | Line 49: | ||
| else if(ch=='Q') { | else if(ch=='Q') { | ||
| nothing_response(); | nothing_response(); | ||
| - | <strong> | + | |
| // autoreset via watchdog (sneaky!) | // autoreset via watchdog (sneaky!) | ||
| WDTCSR = _BV(WDE); | WDTCSR = _BV(WDE); | ||
| Line 89: | Line 89: | ||
| uint8_t ch,ch2; | uint8_t ch,ch2; | ||
| uint16_t w; | uint16_t w; | ||
| - | **uint8_t firstchar = 0;** | + | uint8_t firstchar = 0; |
| ..... | ..... | ||
| Line 95: | Line 95: | ||
| /* Hello is anyone home ? */ | /* Hello is anyone home ? */ | ||
| if(ch=='0') { | if(ch=='0') { | ||
| - | fi**rstchar = 1; // we got an appropriate bootloader instruction** | + | firstchar = 1; // we got an appropriate bootloader instruction |
| nothing_response(); | nothing_response(); | ||
| - | } <strong>else if (firstchar == 0) { | + | }else if (firstchar == 0) { |
| // the first character we got is not '0', lets bail! | // the first character we got is not '0', lets bail! | ||
| // autoreset via watchdog (sneaky!) | // autoreset via watchdog (sneaky!) | ||
| WDTCSR = _BV(WDE); | WDTCSR = _BV(WDE); | ||
| while (1); // 16 ms | while (1); // 16 ms | ||
| - | }</strong> | + | } |
| </code> | </code> | ||
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