scoutos / scout_avr / bom / bootloader.c @ 6b1a3a0d
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#include <inttypes.h> |
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#include <avr/interrupt.h> |
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#include <avr/pgmspace.h> |
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#include "tiny-twi-sync.h" |
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void boot_program_page (uint32_t page, uint8_t *buf)
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{ |
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uint16_t i; |
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uint8_t sreg; |
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// Disable interrupts.
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sreg = SREG; |
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cli(); |
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eeprom_busy_wait (); |
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boot_page_erase (page); |
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boot_spm_busy_wait (); // Wait until the memory is erased.
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for (i=0; i<SPM_PAGESIZE; i+=2) |
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{ |
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// Set up little-endian word.
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uint16_t w = *buf++; |
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w += (*buf++) << 8;
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boot_page_fill (page + i, w); |
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} |
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boot_page_write (page); // Store buffer in flash page.
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boot_spm_busy_wait(); // Wait until the memory is written.
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// Reenable RWW-section again. We need this if we want to jump back
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// to the application after bootloading.
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boot_rww_enable (); |
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// Re-enable interrupts (if they were ever enabled).
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SREG = sreg; |
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} |
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int main() {
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return 0; |
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} |