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atusb/fw/flash.c: simplified logic of flash_write and corrected several small bugs
- flash.c (flash_write): we don't use eeprom_busy_wait, removed it - flash.c (flash_write): write the page only at one place - flash.c (flash_write): corrected the address of the page write - flash.c (flash_write): value being added to word wasn't shifted
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@ -40,27 +40,23 @@ void flash_write(const uint8_t *buf, uint16_t size)
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static uint8_t last;
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const uint8_t *p;
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eeprom_busy_wait();
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for (p = buf; p != buf+size; p++) {
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if (!(payload & (SPM_PAGESIZE-1))) {
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if (payload) {
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boot_page_write(payload-SPM_PAGESIZE);
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boot_spm_busy_wait();
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}
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boot_page_erase(payload);
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boot_spm_busy_wait();
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}
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if (payload & 1)
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boot_page_fill(payload, last | (*p << 0));
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boot_page_fill(payload, last | (*p << 8));
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else
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last = *p;
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payload++;
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}
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if (!(payload & (SPM_PAGESIZE-1))) {
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boot_page_write(payload);
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boot_spm_busy_wait();
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}
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if (!(payload & (SPM_PAGESIZE-1))) {
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boot_page_write(payload-SPM_PAGESIZE);
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boot_spm_busy_wait();
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}
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}
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boot_rww_enable();
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}
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