Revision 6030b995
Bootloader code test
| scout_avr/bom/bootloader.c | ||
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| 3 | 3 |
#include <avr/pgmspace.h> |
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#include "tiny-twi-sync.h" |
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uint32_t current_page; |
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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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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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|
| ... | ... | |
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SREG = sreg; |
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} |
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static void bom_pgrm(uint8_t *buf, int len) {
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if (len == SPM_PAGESIZE) {
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if (current_page == 0) {
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uint16_t w = 0xC000 | ((START_ADDR >> 1) - 1); |
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buf[0] = w & 0xFF; |
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buf[1] = (w >> 16) & 0xFF; |
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} |
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boot_program_page(current_page, buf); |
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current_page++; |
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} |
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} |
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static void slave_rx(uint8_t *buf, int len) {
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if (len > 1) {
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switch (buf[0]) {
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case BOM_I2C_PGRM: |
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bom_pgrm(buf+1, len-1); |
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break; |
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case BOM_I2C_STRT: |
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strt_pgrm(); //yolo |
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break; |
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} |
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} |
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} |
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int main() {
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return 0; |
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} |
| scout_avr/bom/bootloader.h | ||
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| 1 | 1 |
#ifndef BOOTLOADER_H |
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#define BOOTLOADER_H |
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#define BOM_I2C_PGRM 30 |
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#define BOM_I2C_STRT 31 |
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#define START_ADDR 0xA00 |
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#define strt_pgrm ((void (*)(void)) _VECTORS_SIZE) |
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void boot_program_page (uint32_t page, uint8_t *buf); |
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#endif |
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