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http: upload: make sure we don't cross flash page boundaries.

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This causes the address pointer to wrap back to the front of the page.
Which results in that the beginnen of the page can have data for the next page.
This commit is contained in:
René van Dorst
2025-10-07 21:19:36 +02:00
parent a59f92a648
commit 928cf1cf58
1 changed files with 12 additions and 4 deletions
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httpd/httpd.c
+12 -4
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@@ -10,6 +10,9 @@
// Upload Firmware to 1M // Upload Firmware to 1M
#define FIRMWARE_UPLOAD_START 0x100000 #define FIRMWARE_UPLOAD_START 0x100000
// SPI FLASH MEMORY PAGE SIZE.
#define FLASHMEM_PAGE_SIZE 0x100
#define CMARK_S 6 #define CMARK_S 6
#pragma codeseg BANK1 #pragma codeseg BANK1
@@ -236,13 +239,18 @@ uint8_t stream_upload(uint16_t bptr)
bindex = 0; bindex = 0;
} }
flash_buf[write_len++] = p[bptr++]; flash_buf[write_len++] = p[bptr++];
if (write_len >= 256) { if (write_len >= FLASHMEM_PAGE_SIZE) {
print_string("len: "); print_short(write_len); write_char(' '); print_string("len: "); print_short(write_len); write_char(' ');
flash_region.addr = uptr; flash_region.addr = uptr;
flash_region.len = write_len; flash_region.len = FLASHMEM_PAGE_SIZE;
flash_write_bytes(flash_buf); flash_write_bytes(flash_buf);
uptr += write_len; uptr += FLASHMEM_PAGE_SIZE;
write_len = 0; write_len -= FLASHMEM_PAGE_SIZE;
// Copy the remaining byte for the next page to the beginning of the buffer.
if (write_len > 0) {
memcpy(flash_buf, flash_buf + FLASHMEM_PAGE_SIZE, write_len);
}
} }
bindex = 0; bindex = 0;
} }