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usbdfu: Allow for different, but constant flash page sizes

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This commit is contained in:
Uwe Bonnes 2013-01-15 15:20:42 +01:00
parent 1eb9bfc650
commit 313a24b316
1 changed files with 16 additions and 2 deletions
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18
src/platforms/stm32/usbdfu.c
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@ -158,6 +158,13 @@ static u8 usbdfu_getstatus(u32 *bwPollTimeout)
} }
} }
#if defined (STM32_CAN)
#define FLASHBLOCKSIZE 2048
#else
#define FLASHBLOCKSIZE 1024
#endif
static uint32_t last_erased_pages=0xffffffff;
static void static void
usbdfu_getstatus_complete(usbd_device *dev, struct usb_setup_data *req) usbdfu_getstatus_complete(usbd_device *dev, struct usb_setup_data *req)
{ {
@ -175,8 +182,15 @@ usbdfu_getstatus_complete(usbd_device *dev, struct usb_setup_data *req)
return; return;
} }
switch(prog.buf[0]) { switch(prog.buf[0]) {
case CMD_ERASE: case CMD_ERASE: {
flash_erase_page(*(u32*)(prog.buf+1)); u32 page_start = *(u32*)(prog.buf+1);
page_start &= (~(FLASHBLOCKSIZE-1));
if (page_start != last_erased_pages) {
flash_erase_page(page_start);
last_erased_pages = page_start;
}
}
case CMD_SETADDR: case CMD_SETADDR:
prog.addr = *(u32*)(prog.buf+1); prog.addr = *(u32*)(prog.buf+1);
} }