INNER CODE UNIT · C

dfu_dnload

dmitrystu/sboot_stm32 · src/bootloader.c:131

static usbd_respond dfu_dnload(void *buf, size_t blksize) {
    switch(dfu_data.bState) {
    case    USB_DFU_STATE_DFU_DNLOADIDLE:
    case    USB_DFU_STATE_DFU_DNLOADSYNC:
    case    USB_DFU_STATE_DFU_IDLE:
        if (blksize == 0) {
            dfu_data.bState = USB_DFU_STATE_DFU_MANIFESTSYNC;
            return usbd_ack;
        }
        if (blksize > dfu_data.remained) {
            dfu_data.bStatus = USB_DFU_STATUS_ERR_ADDRESS;
            dfu_data.bState = USB_DFU_STATE_DFU_ERROR;
            return usbd_ack;
        }
        aes_decrypt(buf, buf, blksize );
        dfu_data.bStatus = dfu_data.flash(dfu_data.dptr, buf, blksize);

        if (dfu_data.bStatus == USB_DFU_STATUS_OK) {

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