static u16 log_to_host(){
static __xdata u16 sequence_num = 0;
u16 crc = crc16(locked_page, log_block_size,
crc16((u8 *)&(++sequence_num), sizeof(sequence_num), 0));
if(!(cdc_tx(protocol_header, sizeof(protocol_header))
&& cdc_tx((u8 *)&sequence_num, sizeof(sequence_num))
&& (cdc_tx(locked_page, log_block_size) == log_block_size)
&& cdc_tx((u8 *)&crc, sizeof(crc)))){
return 0;
}
return log_block_size;
}
void cdc_polling(){
static __xdata u8 previous_frame_num = 0;
u8 current_frame_num = usb_frame_num & 0xF0; // per 16 frames
u8 read_count;
char buf[CDC_DATA_EP_OUT_PACKET_SIZE + 1];
buf[0] = 'D'; // debug
while(read_count = min(((u8)cdc_rx_size()), sizeof(buf) - 1)){
cdc_rx(buf + 1, read_count);
}
if(previous_frame_num == current_frame_num){
return;
}
previous_frame_num = current_frame_num;
cdc_tx(NULL, 0); // flush
#ifndef CDC_IS_REPLACED_BY_FTDI
/*{
// ResponseAvailable
static const __code u8 buf[] = {
0xA1, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
usb_write(buf, sizeof(buf), CDC_COM_EP_IN);
}*/
{
// SerialState
static const __code u8 buf[] = {
0xA1, 0x20, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00,
0x03, 0x00
};
usb_write(buf, sizeof(buf), CDC_COM_EP_IN);
}
#endif
}