forked from Dniel97/segatools
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/* This is some sort of LCD display found on various cabinets. It is driven
|
|
directly by amdaemon, and it has something to do with displaying the status
|
|
of electronic payments.
|
|
|
|
Part number in schematics is "VFD GP1232A02A FUTABA".
|
|
|
|
Little else about this board is known. Black-holing the RS232 comms that it
|
|
receives seems to be sufficient for the time being. */
|
|
|
|
#include <windows.h>
|
|
|
|
#include <assert.h>
|
|
#include <stdint.h>
|
|
|
|
#include "board/vfd.h"
|
|
|
|
#include "hook/iohook.h"
|
|
|
|
#include "hooklib/uart.h"
|
|
|
|
#include "util/dprintf.h"
|
|
#include "util/dump.h"
|
|
|
|
static HRESULT vfd_handle_irp(struct irp *irp);
|
|
|
|
static struct uart vfd_uart;
|
|
static uint8_t vfd_written[512];
|
|
static uint8_t vfd_readable[512];
|
|
|
|
HRESULT vfd_hook_init(unsigned int port_no)
|
|
{
|
|
uart_init(&vfd_uart, port_no);
|
|
vfd_uart.written.bytes = vfd_written;
|
|
vfd_uart.written.nbytes = sizeof(vfd_written);
|
|
vfd_uart.readable.bytes = vfd_readable;
|
|
vfd_uart.readable.nbytes = sizeof(vfd_readable);
|
|
|
|
return iohook_push_handler(vfd_handle_irp);
|
|
}
|
|
|
|
static HRESULT vfd_handle_irp(struct irp *irp)
|
|
{
|
|
HRESULT hr;
|
|
|
|
assert(irp != NULL);
|
|
|
|
if (!uart_match_irp(&vfd_uart, irp)) {
|
|
return iohook_invoke_next(irp);
|
|
}
|
|
|
|
hr = uart_handle_irp(&vfd_uart, irp);
|
|
|
|
if (FAILED(hr) || irp->op != IRP_OP_WRITE) {
|
|
return hr;
|
|
}
|
|
|
|
dprintf("VFD TX:\n");
|
|
dump(vfd_uart.written.bytes, vfd_uart.written.pos);
|
|
vfd_uart.written.pos = 0;
|
|
|
|
return hr;
|
|
}
|