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segatools-hay1tsme/board/sg-reader.c
Tau bc2928804c board/sg-reader.c: Factor out NFC ass'y emu
Combine the NFC module emulator with the LED module emulator and
a virtual UART to build a higher-level reusable building block.
2019-02-26 13:49:29 -05:00

104 lines
2.3 KiB
C

#include <windows.h>
#include <assert.h>
#include <stdint.h>
#include "board/sg-led.h"
#include "board/sg-nfc.h"
#include "board/sg-reader.h"
#include "hook/iohook.h"
#include "hooklib/uart.h"
#include "util/dprintf.h"
#include "util/dump.h"
static HRESULT sg_reader_handle_irp_locked(
struct sg_reader *reader,
struct irp *irp);
void sg_reader_init(
struct sg_reader *reader,
unsigned int port_no,
const struct sg_nfc_ops *nfc_ops,
const struct sg_led_ops *led_ops,
void *ops_ctx)
{
assert(reader != NULL);
assert(nfc_ops != NULL);
assert(led_ops != NULL);
sg_nfc_init(&reader->nfc, 0x00, nfc_ops, ops_ctx);
sg_led_init(&reader->led, 0x08, led_ops, ops_ctx);
InitializeCriticalSection(&reader->lock);
uart_init(&reader->uart, port_no);
reader->uart.written.bytes = reader->written_bytes;
reader->uart.written.nbytes = sizeof(reader->written_bytes);
reader->uart.readable.bytes = reader->readable_bytes;
reader->uart.readable.nbytes = sizeof(reader->readable_bytes);
}
HRESULT sg_reader_handle_irp(struct sg_reader *reader, struct irp *irp)
{
HRESULT hr;
assert(reader != NULL);
assert(irp != NULL);
if (!uart_match_irp(&reader->uart, irp)) {
return iohook_invoke_next(irp);
}
EnterCriticalSection(&reader->lock);
hr = sg_reader_handle_irp_locked(reader, irp);
LeaveCriticalSection(&reader->lock);
return hr;
}
static HRESULT sg_reader_handle_irp_locked(
struct sg_reader *reader,
struct irp *irp)
{
HRESULT hr;
#if 0
if (irp->op == IRP_OP_WRITE) {
dprintf("WRITE:\n");
dump_const_iobuf(&irp->write);
}
#endif
#if 0
if (irp->op == IRP_OP_READ) {
dprintf("READ:\n");
dump_iobuf(&reader->uart.readable);
}
#endif
hr = uart_handle_irp(&reader->uart, irp);
if (FAILED(hr) || irp->op != IRP_OP_WRITE) {
return hr;
}
sg_nfc_transact(
&reader->nfc,
&reader->uart.readable,
reader->uart.written.bytes,
reader->uart.written.pos);
sg_led_transact(
&reader->led,
&reader->uart.readable,
reader->uart.written.bytes,
reader->uart.written.pos);
reader->uart.written.pos = 0;
return hr;
}