forked from Dniel97/segatools
100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
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#include <windows.h>
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#include <process.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include "chuniio/leddata.h"
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#include "chuniio/serialimpl.h"
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#include "util/dprintf.h"
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static HANDLE serial_port;
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static HANDLE serial_write_mutex;
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HRESULT led_serial_init(wchar_t led_com[12], DWORD baud)
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{
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// Setup the serial communications
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BOOL status;
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serial_port = CreateFileW(led_com,
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GENERIC_READ | GENERIC_WRITE,
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0,
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NULL,
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OPEN_EXISTING,
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0,
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NULL);
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if (serial_port == INVALID_HANDLE_VALUE)
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dprintf("Chunithm Serial LEDs: Failed to open COM port (Attempted on %S)\n", led_com);
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else
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dprintf("Chunithm Serial LEDs: COM port success!\n");
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DCB dcb_serial_params = { 0 };
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dcb_serial_params.DCBlength = sizeof(dcb_serial_params);
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status = GetCommState(serial_port, &dcb_serial_params);
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dcb_serial_params.BaudRate = baud;
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dcb_serial_params.ByteSize = 8;
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dcb_serial_params.StopBits = ONESTOPBIT;
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dcb_serial_params.Parity = NOPARITY;
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SetCommState(serial_port, &dcb_serial_params);
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COMMTIMEOUTS timeouts = { 0 };
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timeouts.ReadIntervalTimeout = 50;
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timeouts.ReadTotalTimeoutConstant = 50;
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timeouts.ReadTotalTimeoutMultiplier = 10;
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timeouts.WriteTotalTimeoutConstant = 50;
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timeouts.WriteTotalTimeoutMultiplier = 10;
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SetCommTimeouts(serial_port, &timeouts);
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if (!status)
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{
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return E_FAIL;
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}
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serial_write_mutex = CreateMutex(
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NULL, // default security attributes
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FALSE, // initially not owned
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NULL); // unnamed mutex
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if (serial_write_mutex == NULL)
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{
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return E_FAIL;
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}
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return S_OK;
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}
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void led_serial_update(struct _chuni_led_data_buf_t* data)
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{
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if (data->board > 2)
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{
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return;
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}
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if (WaitForSingleObject(serial_write_mutex, INFINITE) != WAIT_OBJECT_0)
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{
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return;
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}
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BOOL status = true;
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DWORD bytes_written = 0;
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if (serial_port != INVALID_HANDLE_VALUE) {
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status = WriteFile(
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serial_port,
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data,
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LED_OUTPUT_HEADER_SIZE + data->data_len,
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&bytes_written,
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NULL);
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}
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if (!status) {
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DWORD last_err = GetLastError();
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// dprintf("Chunithm Serial LEDs: Serial port write failed -- %d\n", last_err);
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}
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ReleaseMutex(serial_write_mutex);
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}
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