hi,sir,
could you help me to check, here is my problem:
i want to set the GPIO 156 to high,below is my souce code:
DWORD g_gpioaudioenable=156;
DWORD PinMode=1;
DWORD dwMode[2] = {g_gpioaudioenable, GPIO_DIR_OUTPUT};
HANDLE g_hGpio = CreateFile(GPIO_DEVICE_NAME, 0, 0, NULL, 0, 0, NULL);
DEBUGMSG(ZONE_IST, (
L" PinMode is (%d)\r\n",PinMode
));
DeviceIoControl(g_hGpio, IOCTL_GPIO_GETBIT, &g_gpioaudioenable,
sizeof(g_gpioaudioenable), &PinMode, sizeof(PinMode), NULL, NULL
);
DEBUGMSG(ZONE_IST, (
L" init the audio enable pin finished..,PinMode is (%d)\r\n",PinMode
));
DeviceIoControl(g_hGpio, IOCTL_GPIO_SETMODE, &dwMode,
sizeof(dwMode), 0, 0, NULL, NULL
);
DEBUGMSG(ZONE_IST, (L" set the audio pin output..\r\n"));
DeviceIoControl(g_hGpio, IOCTL_GPIO_SETBIT, &g_gpioaudioenable,
sizeof(DWORD), NULL, 0, NULL, NULL
);
DeviceIoControl(g_hGpio, IOCTL_GPIO_GETBIT, &g_gpioaudioenable,
sizeof(g_gpioaudioenable), &PinMode, sizeof(PinMode), NULL, NULL
);
DEBUGMSG(ZONE_IST, (
L" init the audio enable pin finished..,PinMode is (%d)\r\n",PinMode
));
and ,the debug message is :
PinMode is (1)
init the audio enable pin finished..,PinMode is (0)
set the audio pin output..
init the audio enable pin finished..,PinMode is (0)
so, after the IOCTL_GPIO_SETBIT command ,it seems that the pinmode is not set to high,could you help me to check?
