SceUsbSerial

Module

Known NIDs

Version	Name	World	Privilege	NID
1.69	SceUsbSerial	Non-secure	Kernel	0xF8D9930F
3.60	SceUsbSerial	Non-secure	Kernel	0xB3C543D4

Libraries

Known NIDs

Version	Name	World	Visibility	NID
1.69	SceUsbSerialForDriver	Non-secure	Kernel	0x8829C2F3
3.60	SceUsbSerialForDriver	Non-secure	Kernel	removed
1.69	SceUsbSerial	Non-secure	User	0x2820117D
3.60	SceUsbSerial	Non-secure	User	0x2820117D

SceUsbSerialForDriver

This library does not exist anymore as of FW 3.60.

sceUsbSerialStartForDriver

Version	NID
1.69	0xFEE7F4BA

/**
 * Activate USB serial device
 *
 * @return 0 on success, < 0 on error
 *
 * @note The user is responsible for making sure no other UDC driver is active. This activates UDC as a "PS Vita" Type D device.
 */
int sceUsbSerialStartForDriver(void);

sceUsbSerialSetupForDriver

Version	NID
1.69	0x590B8F97

/**
 * Setup USB serial device
 *
 * @return 0 on success, < 0 on error
 *
 * @param unk Unknown
 */
int sceUsbSerialSetupForDriver(int unk);

sceUsbSerialStatusForDriver

Version	NID
1.69	0x8C426906

/**
 * Get USB device status
 *
 * @return Returns 1 when serial port is open
 */
int sceUsbSerialStatusForDriver(void);

sceUsbSerialCloseForDriver

Version	NID
1.69	0xE6B1E64F

/**
 * Close USB serial device
 */
int sceUsbSerialCloseForDriver(void);

sceUsbSerialGetRecvBufferSizeForDriver

Version	NID
1.69	0xF531B5AE

/**
 * Get receive buffer length
 *
 * @return Returns length of USB rx buffer
 */
unsigned int sceUsbSerialGetRecvBufferSizeForDriver(void);

sceUsbSerialSendForDriver

Version	NID
1.69	0x0C2E73C0

/**
 * Send data
 *
 * @param[in] *buffer data to send over usb
 * @param[in] len int len of serial buffer data
 * @param unk1 Unknown
 * @param unk2 Unknown
 * @note max send length is 0x10000
 */
unsigned int sceUsbSerialSendForDriver(const void *buffer, unsigned int len, int unk1, int unk2);

sceUsbSerialRecvForDriver

Version	NID
1.69	0x6B5E296F

/**
 * Receive Data
 *
 * @param[out] *buffer buffer for incoming data
 * @param[in] max_len max data length to receive
 * @param unk1 Unknown
 * @param unk2 Unknown
 * @note max recv length is 0x10000
 */
unsigned int sceUsbSerialRecvForDriver(void *buffer, unsigned int max_len, int unk1, int unk2);

SceUsbSerial

sceUsbSerialStart

Version	NID
1.69	0xE3BEC18C
3.60	0xE3BEC18C

User wrapper for sceUsbSerialStartForDriver.

Checks sceSblACMgrIsAllowedUsbSerialForDriver.

/**
 * Activate USB serial device
 *
 * @return 0 on success, < 0 on error
 *
 * @note The user is responsible for making sure no other UDC driver is active. This activates UDC as a "PS Vita" Type D device.
 *
 * @note Wrapper for kernel function sceUsbSerialStartForDriver()
 */
int sceUsbSerialStart(void);

int ret = 0;
sceUdcdDeactivateForDriver(a1, a2, a3, (*(uint32_t *)(/*data_81003000*/)) << 0x17);
sceUdcdStopForDriver("USB_MTP_Driver", 0, 0);
sceUdcdStopForDriver("USBDeviceControllerDriver", 0, 0);
ret = sceUdcdStartForDriver("USBDeviceControllerDriver", 0, 0);
if (ret != 0)
    return ret;
ret = sceUdcdStartForDriver("USBSerDriver", 0, 0);
if (ret != 0) {
    sceUdcdStopForDriver("USBSerDriver", 0, 0);
    return ret;
}
ret = sceUdcdActivateForDriver(0x69B);
if (ret != 0) {
    sceUdcdStopForDriver("USBDeviceControllerDriver", 0, 0);
    return ret;
}
return ret;

sceUsbSerialSetup

Version	NID
1.69	0x290E08B4
3.60	0x290E08B4

User wrapper for sceUsbSerialSetupForDriver. Must have correct permissions to call.

/**
 * Setup USB serial device
 *
 * @return 0 on success, < 0 on error
 *
 * @param unk Unknown
 *
 * @note Wrapper for kernel function sceUsbSerialSetupForDriver()
 */
int sceUsbSerialSetup(int unk);

sceUsbSerialStatus

Version	NID
1.69	0xA6A2F5DE
3.60	0xA6A2F5DE

User wrapper for sceUsbSerialStatusForDriver. Must have correct permissions to call.

/**
 * Close USB serial device
 *
 * @return Returns 1 when serial port is open
 *
 * @note Wrapper for kernel function sceUsbSerialStatusForDriver()
 */
int sceUsbSerialStatus(void);

sceUsbSerialClose

Version	NID
1.69	0xF2415853
3.60	0xF2415853

User wrapper for sceUsbSerialCloseForDriver. Must have correct permissions to call.

/**
 * Close USB serial device
 */
int sceUsbSerialClose(void);

sceUdcdDeactivateForDriver(a1, a2, a3, (*(uint32_t *)(/*data_81003000*/)) << 0x1F);
sceUdcdStopForDriver("USBSerDriver", 0, 0);
sceUdcdStopForDriver("USBDeviceControllerDriver", 0, 0);
sceUdcdStartForDriver("USBDeviceControllerDriver", 0, 0);
sceUdcdStartForDriver("USB_MTP_Driver", 0, 0);
sceUdcdActivateForDriver(0x4E4);

sceUsbSerialGetRecvBufferSize

Version	NID
1.69	0xE8567A87
3.60	0xE8567A87

User wrapper for sceUsbSerialGetRecvBufferSizeForDriver. Must have correct permissions to call.

/**
 * Get receive buffer length
 *
 * @return Returns length of USB rx buffer
 */
unsigned int sceUsbSerialGetRecvBufferSize(void);

sceUsbSerialSend

Version	NID
1.69	0x89E71202
3.60	0x89E71202

User wrapper for sceUsbSerialSendForDriver. Must have correct permissions to call. Max length is 0x10000.

/**
 * Send data
 * @param[in] *buffer data to send over usb
 * @param len int len of serial buffer data
 * @param unk1 Unknown
 * @param unk2 Unknown
 * @note len max value is 0x10000
 */
unsigned int sceUsbSerialSend(const void *buffer, unsigned int len, int unk1, int unk2);

sceUsbSerialRecv

Version	NID
1.69	0xF26DC8D8
3.60	0xF26DC8D8

User wrapper for sceUsbSerialRecvForDriver. Must have correct permissions to call. Max length is 0x10000.

/**
 * Receive Data
 *
 * @param[out] *buffer buffer for incoming data
 * @param max_len max data length to receive
 * @param unk1 Unknown
 * @param unk2 Unknown
 * @note max_len max value is 0x10000
 */
unsigned int sceUsbSerialRecv(void *buffer, unsigned int max_len, int unk1, int unk2);

Sample Kernel Usage

int usb_serial_connect(void) {
    int ret;

    ret = sceUsbSerialStatusForDriver();
    printf("sceUsbSerialStatusForDriver: 0x%08X\n", ret);
    if (ret != 0x80244401) {
        printf("already connected\n");
        return 0;
    }

    ret = sceUsbSerialStartForDriver();
    printf("sceUsbSerialStartForDriver: 0x%08X\n", ret);
    ret = sceUsbSerialSetupForDriver(1);
    printf("sceUsbSerialSetupForDriver: 0x%08X\n", ret);

    if (ret == 0x80244403) {
        ret = SceUsbSerialForDriver_0x6AA4EFA4();
        printf("SceUsbSerialForDriver_0x6AA4EFA4: 0x%08X\n", ret);
        ret = sceUsbSerialSetupForDriver(1);
        printf("sceUsbSerialSetupForDriver: 0x%08X\n", ret);
    }

    while (sceUsbSerialStatusForDriver() != 1); // wait for ready

    return 0;
}

int usb_serial_close(void) {
    int ret;

    ret = SceUsbSerialForDriver_0x6AA4EFA4();
    printf("SceUsbSerialForDriver_0x6AA4EFA4: 0x%08X\n", ret);
    ret = sceUsbSerialCloseForDriver();
    printf("sceUsbSerialCloseForDriver: 0x%08X\n", ret);

    return 0;
}

int usb_serial_send(const void *data, unsigned int len) {
    int ret;

    ret = sceUsbSerialSendForDriver(data, len, 0, -1);
    printf("sceUsbSerialSendForDriver: 0x%08X\n");

    return ret;
}

int usb_serial_recv(void *data, unsigned int len) {
    int ret;

    while (sceUsbSerialGetRecvBufferSizeForDriver() < len) {
        if (sceUsbSerialStatusForDriver() != 1)
            return 0;
    }

    ret = sceUsbSerialRecvForDriver(data, len, 0, -1);
    printf("sceUsbSerialRecvForDriver: 0x%08X\n");

    return ret;
}