USB device stack

Dependents:   USBMSD_step1 USBMSD_step1_5 picossd_step1_2cs

Revision:
71:53949e6131f6
diff -r 2c525a50f1b6 -r 53949e6131f6 targets/TARGET_RENESAS/USBHAL_RZ_A1H.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_RENESAS/USBHAL_RZ_A1H.cpp	Thu Jul 27 12:14:04 2017 +0100
@@ -0,0 +1,1497 @@
+/* Copyright (c) 2010-2011 mbed.org, MIT License
+*
+* Permission is hereby granted, free of charge, to any person
+* obtaining a copy of this software and associated documentation
+* files (the "Software"), to deal in the Software without
+* restriction, including without limitation the rights to use,
+* copy, modify, merge, publish, distribute, sublicense, and/or
+* sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following
+* conditions:
+*
+* The above copyright notice and this permission notice shall be
+* included in all copies or substantial portions of the
+* Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+* KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+* WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+* PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#if defined(TARGET_RZ_A1H) || defined(TARGET_VK_RZ_A1H)
+
+/*
+  This class can use the pipe1, pipe3 and pipe6 only. You should
+  re-program this class if you wanted to use other pipe.
+ */
+
+/*************************************************************************/
+extern "C"
+{
+#include "r_typedefs.h"
+#include "iodefine.h"
+}
+#include "USBHAL.h"
+#include "devdrv_usb_function_api.h"
+#include "usb_iobitmask.h"
+#include "rza_io_regrw.h"
+#include "USBDevice_Types.h"
+#include "usb_function_setting.h"
+
+
+/*************************************************************************/
+/* constants */
+const struct PIPECFGREC {
+    uint16_t    endpoint;
+    uint16_t    pipesel;
+    uint16_t    pipecfg;
+    uint16_t    pipebuf;
+    uint16_t    pipemaxp;
+    uint16_t    pipeperi;
+} def_pipecfg[] = {
+    /*EP0OUT and EP0IN are configured by USB IP*/
+    {
+        EP1OUT, /*EP1: Host -> Func, INT*/
+        6 | USB_FUNCTION_D0FIFO_USE,
+        USB_FUNCTION_INTERRUPT |
+        USB_FUNCTION_BFREOFF   |
+        USB_FUNCTION_DBLBOFF   |
+        USB_FUNCTION_CNTMDON   |
+        USB_FUNCTION_SHTNAKOFF |
+        USB_FUNCTION_DIR_P_OUT |
+        USB_FUNCTION_EP1,
+        ( ( (  64) / 64 - 1 ) << 10 ) | 0x04u,
+        MAX_PACKET_SIZE_EP1,
+        DEVDRV_USBF_OFF |
+        ( 3 << USB_PIPEPERI_IITV_SHIFT ),
+    },
+    {
+        EP1IN,  /*EP1: Host <- Func, INT*/
+        7 | USB_FUNCTION_D1FIFO_USE,
+        USB_FUNCTION_INTERRUPT |
+        USB_FUNCTION_BFREOFF   |
+        USB_FUNCTION_DBLBOFF   |
+        USB_FUNCTION_CNTMDOFF  |
+        USB_FUNCTION_SHTNAKOFF |
+        USB_FUNCTION_DIR_P_IN  |
+        USB_FUNCTION_EP1,
+        ( ( (  64) / 64 - 1 ) << 10 ) | 0x05u,
+        MAX_PACKET_SIZE_EP1,
+        DEVDRV_USBF_OFF |
+        ( 3 << USB_PIPEPERI_IITV_SHIFT ),
+    },
+    {
+        EP2OUT, /*EP2: Host -> Func, BULK*/
+        3 | USB_FUNCTION_D0FIFO_USE,
+        USB_FUNCTION_BULK      |
+        USB_FUNCTION_BFREOFF   |
+        USB_FUNCTION_DBLBON    |
+        USB_FUNCTION_CNTMDON   |
+        USB_FUNCTION_SHTNAKON  |
+        USB_FUNCTION_DIR_P_OUT |
+        USB_FUNCTION_EP2,
+        ( ( (2048) / 64 - 1 ) << 10 ) | 0x30u,
+        MAX_PACKET_SIZE_EP2,
+        DEVDRV_USBF_OFF |
+        ( 0 << USB_PIPEPERI_IITV_SHIFT ),
+    },
+    {
+        EP2IN,  /*EP2: Host <- Func, BULK*/
+        4 | USB_FUNCTION_D1FIFO_USE,
+        USB_FUNCTION_BULK      |
+        USB_FUNCTION_BFREOFF   |
+        USB_FUNCTION_DBLBOFF   |
+        USB_FUNCTION_CNTMDON   |
+        USB_FUNCTION_SHTNAKOFF |
+        USB_FUNCTION_DIR_P_IN  |
+        USB_FUNCTION_EP2,
+        ( ( (2048) / 64 - 1 ) << 10 ) | 0x50u,
+        MAX_PACKET_SIZE_EP2,
+        DEVDRV_USBF_OFF |
+        ( 0 << USB_PIPEPERI_IITV_SHIFT ),
+    },
+    {
+        EP3OUT, /*EP3: Host -> Func, ISO*/
+        1 | USB_FUNCTION_D0FIFO_USE,
+        USB_FUNCTION_ISO       |
+        USB_FUNCTION_BFREOFF   |
+        USB_FUNCTION_DBLBON    |
+        USB_FUNCTION_CNTMDOFF  |
+        USB_FUNCTION_SHTNAKON  |
+        USB_FUNCTION_DIR_P_OUT |
+        USB_FUNCTION_EP3,
+        ( ( ( 512) / 64 - 1 ) << 10 ) | 0x10u,
+        MAX_PACKET_SIZE_EP3,
+        DEVDRV_USBF_OFF |
+        ( 0 << USB_PIPEPERI_IITV_SHIFT ),
+    },
+    {
+        EP3IN,  /*EP3: Host <- Func, ISO*/
+        2 | USB_FUNCTION_D1FIFO_USE,
+        USB_FUNCTION_ISO       |
+        USB_FUNCTION_BFREOFF   |
+        USB_FUNCTION_DBLBON    |
+        USB_FUNCTION_CNTMDOFF  |
+        USB_FUNCTION_SHTNAKOFF |
+        USB_FUNCTION_DIR_P_IN  |
+        USB_FUNCTION_EP3,
+        ( ( ( 512) / 64 - 1 ) << 10 ) | 0x20u,
+        MAX_PACKET_SIZE_EP3,
+        DEVDRV_USBF_OFF |
+        ( 0 << USB_PIPEPERI_IITV_SHIFT ),
+    },
+    { /*terminator*/
+        0, 0, 0, 0, 0,
+    },
+};
+
+
+/*************************************************************************/
+/* workareas */
+USBHAL * USBHAL::instance;
+
+static IRQn_Type    int_id;         /* interrupt ID          */
+static uint16_t     int_level;      /* initerrupt level      */
+static uint16_t     clock_mode;     /* input clock selector  */
+static uint16_t     mode;           /* USB speed (HIGH/FULL) */
+
+//static DigitalOut *usbx_en;
+
+static uint16_t     EP0_read_status;
+static uint16_t     EPx_read_status;
+
+static uint16_t setup_buffer[MAX_PACKET_SIZE_EP0 / 2];
+
+/* 0: not used / other: a pipe number to use recv_buffer*/
+static uint8_t  recv_buffer[MAX_PACKET_SIZE_EPBULK];
+volatile static uint16_t    recv_error;
+
+
+/*************************************************************************/
+/* prototypes for C */
+extern "C" {
+    void usbx_function_BRDYInterruptPIPE0 (uint16_t status, uint16_t intenb,
+        USBHAL *object, void (USBHAL::*EP0func)(void));
+
+    void usbx_function_BRDYInterrupt (uint16_t status, uint16_t intenb,
+        USBHAL *object, bool (USBHAL::*epCallback[])(void));
+
+    void usbx_function_NRDYInterruptPIPE0(uint16_t status, uint16_t intenb,
+        USBHAL *object, void (USBHAL::*EP0func)(void));
+
+    void usbx_function_NRDYInterrupt (uint16_t status, uint16_t intenb,
+        USBHAL *object, bool (USBHAL::*epCallback[])(void));
+
+    void usbx_function_BEMPInterruptPIPE0(uint16_t status, uint16_t intenb,
+        USBHAL *object, void (USBHAL::*EP0func)(void));
+
+    void usbx_function_BEMPInterrupt (uint16_t status, uint16_t intenb,
+        USBHAL *object, bool (USBHAL::*epCallback[])(void));
+}
+
+
+/*************************************************************************/
+/* macros */
+
+/******************************************************************************
+ * Function Name: usbx_function_BRDYInterruptPIPE0
+ * Description  : Executes BRDY interrupt for pipe0.
+ * Arguments    : uint16_t status       ; BRDYSTS Register Value
+ *              : uint16_t intenb       ; BRDYENB Register Value
+ * Return Value : none
+ *****************************************************************************/
+extern "C" {
+    void usbx_function_BRDYInterruptPIPE0 (
+        uint16_t status,
+        uint16_t intenb,
+        USBHAL *object,
+        void (USBHAL::*EP0func)(void)
+    )
+    {
+        volatile uint16_t dumy_sts;
+        uint16_t read_status;
+
+        USB20X.BRDYSTS =
+            (uint16_t)~g_usbx_function_bit_set[USB_FUNCTION_PIPE0];
+        RZA_IO_RegWrite_16(
+            &USB20X.CFIFOSEL, USB_FUNCTION_PIPE0,
+            USB_CFIFOSEL_CURPIPE_SHIFT, USB_CFIFOSEL_CURPIPE);
+
+        g_usbx_function_PipeDataSize[USB_FUNCTION_PIPE0] =
+            g_usbx_function_data_count[USB_FUNCTION_PIPE0];
+
+        read_status = usbx_function_read_buffer_c(USB_FUNCTION_PIPE0);
+
+        g_usbx_function_PipeDataSize[USB_FUNCTION_PIPE0] -=
+            g_usbx_function_data_count[USB_FUNCTION_PIPE0];
+
+        switch (read_status) {
+            case USB_FUNCTION_READING:      /* Continue of data read */
+            case USB_FUNCTION_READEND:      /* End of data read */
+                /* PID = BUF */
+                usbx_function_set_pid_buf(USB_FUNCTION_PIPE0);
+
+                /*callback*/
+                (object->*EP0func)();
+                break;
+
+            case USB_FUNCTION_READSHRT:     /* End of data read */
+                usbx_function_disable_brdy_int(USB_FUNCTION_PIPE0);
+                /* PID = BUF */
+                usbx_function_set_pid_buf(USB_FUNCTION_PIPE0);
+
+                /*callback*/
+                (object->*EP0func)();
+                break;
+
+            case USB_FUNCTION_READOVER:     /* FIFO access error */
+                /* Buffer Clear */
+                USB20X.CFIFOCTR = USB_FUNCTION_BITBCLR;
+                usbx_function_disable_brdy_int(USB_FUNCTION_PIPE0);
+                /* Req Error */
+                usbx_function_set_pid_stall(USB_FUNCTION_PIPE0);
+
+                /*callback*/
+                (object->*EP0func)();
+                break;
+
+            case DEVDRV_USBF_FIFOERROR:     /* FIFO access error */
+            default:
+                usbx_function_disable_brdy_int(USB_FUNCTION_PIPE0);
+                /* Req Error */
+                usbx_function_set_pid_stall(USB_FUNCTION_PIPE0);
+                break;
+        }
+        /* Three dummy reads for clearing interrupt requests */
+        dumy_sts = USB20X.BRDYSTS;
+    }
+}
+
+
+/******************************************************************************
+ * Function Name: usbx_function_BRDYInterrupt
+ * Description  : Executes BRDY interrupt uxclude pipe0.
+ * Arguments    : uint16_t status       ; BRDYSTS Register Value
+ *              : uint16_t intenb       ; BRDYENB Register Value
+ * Return Value : none
+ *****************************************************************************/
+extern "C" {
+    void usbx_function_BRDYInterrupt(
+        uint16_t status,
+        uint16_t intenb,
+        USBHAL *object,
+        bool (USBHAL::*epCallback[])(void)
+    )
+    {
+        volatile uint16_t dumy_sts;
+
+        /**************************************************************
+         * Function Name: usbx_function_brdy_int
+         * Description  : Executes BRDY interrupt(USB_FUNCTION_PIPE1-9).
+         *              : According to the pipe that interrupt is generated in,
+         *              : reads/writes buffer allocated in the pipe.
+         *              : This function is executed in the BRDY
+         *              : interrupt handler.  This function
+         *              : clears BRDY interrupt status and BEMP
+         *              : interrupt status.
+         * Arguments    : uint16_t Status    ; BRDYSTS Register Value
+         *              : uint16_t Int_enbl  ; BRDYENB Register Value
+         * Return Value : none
+         *************************************************************/
+        /* copied from usbx_function_intrn.c */
+        uint32_t int_sense = 0;
+        uint16_t pipe;
+        uint16_t pipebit;
+        uint16_t ep;
+
+        for (pipe = USB_FUNCTION_PIPE1; pipe <= USB_FUNCTION_MAX_PIPE_NO; pipe++) {
+            pipebit = g_usbx_function_bit_set[pipe];
+
+            if ((status & pipebit) && (intenb & pipebit)) {
+                USB20X.BRDYSTS = (uint16_t)~pipebit;
+                USB20X.BEMPSTS = (uint16_t)~pipebit;
+
+                switch (g_usbx_function_PipeTbl[pipe] & USB_FUNCTION_FIFO_USE) {
+                    case USB_FUNCTION_D0FIFO_DMA:
+                        if (g_usbx_function_DmaStatus[USB_FUNCTION_D0FIFO] != USB_FUNCTION_DMA_READY) {
+                            /*now, DMA is not supported*/
+                            usbx_function_dma_interrupt_d0fifo(int_sense);
+                        }
+
+                        if (RZA_IO_RegRead_16(
+                                &g_usbx_function_pipecfg[pipe], USB_PIPECFG_BFRE_SHIFT, USB_PIPECFG_BFRE) == 0) {
+                            /*now, DMA is not supported*/
+                            usbx_function_read_dma(pipe);
+                            usbx_function_disable_brdy_int(pipe);
+                        } else {
+                            USB20X.D0FIFOCTR = USB_FUNCTION_BITBCLR;
+                            g_usbx_function_pipe_status[pipe] = DEVDRV_USBF_PIPE_DONE;
+                        }
+                        break;
+
+                    case USB_FUNCTION_D1FIFO_DMA:
+                        if (g_usbx_function_DmaStatus[USB_FUNCTION_D1FIFO] != USB_FUNCTION_DMA_READY) {
+                            /*now, DMA is not supported*/
+                            usbx_function_dma_interrupt_d1fifo(int_sense);
+                        }
+
+                        if (RZA_IO_RegRead_16(
+                                &g_usbx_function_pipecfg[pipe], USB_PIPECFG_BFRE_SHIFT, USB_PIPECFG_BFRE) == 0) {
+                            /*now, DMA is not supported*/
+                            usbx_function_read_dma(pipe);
+                            usbx_function_disable_brdy_int(pipe);
+                        } else {
+                            USB20X.D1FIFOCTR = USB_FUNCTION_BITBCLR;
+                            g_usbx_function_pipe_status[pipe] = DEVDRV_USBF_PIPE_DONE;
+                        }
+                        break;
+
+                    default:
+                        ep = (g_usbx_function_pipecfg[pipe] & USB_PIPECFG_EPNUM) >> USB_PIPECFG_EPNUM_SHIFT;
+                        ep <<= 1;
+                        if (RZA_IO_RegRead_16(
+                                &g_usbx_function_pipecfg[pipe], USB_PIPECFG_DIR_SHIFT, USB_PIPECFG_DIR) == 0) {
+                            /* read */
+                            EPx_read_status = DEVDRV_USBF_PIPE_WAIT;
+                            (object->*(epCallback[ep - 2])) ();
+                            EPx_read_status = DEVDRV_USBF_PIPE_DONE;
+                        } else {
+                            /* write */
+                            EPx_read_status = DEVDRV_USBF_PIPE_WAIT;
+                            (object->*(epCallback[ep - 2 + 1])) ();
+                            EPx_read_status = DEVDRV_USBF_PIPE_DONE;
+                            usbx_function_write_buffer(pipe);
+                        }
+                }
+            }
+        }
+        /* Three dummy reads for clearing interrupt requests */
+        dumy_sts = USB20X.BRDYSTS;
+    }
+}
+
+
+/******************************************************************************
+ * Function Name: usbx_function_NRDYInterruptPIPE0
+ * Description  : Executes NRDY interrupt for pipe0.
+ * Arguments    : uint16_t status       ; NRDYSTS Register Value
+ *              : uint16_t intenb       ; NRDYENB Register Value
+ * Return Value : none
+ *****************************************************************************/
+extern "C" {
+    void usbx_function_NRDYInterruptPIPE0(
+        uint16_t status,
+        uint16_t intenb,
+        USBHAL *object,
+        void (USBHAL::*EP0func)(void)
+    )
+    {
+        volatile uint16_t dumy_sts;
+
+        USB20X.NRDYSTS =
+            (uint16_t)~g_usbx_function_bit_set[USB_FUNCTION_PIPE0];
+
+        /* Three dummy reads for clearing interrupt requests */
+        dumy_sts = USB20X.NRDYSTS;
+    }
+}
+
+
+/******************************************************************************
+ * Function Name: usbx_function_NRDYInterrupt
+ * Description  : Executes NRDY interrupt exclude pipe0.
+ * Arguments    : uint16_t status       ; NRDYSTS Register Value
+ *              : uint16_t intenb       ; NRDYENB Register Value
+ * Return Value : none
+ *****************************************************************************/
+extern "C" {
+    void usbx_function_NRDYInterrupt(
+        uint16_t status,
+        uint16_t intenb,
+        USBHAL *object,
+        bool (USBHAL::*epCallback[])(void)
+    )
+    {
+        volatile uint16_t dumy_sts;
+
+        /**************************************************************
+         * Function Name: usbx_function_nrdy_int
+         * Description  : Executes NRDY interrupt(USB_FUNCTION_PIPE1-9).
+         *              : Checks NRDY interrupt cause by PID. When the cause if STALL,
+         *              : regards the pipe state as STALL and ends the processing.
+         *              : Then the cause is not STALL, increments the error count to
+         *              : communicate again. When the error count is 3, determines
+         *              : the pipe state as DEVDRV_USBF_PIPE_NORES and ends the processing.
+         *              : This function is executed in the NRDY interrupt handler.
+         *              : This function clears NRDY interrupt status.
+         * Arguments    : uint16_t status       ; NRDYSTS Register Value
+         *              : uint16_t int_enb      ; NRDYENB Register Value
+         * Return Value : none
+         *************************************************************/
+        /* copied from usbx_function_intrn.c */
+#if 0
+        uint16_t usefifo;
+#endif
+        uint16_t pid;
+        uint16_t pipe;
+        uint16_t bitcheck;
+#if 0
+        uint16_t mbw;
+        uint32_t size;
+#endif
+        uint16_t ep;
+
+        bitcheck = (uint16_t)(status & intenb);
+
+        USB20X.NRDYSTS = (uint16_t)~status;
+
+
+        if (RZA_IO_RegRead_16(&USB20X.SYSCFG0, USB_SYSCFG_DCFM_SHIFT, USB_SYSCFG_DCFM) == 1) {
+            /* USB HOST */
+            /* not support */
+
+        } else {
+            /* USB Function */
+            for (pipe = USB_FUNCTION_PIPE1; pipe <= USB_FUNCTION_MAX_PIPE_NO; pipe++) {
+                if ((bitcheck&g_usbx_function_bit_set[pipe]) != g_usbx_function_bit_set[pipe]) {
+                    continue;
+                }
+
+                if (g_usbx_function_pipe_status[pipe] != DEVDRV_USBF_PIPE_WAIT) {
+                    continue;
+                }
+
+#if 0
+                usbx_function_set_pid_nak(pipe);
+
+                size = (uint32_t)g_usbx_function_data_count[pipe];
+                mbw = usbx_function_get_mbw(
+                    size, (uint32_t)g_usbx_function_data_pointer[pipe]);
+
+                usefifo = (uint16_t)(g_usbx_function_PipeTbl[pipe] & USB_FUNCTION_FIFO_USE);
+                switch (usefifo) {
+
+                    case USB_FUNCTION_D0FIFO_USE:
+                        usbx_function_set_curpipe(
+                            pipe, USB_FUNCTION_D0USE, DEVDRV_USBF_NO, mbw);
+                        USB20X.D0FIFOCTR = USB_FUNCTION_BITBCLR;
+                        break;
+
+                    case USB_FUNCTION_D1FIFO_USE:
+                        usbx_function_set_curpipe(
+                            pipe, USB_FUNCTION_D1USE, DEVDRV_USBF_NO, mbw);
+                        USB20X.D1FIFOCTR = USB_FUNCTION_BITBCLR;
+                        break;
+
+                    default:
+                        usbx_function_set_curpipe(
+                            pipe, USB_FUNCTION_CUSE, USB_FUNCTION_CFIFO_READ, mbw);
+                        USB20X.CFIFOCTR = USB_FUNCTION_BITBCLR;
+                        break;
+                }
+
+                usbx_function_aclrm(pipe);
+
+                usbx_function_enable_nrdy_int(pipe);
+                usbx_function_enable_brdy_int(pipe);
+
+                usbx_function_set_pid_buf(pipe);
+#endif
+
+                pid = usbx_function_get_pid(pipe);
+                if ((pid == DEVDRV_USBF_PID_STALL) || (pid == DEVDRV_USBF_PID_STALL2)) {
+                    g_usbx_function_pipe_status[pipe] = DEVDRV_USBF_PIPE_STALL;
+                } else {
+                    usbx_function_set_pid_buf(pipe);
+                }
+
+                ep = (g_usbx_function_pipecfg[pipe] & USB_PIPECFG_EPNUM) >> USB_PIPECFG_EPNUM_SHIFT;
+                ep <<= 1;
+                if (RZA_IO_RegRead_16(
+                        &g_usbx_function_pipecfg[pipe], USB_PIPECFG_DIR_SHIFT, USB_PIPECFG_DIR) == 0) {
+                    /* read */
+                    __NOP();
+                } else {
+                    /* write */
+                    __NOP();
+                }
+            }
+        }
+
+        /* Three dummy reads for clearing interrupt requests */
+        dumy_sts = USB20X.NRDYSTS;
+    }
+}
+
+/******************************************************************************
+ * Function Name: usbx_function_BEMPInterruptPIPE0
+ * Description  : Executes BEMP interrupt for pipe0.
+ * Arguments    : uint16_t status       ; BEMPSTS Register Value
+ *              : uint16_t intenb       ; BEMPENB Register Value
+ * Return Value : none
+ *****************************************************************************/
+extern "C" {
+    void usbx_function_BEMPInterruptPIPE0(
+        uint16_t status,
+        uint16_t intenb,
+        USBHAL *object,
+        void (USBHAL::*EP0func)(void)
+    )
+    {
+        volatile uint16_t dumy_sts;
+
+        USB20X.BEMPSTS =
+            (uint16_t)~g_usbx_function_bit_set[USB_FUNCTION_PIPE0];
+        RZA_IO_RegWrite_16(
+            &USB20X.CFIFOSEL, USB_FUNCTION_PIPE0,
+            USB_CFIFOSEL_CURPIPE_SHIFT, USB_CFIFOSEL_CURPIPE);
+
+        /*usbx_function_write_buffer_c(USB_FUNCTION_PIPE0);*/
+        (object->*EP0func)();
+
+        /* Three dummy reads for clearing interrupt requests */
+        dumy_sts = USB20X.BEMPSTS;
+    }
+}
+
+
+/******************************************************************************
+ * Function Name: usbx_function_BEMPInterrupt
+ * Description  : Executes BEMP interrupt exclude pipe0.
+ * Arguments    : uint16_t status       ; BEMPSTS Register Value
+ *              : uint16_t intenb       ; BEMPENB Register Value
+ * Return Value : none
+ *****************************************************************************/
+extern "C" {
+    void usbx_function_BEMPInterrupt(
+        uint16_t status,
+        uint16_t intenb,
+        USBHAL *object,
+        bool (USBHAL::*epCallback[])(void)
+    )
+    {
+        volatile uint16_t dumy_sts;
+
+        /**************************************************************
+         * Function Name: usbx_function_bemp_int
+         * Description  : Executes BEMP interrupt(USB_FUNCTION_PIPE1-9).
+         * Arguments    : uint16_t status       ; BEMPSTS Register Value
+         *              : uint16_t intenb      ; BEMPENB Register Value
+         * Return Value : none
+         *************************************************************/
+        /* copied from usbx_function_intrn.c */
+        uint16_t pid;
+        uint16_t pipe;
+        uint16_t bitcheck;
+        uint16_t inbuf;
+        uint16_t ep;
+
+        bitcheck = (uint16_t)(status & intenb);
+
+        USB20X.BEMPSTS = (uint16_t)~status;
+
+        for (pipe = USB_FUNCTION_PIPE1; pipe <= USB_FUNCTION_MAX_PIPE_NO; pipe++) {
+            if ((bitcheck&g_usbx_function_bit_set[pipe]) != g_usbx_function_bit_set[pipe]) {
+                continue;
+            }
+
+            pid = usbx_function_get_pid(pipe);
+
+            if ((pid == DEVDRV_USBF_PID_STALL) ||
+                (pid == DEVDRV_USBF_PID_STALL2)) {
+                g_usbx_function_pipe_status[pipe] = DEVDRV_USBF_PIPE_STALL;
+
+            } else {
+                inbuf = usbx_function_get_inbuf(pipe);
+
+                if (inbuf == 0) {
+                    usbx_function_disable_bemp_int(pipe);
+                    usbx_function_set_pid_nak(pipe);
+                    g_usbx_function_pipe_status[pipe] = DEVDRV_USBF_PIPE_DONE;
+
+                    switch (g_usbx_function_PipeTbl[pipe] & USB_FUNCTION_FIFO_USE) {
+                        case USB_FUNCTION_D0FIFO_DMA:
+                            /*now, DMA is not supported*/
+                            break;
+
+                        case USB_FUNCTION_D1FIFO_DMA:
+                            /*now, DMA is not supported*/
+                            break;
+
+                        default:
+                            ep = (g_usbx_function_pipecfg[pipe] & USB_PIPECFG_EPNUM) >> USB_PIPECFG_EPNUM_SHIFT;
+                            ep <<= 1;
+                            if (RZA_IO_RegRead_16(
+                                    &g_usbx_function_pipecfg[pipe], USB_PIPECFG_DIR_SHIFT, USB_PIPECFG_DIR) == 0) {
+                                /* read */
+                                __NOP();
+                            } else {
+                                /* write */
+                                EPx_read_status = DEVDRV_USBF_PIPE_WAIT;
+                                (object->*(epCallback[ep - 2 + 1])) ();
+                                EPx_read_status = DEVDRV_USBF_PIPE_DONE;
+                            }
+                    }
+                }
+            }
+        }
+
+        /* Three dummy reads for clearing interrupt requests */
+        dumy_sts = USB20X.BEMPSTS;
+    }
+}
+
+/******************************************************************************
+ * Function Name: EP2PIPE
+ * Description  : Converts from endpoint to pipe
+ * Arguments    : number of endpoint
+ * Return Value : number of pipe
+ *****************************************************************************/
+/*EP2PIPE converter is for pipe1, pipe3 and pipe6 only.*/
+#define EP2PIPE(endpoint)   ((uint32_t)usbx_function_EpToPipe(endpoint))
+
+
+/******************************************************************************
+ * Function Name: usbx_function_save_request
+ * Description  : Retains the USB request information in variables.
+ * Arguments    : none
+ * Return Value : none
+ *****************************************************************************/
+#define  usbx_function_save_request()                       \
+    {                                                       \
+        uint16_t *bufO = &setup_buffer[0];                  \
+                                                            \
+        USB20X.INTSTS0 = (uint16_t)~USB_FUNCTION_BITVALID;  \
+        /*data[0] <= bmRequest, data[1] <= bmRequestType */ \
+        *bufO++ = USB20X.USBREQ;                            \
+        /*data[2] data[3] <= wValue*/                       \
+        *bufO++ = USB20X.USBVAL;                            \
+        /*data[4] data[5] <= wIndex*/                       \
+        *bufO++ = USB20X.USBINDX;                           \
+        /*data[6] data[6] <= wIndex*/                       \
+        *bufO++ = USB20X.USBLENG;                           \
+    }
+
+
+/*************************************************************************/
+/*************************************************************************/
+/*************************************************************************/
+
+/*************************************************************************/
+/* constructor */
+USBHAL::USBHAL(void)
+{
+    /* ---- P4_1 : P4_1 (USB0_EN for GR-PEACH) ---- */
+    //usbx_en = new DigitalOut(P4_1, 1);
+
+    /* some constants */
+    int_id          = USBIX_IRQn;
+    int_level       = ( 2 << 3 );
+    clock_mode      = USBFCLOCK_X1_48MHZ;
+#if (USB_FUNCTION_HISPEED == 0)
+    mode            = USB_FUNCTION_FULL_SPEED;
+#else
+    mode            = USB_FUNCTION_HIGH_SPEED;
+#endif
+    EP0_read_status = DEVDRV_USBF_WRITEEND;
+    EPx_read_status = DEVDRV_USBF_PIPE_DONE;
+
+    /* Disables interrupt for usb */
+    GIC_DisableIRQ(int_id);
+
+    /* Setup the end point */
+    epCallback[ 0] = &USBHAL::EP1_OUT_callback;
+    epCallback[ 1] = &USBHAL::EP1_IN_callback;
+    epCallback[ 2] = &USBHAL::EP2_OUT_callback;
+    epCallback[ 3] = &USBHAL::EP2_IN_callback;
+    epCallback[ 4] = &USBHAL::EP3_OUT_callback;
+    epCallback[ 5] = &USBHAL::EP3_IN_callback;
+    epCallback[ 6] = &USBHAL::EP4_OUT_callback;
+    epCallback[ 7] = &USBHAL::EP4_IN_callback;
+    epCallback[ 8] = &USBHAL::EP5_OUT_callback;
+    epCallback[ 9] = &USBHAL::EP5_IN_callback;
+    epCallback[10] = &USBHAL::EP6_OUT_callback;
+    epCallback[11] = &USBHAL::EP6_IN_callback;
+    epCallback[12] = &USBHAL::EP7_OUT_callback;
+    epCallback[13] = &USBHAL::EP7_IN_callback;
+    epCallback[14] = &USBHAL::EP8_OUT_callback;
+    epCallback[15] = &USBHAL::EP8_IN_callback;
+    epCallback[16] = &USBHAL::EP9_OUT_callback;
+    epCallback[17] = &USBHAL::EP9_IN_callback;
+    epCallback[18] = &USBHAL::EP10_OUT_callback;
+    epCallback[19] = &USBHAL::EP10_IN_callback;
+    epCallback[20] = &USBHAL::EP11_OUT_callback;
+    epCallback[21] = &USBHAL::EP11_IN_callback;
+    epCallback[22] = &USBHAL::EP12_OUT_callback;
+    epCallback[23] = &USBHAL::EP12_IN_callback;
+    epCallback[24] = &USBHAL::EP13_OUT_callback;
+    epCallback[25] = &USBHAL::EP13_IN_callback;
+    epCallback[26] = &USBHAL::EP14_OUT_callback;
+    epCallback[27] = &USBHAL::EP14_IN_callback;
+    epCallback[28] = &USBHAL::EP15_OUT_callback;
+    epCallback[29] = &USBHAL::EP15_IN_callback;
+
+    /* registers me */
+    instance = this;
+
+    /* Clear pipe table */
+    usbx_function_clear_pipe_tbl();
+
+/******************************************************************************
+ * Function Name: usbx_api_function_init
+ * Description  : Initializes the USB module in the USB function mode.
+ *****************************************************************************/
+    /* The clock of USB0 modules is permitted */
+#if (USB_FUNCTION_CH == 0)
+    CPG.STBCR7 &= ~(CPG_STBCR7_MSTP71);
+#else
+    CPG.STBCR7 &= ~(CPG_STBCR7_MSTP71 | CPG_STBCR7_MSTP70);
+#endif
+    volatile uint8_t    dummy8;
+    dummy8 = CPG.STBCR7;
+
+    {
+/******************************************************************************
+ * Function Name: usbx_function_setting_interrupt
+ * Description  : Sets the USB module interrupt level.
+ *****************************************************************************/
+#if 0   /*DMA is not supported*/
+        IRQn_Type d0fifo_dmaintid;
+        IRQn_Type d1fifo_dmaintid;
+#endif
+
+        InterruptHandlerRegister(int_id, &_usbisr);
+        GIC_SetPriority(int_id, int_level);
+        GIC_EnableIRQ(int_id);
+
+#if 0   /*DMA is not supported*/
+        d0fifo_dmaintid = Userdef_USB_usbx_function_d0fifo_dmaintid();
+        if (d0fifo_dmaintid != 0xFFFF) {
+            InterruptHandlerRegister(d0fifo_dmaintid, usbx_function_dma_interrupt_d0fifo);
+            GIC_SetPriority(d0fifo_dmaintid, int_level);
+            GIC_EnableIRQ(d0fifo_dmaintid);
+        }
+#endif
+
+#if 0   /*DMA is not supported*/
+        d1fifo_dmaintid = Userdef_USB_usbx_function_d1fifo_dmaintid();
+        if (d1fifo_dmaintid != 0xFFFF) {
+            InterruptHandlerRegister(d1fifo_dmaintid, usbx_function_dma_interrupt_d1fifo);
+            GIC_SetPriority(d1fifo_dmaintid, int_level);
+            GIC_EnableIRQ(d1fifo_dmaintid);
+        }
+#endif
+/*****************************************************************************/
+    }
+
+    /* reset USB module with setting tranciever and HSE=1 */
+    usbx_function_reset_module(clock_mode);
+
+    /* clear variables */
+    usbx_function_init_status();
+
+    /* select USB Function and Interrupt Enable */
+    /* Detect USB Device to attach or detach    */
+    usbx_function_InitModule(mode);
+
+    {
+        uint16_t buf;
+        buf  = USB20X.INTENB0;
+        buf |= USB_INTENB0_SOFE;
+        USB20X.INTENB0 = buf;
+    }
+}
+
+/*************************************************************************/
+USBHAL::~USBHAL(void)
+{
+    /* Disables interrupt for usb */
+    GIC_DisableIRQ( int_id );
+    /* Unregisters interrupt function and priority */
+    InterruptHandlerRegister( int_id, (uint32_t)NULL );
+
+    //usbx_en  = NULL;
+    instance = NULL;
+}
+
+/*************************************************************************/
+void USBHAL::connect(void)
+{
+    /* Activates USB0_EN */
+    //(*usbx_en) = 0;
+}
+
+
+/*************************************************************************/
+void USBHAL::disconnect(void)
+{
+    /* Deactivates USB0_EN */
+    //(*usbx_en) = 1;
+}
+
+
+/*************************************************************************/
+void USBHAL::configureDevice(void)
+{
+    /*The pipes set up in USBHAL::realiseEndpoint*/
+    /*usbx_function_clear_alt();*/      /* Alternate setting clear */
+    /*usbx_function_set_pid_buf(USB_FUNCTION_PIPE0);*/
+}
+
+
+/*************************************************************************/
+void USBHAL::unconfigureDevice(void)
+{
+    /* The Interface would be managed by USBDevice */
+    /*usbx_function_clear_alt();*/      /* Alternate setting clear */
+    /*usbx_function_set_pid_buf(USB_FUNCTION_PIPE0);*/
+}
+
+
+/*************************************************************************/
+void USBHAL::setAddress(uint8_t address)
+{
+    if (address <= 127) {
+        usbx_function_set_pid_buf(USB_FUNCTION_PIPE0);      /* OK */
+    } else {
+        usbx_function_set_pid_stall(USB_FUNCTION_PIPE0);    /* Not Spec */
+    }
+}
+
+
+/*************************************************************************/
+bool USBHAL::realiseEndpoint(uint8_t endpoint, uint32_t maxPacket, uint32_t flags)
+{
+    const struct PIPECFGREC *cfg;
+    uint16_t pipe;
+    uint16_t buf;
+
+    if ( (EP0OUT == endpoint) || (EP0IN  == endpoint) ) {
+        return true;
+    }
+
+    for (cfg = &def_pipecfg[0]; cfg->pipesel != 0; cfg++) {
+        if (cfg->endpoint == endpoint) {
+            break;
+        }
+    }
+    if (cfg->pipesel == 0) {
+        return false;
+    }
+
+    pipe = ((cfg->pipesel & USB_PIPESEL_PIPESEL) >> USB_PIPESEL_PIPESEL_SHIFT);
+
+    g_usbx_function_PipeTbl[ pipe ] = (uint16_t)(endpoint | ((cfg->pipesel & USB_FUNCTION_FIFO_USE) << 0));
+
+    /* There are maintenance routine of SHTNAK and BFRE bits
+     * in original sample program. This sample is not
+     * programmed. Do maintenance the "def_pipecfg" array if
+     * you want it. */
+
+    /* Interrupt Disable */
+    buf  = USB20X.BRDYENB;
+    buf &= (uint16_t)~g_usbx_function_bit_set[pipe];
+    USB20X.BRDYENB = buf;
+    buf  = USB20X.NRDYENB;
+    buf &= (uint16_t)~g_usbx_function_bit_set[pipe];
+    USB20X.NRDYENB = buf;
+    buf  = USB20X.BEMPENB;
+    buf &= (uint16_t)~g_usbx_function_bit_set[pipe];
+    USB20X.BEMPENB = buf;
+
+    usbx_function_set_pid_nak(pipe);
+
+    /* CurrentPIPE Clear */
+    if (RZA_IO_RegRead_16(&USB20X.CFIFOSEL, USB_CFIFOSEL_CURPIPE_SHIFT, USB_CFIFOSEL_CURPIPE) == pipe) {
+        RZA_IO_RegWrite_16(&USB20X.CFIFOSEL, 0, USB_CFIFOSEL_CURPIPE_SHIFT, USB_CFIFOSEL_CURPIPE);
+    }
+
+    if (RZA_IO_RegRead_16(&USB20X.D0FIFOSEL, USB_DnFIFOSEL_CURPIPE_SHIFT, USB_DnFIFOSEL_CURPIPE) == pipe) {
+        RZA_IO_RegWrite_16(&USB20X.D0FIFOSEL, 0, USB_DnFIFOSEL_CURPIPE_SHIFT, USB_DnFIFOSEL_CURPIPE);
+    }
+
+    if (RZA_IO_RegRead_16(&USB20X.D1FIFOSEL, USB_DnFIFOSEL_CURPIPE_SHIFT, USB_DnFIFOSEL_CURPIPE) == pipe) {
+        RZA_IO_RegWrite_16(&USB20X.D1FIFOSEL, 0, USB_DnFIFOSEL_CURPIPE_SHIFT, USB_DnFIFOSEL_CURPIPE);
+    }
+
+    /* PIPE Configuration */
+    USB20X.PIPESEL  = pipe;
+    USB20X.PIPECFG  = cfg->pipecfg;
+    USB20X.PIPEBUF  = cfg->pipebuf;
+    USB20X.PIPEMAXP = cfg->pipemaxp;
+    USB20X.PIPEPERI = cfg->pipeperi;
+
+    g_usbx_function_pipecfg[pipe]  = cfg->pipecfg;
+    g_usbx_function_pipebuf[pipe]  = cfg->pipebuf;
+    g_usbx_function_pipemaxp[pipe] = cfg->pipemaxp;
+    g_usbx_function_pipeperi[pipe] = cfg->pipeperi;
+
+    /* Buffer Clear */
+    usbx_function_set_sqclr(pipe);
+    usbx_function_aclrm(pipe);
+
+    /* init Global */
+    g_usbx_function_pipe_status[pipe]  = DEVDRV_USBF_PIPE_IDLE;
+    g_usbx_function_PipeDataSize[pipe] = 0;
+
+    return true;
+}
+
+
+/*************************************************************************/
+// read setup packet
+void USBHAL::EP0setup(uint8_t *buffer)
+{
+    memcpy(buffer, setup_buffer, MAX_PACKET_SIZE_EP0);
+}
+
+
+/*************************************************************************/
+void USBHAL::EP0readStage(void)
+{
+    // No implements
+}
+
+
+/*************************************************************************/
+void USBHAL::EP0read(void)
+{
+    uint8_t *buffer;
+    uint32_t size;
+
+    /* remain of last writing */
+    while (EP0_read_status != DEVDRV_USBF_WRITEEND) {
+        static uint8_t bbb[2] = { 255, 255 };
+        EP0write(&bbb[0], 0);
+    }
+
+    buffer = (uint8_t*)(&setup_buffer[4]);
+    size   = (MAX_PACKET_SIZE_EP0 / 2) - 8;
+    usbx_api_function_CtrlWriteStart(size, buffer);
+}
+
+
+/*************************************************************************/
+uint32_t USBHAL::EP0getReadResult(uint8_t *buffer)
+{
+    memcpy(buffer, (uint8_t*)(&setup_buffer[4]), g_usbx_function_PipeDataSize[USB_FUNCTION_PIPE0]);
+
+    return g_usbx_function_PipeDataSize[USB_FUNCTION_PIPE0];
+}
+
+
+/*************************************************************************/
+void USBHAL::EP0write(uint8_t *buffer, uint32_t size)
+{
+    /* zero byte writing */
+    if ( (size == 0) && (EP0_read_status == DEVDRV_USBF_WRITEEND) ) {
+        return;
+    }
+
+    if (EP0_read_status == DEVDRV_USBF_WRITEEND) {
+        /*1st block*/
+        EP0_read_status = usbx_api_function_CtrlReadStart(size, buffer);
+    } else {
+        /* waits the last transmission */
+        /*other blocks*/
+        g_usbx_function_data_count[ USB_FUNCTION_PIPE0 ]    = size;
+        g_usbx_function_data_pointer [ USB_FUNCTION_PIPE0 ] = buffer;
+        EP0_read_status = usbx_function_write_buffer_c(USB_FUNCTION_PIPE0);
+    }
+    /*max size may be deblocking outside*/
+    if (size == MAX_PACKET_SIZE_EP0) {
+        EP0_read_status = DEVDRV_USBF_WRITING;
+    }
+}
+
+
+/*************************************************************************/
+#if 0   // No implements
+void USBHAL::EP0getWriteResult(void)
+{
+}
+#endif
+
+/*************************************************************************/
+void USBHAL::EP0stall(void)
+{
+    stallEndpoint( 0 );
+}
+
+
+/*************************************************************************/
+EP_STATUS USBHAL::endpointRead(uint8_t endpoint, uint32_t max_size)
+{
+    uint32_t    pipe = EP2PIPE(endpoint);
+    uint32_t    pipe_size;
+    uint16_t    pipe_status;
+    EP_STATUS status = EP_COMPLETED;
+
+    pipe_status = usbx_api_function_check_pipe_status(pipe, &pipe_size);
+
+    switch (pipe_status) {
+        case DEVDRV_USBF_PIPE_IDLE:
+        case DEVDRV_USBF_PIPE_WAIT:
+            usbx_api_function_set_pid_nak(pipe);
+            usbx_api_function_clear_pipe_status(pipe);
+
+            usbx_api_function_start_receive_transfer(pipe, max_size, recv_buffer);
+            break;
+
+        default:
+            status = EP_PENDING;
+            break;
+    }
+
+    return status;
+}
+
+
+/*************************************************************************/
+EP_STATUS USBHAL::endpointReadResult(uint8_t endpoint, uint8_t *buffer, uint32_t *bytes_read )
+{
+    uint32_t pipe = EP2PIPE(endpoint);
+    uint16_t pipe_status;
+    uint16_t err;
+    EP_STATUS status = EP_PENDING;
+
+
+    if (EPx_read_status != DEVDRV_USBF_PIPE_WAIT) {
+        return status;
+    }
+
+    pipe_status = usbx_api_function_check_pipe_status(pipe, bytes_read);
+    switch (pipe_status) {
+        case DEVDRV_USBF_PIPE_IDLE:
+            return EP_COMPLETED;
+
+        case DEVDRV_USBF_PIPE_DONE:
+            return EP_COMPLETED;
+
+        case DEVDRV_USBF_PIPE_WAIT:
+            break;
+
+        default:
+            return status;
+    }
+
+    /* sets the output buffer and size */
+    g_usbx_function_data_pointer[pipe] = buffer;
+
+    /* receives data from pipe */
+    err = usbx_function_read_buffer(pipe);
+    recv_error = err;
+    switch (err) {
+        case USB_FUNCTION_READEND:
+        case USB_FUNCTION_READSHRT:
+        case USB_FUNCTION_READOVER:
+            *bytes_read = g_usbx_function_PipeDataSize[pipe];
+            break;
+
+        case USB_FUNCTION_READING:
+        case DEVDRV_USBF_FIFOERROR:
+            break;
+    }
+
+    pipe_status = usbx_api_function_check_pipe_status(pipe, bytes_read);
+    switch (pipe_status) {
+        case DEVDRV_USBF_PIPE_DONE:
+            status = EP_COMPLETED;
+            break;
+
+        case DEVDRV_USBF_PIPE_IDLE:
+        case DEVDRV_USBF_PIPE_NORES:
+        case DEVDRV_USBF_PIPE_STALL:
+        case DEVDRV_USBF_FIFOERROR:
+        default:
+            break;
+    }
+
+    return status;
+}
+
+
+/*************************************************************************/
+EP_STATUS USBHAL::endpointWrite(uint8_t endpoint, uint8_t *data, uint32_t size)
+{
+    uint32_t pipe = EP2PIPE(endpoint);
+    uint32_t pipe_size;
+    uint16_t pipe_status;
+    uint16_t err;
+    uint16_t count;
+    EP_STATUS status = EP_PENDING;
+
+    pipe_status = usbx_api_function_check_pipe_status(pipe, &pipe_size);
+
+    /* waits the last transmission */
+    count = 30000;
+    while ((pipe_status == DEVDRV_USBF_PIPE_WAIT) || (pipe_status == DEVDRV_USBF_PIPE_DONE)) {
+        pipe_status = usbx_api_function_check_pipe_status(pipe, &pipe_size);
+        if( --count == 0 ) {
+            pipe_status = DEVDRV_USBF_PIPE_STALL;
+            break;
+        }
+    }
+
+    switch (pipe_status) {
+        case DEVDRV_USBF_PIPE_IDLE:
+            err = usbx_api_function_start_send_transfer(pipe, size, data);
+
+            switch (err) {
+                    /* finish to write */
+                case DEVDRV_USBF_WRITEEND:
+                    /* finish to write, but data is short */
+                case DEVDRV_USBF_WRITESHRT:
+                    /* continue to write */
+                case DEVDRV_USBF_WRITING:
+                    /* use DMA */
+                case DEVDRV_USBF_WRITEDMA:
+                    /* error */
+                case DEVDRV_USBF_FIFOERROR:
+                    status = EP_PENDING;
+                    break;
+            }
+            break;
+
+        case DEVDRV_USBF_PIPE_WAIT:
+        case DEVDRV_USBF_PIPE_DONE:
+            status = EP_PENDING;
+            break;
+
+        case DEVDRV_USBF_PIPE_NORES:
+        case DEVDRV_USBF_PIPE_STALL:
+        default:
+            status = EP_STALLED;
+            break;
+    }
+
+    return status;
+}
+
+
+/*************************************************************************/
+EP_STATUS USBHAL::endpointWriteResult(uint8_t endpoint)
+{
+    uint32_t    pipe = EP2PIPE(endpoint);
+    uint32_t    pipe_size;
+    uint16_t    pipe_status;
+    EP_STATUS status = EP_PENDING;
+
+    pipe_status = usbx_api_function_check_pipe_status(pipe, &pipe_size);
+
+    switch (pipe_status) {
+        case DEVDRV_USBF_PIPE_IDLE:
+            status = EP_COMPLETED;
+            break;
+
+        case DEVDRV_USBF_PIPE_WAIT:
+            status = EP_PENDING;
+            break;
+
+        case DEVDRV_USBF_PIPE_DONE:
+            usbx_function_stop_transfer(pipe);
+            status = EP_COMPLETED;
+            break;
+
+        case DEVDRV_USBF_PIPE_NORES:
+            status = EP_STALLED;
+            break;
+
+        case DEVDRV_USBF_PIPE_STALL:
+            status = EP_STALLED;
+            break;
+
+        default:
+            status = EP_PENDING;
+    }
+
+    return status;
+}
+
+
+/*************************************************************************/
+void USBHAL::stallEndpoint(uint8_t endpoint)
+{
+    uint32_t pipe = EP2PIPE(endpoint);
+
+    usbx_function_clear_pid_stall(pipe);
+}
+
+
+/*************************************************************************/
+void USBHAL::unstallEndpoint(uint8_t endpoint)
+{
+    uint32_t pipe = EP2PIPE(endpoint);
+
+    usbx_function_set_pid_stall( pipe );
+}
+
+
+/*************************************************************************/
+bool USBHAL::getEndpointStallState(uint8_t endpoint)
+{
+    // No implemens
+    return false;
+}
+
+
+/*************************************************************************/
+#if 0   // No implements
+void USBHAL::remoteWakeup(void)
+{
+}
+#endif
+
+/*************************************************************************/
+void USBHAL::_usbisr(void)
+{
+    instance->usbisr();
+}
+
+
+/*************************************************************************/
+void USBHAL::usbisr(void)
+{
+    uint16_t            int_sts0;
+    uint16_t            int_sts1;
+    uint16_t            int_sts2;
+    uint16_t            int_sts3;
+    uint16_t            int_enb0;
+    uint16_t            int_enb2;
+    uint16_t            int_enb3;
+    uint16_t            int_enb4;
+    volatile uint16_t   dumy_sts;
+
+
+    int_sts0 = USB20X.INTSTS0;
+
+    if (!(int_sts0 & (
+                USB_FUNCTION_BITVBINT |
+                USB_FUNCTION_BITRESM  |
+                USB_FUNCTION_BITSOFR  |
+                USB_FUNCTION_BITDVST  |
+                USB_FUNCTION_BITCTRT  |
+                USB_FUNCTION_BITBEMP  |
+                USB_FUNCTION_BITNRDY  |
+                USB_FUNCTION_BITBRDY ))) {
+        return;
+    }
+
+    int_sts1 = USB20X.BRDYSTS;
+    int_sts2 = USB20X.NRDYSTS;
+    int_sts3 = USB20X.BEMPSTS;
+    int_enb0 = USB20X.INTENB0;
+    int_enb2 = USB20X.BRDYENB;
+    int_enb3 = USB20X.NRDYENB;
+    int_enb4 = USB20X.BEMPENB;
+
+    if ((int_sts0 & USB_FUNCTION_BITRESM) &&
+            (int_enb0 & USB_FUNCTION_BITRSME)) {
+        USB20X.INTSTS0 = (uint16_t)~USB_FUNCTION_BITRESM;
+        RZA_IO_RegWrite_16(&USB20X.INTENB0, 0, USB_INTENB0_RSME_SHIFT, USB_INTENB0_RSME);
+        /*usbx_function_USB_FUNCTION_Resume();*/
+        suspendStateChanged(1);
+    } else if (
+        (int_sts0 & USB_FUNCTION_BITVBINT) &&
+        (int_enb0 & USB_FUNCTION_BITVBSE)) {
+        USB20X.INTSTS0 = (uint16_t)~USB_FUNCTION_BITVBINT;
+
+        if (usbx_function_CheckVBUStaus() == DEVDRV_USBF_ON) {
+            usbx_function_USB_FUNCTION_Attach();
+        } else {
+            usbx_function_USB_FUNCTION_Detach();
+        }
+    } else if (
+        (int_sts0 & USB_FUNCTION_BITSOFR) &&
+        (int_enb0 & USB_FUNCTION_BITSOFE)) {
+        USB20X.INTSTS0 = (uint16_t)~USB_FUNCTION_BITSOFR;
+        SOF((USB20X.FRMNUM & USB_FRMNUM_FRNM) >> USB_FRMNUM_FRNM_SHIFT);
+    } else if (
+        (int_sts0 & USB_FUNCTION_BITDVST) &&
+        (int_enb0 & USB_FUNCTION_BITDVSE)) {
+        USB20X.INTSTS0 = (uint16_t)~USB_FUNCTION_BITDVST;
+        switch (int_sts0 & USB_FUNCTION_BITDVSQ) {
+            case USB_FUNCTION_DS_POWR:
+                break;
+
+            case USB_FUNCTION_DS_DFLT:
+                /*****************************************************************************
+                 * Function Name: usbx_function_USB_FUNCTION_BusReset
+                 * Description  : This function is executed when the USB device is transitioned
+                 *              : to POWERD_STATE. Sets the device descriptor according to the
+                 *              : connection speed determined by the USB reset hand shake.
+                 * Arguments    : none
+                 * Return Value : none
+                 *****************************************************************************/
+                usbx_function_init_status();            /* memory clear */
+
+#if 0
+                /* You would program those steps in USBCallback_busReset
+                 * if the system need the comment out steps.
+                 */
+
+                if (usbx_function_is_hispeed() == USB_FUNCTION_HIGH_SPEED) {
+                    /* Device Descriptor reset */
+                    usbx_function_ResetDescriptor(USB_FUNCTION_HIGH_SPEED);
+                } else {
+                    /* Device Descriptor reset */
+                    usbx_function_ResetDescriptor(USB_FUNCTION_FULL_SPEED);
+                }
+#endif
+                /* Default Control PIPE reset */
+                /*****************************************************************************
+                 * Function Name: usbx_function_ResetDCP
+                 * Description  : Initializes the default control pipe(DCP).
+                 * Outline      : Reset default control pipe
+                 * Arguments    : none
+                 * Return Value : none
+                 *****************************************************************************/
+                USB20X.DCPCFG  = 0;
+                USB20X.DCPMAXP = 64;    /*TODO: This value is copied from sample*/
+
+                USB20X.CFIFOSEL  = (uint16_t)(USB_FUNCTION_BITMBW_8 | USB_FUNCTION_BITBYTE_LITTLE);
+                USB20X.D0FIFOSEL = (uint16_t)(USB_FUNCTION_BITMBW_8 | USB_FUNCTION_BITBYTE_LITTLE);
+                USB20X.D1FIFOSEL = (uint16_t)(USB_FUNCTION_BITMBW_8 | USB_FUNCTION_BITBYTE_LITTLE);
+
+                busReset();
+                break;
+
+            case USB_FUNCTION_DS_ADDS:
+                break;
+
+            case USB_FUNCTION_DS_CNFG:
+                break;
+
+            case USB_FUNCTION_DS_SPD_POWR:
+            case USB_FUNCTION_DS_SPD_DFLT:
+            case USB_FUNCTION_DS_SPD_ADDR:
+            case USB_FUNCTION_DS_SPD_CNFG:
+                suspendStateChanged(0);
+                /*usbx_function_USB_FUNCTION_Suspend();*/
+                break;
+
+            default:
+                break;
+        }
+    } else if (
+        (int_sts0 & USB_FUNCTION_BITBEMP) &&
+        (int_enb0 & USB_FUNCTION_BITBEMP) &&
+        ((int_sts3 & int_enb4) & g_usbx_function_bit_set[USB_FUNCTION_PIPE0])) {
+        /* ==== BEMP PIPE0 ==== */
+        usbx_function_BEMPInterruptPIPE0(int_sts3, int_enb4, this, &USBHAL::EP0in);
+    } else if (
+        (int_sts0 & USB_FUNCTION_BITBRDY) &&
+        (int_enb0 & USB_FUNCTION_BITBRDY) &&
+        ((int_sts1 & int_enb2) & g_usbx_function_bit_set[USB_FUNCTION_PIPE0])) {
+        /* ==== BRDY PIPE0 ==== */
+        usbx_function_BRDYInterruptPIPE0(int_sts1, int_enb2, this, &USBHAL::EP0out);
+    } else if (
+        (int_sts0 & USB_FUNCTION_BITNRDY) &&
+        (int_enb0 & USB_FUNCTION_BITNRDY) &&
+        ((int_sts2 & int_enb3) & g_usbx_function_bit_set[USB_FUNCTION_PIPE0])) {
+        /* ==== NRDY PIPE0 ==== */
+        usbx_function_NRDYInterruptPIPE0(int_sts2, int_enb3, this, NULL);
+    } else if (
+        (int_sts0 & USB_FUNCTION_BITCTRT) && (int_enb0 & USB_FUNCTION_BITCTRE)) {
+        int_sts0 = USB20X.INTSTS0;
+        USB20X.INTSTS0 = (uint16_t)~USB_FUNCTION_BITCTRT;
+
+        if (((int_sts0 & USB_FUNCTION_BITCTSQ) == USB_FUNCTION_CS_RDDS) ||
+                ((int_sts0 & USB_FUNCTION_BITCTSQ) == USB_FUNCTION_CS_WRDS) ||
+                ((int_sts0 & USB_FUNCTION_BITCTSQ) == USB_FUNCTION_CS_WRND)) {
+
+            /* remake EP0 into buffer */
+            usbx_function_save_request();
+            if ((USB20X.INTSTS0 & USB_FUNCTION_BITVALID) && (
+                        ((int_sts0 & USB_FUNCTION_BITCTSQ) == USB_FUNCTION_CS_RDDS) ||
+                        ((int_sts0 & USB_FUNCTION_BITCTSQ) == USB_FUNCTION_CS_WRDS) ||
+                        ((int_sts0 & USB_FUNCTION_BITCTSQ) == USB_FUNCTION_CS_WRND))) {
+                /* New SETUP token received */
+                /* Three dummy reads for cleearing interrupt requests */
+                dumy_sts = USB20X.INTSTS0;
+                dumy_sts = USB20X.INTSTS0;
+                dumy_sts = USB20X.INTSTS0;
+                return;
+            }
+        }
+
+        switch (int_sts0 & USB_FUNCTION_BITCTSQ) {
+            case USB_FUNCTION_CS_IDST:
+                if (g_usbx_function_TestModeFlag == DEVDRV_USBF_YES) {
+                    /* ==== Test Mode ==== */
+                    usbx_function_USB_FUNCTION_TestMode();
+                }
+                /* Needs not procedure in this state */
+                break;
+
+            case USB_FUNCTION_CS_RDDS:
+                /* Reads a setup packet */
+                EP0setupCallback();
+                break;
+
+            case USB_FUNCTION_CS_WRDS:
+                /* Original code was the SetDescriptor was called */
+                EP0setupCallback();
+                break;
+
+            case USB_FUNCTION_CS_WRND:
+                EP0setupCallback();
+
+                /*The EP0setupCallback should finish in successful */
+                usbx_function_set_pid_buf(USB_FUNCTION_PIPE0);
+
+                RZA_IO_RegWrite_16(&USB20X.DCPCTR, 1, USB_DCPCTR_CCPL_SHIFT, USB_DCPCTR_CCPL);
+                break;
+
+            case USB_FUNCTION_CS_RDSS:
+                RZA_IO_RegWrite_16(&USB20X.DCPCTR, 1, USB_DCPCTR_CCPL_SHIFT, USB_DCPCTR_CCPL);
+                break;
+
+            case USB_FUNCTION_CS_WRSS:
+                RZA_IO_RegWrite_16(&USB20X.DCPCTR, 1, USB_DCPCTR_CCPL_SHIFT, USB_DCPCTR_CCPL);
+                break;
+
+            case USB_FUNCTION_CS_SQER:
+                usbx_function_set_pid_stall(USB_FUNCTION_PIPE0);
+                break;
+
+            default:
+                usbx_function_set_pid_stall(USB_FUNCTION_PIPE0);
+                break;
+        }
+    } else if (
+        (int_sts0 & USB_FUNCTION_BITBEMP) &&
+        (int_enb0 & USB_FUNCTION_BITBEMP) &&
+        (int_sts3 & int_enb4) ) {
+        /* ==== BEMP PIPEx ==== */
+        usbx_function_BEMPInterrupt(int_sts3, int_enb4, this, epCallback);
+    } else if (
+        (int_sts0 & USB_FUNCTION_BITBRDY) &&
+        (int_enb0 & USB_FUNCTION_BITBRDY) &&
+        (int_sts1 & int_enb2) ) {
+        /* ==== BRDY PIPEx ==== */
+        usbx_function_BRDYInterrupt(int_sts1, int_enb2, this, epCallback);
+    } else if (
+        (int_sts0 & USB_FUNCTION_BITNRDY) &&
+        (int_enb0 & USB_FUNCTION_BITNRDY) &&
+        (int_sts2 & int_enb3)) {
+        /* ==== NRDY PIPEx ==== */
+        usbx_function_NRDYInterrupt(int_sts2, int_enb3, this, epCallback);
+    } else {
+        /* Do Nothing */
+    }
+
+    /* Three dummy reads for cleearing interrupt requests */
+    dumy_sts = USB20X.INTSTS0;
+    dumy_sts = USB20X.INTSTS1;
+}
+
+/*************************************************************************/
+#endif
+/*************************************************************************/
+/*EOF*/