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2
Chapter 2
2-5 RUNNING THE SAMPLE APPLICATION
The first step to integrate the demo application into your application code is to call
App_USBD_Init() . This function is responsible for the following steps:
■
Initializing the USB device stack.
■
Creating and adding a device instance.
■
Creating and adding configurations.
■
Calling USB class-specific application code.
■
Starting the USB device stack.
The App_USBD_Init() function is described in Listing 2-5.
CPU_BOOLEAN App_USBD_Init (void)
{
CPU_INT08U dev_nbr;
CPU_INT08U cfg_hs_nbr;
CPU_INT08U cfg_fs_nbr;
CPU_BOOLEAN ok;
USBD_ERR err;
40
USBD_Init(&err);
if (err!= USBD_ERR_NONE) {
/* $$$$ Handle error. */
return (DEF_FAIL);
}
dev_nbr = USBD_DevAdd(&USBD_DevCfg_<controller>,
&App_USBD_BusFncts,
&USBD_DrvAPI_<controller>,
&USBD_DrvCfg_<controller>,
&USBD_DrvBSP_<board name>,
&err);
if (err != USBD_ERR_NONE) {
/* $$$$ Handle error. */
return (DEF_FAIL);
}
cfg_hs_nbr = USBD_CFG_NBR_NONE;
cfg_fs_nbr = USBD_CFG_NBR_NONE;
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