Question
I'm trying to use CUSTOM_HID_SendReport but pdev->pClassDataCmsit[pdev->classId] is always NULL
I'm trying to implement a custom hid on STM32F4. I'm able to init USB and enumerate the device. but when i try to use the CUSTOM_HID_SendReport It always exits on the ClassId check.
uint8_t USBD_CUSTOM_HID_SendReport(USBD_HandleTypeDef *pdev, uint8_t *report, uint16_t len) {
USBD_CUSTOM_HID_HandleTypeDef *hhid;
if (pdev->pClassDataCmsit[pdev->classId] == NULL) {
return (uint8_t)USBD_FAIL;
}
#ifdef USE_USBD_COMPOSITE
/* Get Endpoint IN address allocated for this class instance */
CUSTOMHIDInEpAdd = USBD_CoreGetEPAdd(pdev, USBD_EP_IN, USBD_EP_TYPE_INTR);
#endif
hhid = (USBD_CUSTOM_HID_HandleTypeDef *)pdev->pClassDataCmsit[pdev->classId];
if (pdev->dev_state == USBD_STATE_CONFIGURED) {
if (hhid->state == CUSTOM_HID_IDLE) {
hhid->state = CUSTOM_HID_BUSY;
(void)USBD_LL_Transmit(pdev, CUSTOMHIDInEpAdd, report, len);
}
else {
return (uint8_t)USBD_BUSY;
}
}
return (uint8_t)USBD_OK;
}