Hello experts,
I would like to get my mind clear on this.
I am using NRF52833 for our custom board we are using Zephyr RTOS (NCS v1.4.99) and IDE is segger embedded studio.
I am using USBD_CDC driver. I am able to detect the USB power. I want to transfer data via USB. In our board UART provision is not provided. We would like to use USB debug.
I have used this following code. But not able to see the data on screen. What will be the end point Address? My code is below here. Is that right ?
static struct device *dev_usb;
void init_USB(void)
{
int ret;
dev_usb = device_get_binding("CDC_ACM_0");
if (!dev_usb) {
//LOG_ERR("CDC ACM device not found");
return;
}
ret = usb_enable(NULL);
if (ret != 0) {
//LOG_ERR("Failed to enable USB");
return;
}
}
...
{
usb_write(dev_usb, usb_data_buf, 5, NULL);
k_sleep(K_MSEC(1000));
}
...
/**
* @brief Write data to the specified endpoint
*
* Function to write data to the specified endpoint. The supplied
* usb_ep_callback will be called when transmission is done.
*
* @param[in] ep Endpoint address corresponding to the one listed in the
* device configuration table
* @param[in] data Pointer to data to write
* @param[in] data_len Length of data requested to write. This may be zero for
* a zero length status packet.
* @param[out] bytes_ret Bytes written to the EP FIFO. This value may be NULL if
* the application expects all bytes to be written
*
* @return 0 on success, negative errno code on fail
*/
Regards
Sudharsan
