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134 lines
3.6 KiB
C
134 lines
3.6 KiB
C
/*
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* Code generated from Atmel Start.
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*
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* This file will be overwritten when reconfiguring your Atmel Start project.
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* Please copy examples or other code you want to keep to a separate file or main.c
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* to avoid loosing it when reconfiguring.
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*/
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#include "atmel_start.h"
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#include "usb_start.h"
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static volatile bool b_usb_ready = false;
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#if CONF_USBD_HS_SP
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static uint8_t single_desc_bytes[] = {
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/* Device descriptors and Configuration descriptors list. */
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CDCD_ACM_HS_DESCES_LS_FS};
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static uint8_t single_desc_bytes_hs[] = {
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/* Device descriptors and Configuration descriptors list. */
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CDCD_ACM_HS_DESCES_HS};
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#define CDCD_ECHO_BUF_SIZ CONF_USB_CDCD_ACM_DATA_BULKIN_MAXPKSZ_HS
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#else
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static uint8_t single_desc_bytes[] = {
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/* Device descriptors and Configuration descriptors list. */
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CDCD_ACM_DESCES_LS_FS};
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#define CDCD_ECHO_BUF_SIZ CONF_USB_CDCD_ACM_DATA_BULKIN_MAXPKSZ
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#endif
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static struct usbd_descriptors single_desc[]
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= {{single_desc_bytes, single_desc_bytes + sizeof(single_desc_bytes)}
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#if CONF_USBD_HS_SP
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,
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{single_desc_bytes_hs, single_desc_bytes_hs + sizeof(single_desc_bytes_hs)}
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#endif
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};
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/** Buffers to receive and echo the communication bytes. */
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static uint32_t usbd_cdc_buffer[CDCD_ECHO_BUF_SIZ / 4];
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/** Ctrl endpoint buffer */
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static uint8_t ctrl_buffer[64];
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/**
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* \brief Callback invoked when bulk OUT data received
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*/
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static bool usb_device_cb_bulk_out(const uint8_t ep, const enum usb_xfer_code rc, const uint32_t count)
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{
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cdcdf_acm_write((uint8_t *)usbd_cdc_buffer, count);
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/* No error. */
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return false;
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}
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/**
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* \brief Callback invoked when bulk IN data received
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*/
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static bool usb_device_cb_bulk_in(const uint8_t ep, const enum usb_xfer_code rc, const uint32_t count)
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{
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/* Echo data. */
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cdcdf_acm_read((uint8_t *)usbd_cdc_buffer, sizeof(usbd_cdc_buffer));
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/* No error. */
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return false;
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}
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/**
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* \brief Callback invoked when Line State Change
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*/
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static bool usb_device_cb_state_c(usb_cdc_control_signal_t state)
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{
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b_usb_ready = true;
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/* if (state.rs232.DTR) { */
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/* /\* Callbacks must be registered after endpoint allocation *\/ */
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/* cdcdf_acm_register_callback(CDCDF_ACM_CB_READ, (FUNC_PTR)usb_device_cb_bulk_out); */
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/* cdcdf_acm_register_callback(CDCDF_ACM_CB_WRITE, (FUNC_PTR)usb_device_cb_bulk_in); */
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/* /\* Start Rx *\/ */
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/* static uint8_t arr[64]; */
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/* memset(arr, '\0', 64); */
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/* memcpy(arr, "Hello World\n", sizeof("Hello World\n")); */
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/* volatile int32_t ret = cdcdf_acm_write((uint8_t*)arr, sizeof("Hello World\n")); */
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/* // cdcdf_acm_read((uint8_t *)usbd_cdc_buffer, sizeof(usbd_cdc_buffer)); */
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/* } */
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/* else if(state.rs232.RTS) */
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/* { */
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/* asm volatile("nop"); */
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/* } */
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/* No error. */
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return false;
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}
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/**
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* \brief CDC ACM Init
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*/
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void cdc_device_acm_init(void)
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{
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/* usb stack init */
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usbdc_init(ctrl_buffer);
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/* usbdc_register_funcion inside */
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cdcdf_acm_init();
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usbdc_start(single_desc);
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usbdc_attach();
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}
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/**
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* Example of using CDC ACM Function.
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* \note
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* In this example, we will use a PC as a USB host:
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* - Connect the DEBUG USB on XPLAINED board to PC for program download.
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* - Connect the TARGET USB on XPLAINED board to PC for running program.
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* The application will behave as a virtual COM.
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* - Open a HyperTerminal or other COM tools in PC side.
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* - Send out a character or string and it will echo the content received.
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*/
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void cdcd_acm_example(void)
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{
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while (!cdcdf_acm_is_enabled()) {
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// wait cdc acm to be installed
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};
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cdcdf_acm_register_callback(CDCDF_ACM_CB_STATE_C, (FUNC_PTR)usb_device_cb_state_c);
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}
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void usb_init(void)
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{
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cdc_device_acm_init();
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}
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bool usb_ready()
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{
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return b_usb_ready;
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}
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