81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
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/*
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* usb.c
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*
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* Created: 06.10.2013 21:42:35
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* Author: netz
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*/
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#include "config.h"
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#include <stdbool.h>
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#include <string.h>
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#include <stdio.h>
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#include "usb_user_config.h" // USB configuration
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#include "usb_user.h" // USB functions
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#include "usb.h"
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#ifdef USERDEFCONTROLS // see usbconfig.h
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//-----------------------------------------------------------------------------
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// Handle user defined control requests
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// "ucr" contains the data of the control request
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// function has to return "true", if request is handled (otherwise "false")
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bool usb_controlrequest(struct usb_control_request *ucr) {
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#define USER_REQUESTTYPE 0xC3 // a user defined request type (means, no standard request)
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#define USER_REQUESTVERSION 0x01 // a self defined request: get version info
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bool Result;
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const char VersionInfo[ENDPOINT0_SIZE] = {"Version 1.0"};
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Result=false;
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if (ucr->bmRequestType == USER_REQUESTTYPE) {
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// handle the requests (only one defined in this example)
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switch (ucr->bRequest) {
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case USER_REQUESTVERSION: // request for version info)
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usb_txdata_control((uint8_t *)VersionInfo,sizeof(VersionInfo));
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Result=true;
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break;
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}
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}
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return Result; // true means, request is handled
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}
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#endif
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//-----------------------------------------------------------------------------
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// handle of endpoint interrupt for incoming data
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// "datasize" contains the number of bytes in the USB FIFO buffer
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void usb_ep(uint8_t endpoint, uint16_t datasize) {
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#define RXENDPOINT 0x01 // endpoint, used for data transfer host->device (defined in "usb_user_config.h")
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#define TXENDPOINT 0x82 // endpoint, used for data transfer device->host
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#define BUFSIZE 32 // USB FIFO buffer size (see usb_user_config.h at "endpoints")
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char buf[BUFSIZE]; // buffer for received data from host and data to transmit to host
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uint8_t n;
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if (endpoint == RXENDPOINT) { // data from host by our defined data receive endpoint
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n=usb_rxdata(endpoint, (uint8_t *)buf, sizeof(buf)); // read data into buffer
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if (n) { // data read into local buffer
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buf[BUFSIZE-1]=0; // for security: terminate string
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//resi(buf);
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strupr(buf); // upper case string
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// response to host with converted string
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usb_txdata(TXENDPOINT, (uint8_t *)buf, sizeof(buf)); // transfer data to host*/
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}
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}
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}
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void init_usb() {
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usb_init();
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}
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void usb_send(char* text) {
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#define RXENDPOINT 0x01
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#define TXENDPOINT 0x82
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#define ITENDPOINT 0x83
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usb_txdata(TXENDPOINT, (uint8_t *)text, strlen(text));
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}
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uint8_t usb_getstatus() {
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return usb_status();
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}
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uint8_t usb_ready() {
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return usb_is_ready();
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}
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