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Added USB (specifically CDC-ACM) support

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This commit is contained in:
ksb 2007-09-01 10:00:35 +00:00
parent 3af69d229a
commit 9d5a2aed80
18 changed files with 2079 additions and 4 deletions
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83
cpu/at91sam7s/usb/cdc-acm.c Normal file
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#include <cdc-acm.h>
#include <cdc.h>
#include <usb-proto.h>
#include <stdio.h>
static unsigned int
handle_cdc_acm_requests()
{
printf("CDC request %02x %02x\n", usb_setup_buffer.bmRequestType, usb_setup_buffer.bRequest);
switch(usb_setup_buffer.bmRequestType) {
case 0x21: /* CDC interface OUT requests */
/* Check if it's the right interface */
if (usb_setup_buffer.wIndex != 0) return 0;
switch(usb_setup_buffer.bRequest) {
case SET_CONTROL_LINE_STATE:
if (usb_setup_buffer.wValue & 0x02) {
puts("Carrier on");
} else {
puts("Carrier off");
}
if (usb_setup_buffer.wValue & 0x01) {
puts("DTE on");
} else {
puts("DTE off");
}
usb_send_ctrl_status();
return 1;
case SEND_ENCAPSULATED_COMMAND:
printf("Got CDC command: length %d\n", usb_ctrl_data_len);
usb_send_ctrl_status();
return 1;
case SET_LINE_CODING:
if (usb_ctrl_data_len == 7) {
static const char parity_char[] = {'N', 'O', 'E', 'M', 'S'};
static const char *stop_bits_str[] = {"1","1.5","2"};
const struct usb_cdc_line_coding *coding =
(const struct usb_cdc_line_coding *)usb_ctrl_data_buffer;
char parity = ((coding->bParityType > 4)
? '?' : parity_char[coding->bParityType]);
const char *stop_bits = ((coding->bCharFormat > 2)
? "?" : stop_bits_str[coding->bCharFormat]);
printf("Got CDC line coding: %ld/%d/%c/%s\n",
coding->dwDTERate, coding->bDataBits, parity, stop_bits);
usb_send_ctrl_status();
} else {
return 0;
}
return 1;
}
break;
case 0xa1: /* CDC interface IN requests */
if (usb_setup_buffer.wIndex != 0) return 0;
switch(usb_setup_buffer.bRequest) {
case GET_ENCAPSULATED_RESPONSE:
printf("CDC response");
usb_send_ctrl_status();
return 1;
}
}
return 0;
}
static const struct USBRequestHandler cdc_acm_request_handler =
{
0x21, 0x7f,
0x00, 0x00,
handle_cdc_acm_requests
};
static struct USBRequestHandlerHook cdc_acm_request_hook =
{
NULL,
&cdc_acm_request_handler
};
void
usb_cdc_acm_setup()
{
usb_register_request_handler(&cdc_acm_request_hook);
}