152 lines
4.3 KiB
C
152 lines
4.3 KiB
C
#include "tusb.h"
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#include "protocol.h"
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#include "pico/unique_id.h"
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#include <string.h>
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#define USB_BCD 0x0200
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tusb_desc_device_t const desc_device = {
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.bLength = sizeof(tusb_desc_device_t),
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.bDescriptorType = TUSB_DESC_DEVICE,
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.bcdUSB = USB_BCD,
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.bDeviceClass = TUSB_CLASS_MISC,
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.bDeviceSubClass = MISC_SUBCLASS_COMMON,
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.bDeviceProtocol = MISC_PROTOCOL_IAD,
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.bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE,
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.idVendor = AUSIO_USB_VID,
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.idProduct = AUSIO_USB_PID,
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.bcdDevice = 0x0100,
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.iManufacturer = 0x01,
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.iProduct = 0x02,
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.iSerialNumber = 0x03,
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.bNumConfigurations = 0x01
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};
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uint8_t const *tud_descriptor_device_cb(void) {
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return (uint8_t const *)&desc_device;
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}
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/* Vendor page: Report ID1 Input 7 bytes, Report ID2 Output 63 bytes */
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uint8_t const desc_hid_report[] = {
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HID_USAGE_PAGE_N(HID_USAGE_PAGE_VENDOR, 2),
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HID_USAGE(0x01),
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HID_COLLECTION(HID_COLLECTION_APPLICATION),
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/* Input report ID 1: 7 data bytes */
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HID_REPORT_ID(AUSIO_REPORT_ID_INPUT)
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HID_USAGE(0x02),
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HID_LOGICAL_MIN(0x00),
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HID_LOGICAL_MAX_N(0xff, 2),
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HID_REPORT_SIZE(8),
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HID_REPORT_COUNT(AUSIO_INPUT_SIZE - 1),
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HID_INPUT(HID_DATA | HID_VARIABLE | HID_ABSOLUTE),
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/* Output report ID 2: 63 data bytes */
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HID_REPORT_ID(AUSIO_REPORT_ID_OUTPUT)
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HID_USAGE(0x03),
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HID_LOGICAL_MIN(0x00),
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HID_LOGICAL_MAX_N(0xff, 2),
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HID_REPORT_SIZE(8),
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HID_REPORT_COUNT(AUSIO_OUTPUT_SIZE - 1),
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HID_OUTPUT(HID_DATA | HID_VARIABLE | HID_ABSOLUTE),
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HID_COLLECTION_END
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};
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uint8_t const *tud_hid_descriptor_report_cb(uint8_t itf) {
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(void)itf;
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return desc_hid_report;
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}
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enum {
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ITF_NUM_CDC = 0,
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ITF_NUM_CDC_DATA,
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ITF_NUM_HID,
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ITF_NUM_TOTAL
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};
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#define EPNUM_CDC_NOTIF 0x81
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#define EPNUM_CDC_OUT 0x02
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#define EPNUM_CDC_IN 0x82
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#define EPNUM_HID_OUT 0x03
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#define EPNUM_HID_IN 0x83
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#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN + TUD_HID_INOUT_DESC_LEN)
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uint8_t const desc_configuration[] = {
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TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100),
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TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 64),
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TUD_HID_INOUT_DESCRIPTOR(ITF_NUM_HID, 5, HID_ITF_PROTOCOL_NONE,
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sizeof(desc_hid_report),
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EPNUM_HID_OUT, EPNUM_HID_IN,
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CFG_TUD_HID_EP_BUFSIZE, 5)
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};
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uint8_t const *tud_descriptor_configuration_cb(uint8_t index) {
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(void)index;
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return desc_configuration;
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}
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enum {
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STRID_LANGID = 0,
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STRID_MANUFACTURER,
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STRID_PRODUCT,
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STRID_SERIAL,
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STRID_CDC,
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STRID_HID,
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};
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static char const *string_desc_arr[] = {
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(const char[]){0x09, 0x04},
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"Ausiomixer",
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"Ausiomixer HID Mixer",
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NULL,
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"Ausiomixer CDC",
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"Ausiomixer HID",
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};
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static uint16_t _desc_str[32 + 1];
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uint16_t const *tud_descriptor_string_cb(uint8_t index, uint16_t langid) {
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(void)langid;
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size_t chr_count = 0;
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switch (index) {
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case STRID_LANGID:
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memcpy(&_desc_str[1], string_desc_arr[0], 2);
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chr_count = 1;
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break;
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case STRID_SERIAL: {
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pico_unique_board_id_t id;
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pico_get_unique_board_id(&id);
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chr_count = 0;
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for (int i = 0; i < PICO_UNIQUE_BOARD_ID_SIZE_BYTES && chr_count < 16; i++) {
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static char const hex[] = "0123456789ABCDEF";
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_desc_str[1 + chr_count++] = (uint16_t)hex[id.id[i] >> 4];
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_desc_str[1 + chr_count++] = (uint16_t)hex[id.id[i] & 0x0f];
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}
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break;
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}
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default:
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if (index >= sizeof(string_desc_arr) / sizeof(string_desc_arr[0])) {
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return NULL;
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}
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{
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const char *str = string_desc_arr[index];
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if (!str) {
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return NULL;
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}
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chr_count = strlen(str);
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if (chr_count > 31) {
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chr_count = 31;
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}
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for (size_t i = 0; i < chr_count; i++) {
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_desc_str[1 + i] = (uint16_t)str[i];
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}
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}
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break;
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}
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_desc_str[0] = (uint16_t)((TUSB_DESC_STRING << 8) | (2 * chr_count + 2));
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return _desc_str;
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}
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