I try to write data to a USB serial device. The host is a RPI pico board, arduino IDE, adafruit TinyUSB USB stack.
If I run the default example device_info.ino, I get the descriptor when I connect the device:
Code from device_info.ino example:
Code: Select all
/*********************************************************************
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
MIT license, check LICENSE for more information
Copyright (c) 2019 Ha Thach for Adafruit Industries
All text above, and the splash screen below must be included in
any redistribution
*********************************************************************/
// pio-usb is required for rp2040 host
#include "pio_usb.h"
#define HOST_PIN_DP 0 // Pin used as D+ for host, D- = D+ + 1
#include "Adafruit_TinyUSB.h"
#define LANGUAGE_ID 0x0409 // English
// USB Host object
Adafruit_USBH_Host USBHost;
// holding device descriptor
tusb_desc_device_t desc_device;
// the setup function runs once when you press reset or power the board
void setup() {
Serial1.begin(115200);
Serial.begin(115200);
//while ( !Serial ) delay(10); // wait for native usb
Serial.println("TinyUSB Dual Device Info Example");
}
void loop() {
}
// core1's setup
void setup1() {
//while ( !Serial ) delay(10); // wait for native usb
Serial.println("Core1 setup to run TinyUSB host with pio-usb");
// Check for CPU frequency, must be multiple of 120Mhz for bit-banging USB
uint32_t cpu_hz = clock_get_hz(clk_sys);
if (cpu_hz != 120000000UL && cpu_hz != 240000000UL) {
while (!Serial) delay(10); // wait for native usb
Serial.printf("Error: CPU Clock = %u, PIO USB require CPU clock must be multiple of 120 Mhz\r\n", cpu_hz);
Serial.printf("Change your CPU Clock to either 120 or 240 Mhz in Menu->CPU Speed \r\n", cpu_hz);
while (1) delay(1);
}
pio_usb_configuration_t pio_cfg = PIO_USB_DEFAULT_CONFIG;
pio_cfg.pin_dp = HOST_PIN_DP;
USBHost.configure_pio_usb(1, &pio_cfg);
// run host stack on controller (rhport) 1
// Note: For rp2040 pico-pio-usb, calling USBHost.begin() on core1 will have most of the
// host bit-banging processing works done in core1 to free up core0 for other works
USBHost.begin(1);
}
// core1's loop
void loop1() {
USBHost.task();
}
//--------------------------------------------------------------------+
// TinyUSB Host callbacks
//--------------------------------------------------------------------+
// Invoked when device is mounted (configured)
void tuh_mount_cb(uint8_t daddr) {
Serial.printf("Device attached, address = %d\r\n", daddr);
if (tuh_cdc_mounted(daddr)) {
Serial.printf("Device is a cdc device!!", daddr);
} else {
Serial.printf("Device is NOT cdc DEVICE!!", daddr);
}
// Get Device Descriptor
tuh_descriptor_get_device(daddr, &desc_device, 18, print_device_descriptor, 0);
}
/// Invoked when device is unmounted (bus reset/unplugged)
void tuh_umount_cb(uint8_t daddr) {
Serial.printf("Device removed, address = %d\r\n", daddr);
}
void print_device_descriptor(tuh_xfer_t *xfer) {
if (XFER_RESULT_SUCCESS != xfer->result) {
Serial.printf("Failed to get device descriptor\r\n");
return;
}
uint8_t const daddr = xfer->daddr;
Serial.printf("Device %u: ID %04x:%04x\r\n", daddr, desc_device.idVendor, desc_device.idProduct);
Serial.printf("Device Descriptor:\r\n");
Serial.printf(" bLength %u\r\n", desc_device.bLength);
Serial.printf(" bDescriptorType %u\r\n", desc_device.bDescriptorType);
Serial.printf(" bcdUSB %04x\r\n", desc_device.bcdUSB);
Serial.printf(" bDeviceClass %u\r\n", desc_device.bDeviceClass);
Serial.printf(" bDeviceSubClass %u\r\n", desc_device.bDeviceSubClass);
Serial.printf(" bDeviceProtocol %u\r\n", desc_device.bDeviceProtocol);
Serial.printf(" bMaxPacketSize0 %u\r\n", desc_device.bMaxPacketSize0);
Serial.printf(" idVendor 0x%04x\r\n", desc_device.idVendor);
Serial.printf(" idProduct 0x%04x\r\n", desc_device.idProduct);
Serial.printf(" bcdDevice %04x\r\n", desc_device.bcdDevice);
// Get String descriptor using Sync API
uint16_t temp_buf[128];
Serial.printf(" iManufacturer %u ", desc_device.iManufacturer);
if (XFER_RESULT_SUCCESS == tuh_descriptor_get_manufacturer_string_sync(daddr, LANGUAGE_ID, temp_buf, sizeof(temp_buf))) {
print_utf16(temp_buf, TU_ARRAY_SIZE(temp_buf));
}
Serial.printf("\r\n");
Serial.printf(" iProduct %u ", desc_device.iProduct);
if (XFER_RESULT_SUCCESS == tuh_descriptor_get_product_string_sync(daddr, LANGUAGE_ID, temp_buf, sizeof(temp_buf))) {
print_utf16(temp_buf, TU_ARRAY_SIZE(temp_buf));
}
Serial.printf("\r\n");
Serial.printf(" iSerialNumber %u ", desc_device.iSerialNumber);
if (XFER_RESULT_SUCCESS == tuh_descriptor_get_serial_string_sync(daddr, LANGUAGE_ID, temp_buf, sizeof(temp_buf))) {
print_utf16(temp_buf, TU_ARRAY_SIZE(temp_buf));
}
Serial.printf("\r\n");
Serial.printf(" bNumConfigurations %u\r\n", desc_device.bNumConfigurations);
}
//--------------------------------------------------------------------+
// String Descriptor Helper
//--------------------------------------------------------------------+
static void _convert_utf16le_to_utf8(const uint16_t *utf16, size_t utf16_len, uint8_t *utf8, size_t utf8_len) {
// TODO: Check for runover.
(void)utf8_len;
// Get the UTF-16 length out of the data itself.
for (size_t i = 0; i < utf16_len; i++) {
uint16_t chr = utf16[i];
if (chr < 0x80) {
*utf8++ = chr & 0xff;
} else if (chr < 0x800) {
*utf8++ = (uint8_t)(0xC0 | (chr >> 6 & 0x1F));
*utf8++ = (uint8_t)(0x80 | (chr >> 0 & 0x3F));
} else {
// TODO: Verify surrogate.
*utf8++ = (uint8_t)(0xE0 | (chr >> 12 & 0x0F));
*utf8++ = (uint8_t)(0x80 | (chr >> 6 & 0x3F));
*utf8++ = (uint8_t)(0x80 | (chr >> 0 & 0x3F));
}
// TODO: Handle UTF-16 code points that take two entries.
}
}
// Count how many bytes a utf-16-le encoded string will take in utf-8.
static int _count_utf8_bytes(const uint16_t *buf, size_t len) {
size_t total_bytes = 0;
for (size_t i = 0; i < len; i++) {
uint16_t chr = buf[i];
if (chr < 0x80) {
total_bytes += 1;
} else if (chr < 0x800) {
total_bytes += 2;
} else {
total_bytes += 3;
}
// TODO: Handle UTF-16 code points that take two entries.
}
return total_bytes;
}
static void print_utf16(uint16_t *temp_buf, size_t buf_len) {
size_t utf16_len = ((temp_buf[0] & 0xff) - 2) / sizeof(uint16_t);
size_t utf8_len = _count_utf8_bytes(temp_buf + 1, utf16_len);
_convert_utf16le_to_utf8(temp_buf + 1, utf16_len, (uint8_t *)temp_buf, sizeof(uint16_t) * buf_len);
((uint8_t *)temp_buf)[utf8_len] = '\0';
Serial.printf((char *)temp_buf);
}
Code: Select all
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 0110
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x067b
idProduct 0x2303
bcdDevice 0300
iManufacturer 1 Prolific Technology Inc.
iProduct 2 USB-Serial Controller
iSerialNumber 0
bNumConfigurations 1
https://github.com/adafruit/Adafruit_Ti ... bridge.ino
Code from serial_host_bridge example:
Code: Select all
/*********************************************************************
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
MIT license, check LICENSE for more information
Copyright (c) 2019 Ha Thach for Adafruit Industries
All text above, and the splash screen below must be included in
any redistribution
*********************************************************************/
/* This example demonstrates use of Host Serial (CDC). SerialHost (declared below) is
* an object to manage an CDC peripheral connected to our USB Host connector. This example
* will forward all characters from Serial to SerialHost and vice versa.
*
* Note:
* - Device run on native usb controller (controller0)
* - Host run on bit-banging 2 GPIOs with the help of Pico-PIO-USB library (controller1)
* Requirements:
* - [Pico-PIO-USB](https://github.com/sekigon-gonnoc/Pico-PIO-USB) library
* - 2 consecutive GPIOs: D+ is defined by HOST_PIN_DP (gpio20), D- = D+ +1 (gpio21)
* - Provide VBus (5v) and GND for peripheral
* - CPU Speed must be either 120 or 240 Mhz. Selected via "Menu -> CPU Speed"
*/
// pio-usb is required for rp2040 host
#include "pio_usb.h"
// TinyUSB lib
#include "Adafruit_TinyUSB.h"
// Pin D+ for host, D- = D+ + 1
#define HOST_PIN_DP 0
// USB Host object
Adafruit_USBH_Host USBHost;
// CDC Host object
Adafruit_USBH_CDC SerialHost;
//--------------------------------------------------------------------+
// Setup and Loop on Core0
//--------------------------------------------------------------------+
void setup() {
Serial1.begin(115200);
Serial.begin(115200);
while ( !Serial ) delay(10); // wait for native usb
Serial.println("TinyUSB Host Serial Echo Example");
}
void loop()
{
uint8_t buf[64];
// Serial -> SerialHost
if (Serial.available()) {
size_t count = Serial.read(buf, sizeof(buf));
if ( SerialHost && SerialHost.connected() ) {
SerialHost.write(buf, count);
SerialHost.flush();
}
}
// SerialHost -> Serial
if ( SerialHost.connected() && SerialHost.available() ) {
size_t count = SerialHost.read(buf, sizeof(buf));
Serial.write(buf, count);
}
}
//--------------------------------------------------------------------+
// Setup and Loop on Core1
//--------------------------------------------------------------------+
void setup1() {
while ( !Serial ) delay(10); // wait for native usb
Serial.println("Core1 setup to run TinyUSB host with pio-usb");
// Check for CPU frequency, must be multiple of 120Mhz for bit-banging USB
uint32_t cpu_hz = clock_get_hz(clk_sys);
if ( cpu_hz != 120000000UL && cpu_hz != 240000000UL ) {
while ( !Serial ) {
delay(10); // wait for native usb
}
Serial.printf("Error: CPU Clock = %u, PIO USB require CPU clock must be multiple of 120 Mhz\r\n", cpu_hz);
Serial.printf("Change your CPU Clock to either 120 or 240 Mhz in Menu->CPU Speed \r\n", cpu_hz);
while(1) {
delay(1);
}
}
#ifdef HOST_PIN_VBUS_EN
pinMode(HOST_PIN_VBUS_EN, OUTPUT);
// power off first
digitalWrite(HOST_PIN_VBUS_EN, 1-HOST_PIN_VBUS_EN_STATE);
delay(1);
// power on
digitalWrite(HOST_PIN_VBUS_EN, HOST_PIN_VBUS_EN_STATE);
delay(10);
#endif
pio_usb_configuration_t pio_cfg = PIO_USB_DEFAULT_CONFIG;
pio_cfg.pin_dp = HOST_PIN_DP;
USBHost.configure_pio_usb(1, &pio_cfg);
// run host stack on controller (rhport) 1
// Note: For rp2040 pico-pio-usb, calling USBHost.begin() on core1 will have most of the
// host bit-banging processing works done in core1 to free up core0 for other works
USBHost.begin(1);
}
void loop1()
{
USBHost.task();
// periodically flush SerialHost if connected
if ( SerialHost && SerialHost.connected() ) {
SerialHost.flush();
}
}
//--------------------------------------------------------------------+
// TinyUSB Host callbacks
//--------------------------------------------------------------------+
// Invoked when a device with CDC interface is mounted
// idx is index of cdc interface in the internal pool.
void tuh_cdc_mount_cb(uint8_t idx) {
// bind SerialHost object to this interface index
SerialHost.begin(idx);
Serial.println("SerialHost is connected to a new CDC device");
}
// Invoked when a device with CDC interface is unmounted
void tuh_cdc_umount_cb(uint8_t idx) {
if (idx == SerialHost.getIndex()) {
// unbind SerialHost if this interface is unmounted
SerialHost.end();
Serial.println("SerialHost is disconnected");
}
}
I suppose this is because the bDeviceClass is 0 and not 2. ( https://www.usb.org/defined-class-codes )
Does anybody have an idea how to open endpoints and send data to this type of device?