Mirror/betaflight
1
0
Fork 0
mirror of https://github.com/betaflight/betaflight.git synced 2025-07-12 19:10:32 +03:00
Code Issues Wiki Activity

Correcting merge failure, and adding DEFIO_PORT_PINS definition

Browse source
This commit is contained in:
blckmn 2025-05-29 16:31:42 +10:00
parent d87b99c7c8
commit cdcffd937b
7 changed files with 770 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/main/drivers/io_def.h
View file

@ -43,7 +43,7 @@
// split ioTag bits between pin and port
// port is encoded as +1 to avoid collision with 0x0 (false as bool)
#ifndef DEFIO_PORT_PINS
#ifndef DEFIO_PORT_PINS
// pins per port
#define DEFIO_PORT_PINS 16
#endif

3
src/platform/PICO/io_def_generated.h
View file

@ -32,9 +32,6 @@
#error "Unsupported target MCU type for PICO"
#endif
#define DEFIO_PIN_BITMASK 0x7f
#define DEFIO_PORT_BITSHIFT 7
#undef DEFIO_TAG_MAKE
#define DEFIO_TAG_MAKE(pin) ((ioTag_t)(((1) << DEFIO_PORT_BITSHIFT) | (pin)))

287
src/platform/PICO/pico/platform.h Normal file
View file

@ -0,0 +1,287 @@
/*
* Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
/** \file platform.h
* \defgroup pico_platform pico_platform
*
* \brief Macros and definitions (and functions when included by non assembly code) for the RP2 family device / architecture
* to provide a common abstraction over low level compiler / platform specifics
*
* This header may be included by assembly code
*/
#ifndef _PICO_PLATFORM_H
#define _PICO_PLATFORM_H
#ifndef _PICO_H
#error pico/platform.h should not be included directly; include pico.h instead
#endif
#include "pico/platform/compiler.h"
#include "pico/platform/sections.h"
#include "pico/platform/panic.h"
#include "hardware/regs/addressmap.h"
#include "hardware/regs/sio.h"
#ifdef __riscv
#include "hardware/regs/rvcsr.h"
#endif
// PICO_CONFIG: PICO_RP2350A, Whether the current board has an RP2350 in an A (30 GPIO) package, type=bool, default=Usually provided via board header, group=pico_platform
#if 0 // make tooling checks happy
#define PICO_RP2350A 0
#endif
// PICO_CONFIG: PICO_RP2350_A2_SUPPORTED, Whether to include any specific software support for RP2350 A2 revision, type=bool, default=1, advanced=true, group=pico_platform
#ifndef PICO_RP2350_A2_SUPPORTED
#define PICO_RP2350_A2_SUPPORTED 1
#endif
// PICO_CONFIG: PICO_STACK_SIZE, Minimum amount of stack space reserved in the linker script for each core. See also PICO_CORE1_STACK_SIZE, min=0x100, default=0x800, advanced=true, group=pico_platform
#ifndef PICO_STACK_SIZE
#define PICO_STACK_SIZE _u(0x800)
#endif
// PICO_CONFIG: PICO_HEAP_SIZE, Minimum amount of heap space reserved by the linker script, min=0x100, default=0x800, advanced=true, group=pico_platform
#ifndef PICO_HEAP_SIZE
#define PICO_HEAP_SIZE _u(0x800)
#endif
// PICO_CONFIG: PICO_NO_RAM_VECTOR_TABLE, Enable/disable the RAM vector table, type=bool, default=0, advanced=true, group=pico_platform
#ifndef PICO_NO_RAM_VECTOR_TABLE
#define PICO_NO_RAM_VECTOR_TABLE 0
#endif
#ifndef PICO_RAM_VECTOR_TABLE_SIZE
#define PICO_RAM_VECTOR_TABLE_SIZE (VTABLE_FIRST_IRQ + NUM_IRQS)
#endif
// PICO_CONFIG: PICO_USE_STACK_GUARDS, Enable/disable stack guards, type=bool, default=0, advanced=true, group=pico_platform
#ifndef PICO_USE_STACK_GUARDS
#define PICO_USE_STACK_GUARDS 0
#endif
// PICO_CONFIG: PICO_CLKDIV_ROUND_NEAREST, True if floating point clock divisors should be rounded to the nearest possible clock divisor by default rather than rounding down, type=bool, default=1, group=pico_platform
#ifndef PICO_CLKDIV_ROUND_NEAREST
#define PICO_CLKDIV_ROUND_NEAREST 1
#endif
#ifndef __ASSEMBLER__
/*! \brief No-op function for the body of tight loops
* \ingroup pico_platform
*
* No-op function intended to be called by any tight hardware polling loop. Using this ubiquitously
* makes it much easier to find tight loops, but also in the future \#ifdef-ed support for lockup
* debugging might be added
*/
static __force_inline void tight_loop_contents(void) {}
/*! \brief Helper method to busy-wait for at least the given number of cycles
* \ingroup pico_platform
*
* This method is useful for introducing very short delays.
*
* This method busy-waits in a tight loop for the given number of system clock cycles. The total wait time is only accurate to within 2 cycles,
* and this method uses a loop counter rather than a hardware timer, so the method will always take longer than expected if an
* interrupt is handled on the calling core during the busy-wait; you can of course disable interrupts to prevent this.
*
* You can use \ref clock_get_hz(clk_sys) to determine the number of clock cycles per second if you want to convert an actual
* time duration to a number of cycles.
*
* \param minimum_cycles the minimum number of system clock cycles to delay for
*/
static inline void busy_wait_at_least_cycles(uint32_t minimum_cycles) {
pico_default_asm_volatile (
#ifdef __riscv
// Note the range is halved on RISC-V due to signed comparison (no carry flag)
".option push\n"
".option norvc\n" // force 32 bit addi, so branch prediction guaranteed
".p2align 2\n"
"1: \n"
"addi %0, %0, -2 \n"
"bgez %0, 1b\n"
".option pop"
#else
"1: subs %0, #3\n"
"bcs 1b\n"
#endif
: "+r" (minimum_cycles) : : "cc", "memory"
);
}
// PICO_CONFIG: PICO_NO_FPGA_CHECK, Remove the FPGA platform check for small code size reduction, type=bool, default=1, advanced=true, group=pico_runtime
#ifndef PICO_NO_FPGA_CHECK
#define PICO_NO_FPGA_CHECK 1
#endif
// PICO_CONFIG: PICO_NO_SIM_CHECK, Remove the SIM platform check for small code size reduction, type=bool, default=1, advanced=true, group=pico_runtime
#ifndef PICO_NO_SIM_CHECK
#define PICO_NO_SIM_CHECK 1
#endif
#if PICO_NO_FPGA_CHECK
static inline bool running_on_fpga(void) {return false;}
#else
bool running_on_fpga(void);
#endif
#if PICO_NO_SIM_CHECK
static inline bool running_in_sim(void) {return false;}
#else
bool running_in_sim(void);
#endif
/*! \brief Execute a breakpoint instruction
* \ingroup pico_platform
*/
static __force_inline void __breakpoint(void) {
#ifdef __riscv
__asm ("ebreak");
#else
pico_default_asm_volatile ("bkpt #0" : : : "memory");
#endif
}
/*! \brief Get the current core number
* \ingroup pico_platform
*
* \return The core number the call was made from
*/
__force_inline static uint get_core_num(void) {
return (*(uint32_t *) (SIO_BASE + SIO_CPUID_OFFSET));
}
/*! \brief Get the current exception level on this core
* \ingroup pico_platform
*
* On Cortex-M this is the exception number defined in the architecture
* reference, which is equal to VTABLE_FIRST_IRQ + irq num if inside an
* interrupt handler. (VTABLE_FIRST_IRQ is defined in platform_defs.h).
*
* On Hazard3, this function returns VTABLE_FIRST_IRQ + irq num if inside of
* an external IRQ handler (or a fault from such a handler), and 0 otherwise,
* generally aligning with the Cortex-M values.
*
* \return the exception number if the CPU is handling an exception, or 0 otherwise
*/
static __force_inline uint __get_current_exception(void) {
#ifdef __riscv
uint32_t meicontext;
pico_default_asm_volatile (
"csrr %0, %1\n"
: "=r" (meicontext) : "i" (RVCSR_MEICONTEXT_OFFSET)
);
if (meicontext & RVCSR_MEICONTEXT_NOIRQ_BITS) {
return 0;
} else {
return VTABLE_FIRST_IRQ + (
(meicontext & RVCSR_MEICONTEXT_IRQ_BITS) >> RVCSR_MEICONTEXT_IRQ_LSB
);
}
#else
uint exception;
pico_default_asm_volatile (
"mrs %0, ipsr\n"
"uxtb %0, %0\n"
: "=l" (exception)
);
return exception;
#endif
}
/*! \brief Return true if executing in the NonSecure state (Arm-only)
* \ingroup pico_platform
*
* \return True if currently executing in the NonSecure state on an Arm processor
*/
__force_inline static bool pico_processor_state_is_nonsecure(void) {
#ifndef __riscv
// todo add a define to disable NS checking at all?
// IDAU-Exempt addresses return S=1 when tested in the Secure state,
// whereas executing a tt in the NonSecure state will always return S=0.
uint32_t tt;
pico_default_asm_volatile (
"movs %0, #0\n"
"tt %0, %0\n"
: "=r" (tt) : : "cc"
);
return !(tt & (1u << 22));
#else
// NonSecure is an Arm concept, there is nothing meaningful to return
// here. Note it's not possible in general to detect whether you are
// executing in U-mode as, for example, M-mode is classically
// virtualisable in U-mode.
return false;
#endif
}
#define host_safe_hw_ptr(x) ((uintptr_t)(x))
#define native_safe_hw_ptr(x) host_safe_hw_ptr(x)
/*! \brief Returns the RP2350 chip revision number
* \ingroup pico_platform
* @return the RP2350 chip revision number (1 for B0/B1, 2 for B2)
*/
uint8_t rp2350_chip_version(void);
/*! \brief Returns the RP2040 chip revision number for compatibility
* \ingroup pico_platform
* @return 2 RP2040 errata fixed in B2 are fixed in RP2350
*/
static inline uint8_t rp2040_chip_version(void) {
return 2;
}
/*! \brief Returns the RP2040 rom version number
* \ingroup pico_platform
* @return the RP2040 rom version number (1 for RP2040-B0, 2 for RP2040-B1, 3 for RP2040-B2)
*/
static inline uint8_t rp2040_rom_version(void) {
GCC_Pragma("GCC diagnostic push")
GCC_Pragma("GCC diagnostic ignored \"-Warray-bounds\"")
return *(uint8_t*)0x13;
GCC_Pragma("GCC diagnostic pop")
}
/*! \brief Multiply two integers using an assembly `MUL` instruction
* \ingroup pico_platform
*
* This multiplies a by b using multiply instruction using the ARM mul instruction regardless of values (the compiler
* might otherwise choose to perform shifts/adds), i.e. this is a 1 cycle operation.
*
* \param a the first operand
* \param b the second operand
* \return a * b
*/
__force_inline static int32_t __mul_instruction(int32_t a, int32_t b) {
#ifdef __riscv
__asm ("mul %0, %0, %1" : "+r" (a) : "r" (b) : );
#else
pico_default_asm ("muls %0, %1" : "+l" (a) : "l" (b) : "cc");
#endif
return a;
}
/*! \brief multiply two integer values using the fastest method possible
* \ingroup pico_platform
*
* Efficiently multiplies value a by possibly constant value b.
*
* If b is known to be constant and not zero or a power of 2, then a mul instruction is used rather than gcc's default
* which is often a slow combination of shifts and adds. If b is a power of 2 then a single shift is of course preferable
* and will be used
*
* \param a the first operand
* \param b the second operand
* \return a * b
*/
#define __fast_mul(a, b) __builtin_choose_expr(__builtin_constant_p(b) && !__builtin_constant_p(a), \
(__builtin_popcount(b) >= 2 ? __mul_instruction(a,b) : (a)*(b)), \
(a)*(b))
#endif // __ASSEMBLER__
#endif

19
src/platform/PICO/pico/version.h Normal file
View file

@ -0,0 +1,19 @@
/*
* Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
// ---------------------------------------
// THIS FILE IS AUTOGENERATED; DO NOT EDIT
// ---------------------------------------
#ifndef _PICO_VERSION_H
#define _PICO_VERSION_H
#define PICO_SDK_VERSION_MAJOR 2
#define PICO_SDK_VERSION_MINOR 1
#define PICO_SDK_VERSION_REVISION 0
#define PICO_SDK_VERSION_STRING "2.1.0"
#endif

1
src/platform/PICO/platform_mcu.h
View file

@ -31,6 +31,7 @@
#define NVIC_PriorityGroup_2 0x500
#define PLATFORM_NO_LIBC 0
#define DEFIO_PORT_PINS 64
#if defined(RP2350A) || defined(RP2350B)

276
src/platform/PICO/usb/usb_cdc.c Normal file
View file

@ -0,0 +1,276 @@
/*
* This file is part of Betaflight.
*
* Betaflight is free software. You can redistribute this software
* and/or modify this software under the terms of the GNU General
* Public License as published by the Free Software Foundation,
* either version 3 of the License, or (at your option) any later
* version.
*
* Betaflight is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this software.
*
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "platform.h"
#include "tusb_config.h"
#include "tusb.h"
#include "usb_cdc.h"
#include "pico/binary_info.h"
#include "pico/time.h"
#include "pico/mutex.h"
#include "pico/critical_section.h"
#include "hardware/irq.h"
#ifndef CDC_USB_TASK_INTERVAL_US
#define CDC_USB_TASK_INTERVAL_US 1000
#endif
#ifndef CDC_USB_WRITE_TIMEOUT_US
#define CDC_USB_WRITE_TIMEOUT_US 1000
#endif
#ifndef CDC_DEADLOCK_TIMEOUT_MS
#define CDC_DEADLOCK_TIMEOUT_MS 1000
#endif
#ifndef CDC_USB_BAUD_RATE
#define CDC_USD_BAUD_RATE 115200
#endif
static bool configured = false;
static mutex_t cdc_usb_mutex;
// if this crit_sec is initialized, we are not in periodic timer mode, and must make sure
// we don't either create multiple one shot timers, or miss creating one. this crit_sec
// is used to protect the one_shot_timer_pending flag
static critical_section_t one_shot_timer_crit_sec;
static volatile bool one_shot_timer_pending;
static uint8_t low_priority_irq_num;
static int64_t timer_task(alarm_id_t id, void *user_data)
{
UNUSED(id);
UNUSED(user_data);
int64_t repeat_time;
if (critical_section_is_initialized(&one_shot_timer_crit_sec)) {
critical_section_enter_blocking(&one_shot_timer_crit_sec);
one_shot_timer_pending = false;
critical_section_exit(&one_shot_timer_crit_sec);
repeat_time = 0; // don't repeat
} else {
repeat_time = CDC_USB_TASK_INTERVAL_US;
}
if (irq_is_enabled(low_priority_irq_num)) {
irq_set_pending(low_priority_irq_num);
return repeat_time;
} else {
return 0; // don't repeat
}
}
static void low_priority_worker_irq(void)
{
if (mutex_try_enter(&cdc_usb_mutex, NULL)) {
tud_task();
mutex_exit(&cdc_usb_mutex);
} else {
// if the mutex is already owned, then we are in non IRQ code in this file.
//
// it would seem simplest to just let that code call tud_task() at the end, however this
// code might run during the call to tud_task() and we might miss a necessary tud_task() call
//
// if we are using a periodic timer (crit_sec is not initialized in this case),
// then we are happy just to wait until the next tick, however when we are not using a periodic timer,
// we must kick off a one-shot timer to make sure the tud_task() DOES run (this method
// will be called again as a result, and will try the mutex_try_enter again, and if that fails
// create another one shot timer again, and so on).
if (critical_section_is_initialized(&one_shot_timer_crit_sec)) {
bool need_timer;
critical_section_enter_blocking(&one_shot_timer_crit_sec);
need_timer = !one_shot_timer_pending;
one_shot_timer_pending = true;
critical_section_exit(&one_shot_timer_crit_sec);
if (need_timer) {
add_alarm_in_us(CDC_USB_TASK_INTERVAL_US, timer_task, NULL, true);
}
}
}
}
static void usb_irq(void)
{
irq_set_pending(low_priority_irq_num);
}
int cdc_usb_write(const uint8_t *buf, unsigned length)
{
static uint64_t last_avail_time;
int written = 0;
if (!mutex_try_enter_block_until(&cdc_usb_mutex, make_timeout_time_ms(CDC_DEADLOCK_TIMEOUT_MS))) {
return -1;
}
if (cdc_usb_connected()) {
for (unsigned i = 0; i < length;) {
unsigned n = length - i;
uint32_t avail = tud_cdc_write_available();
if (n > avail) n = avail;
if (n) {
uint32_t n2 = tud_cdc_write(buf + i, n);
tud_task();
tud_cdc_write_flush();
i += n2;
written = i;
last_avail_time = time_us_64();
} else {
tud_task();
tud_cdc_write_flush();
if (!cdc_usb_connected() || (!tud_cdc_write_available() && time_us_64() > last_avail_time + CDC_USB_WRITE_TIMEOUT_US)) {
break;
}
}
}
} else {
// reset our timeout
last_avail_time = 0;
}
mutex_exit(&cdc_usb_mutex);
return written;
}
void cdc_usb_write_flush(void)
{
if (!mutex_try_enter_block_until(&cdc_usb_mutex, make_timeout_time_ms(CDC_DEADLOCK_TIMEOUT_MS))) {
return;
}
do {
tud_task();
} while (tud_cdc_write_flush());
mutex_exit(&cdc_usb_mutex);
}
int cdc_usb_read(uint8_t *buf, unsigned length)
{
// note we perform this check outside the lock, to try and prevent possible deadlock conditions
// with printf in IRQs (which we will escape through timeouts elsewhere, but that would be less graceful).
//
// these are just checks of state, so we can call them while not holding the lock.
// they may be wrong, but only if we are in the middle of a tud_task call, in which case at worst
// we will mistakenly think we have data available when we do not (we will check again), or
// tud_task will complete running and we will check the right values the next time.
//
int rc = PICO_ERROR_NO_DATA;
if (cdc_usb_connected() && tud_cdc_available()) {
if (!mutex_try_enter_block_until(&cdc_usb_mutex, make_timeout_time_ms(CDC_DEADLOCK_TIMEOUT_MS))) {
return PICO_ERROR_NO_DATA; // would deadlock otherwise
}
if (cdc_usb_connected() && tud_cdc_available()) {
uint32_t count = tud_cdc_read(buf, length);
rc = count ? (int)count : PICO_ERROR_NO_DATA;
} else {
// because our mutex use may starve out the background task, run tud_task here (we own the mutex)
tud_task();
}
mutex_exit(&cdc_usb_mutex);
}
return rc;
}
bool cdc_usb_init(void)
{
if (get_core_num() != alarm_pool_core_num(alarm_pool_get_default())) {
// included an assertion here rather than just returning false, as this is likely
// a coding bug, rather than anything else.
assert(false);
return false;
}
// initialize TinyUSB, as user hasn't explicitly linked it
tusb_init();
if (!mutex_is_initialized(&cdc_usb_mutex)) {
mutex_init(&cdc_usb_mutex);
}
bool rc = true;
low_priority_irq_num = (uint8_t)user_irq_claim_unused(true);
irq_set_exclusive_handler(low_priority_irq_num, low_priority_worker_irq);
irq_set_enabled(low_priority_irq_num, true);
if (irq_has_shared_handler(USBCTRL_IRQ)) {
critical_section_init_with_lock_num(&one_shot_timer_crit_sec, spin_lock_claim_unused(true));
// we can use a shared handler to notice when there may be work to do
irq_add_shared_handler(USBCTRL_IRQ, usb_irq, PICO_SHARED_IRQ_HANDLER_LOWEST_ORDER_PRIORITY);
} else {
// we use initialization state of the one_shot_timer_critsec as a flag
memset(&one_shot_timer_crit_sec, 0, sizeof(one_shot_timer_crit_sec));
rc = add_alarm_in_us(CDC_USB_TASK_INTERVAL_US, timer_task, NULL, true) >= 0;
}
configured = rc;
return rc;
}
bool cdc_usb_deinit(void)
{
if (get_core_num() != alarm_pool_core_num(alarm_pool_get_default())) {
// included an assertion here rather than just returning false, as this is likely
// a coding bug, rather than anything else.
assert(false);
return false;
}
assert(tud_inited()); // we expect the caller to have initialized when calling sdio_usb_init
if (irq_has_shared_handler(USBCTRL_IRQ)) {
spin_lock_unclaim(spin_lock_get_num(one_shot_timer_crit_sec.spin_lock));
critical_section_deinit(&one_shot_timer_crit_sec);
// we can use a shared handler to notice when there may be work to do
irq_remove_handler(USBCTRL_IRQ, usb_irq);
} else {
// timer is disabled by disabling the irq
}
irq_set_enabled(low_priority_irq_num, false);
user_irq_unclaim(low_priority_irq_num);
configured = false;
return true;
}
bool cdc_usb_configured(void)
{
return configured;
}
bool cdc_usb_connected(void)
{
return tud_cdc_connected();
}
bool cdc_usb_bytes_available(void)
{
return tud_cdc_available();
}
uint32_t cdc_usb_baud_rate(void)
{
return CDC_USD_BAUD_RATE;
}
uint32_t cdc_usb_tx_bytes_free(void)
{
return tud_cdc_write_available();
}

186
src/platform/PICO/usb/usb_descriptors.c Normal file
View file

@ -0,0 +1,186 @@
/*
* This file is part of Betaflight.
*
* Betaflight is free software. You can redistribute this software
* and/or modify this software under the terms of the GNU General
* Public License as published by the Free Software Foundation,
* either version 3 of the License, or (at your option) any later
* version.
*
* Betaflight is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this software.
*
* If not, see <http://www.gnu.org/licenses/>.
*/
/*
* This file is based on a file originally part of the
* MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
* Copyright (c) 2019 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "tusb.h"
#include "pico/unique_id.h"
#include "common/utils.h"
#ifndef USBD_VID
// Raspberry Pi
#define USBD_VID (0x2E8A)
#endif
#ifndef USBD_PID
#if PICO_RP2040
// Raspberry Pi Pico SDK CDC for RP2040
#define USBD_PID (0x000a)
#else
// Raspberry Pi Pico SDK CDC
#define USBD_PID (0x0009)
#endif
#endif
#ifndef USBD_MANUFACTURER
#define USBD_MANUFACTURER "Betaflight Pico"
#endif
#ifndef USBD_PRODUCT
#define USBD_PRODUCT "Pico"
#endif
#define TUD_RPI_RESET_DESC_LEN 9
#define USBD_DESC_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN + TUD_RPI_RESET_DESC_LEN)
#define USBD_CONFIGURATION_DESCRIPTOR_ATTRIBUTE 0
#define USBD_MAX_POWER_MA 250
#define USBD_ITF_CDC 0 // needs 2 interfaces
#define USBD_ITF_MAX 2
#define USBD_CDC_EP_CMD 0x81
#define USBD_CDC_EP_OUT 0x02
#define USBD_CDC_EP_IN 0x82
#define USBD_CDC_CMD_MAX_SIZE 8
#define USBD_CDC_IN_OUT_MAX_SIZE 64
#define USBD_STR_0 0x00
#define USBD_STR_MANUF 0x01
#define USBD_STR_PRODUCT 0x02
#define USBD_STR_SERIAL 0x03
#define USBD_STR_CDC 0x04
#define USBD_STR_RPI_RESET 0x05
// Note: descriptors returned from callbacks must exist long enough for transfer to complete
static const tusb_desc_device_t usbd_desc_device = {
.bLength = sizeof(tusb_desc_device_t),
.bDescriptorType = TUSB_DESC_DEVICE,
.bcdUSB = 0x0200,
.bDeviceClass = TUSB_CLASS_MISC,
.bDeviceSubClass = MISC_SUBCLASS_COMMON,
.bDeviceProtocol = MISC_PROTOCOL_IAD,
.bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE,
.idVendor = USBD_VID,
.idProduct = USBD_PID,
.bcdDevice = 0x0100,
.iManufacturer = USBD_STR_MANUF,
.iProduct = USBD_STR_PRODUCT,
.iSerialNumber = USBD_STR_SERIAL,
.bNumConfigurations = 1,
};
#define TUD_RPI_RESET_DESCRIPTOR(_itfnum, _stridx) \
/* Interface */\
9, TUSB_DESC_INTERFACE, _itfnum, 0, 0, TUSB_CLASS_VENDOR_SPECIFIC, RESET_INTERFACE_SUBCLASS, RESET_INTERFACE_PROTOCOL, _stridx,
static const uint8_t usbd_desc_cfg[USBD_DESC_LEN] = {
TUD_CONFIG_DESCRIPTOR(1, USBD_ITF_MAX, USBD_STR_0, USBD_DESC_LEN,
USBD_CONFIGURATION_DESCRIPTOR_ATTRIBUTE, USBD_MAX_POWER_MA),
TUD_CDC_DESCRIPTOR(USBD_ITF_CDC, USBD_STR_CDC, USBD_CDC_EP_CMD,
USBD_CDC_CMD_MAX_SIZE, USBD_CDC_EP_OUT, USBD_CDC_EP_IN, USBD_CDC_IN_OUT_MAX_SIZE),
};
static char usbd_serial_str[PICO_UNIQUE_BOARD_ID_SIZE_BYTES * 2 + 1];
static const char *const usbd_desc_str[] = {
[USBD_STR_MANUF] = USBD_MANUFACTURER,
[USBD_STR_PRODUCT] = USBD_PRODUCT,
[USBD_STR_SERIAL] = usbd_serial_str,
[USBD_STR_CDC] = "Board CDC",
};
const uint8_t *tud_descriptor_device_cb(void)
{
return (const uint8_t *)&usbd_desc_device;
}
const uint8_t *tud_descriptor_configuration_cb(uint8_t index)
{
UNUSED(index);
return usbd_desc_cfg;
}
const uint16_t *tud_descriptor_string_cb(uint8_t index, uint16_t langid)
{
UNUSED(langid);
#ifndef USBD_DESC_STR_MAX
#define USBD_DESC_STR_MAX (20)
#elif USBD_DESC_STR_MAX > 127
#error USBD_DESC_STR_MAX too high (max is 127).
#elif USBD_DESC_STR_MAX < 17
#error USBD_DESC_STR_MAX too low (min is 17).
#endif
static uint16_t desc_str[USBD_DESC_STR_MAX];
// Assign the SN using the unique flash id
if (!usbd_serial_str[0]) {
pico_get_unique_board_id_string(usbd_serial_str, sizeof(usbd_serial_str));
}
unsigned len;
if (index == 0) {
desc_str[1] = 0x0409; // supported language is English
len = 1;
} else {
if (index >= ARRAYLEN(usbd_desc_str)) {
return NULL;
}
const char *str = usbd_desc_str[index];
for (len = 0; len < USBD_DESC_STR_MAX - 1 && str[len]; ++len) {
desc_str[1 + len] = str[len];
}
}
// first byte is length (including header), second byte is string type
desc_str[0] = (uint16_t)((TUSB_DESC_STRING << 8) | (2 * len + 2));
return desc_str;
}