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https://github.com/licsber/micropython.git
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f46782dde9
This is an extremely minimal port to the NXP i.MX RT, in the style of the
SAMD port It's largely based on the TinyUSB mimxrt implementation, using
the NXP SDK. It currently supports the Teensy 4.0 board with a REPL over
the USB-VCP interface.
This commit also adds the NXP SDK submodule (also from TinyUSB) to
lib/nxp_driver.
Note: if you already have the tinyusb submodule initialized recursively you
will need to run the following as the tinyusb sub-submodules have been
rearranged (upstream):
git submodule deinit lib/tinyusb
rm -rf .git/modules/lib/tinyusb
git submodule update --init lib/tinyusb
115 lines
3.8 KiB
C
115 lines
3.8 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "tusb.h"
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#define USBD_VID (0xf055)
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#define USBD_PID (0x9802)
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#define USBD_DESC_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN)
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#define USBD_MAX_POWER_MA (250)
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#define USBD_ITF_CDC (0) // needs 2 interfaces
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#define USBD_ITF_MAX (2)
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#define USBD_CDC_EP_CMD (0x81)
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#define USBD_CDC_EP_OUT (0x02)
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#define USBD_CDC_EP_IN (0x82)
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#define USBD_CDC_CMD_MAX_SIZE (8)
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#define USBD_STR_0 (0x00)
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#define USBD_STR_MANUF (0x01)
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#define USBD_STR_PRODUCT (0x02)
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#define USBD_STR_SERIAL (0x03)
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#define USBD_STR_CDC (0x04)
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// Note: descriptors returned from callbacks must exist long enough for transfer to complete
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static const tusb_desc_device_t usbd_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 = 0x0200,
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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 = USBD_VID,
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.idProduct = USBD_PID,
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.bcdDevice = 0x0100,
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.iManufacturer = USBD_STR_MANUF,
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.iProduct = USBD_STR_PRODUCT,
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.iSerialNumber = USBD_STR_SERIAL,
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.bNumConfigurations = 1,
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};
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static const uint8_t usbd_desc_cfg[USBD_DESC_LEN] = {
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TUD_CONFIG_DESCRIPTOR(USBD_ITF_MAX, USBD_STR_0, USBD_DESC_LEN,
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TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, USBD_MAX_POWER_MA),
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TUD_CDC_DESCRIPTOR(USBD_ITF_CDC, USBD_STR_CDC, USBD_CDC_EP_CMD,
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USBD_CDC_CMD_MAX_SIZE, USBD_CDC_EP_OUT, USBD_CDC_EP_IN, CFG_TUD_CDC_RX_BUFSIZE),
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};
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static const char *const usbd_desc_str[] = {
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[USBD_STR_MANUF] = "MicroPython",
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[USBD_STR_PRODUCT] = "Board in FS mode",
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[USBD_STR_SERIAL] = "000000000000", // TODO
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[USBD_STR_CDC] = "Board CDC",
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};
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const uint8_t *tud_descriptor_device_cb(void) {
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return (const uint8_t *)&usbd_desc_device;
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}
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const uint8_t *tud_descriptor_configuration_cb(uint8_t index) {
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(void)index;
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return usbd_desc_cfg;
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}
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const uint16_t *tud_descriptor_string_cb(uint8_t index) {
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#define DESC_STR_MAX (20)
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static uint16_t desc_str[DESC_STR_MAX];
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uint8_t len;
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if (index == 0) {
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desc_str[1] = 0x0409; // supported language is English
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len = 1;
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} else {
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if (index >= sizeof(usbd_desc_str) / sizeof(usbd_desc_str[0])) {
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return NULL;
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}
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const char *str = usbd_desc_str[index];
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for (len = 0; len < DESC_STR_MAX - 1 && str[len]; ++len) {
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desc_str[1 + len] = str[len];
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}
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}
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// first byte is length (including header), second byte is string type
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desc_str[0] = (TUSB_DESC_STRING << 8 ) | (2 * len + 2);
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return desc_str;
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}
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