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
3.3 KiB
C
115 lines
3.3 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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* Based on tinyusb/hw/bsp/teensy_40/teensy40.c
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018, hathach (tinyusb.org)
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* Copyright (c) 2020, Jim Mussared
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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 "py/runtime.h"
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#include "tusb.h"
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#include "fsl_device_registers.h"
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#include "fsl_gpio.h"
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#include "fsl_iomuxc.h"
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#include "fsl_clock.h"
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#include "fsl_lpuart.h"
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#include "clock_config.h"
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#define LED_STATE_ON (0)
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volatile uint32_t systick_ms = 0;
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const uint8_t dcd_data[] = { 0x00 };
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void board_led_write(bool state);
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void board_init(void) {
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// Init clock
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BOARD_BootClockRUN();
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SystemCoreClockUpdate();
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// Enable IOCON clock
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CLOCK_EnableClock(kCLOCK_Iomuxc);
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// 1ms tick timer
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SysTick_Config(SystemCoreClock / 1000);
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// LED
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IOMUXC_SetPinMux(MICROPY_HW_LED_PINMUX, 0U);
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IOMUXC_SetPinConfig(MICROPY_HW_LED_PINMUX, 0x10B0U);
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gpio_pin_config_t led_config = { kGPIO_DigitalOutput, 0, kGPIO_NoIntmode };
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GPIO_PinInit(MICROPY_HW_LED_PORT, MICROPY_HW_LED_PIN, &led_config);
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board_led_write(true);
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//------------- USB0 -------------//
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// Clock
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CLOCK_EnableUsbhs0PhyPllClock(kCLOCK_Usbphy480M, 480000000U);
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CLOCK_EnableUsbhs0Clock(kCLOCK_Usb480M, 480000000U);
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#ifdef USBPHY1
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USBPHY_Type *usb_phy = USBPHY1;
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#else
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USBPHY_Type *usb_phy = USBPHY;
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#endif
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// Enable PHY support for Low speed device + LS via FS Hub
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usb_phy->CTRL |= USBPHY_CTRL_SET_ENUTMILEVEL2_MASK | USBPHY_CTRL_SET_ENUTMILEVEL3_MASK;
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// Enable all power for normal operation
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usb_phy->PWD = 0;
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// TX Timing
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uint32_t phytx = usb_phy->TX;
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phytx &= ~(USBPHY_TX_D_CAL_MASK | USBPHY_TX_TXCAL45DM_MASK | USBPHY_TX_TXCAL45DP_MASK);
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phytx |= USBPHY_TX_D_CAL(0x0C) | USBPHY_TX_TXCAL45DP(0x06) | USBPHY_TX_TXCAL45DM(0x06);
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usb_phy->TX = phytx;
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// USB1
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// CLOCK_EnableUsbhs1PhyPllClock(kCLOCK_Usbphy480M, 480000000U);
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// CLOCK_EnableUsbhs1Clock(kCLOCK_Usb480M, 480000000U);
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}
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void board_led_write(bool state) {
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GPIO_PinWrite(MICROPY_HW_LED_PORT, MICROPY_HW_LED_PIN, state ? LED_STATE_ON : (1 - LED_STATE_ON));
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}
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void SysTick_Handler(void) {
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systick_ms++;
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}
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void USB_OTG1_IRQHandler(void) {
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tud_isr(0);
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tud_task();
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}
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void USB_OTG2_IRQHandler(void) {
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tud_isr(1);
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tud_task();
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}
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