micropython/ports/mimxrt/board_init.c

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