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/*
* The MIT License (MIT)
*
* Copyright (c) 2018, hathach (tinyusb.org)
* Copyright (c) 2020, Koji Kitayama
*
* 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.
*
* This file is part of the TinyUSB stack.
*/
#include "../board.h"
#include "board.h"
#include "fsl_smc.h"
#include "fsl_gpio.h"
#include "fsl_port.h"
#include "fsl_clock.h"
#include "fsl_lpuart.h"
/*******************************************************************************
* Definitions
******************************************************************************/
#define SIM_OSC32KSEL_LPO_CLK 3U /*!< OSC32KSEL select: LPO clock */
#define SOPT5_LPUART1RXSRC_LPUART_RX 0x00u /*!<@brief LPUART1 Receive Data Source Select: LPUART_RX pin */
#define SOPT5_LPUART1TXSRC_LPUART_TX 0x00u /*!<@brief LPUART1 Transmit Data Source Select: LPUART_TX pin */
#define BOARD_BOOTCLOCKRUN_CORE_CLOCK 48000000U /*!< Core clock frequency: 48000000Hz */
/*******************************************************************************
* Variables
******************************************************************************/
/* System clock frequency. */
extern uint32_t SystemCoreClock;
/*******************************************************************************
* Variables for BOARD_BootClockRUN configuration
******************************************************************************/
const mcglite_config_t mcgliteConfig_BOARD_BootClockRUN = {
.outSrc = kMCGLITE_ClkSrcHirc, /* MCGOUTCLK source is HIRC */
.irclkEnableMode = kMCGLITE_IrclkEnable, /* MCGIRCLK enabled, MCGIRCLK disabled in STOP mode */
.ircs = kMCGLITE_Lirc8M, /* Slow internal reference (LIRC) 8 MHz clock selected */
.fcrdiv = kMCGLITE_LircDivBy1, /* Low-frequency Internal Reference Clock Divider: divided by 1 */
.lircDiv2 = kMCGLITE_LircDivBy1, /* Second Low-frequency Internal Reference Clock Divider: divided by 1 */
.hircEnableInNotHircMode = true, /* HIRC source is enabled */
};
const sim_clock_config_t simConfig_BOARD_BootClockRUN = {
.er32kSrc = SIM_OSC32KSEL_LPO_CLK, /* OSC32KSEL select: LPO clock */
.clkdiv1 = 0x10000U, /* SIM_CLKDIV1 - OUTDIV1: /1, OUTDIV4: /2 */
};
/*******************************************************************************
* Code for BOARD_BootClockRUN configuration
******************************************************************************/
void BOARD_BootClockRUN(void)
{
/* Set the system clock dividers in SIM to safe value. */
CLOCK_SetSimSafeDivs();
/* Set MCG to HIRC mode. */
CLOCK_SetMcgliteConfig(&mcgliteConfig_BOARD_BootClockRUN);
/* Set the clock configuration in SIM module. */
CLOCK_SetSimConfig(&simConfig_BOARD_BootClockRUN);
/* Set SystemCoreClock variable. */
SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK;
}
//--------------------------------------------------------------------+
// Forward USB interrupt events to TinyUSB IRQ Handler
//--------------------------------------------------------------------+
void USB0_IRQHandler(void)
{
tud_int_handler(0);
}
void board_init(void)
{
/* Enable port clocks for GPIO pins */
CLOCK_EnableClock(kCLOCK_PortA);
CLOCK_EnableClock(kCLOCK_PortB);
CLOCK_EnableClock(kCLOCK_PortC);
CLOCK_EnableClock(kCLOCK_PortD);
CLOCK_EnableClock(kCLOCK_PortE);
gpio_pin_config_t led_config = { kGPIO_DigitalOutput, 1 };
GPIO_PinInit(GPIOA, 1U, &led_config);
PORT_SetPinMux(PORTA, 1U, kPORT_MuxAsGpio);
led_config.outputLogic = 0;
GPIO_PinInit(GPIOA, 2U, &led_config);
PORT_SetPinMux(PORTA, 2U, kPORT_MuxAsGpio);
#ifdef BUTTON_PIN
gpio_pin_config_t button_config = { kGPIO_DigitalInput, 0 };
GPIO_PinInit(BUTTON_GPIO, BUTTON_PIN, &button_config);
const port_pin_config_t BUTTON_CFG = {
kPORT_PullUp,
kPORT_FastSlewRate,
kPORT_PassiveFilterDisable,
kPORT_LowDriveStrength,
kPORT_MuxAsGpio
};
PORT_SetPinConfig(BUTTON_PORT, BUTTON_PIN, &BUTTON_CFG);
#endif
/* PORTC3 is configured as LPUART0_RX */
PORT_SetPinMux(PORTC, 3U, kPORT_MuxAlt3);
/* PORTA2 (pin 24) is configured as LPUART0_TX */
PORT_SetPinMux(PORTE, 0U, kPORT_MuxAlt3);
SIM->SOPT5 = ((SIM->SOPT5 &
/* Mask bits to zero which are setting */
(~(SIM_SOPT5_LPUART1TXSRC_MASK | SIM_SOPT5_LPUART1RXSRC_MASK)))
/* LPUART0 Transmit Data Source Select: LPUART0_TX pin. */
| SIM_SOPT5_LPUART1TXSRC(SOPT5_LPUART1TXSRC_LPUART_TX)
/* LPUART0 Receive Data Source Select: LPUART_RX pin. */
| SIM_SOPT5_LPUART1RXSRC(SOPT5_LPUART1RXSRC_LPUART_RX));
BOARD_BootClockRUN();
SystemCoreClockUpdate();
CLOCK_SetLpuart1Clock(1);
#if CFG_TUSB_OS == OPT_OS_NONE
// 1ms tick timer
SysTick_Config(SystemCoreClock / 1000);
#elif CFG_TUSB_OS == OPT_OS_FREERTOS
// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
NVIC_SetPriority(USB0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY );
#endif
lpuart_config_t uart_config;
LPUART_GetDefaultConfig(&uart_config);
uart_config.baudRate_Bps = CFG_BOARD_UART_BAUDRATE;
uart_config.enableTx = true;
uart_config.enableRx = true;
LPUART_Init(UART_PORT, &uart_config, CLOCK_GetFreq(kCLOCK_McgIrc48MClk));
// USB
CLOCK_EnableUsbfs0Clock(kCLOCK_UsbSrcIrc48M, 48000000U);
}
//--------------------------------------------------------------------+
// Board porting API
//--------------------------------------------------------------------+
void board_led_write(bool state)
{
if (state) {
LED_GPIO->PDDR |= GPIO_FIT_REG((1UL << LED_PIN));
} else {
LED_GPIO->PDDR &= GPIO_FIT_REG(~(1UL << LED_PIN));
}
// GPIO_PinWrite(GPIOA, 1, state ? LED_STATE_ON : (1-LED_STATE_ON) );
// GPIO_PinWrite(GPIOA, 2, state ? (1-LED_STATE_ON) : LED_STATE_ON );
}
uint32_t board_button_read(void)
{
#ifdef BUTTON_PIN
return BUTTON_STATE_ACTIVE == GPIO_PinRead(BUTTON_GPIO, BUTTON_PIN);
#else
return 0;
#endif
}
int board_uart_read(uint8_t* buf, int len)
{
LPUART_ReadBlocking(UART_PORT, buf, len);
return len;
}
int board_uart_write(void const * buf, int len)
{
LPUART_WriteBlocking(UART_PORT, (uint8_t const*) buf, len);
return len;
}
#if CFG_TUSB_OS == OPT_OS_NONE
volatile uint32_t system_ticks = 0;
void SysTick_Handler(void)
{
system_ticks++;
}
uint32_t board_millis(void)
{
return system_ticks;
}
#endif
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