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/*
* The MIT License (MIT)
*
* Copyright (c) 2018, hathach (tinyusb.org)
*
* 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 "fsl_device_registers.h"
#include "fsl_gpio.h"
#include "fsl_power.h"
#include "fsl_iocon.h"
#include "fsl_usart.h"
#include "bsp/board.h"
#include "board.h"
//--------------------------------------------------------------------+
// MACRO TYPEDEF CONSTANT ENUM
//--------------------------------------------------------------------+
// IOCON pin mux
#define IOCON_PIO_DIGITAL_EN 0x80u // Enables digital function
#define IOCON_PIO_FUNC0 0x00u
#define IOCON_PIO_FUNC1 0x01u // Selects pin function 1
#define IOCON_PIO_FUNC7 0x07u // Selects pin function 7
#define IOCON_PIO_INPFILT_OFF 0x0100u // Input filter disabled
#define IOCON_PIO_INV_DI 0x00u // Input function is not inverted
#define IOCON_PIO_MODE_INACT 0x00u // No addition pin function
#define IOCON_PIO_MODE_PULLUP 0x10u
#define IOCON_PIO_OPENDRAIN_DI 0x00u // Open drain is disabled
#define IOCON_PIO_SLEW_STANDARD 0x00u // Standard mode, output slew rate control is enabled
// Digital pin function n enabled
#define IOCON_PIO_DIG_FUNC0_EN (IOCON_PIO_DIGITAL_EN | IOCON_PIO_INPFILT_OFF | IOCON_PIO_FUNC0)
#define IOCON_PIO_DIG_FUNC1_EN (IOCON_PIO_DIGITAL_EN | IOCON_PIO_INPFILT_OFF | IOCON_PIO_FUNC1)
#define IOCON_PIO_DIG_FUNC4_EN (IOCON_PIO_DIGITAL_EN | IOCON_PIO_INPFILT_OFF | IOCON_PIO_FUNC4)
#define IOCON_PIO_DIG_FUNC7_EN (IOCON_PIO_DIGITAL_EN | IOCON_PIO_INPFILT_OFF | IOCON_PIO_FUNC7)
//--------------------------------------------------------------------+
// Forward USB interrupt events to TinyUSB IRQ Handler
//--------------------------------------------------------------------+
void USB0_IRQHandler(void)
{
tud_int_handler(0);
}
void USB1_IRQHandler(void)
{
tud_int_handler(1);
}
/****************************************************************
name: BOARD_BootClockFROHF96M
outputs:
- {id: SYSTICK_clock.outFreq, value: 96 MHz}
- {id: System_clock.outFreq, value: 96 MHz}
settings:
- {id: SYSCON.MAINCLKSELA.sel, value: SYSCON.fro_hf}
sources:
- {id: SYSCON.fro_hf.outFreq, value: 96 MHz}
******************************************************************/
void BootClockFROHF96M(void)
{
/*!< Set up the clock sources */
/*!< Set up FRO */
POWER_DisablePD(kPDRUNCFG_PD_FRO_EN); /*!< Ensure FRO is on */
CLOCK_AttachClk(kFRO12M_to_MAIN_CLK); /*!< Switch to FRO 12MHz first to ensure we can change voltage without
accidentally being below the voltage for current speed */
POWER_SetVoltageForFreq(96000000U); /*!< Set voltage for the one of the fastest clock outputs: System clock output */
CLOCK_SetFLASHAccessCyclesForFreq(96000000U); /*!< Set FLASH wait states for core */
CLOCK_SetupFROClocking(96000000U); /*!< Set up high frequency FRO output to selected frequency */
/*!< Set up dividers */
CLOCK_SetClkDiv(kCLOCK_DivAhbClk, 1U, false); /*!< Set AHBCLKDIV divider to value 1 */
/*!< Set up clock selectors - Attach clocks to the peripheries */
CLOCK_AttachClk(kFRO_HF_to_MAIN_CLK); /*!< Switch MAIN_CLK to FRO_HF */
/*!< Set SystemCoreClock variable. */
SystemCoreClock = 96000000U;
}
void board_init(void)
{
// Enable IOCON clock
CLOCK_EnableClock(kCLOCK_Iocon);
// Init 96 MHz clock
BootClockFROHF96M();
// 1ms tick timer
SysTick_Config(SystemCoreClock / 1000);
#if 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
// Init all GPIO ports 54114 only has 2 ports.
GPIO_PortInit(GPIO, LED_PORT);
GPIO_PortInit(GPIO, BUTTON_PORT);
// LED
IOCON_PinMuxSet(IOCON, LED_PORT, LED_PIN, IOCON_PIO_DIG_FUNC0_EN);
gpio_pin_config_t const led_config = { kGPIO_DigitalOutput, 0};
GPIO_PinInit(GPIO, LED_PORT, LED_PIN, &led_config);
board_led_write(0);
// Button
IOCON_PinMuxSet(IOCON, BUTTON_PORT, BUTTON_PIN, IOCON_PIO_DIG_FUNC0_EN | IOCON_PIO_MODE_PULLUP);
gpio_pin_config_t const button_config = { kGPIO_DigitalInput, 0};
GPIO_PinInit(GPIO, BUTTON_PORT, BUTTON_PIN, &button_config);
#ifdef UART_DEV
// UART
IOCON_PinMuxSet(IOCON, UART_RX_PINMUX);
IOCON_PinMuxSet(IOCON, UART_TX_PINMUX);
// Enable UART when debug log is on
CLOCK_AttachClk(kFRO12M_to_FLEXCOMM0);
usart_config_t uart_config;
USART_GetDefaultConfig(&uart_config);
uart_config.baudRate_Bps = CFG_BOARD_UART_BAUDRATE;
uart_config.enableTx = true;
uart_config.enableRx = true;
USART_Init(UART_DEV, &uart_config, 12000000);
#endif
// USB
IOCON_PinMuxSet(IOCON, USB0_VBUS_PINMUX);
#if defined(FSL_FEATURE_SOC_USBHSD_COUNT) && FSL_FEATURE_SOC_USBHSD_COUNT
// LPC546xx and LPC540xx has OTG 1 FS + 1 HS rhports
#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE
// Port0 is Full Speed
POWER_DisablePD(kPDRUNCFG_PD_USB0_PHY); /*< Turn on USB Phy */
CLOCK_SetClkDiv(kCLOCK_DivUsb0Clk, 1, false);
CLOCK_AttachClk(kFRO_HF_to_USB0_CLK);
/*According to reference mannual, device mode setting has to be set by access usb host register */
CLOCK_EnableClock(kCLOCK_Usbhsl0); /* enable usb0 host clock */
USBFSH->PORTMODE |= USBFSH_PORTMODE_DEV_ENABLE_MASK;
CLOCK_DisableClock(kCLOCK_Usbhsl0); /* disable usb0 host clock */
CLOCK_EnableUsbfs0DeviceClock(kCLOCK_UsbSrcFro, CLOCK_GetFroHfFreq());
#endif
#if CFG_TUSB_RHPORT1_MODE & OPT_MODE_DEVICE
// Port1 is High Speed
POWER_DisablePD(kPDRUNCFG_PD_USB1_PHY);
/*According to reference mannual, device mode setting has to be set by access usb host register */
CLOCK_EnableClock(kCLOCK_Usbh1); /* enable usb1 host clock */
USBHSH->PORTMODE |= USBHSH_PORTMODE_DEV_ENABLE_MASK;
CLOCK_DisableClock(kCLOCK_Usbh1); /* enable usb1 host clock */
CLOCK_EnableUsbhs0DeviceClock(kCLOCK_UsbSrcUsbPll, 0U);
#endif
#else
// LPC5411x series only has full speed device
POWER_DisablePD(kPDRUNCFG_PD_USB0_PHY); // Turn on USB Phy
CLOCK_EnableUsbfs0Clock(kCLOCK_UsbSrcFro, CLOCK_GetFreq(kCLOCK_FroHf)); /* enable USB IP clock */
#endif
}
//--------------------------------------------------------------------+
// Board porting API
//--------------------------------------------------------------------+
void board_led_write(bool state)
{
GPIO_PinWrite(GPIO, LED_PORT, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
}
uint32_t board_button_read(void)
{
// active low
return BUTTON_STATE_ACTIVE == GPIO_PinRead(GPIO, BUTTON_PORT, BUTTON_PIN);
}
int board_uart_read(uint8_t* buf, int len)
{
(void) buf; (void) len;
return 0;
}
int board_uart_write(void const * buf, int len)
{
USART_WriteBlocking(UART_DEV, (uint8_t *)buf, len);
return 0;
}
#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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