diff options
Diffstat (limited to 'tinyusb/hw/bsp/lpcxpresso51u68/lpcxpresso51u68.c')
| -rwxr-xr-x | tinyusb/hw/bsp/lpcxpresso51u68/lpcxpresso51u68.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/tinyusb/hw/bsp/lpcxpresso51u68/lpcxpresso51u68.c b/tinyusb/hw/bsp/lpcxpresso51u68/lpcxpresso51u68.c new file mode 100755 index 00000000..6bade774 --- /dev/null +++ b/tinyusb/hw/bsp/lpcxpresso51u68/lpcxpresso51u68.c @@ -0,0 +1,179 @@ +/* + * 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 "../board.h" +#include "fsl_device_registers.h" +#include "fsl_gpio.h" +#include "fsl_power.h" +#include "fsl_iocon.h" + +//--------------------------------------------------------------------+ +// Forward USB interrupt events to TinyUSB IRQ Handler +//--------------------------------------------------------------------+ +void USB0_IRQHandler(void) +{ + tud_int_handler(0); +} + +//--------------------------------------------------------------------+ +// MACRO TYPEDEF CONSTANT ENUM +//--------------------------------------------------------------------+ +#define LED_PORT 0 +#define LED_PIN 29 +#define LED_STATE_ON 0 + +// WAKE button +#define BUTTON_PORT 0 +#define BUTTON_PIN 24 + +// IOCON pin mux +#define IOCON_PIO_DIGITAL_EN 0x80u /*!< Enables digital function */ +#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_OPENDRAIN_DI 0x00u /*!< Open drain is disabled */ +#define IOCON_PIO_SLEW_STANDARD 0x00u /*!< Standard mode, output slew rate control is enabled */ + +/**************************************************************** +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 */ + CLOCK_SetClkDiv(kCLOCK_DivSystickClk, 0U, true); /*!< Reset SYSTICKCLKDIV divider counter and halt it */ + CLOCK_SetClkDiv(kCLOCK_DivSystickClk, 1U, false); /*!< Set SYSTICKCLKDIV 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); + + // Enable GPIO0 clock + CLOCK_EnableClock(kCLOCK_Gpio0); + + // Init 96 MHz clock + BootClockFROHF96M(); + +#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 + + GPIO_PortInit(GPIO, LED_PORT); + GPIO_PortInit(GPIO, BUTTON_PORT); + + // LED + gpio_pin_config_t const led_config = { kGPIO_DigitalOutput, 0}; + GPIO_PinInit(GPIO, LED_PORT, LED_PIN, &led_config); + board_led_write(true); + + // Button + gpio_pin_config_t const button_config = { kGPIO_DigitalInput, 0}; + GPIO_PinInit(GPIO, BUTTON_PORT, BUTTON_PIN, &button_config); + + // USB + const uint32_t port1_pin6_config = ( + IOCON_PIO_FUNC7 | /* Pin is configured as USB0_VBUS */ + IOCON_PIO_MODE_INACT | /* No addition pin function */ + IOCON_PIO_INV_DI | /* Input function is not inverted */ + IOCON_PIO_DIGITAL_EN | /* Enables digital function */ + IOCON_PIO_INPFILT_OFF | /* Input filter disabled */ + IOCON_PIO_OPENDRAIN_DI /* Open drain is disabled */ + ); + IOCON_PinMuxSet(IOCON, 1, 6, port1_pin6_config); /* PORT1 PIN6 (coords: 26) is configured as USB0_VBUS */ + + POWER_DisablePD(kPDRUNCFG_PD_USB0_PHY); /*Turn on USB Phy */ + CLOCK_EnableUsbfs0Clock(kCLOCK_UsbSrcFro, CLOCK_GetFreq(kCLOCK_FroHf)); /* enable USB IP clock */ +} + +//--------------------------------------------------------------------+ +// 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 1-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) +{ + (void) buf; (void) 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 |