/* metadata: name: LPCXpresso11U37 url: https://www.nxp.com/design/design-center/development-boards-and-designs/OM13074 */ #ifndef BOARD_H #define BOARD_H #define LED_PORT 1 #define LED_PIN 24 #define LED_STATE_ON 0 // Wake up Switch #define BUTTON_PORT 0 #define BUTTON_PIN 16 #define BUTTON_STATE_ACTIVE 0 /* System oscillator rate and RTC oscillator rate */ const uint32_t OscRateIn = 12000000; const uint32_t ExtRateIn = 0; /* Pin muxing table, only items that need changing from their default pin state are in this table. Not every pin is mapped. */ /* IOCON pin definitions for pin muxing */ typedef struct { uint32_t port : 8; /* Pin port */ uint32_t pin : 8; /* Pin number */ uint32_t modefunc : 16; /* Function and mode */ } PINMUX_GRP_T; static const PINMUX_GRP_T pinmuxing[] = { {0, 3, (IOCON_FUNC1 | IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, // USB VBUS {0, 6, (IOCON_FUNC1 | IOCON_MODE_INACT)}, /* PIO0_6 used for USB_CONNECT */ {0, 18, (IOCON_FUNC1 | IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, // UART0 RX {0, 19, (IOCON_FUNC1 | IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, // UART0 TX }; /* Setup system clocking */ static inline void Chip_SetupXtalClocking(void) { volatile int i; /* Powerup main oscillator */ Chip_SYSCTL_PowerUp(SYSCTL_POWERDOWN_SYSOSC_PD); /* Wait 200us for OSC to be stablized, no status indication, dummy wait. */ for (i = 0; i < 0x100; i++) {} /* Set system PLL input to main oscillator */ Chip_Clock_SetSystemPLLSource(SYSCTL_PLLCLKSRC_MAINOSC); /* Power down PLL to change the PLL divider ratio */ Chip_SYSCTL_PowerDown(SYSCTL_POWERDOWN_SYSPLL_PD); /* Setup PLL for main oscillator rate (FCLKIN = 12MHz) * 4 = 48MHz MSEL = 3 (this is pre-decremented), PSEL = 1 (for P = 2) FCLKOUT = FCLKIN * (MSEL + 1) = 12MHz * 4 = 48MHz FCCO = FCLKOUT * 2 * P = 48MHz * 2 * 2 = 192MHz (within FCCO range) */ Chip_Clock_SetupSystemPLL(3, 1); /* Powerup system PLL */ Chip_SYSCTL_PowerUp(SYSCTL_POWERDOWN_SYSPLL_PD); /* Wait for PLL to lock */ while (!Chip_Clock_IsSystemPLLLocked()) {} /* Set system clock divider to 1 */ Chip_Clock_SetSysClockDiv(1); /* Setup FLASH access to 3 clocks */ Chip_FMC_SetFLASHAccess(FLASHTIM_50MHZ_CPU); /* Set main clock source to the system PLL. This will drive 48MHz for the main clock and 48MHz for the system clock */ Chip_Clock_SetMainClockSource(SYSCTL_MAINCLKSRC_PLLOUT); /* Set USB PLL input to main oscillator */ Chip_Clock_SetUSBPLLSource(SYSCTL_PLLCLKSRC_MAINOSC); /* Setup USB PLL (FCLKIN = 12MHz) * 4 = 48MHz MSEL = 3 (this is pre-decremented), PSEL = 1 (for P = 2) FCLKOUT = FCLKIN * (MSEL + 1) = 12MHz * 4 = 48MHz FCCO = FCLKOUT * 2 * P = 48MHz * 2 * 2 = 192MHz (within FCCO range) */ Chip_Clock_SetupUSBPLL(3, 1); /* Powerup USB PLL */ Chip_SYSCTL_PowerUp(SYSCTL_POWERDOWN_USBPLL_PD); /* Wait for PLL to lock */ while (!Chip_Clock_IsUSBPLLLocked()) {} } static inline void Chip_USB_Init(void) { /* enable USB main clock */ Chip_Clock_SetUSBClockSource(SYSCTL_USBCLKSRC_PLLOUT, 1); /* Enable AHB clock to the USB block and USB RAM. */ Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_USB); Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_USBRAM); /* power UP USB Phy */ Chip_SYSCTL_PowerUp(SYSCTL_POWERDOWN_USBPAD_PD); } #endif