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Diffstat (limited to 'tinyusb/hw/bsp/lpc15/family.c')
-rwxr-xr-x | tinyusb/hw/bsp/lpc15/family.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/tinyusb/hw/bsp/lpc15/family.c b/tinyusb/hw/bsp/lpc15/family.c new file mode 100755 index 00000000..7f5984a3 --- /dev/null +++ b/tinyusb/hw/bsp/lpc15/family.c @@ -0,0 +1,130 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2019 Ha Thach (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 "chip.h" +#include "bsp/board.h" +#include "board.h" + +//--------------------------------------------------------------------+ +// Forward USB interrupt events to TinyUSB IRQ Handler +//--------------------------------------------------------------------+ +void USB_IRQHandler(void) +{ + tud_int_handler(0); +} + +//--------------------------------------------------------------------+ +// MACRO TYPEDEF CONSTANT ENUM +//--------------------------------------------------------------------+ + +/* System oscillator rate and RTC oscillator rate */ +const uint32_t OscRateIn = XTAL_OscRateIn; +const uint32_t RTCOscRateIn = XTAL_RTCOscRateIn; + +// Invoked by startup code +void SystemInit(void) +{ + Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_SRAM1); + Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_SRAM2); + Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_IOCON); + Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_SWM); + Chip_SYSCTL_PeriphReset(RESET_IOCON); + + board_lpc15_pinmux_swm_init(); + + Chip_SetupXtalClocking(); +} + +void board_init(void) +{ + SystemCoreClockUpdate(); + + // 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 + + Chip_GPIO_Init(LPC_GPIO); + + // LED + Chip_GPIO_SetPinDIROutput(LPC_GPIO, LED_PORT, LED_PIN); + + // Button + Chip_GPIO_SetPinDIRInput(LPC_GPIO, BUTTON_PORT, BUTTON_PIN); + + // UART + Chip_Clock_SetUARTBaseClockRate(Chip_Clock_GetMainClockRate(), false); + Chip_UART_Init(UART_PORT); + Chip_UART_ConfigData(UART_PORT, UART_CFG_DATALEN_8 | UART_CFG_PARITY_NONE | UART_CFG_STOPLEN_1); + Chip_UART_SetBaud(UART_PORT, CFG_BOARD_UART_BAUDRATE); + Chip_UART_Enable(UART_PORT); + Chip_UART_TXEnable(UART_PORT); + + // USB: Setup PLL clock, and power + Chip_USB_Init(); +} + +//--------------------------------------------------------------------+ +// Board porting API +//--------------------------------------------------------------------+ + +void board_led_write(bool state) +{ + Chip_GPIO_SetPinState(LPC_GPIO, LED_PORT, LED_PIN, state); +} + +uint32_t board_button_read(void) +{ + // active low + return Chip_GPIO_GetPinState(LPC_GPIO, BUTTON_PORT, BUTTON_PIN) ? 0 : 1; +} + +int board_uart_read(uint8_t* buf, int len) +{ + (void) buf; (void) len; + return 0; +} + +int board_uart_write(void const * buf, int len) +{ + return Chip_UART_SendBlocking(UART_PORT, buf, 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 |