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/*
* 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
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