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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.
*/
/* metadata:
manufacturer: NXP
*/
#include "chip.h"
#include "bsp/board_api.h"
#include "board.h"
extern void USB0_IRQHandler(void);
extern void USB1_IRQHandler(void);
extern void SysTick_Handler(void);
void SystemInit(void);
//--------------------------------------------------------------------+
// USB Interrupt Handler
//--------------------------------------------------------------------+
void USB0_IRQHandler(void) {
tusb_int_handler(0, true);
}
void USB1_IRQHandler(void) {
tusb_int_handler(1, true);
}
//--------------------------------------------------------------------+
// MACRO TYPEDEF CONSTANT ENUM DECLARATION
//--------------------------------------------------------------------+
/* System configuration variables used by chip driver */
const uint32_t OscRateIn = 12000000;
const uint32_t ExtRateIn = 0;
// Invoked by startup code
void SystemInit(void) {
#ifdef __USE_LPCOPEN
extern void (*const g_pfnVectors[])(void);
unsigned int *pSCB_VTOR = (unsigned int *) 0xE000ED08;
*pSCB_VTOR = (unsigned int) g_pfnVectors;
#endif
board_lpc18_pinmux();
#ifdef TRACE_ETM
// Trace clock is limited to 60MHz, limit CPU clock to 120MHz
Chip_SetupCoreClock(CLKIN_CRYSTAL, 120000000UL, true);
board_trace_pinmux(); // after clock setup so TRACECLK starts at its final frequency
#else
// CPU clock max to 180 Mhz
Chip_SetupCoreClock(CLKIN_CRYSTAL, MAX_CLOCK_FREQ, true);
#endif
}
void board_init(void) {
SystemCoreClockUpdate();
#if CFG_TUSB_OS == OPT_OS_NONE
// 1ms tick timer
SysTick_Config(SystemCoreClock / 1000);
#elif CFG_TUSB_OS == OPT_OS_FREERTOS
// Explicitly disable systick to prevent its ISR from running before scheduler start
SysTick->CTRL &= ~1U;
// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
NVIC_SetPriority(USB0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
NVIC_SetPriority(USB1_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
#endif
Chip_GPIO_Init(LPC_GPIO_PORT);
// LED
Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, LED_PORT, LED_PIN);
// Button
Chip_GPIO_SetPinDIRInput(LPC_GPIO_PORT, BUTTON_PORT, BUTTON_PIN);
//------------- UART -------------//
Chip_UART_Init(UART_DEV);
Chip_UART_SetBaud(UART_DEV, CFG_BOARD_UART_BAUDRATE);
Chip_UART_ConfigData(UART_DEV, UART_LCR_WLEN8 | UART_LCR_SBS_1BIT | UART_LCR_PARITY_DIS);
Chip_UART_TXEnable(UART_DEV);
//------------- USB -------------//
Chip_USB0_Init();
Chip_USB1_Init();
}
//--------------------------------------------------------------------+
// Board porting API
//--------------------------------------------------------------------+
void board_led_write(bool state) {
Chip_GPIO_SetPinState(LPC_GPIO_PORT, LED_PORT, LED_PIN, state);
}
uint32_t board_button_read(void) {
// active low
return Chip_GPIO_GetPinState(LPC_GPIO_PORT, BUTTON_PORT, BUTTON_PIN) ? 0 : 1;
}
int board_uart_read(uint8_t *buf, int len) {
return Chip_UART_Read(UART_DEV, buf, len);
}
int board_uart_write(void const *buf, int len) {
uint8_t const *buf8 = (uint8_t const *) buf;
int count = 0;
while (count < len) {
if (Chip_UART_ReadLineStatus(UART_DEV) & UART_LSR_THRE) {
Chip_UART_SendByte(UART_DEV, buf8[count]);
count++;
} else {
break;
}
}
return count;
}
#if CFG_TUSB_OS == OPT_OS_NONE
volatile uint32_t system_ticks = 0;
void SysTick_Handler(void) {
system_ticks++;
}
uint32_t tusb_time_millis_api(void) {
return system_ticks;
}
#endif
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