163 lines
4.3 KiB
C
163 lines
4.3 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018, hathach (tinyusb.org)
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* Copyright (c) 2020, Koji Kitayama
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "bsp/board_api.h"
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#include "board.h"
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#include "fsl_device_registers.h"
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#include "fsl_gpio.h"
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#include "fsl_port.h"
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#include "fsl_clock.h"
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#include "fsl_uart.h"
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#include "fsl_sysmpu.h"
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#include "board/clock_config.h"
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#include "board/pin_mux.h"
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//--------------------------------------------------------------------+
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// Forward USB interrupt events to TinyUSB IRQ Handler
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//--------------------------------------------------------------------+
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void USB0_IRQHandler(void) {
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#if CFG_TUH_ENABLED
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tuh_int_handler(0);
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#endif
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#if CFG_TUD_ENABLED
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tud_int_handler(0);
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#endif
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}
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void board_init(void) {
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BOARD_InitBootPins();
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BOARD_BootClockRUN();
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SystemCoreClockUpdate();
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SYSMPU_Enable(SYSMPU, 0);
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#if CFG_TUSB_OS == OPT_OS_NONE
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// 1ms tick timer
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SysTick_Config(SystemCoreClock / 1000);
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#elif CFG_TUSB_OS == OPT_OS_FREERTOS
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// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
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NVIC_SetPriority(USB0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY );
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#endif
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// LED
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gpio_pin_config_t led_config = { kGPIO_DigitalOutput, 0 };
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GPIO_PinInit(LED_PORT, LED_PIN, &led_config);
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board_led_write(false);
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#if defined(BUTTON_PORT) && defined(BUTTON_PIN)
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gpio_pin_config_t button_config = { kGPIO_DigitalInput, 0 };
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GPIO_PinInit(BUTTON_PORT, BUTTON_PIN, &button_config);
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#endif
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#ifdef UART_DEV
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const uart_config_t uart_config = {
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.baudRate_Bps = 115200UL,
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.parityMode = kUART_ParityDisabled,
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.stopBitCount = kUART_OneStopBit,
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.txFifoWatermark = 0U,
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.rxFifoWatermark = 1U,
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.idleType = kUART_IdleTypeStartBit,
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.enableTx = true,
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.enableRx = true
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};
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UART_Init(UART_DEV, &uart_config, UART_CLOCK);
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#endif
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// USB
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// USB clock is configured in BOARD_BootClockRUN()
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}
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//--------------------------------------------------------------------+
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// Board porting API
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//--------------------------------------------------------------------+
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void board_led_write(bool state) {
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GPIO_PinWrite(LED_PORT, LED_PIN, state ? LED_STATE_ON : (1 - LED_STATE_ON));
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}
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uint32_t board_button_read(void) {
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#if defined(BUTTON_PORT) && defined(BUTTON_PIN)
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return BUTTON_STATE_ACTIVE == GPIO_PinRead(BUTTON_PORT, BUTTON_PIN);
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#else
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return 0;
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#endif
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}
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int board_uart_read(uint8_t *buf, int len) {
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(void) buf;
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(void) len;
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#ifdef UART_DEV
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// Read blocking will block until there is data
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// UART_ReadBlocking(UART_DEV, buf, len);
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// return len;
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return 0;
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#else
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return 0;
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#endif
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}
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int board_uart_write(void const *buf, int len) {
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(void) buf;
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(void) len;
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#ifdef UART_DEV
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UART_WriteBlocking(UART_DEV, (uint8_t const*) buf, len);
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return len;
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#else
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return 0;
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#endif
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}
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#if CFG_TUSB_OS == OPT_OS_NONE
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volatile uint32_t system_ticks = 0;
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void SysTick_Handler(void) {
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system_ticks++;
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}
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uint32_t board_millis(void) {
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return system_ticks;
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}
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#endif
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#ifndef __ICCARM__
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// Implement _start() since we use linker flag '-nostartfiles'.
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// Requires defined __STARTUP_CLEAR_BSS,
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extern int main(void);
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TU_ATTR_UNUSED void _start(void) {
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// called by startup code
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main();
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while (1) {}
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}
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#ifdef __clang__
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void _exit (int __status) {
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while (1) {}
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}
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#endif
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#endif
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