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+/*
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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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+ * This file is part of the TinyUSB stack.
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+ */
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+
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+#include "../board.h"
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+#include "board.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_lpuart.h"
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+
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+#include "clock_config.h"
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+
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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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+{
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+ tud_int_handler(0);
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+}
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+
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+//--------------------------------------------------------------------+
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+// MACRO TYPEDEF CONSTANT ENUM DECLARATION
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+//--------------------------------------------------------------------+
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+// LED
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+/*
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+//#define LED_PINMUX IOMUXC_GPIO_AD_B0_09_GPIO1_IO09
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+#define LED_PORT GPIOB
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+#define LED_PIN_CLOCK kCLOCK_PortD
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+#define LED_PIN_PORT PORTD
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+#define LED_PIN 5U
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+#define LED_PIN_FUNCTION kPORT_MuxAsGpio
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+#define LED_STATE_ON 0
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+
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+// UART
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+#define UART_PORT LPUART0
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+#define UART_PIN_CLOCK kCLOCK_PortA
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+#define UART_PIN_PORT PORTA
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+#define UART_PIN_RX 1u
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+#define UART_PIN_TX 2u
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+#define UART_PIN_FUNCTION kPORT_MuxAlt2
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+*/
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+//#define SOPT5_UART0RXSRC_UART_RX 0x00u /*!< UART0 receive data source select: UART0_RX pin */
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+//#define SOPT5_UART0TXSRC_UART_TX 0x00u /*!< UART0 transmit data source select: UART0_TX pin */
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+
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+//const uint8_t dcd_data[] = { 0x00 };
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+
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+void board_init(void)
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+{
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+ /* Port A Clock Gate Control: Clock enabled */
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+ CLOCK_EnableClock(kCLOCK_PortA);
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+ /* Port B Clock Gate Control: Clock enabled */
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+ CLOCK_EnableClock(kCLOCK_PortB);
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+ /* Port C Clock Gate Control: Clock enabled */
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+ CLOCK_EnableClock(kCLOCK_PortC);
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+ /* Port D Clock Gate Control: Clock enabled */
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+ CLOCK_EnableClock(kCLOCK_PortD);
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+ /* Port E Clock Gate Control: Clock enabled */
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+ CLOCK_EnableClock(kCLOCK_PortE);
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+
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+ gpio_pin_config_t led_config = { kGPIO_DigitalOutput, 0 };
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+ GPIO_PinInit(LED_GPIO, LED_PIN, &led_config);
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+ PORT_SetPinMux(LED_PORT, LED_PIN, kPORT_MuxAsGpio);
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+
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+ gpio_pin_config_t button_config = { kGPIO_DigitalInput, 0 };
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+ GPIO_PinInit(BUTTON_GPIO, BUTTON_PIN, &button_config);
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+ const port_pin_config_t BUTTON_CFG = {
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+ kPORT_PullUp,
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+ kPORT_FastSlewRate,
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+ kPORT_PassiveFilterDisable,
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+ kPORT_LowDriveStrength,
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+ kPORT_MuxAsGpio
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+ };
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+ PORT_SetPinConfig(BUTTON_PORT, BUTTON_PIN, &BUTTON_CFG);
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+
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+ /* PORTA1 (pin 23) is configured as LPUART0_RX */
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+ PORT_SetPinMux(PORTA, 1U, kPORT_MuxAlt2);
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+ /* PORTA2 (pin 24) is configured as LPUART0_TX */
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+ PORT_SetPinMux(PORTA, 2U, kPORT_MuxAlt2);
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+
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+ SIM->SOPT5 = ((SIM->SOPT5 &
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+ /* Mask bits to zero which are setting */
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+ (~(SIM_SOPT5_LPUART0TXSRC_MASK | SIM_SOPT5_LPUART0RXSRC_MASK)))
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+ /* LPUART0 Transmit Data Source Select: LPUART0_TX pin. */
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+ | SIM_SOPT5_LPUART0TXSRC(SOPT5_LPUART0TXSRC_LPUART_TX)
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+ /* LPUART0 Receive Data Source Select: LPUART_RX pin. */
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+ | SIM_SOPT5_LPUART0RXSRC(SOPT5_LPUART0RXSRC_LPUART_RX));
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+
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+ BOARD_BootClockRUN();
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+ SystemCoreClockUpdate();
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+ CLOCK_SetLpuart0Clock(1);
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+
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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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+
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+ lpuart_config_t uart_config;
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+ LPUART_GetDefaultConfig(&uart_config);
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+ uart_config.baudRate_Bps = CFG_BOARD_UART_BAUDRATE;
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+ uart_config.enableTx = true;
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+ uart_config.enableRx = true;
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+ LPUART_Init(UART_PORT, &uart_config, CLOCK_GetFreq(kCLOCK_McgIrc48MClk));
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+
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+ // USB
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+// SystemCoreClockUpdate();
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+ CLOCK_EnableUsbfs0Clock(kCLOCK_UsbSrcIrc48M, 48000000U);
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+// CLOCK_EnableUsbfs0Clock(kCLOCK_UsbSrcPll0, CLOCK_GetFreq(kCLOCK_PllFllSelClk));
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+}
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+
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+//--------------------------------------------------------------------+
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+// Board porting API
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+//--------------------------------------------------------------------+
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+
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+void board_led_write(bool state)
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+{
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+ GPIO_PinWrite(LED_GPIO, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
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+}
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+
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+uint32_t board_button_read(void)
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+{
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+ return BUTTON_STATE_ACTIVE == GPIO_PinRead(BUTTON_GPIO, BUTTON_PIN);
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+}
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+
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+int board_uart_read(uint8_t* buf, int len)
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+{
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+ LPUART_ReadBlocking(UART_PORT, buf, len);
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+ return len;
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+}
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+
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+int board_uart_write(void const * buf, int len)
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+{
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+ LPUART_WriteBlocking(UART_PORT, (uint8_t*)buf, len);
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+ return len;
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+}
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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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+{
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+ system_ticks++;
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+}
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+
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+uint32_t board_millis(void)
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+{
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+ return system_ticks;
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+}
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+#endif
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Greg Steiert