Initial project setup

managed_components/espressif__tinyusb/hw/bsp/kinetis_k32l2/family.c

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+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018, hathach (tinyusb.org)
+ * Copyright (c) 2020, Koji Kitayama
+ *
+ * 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 "fsl_gpio.h"
+#include "fsl_port.h"
+#include "fsl_clock.h"
+#include "fsl_lpuart.h"
+
+#include "clock_config.h"
+#include "bsp/board_api.h"
+#include "board.h"
+
+
+//--------------------------------------------------------------------+
+// Forward USB interrupt events to TinyUSB IRQ Handler
+//--------------------------------------------------------------------+
+void USB0_IRQHandler(void) {
+  tud_int_handler(0);
+}
+
+void board_init(void) {
+  /* Enable port clocks for GPIO pins */
+  CLOCK_EnableClock(kCLOCK_PortA);
+  CLOCK_EnableClock(kCLOCK_PortB);
+  CLOCK_EnableClock(kCLOCK_PortC);
+  CLOCK_EnableClock(kCLOCK_PortD);
+  CLOCK_EnableClock(kCLOCK_PortE);
+
+  BOARD_InitBootPins();
+  BOARD_BootClockRUN();
+  SystemCoreClockUpdate();
+
+  gpio_pin_config_t led_config = {kGPIO_DigitalOutput, 0};
+  GPIO_PinInit(LED_GPIO, LED_PIN, &led_config);
+  PORT_SetPinMux(LED_PORT, LED_PIN, kPORT_MuxAsGpio);
+
+#ifdef BUTTON_PIN
+  gpio_pin_config_t button_config = {kGPIO_DigitalInput, 0};
+  GPIO_PinInit(BUTTON_GPIO, BUTTON_PIN, &button_config);
+  const port_pin_config_t BUTTON_CFG = {
+      kPORT_PullUp,
+      kPORT_FastSlewRate,
+      kPORT_PassiveFilterDisable,
+#if defined(FSL_FEATURE_PORT_HAS_OPEN_DRAIN) && FSL_FEATURE_PORT_HAS_OPEN_DRAIN
+      kPORT_OpenDrainDisable,
+#endif
+      kPORT_LowDriveStrength,
+      kPORT_MuxAsGpio,
+#if defined(FSL_FEATURE_PORT_HAS_PIN_CONTROL_LOCK) && FSL_FEATURE_PORT_HAS_PIN_CONTROL_LOCK
+      kPORT_UnlockRegister
+#endif
+  };
+  PORT_SetPinConfig(BUTTON_PORT, BUTTON_PIN, &BUTTON_CFG);
+#endif
+
+#if CFG_TUSB_OS == OPT_OS_NONE
+  // 1ms tick timer
+  SysTick_Config(SystemCoreClock / 1000);
+#elif 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
+
+  lpuart_config_t uart_config;
+  LPUART_GetDefaultConfig(&uart_config);
+  uart_config.baudRate_Bps = CFG_BOARD_UART_BAUDRATE;
+  uart_config.enableTx = true;
+  uart_config.enableRx = true;
+  LPUART_Init(UART_PORT, &uart_config, UART_CLOCK_SOURCE_HZ);
+
+  // USB
+  CLOCK_EnableUsbfs0Clock(USB_CLOCK_SOURCE, 48000000U);
+}
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+void board_led_write(bool state) {
+  GPIO_PinWrite(LED_GPIO, LED_PIN, state ? LED_STATE_ON : (1 - LED_STATE_ON));
+}
+
+uint32_t board_button_read(void) {
+#ifdef BUTTON_PIN
+  return BUTTON_STATE_ACTIVE == GPIO_PinRead(BUTTON_GPIO, BUTTON_PIN);
+#else
+  return 0;
+#endif
+}
+
+int board_uart_read(uint8_t* buf, int len) {
+#if 0 /*
+	Use this version if want the LED to blink during BOARD=board_test,
+	without having to hit a key.
+      */
+  if( 0U != (kLPUART_RxDataRegFullFlag & LPUART_GetStatusFlags( UART_PORT )) )
+    {
+      LPUART_ReadBlocking(UART_PORT, buf, len);
+      return len;
+    }
+
+  return( 0 );
+#else /* Wait for 'len' characters to come in */
+
+  LPUART_ReadBlocking(UART_PORT, buf, len);
+  return len;
+
+#endif
+}
+
+int board_uart_write(void const* buf, int len) {
+  LPUART_WriteBlocking(UART_PORT, (uint8_t const*) buf, len);
+  return 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
+
+#ifndef __ICCARM__
+// Implement _start() since we use linker flag '-nostartfiles'.
+// Requires defined __STARTUP_CLEAR_BSS,
+extern int main(void);
+
+TU_ATTR_UNUSED void _start(void) {
+  // called by startup code
+  main();
+  while (1) {}
+}
+
+#ifdef __clang__
+void	_exit (int __status) {
+  while (1) {}
+}
+#endif
+
+#endif