Initial project setup

managed_components/espressif__tinyusb/hw/bsp/kinetis_k/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.
+ */
+
+/* metadata:
+   manufacturer: NXP
+*/
+
+#include "bsp/board_api.h"
+#include "board.h"
+#include "fsl_device_registers.h"
+#include "fsl_gpio.h"
+#include "fsl_port.h"
+#include "fsl_clock.h"
+#include "fsl_uart.h"
+#include "fsl_sysmpu.h"
+
+#include "board/clock_config.h"
+#include "board/pin_mux.h"
+
+//--------------------------------------------------------------------+
+// Forward USB interrupt events to TinyUSB IRQ Handler
+//--------------------------------------------------------------------+
+void USB0_IRQHandler(void) {
+#if CFG_TUH_ENABLED
+  tuh_int_handler(0);
+#endif
+#if CFG_TUD_ENABLED
+  tud_int_handler(0);
+#endif
+}
+
+void board_init(void) {
+  BOARD_InitBootPins();
+  BOARD_BootClockRUN();
+  SystemCoreClockUpdate();
+  SYSMPU_Enable(SYSMPU, 0);
+
+#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
+
+  // LED
+  gpio_pin_config_t led_config = { kGPIO_DigitalOutput, 0 };
+  GPIO_PinInit(LED_PORT, LED_PIN, &led_config);
+  board_led_write(false);
+
+#if defined(BUTTON_PORT) && defined(BUTTON_PIN)
+  gpio_pin_config_t button_config = { kGPIO_DigitalInput, 0 };
+  GPIO_PinInit(BUTTON_PORT, BUTTON_PIN, &button_config);
+#endif
+
+#ifdef UART_DEV
+  const uart_config_t uart_config = {
+      .baudRate_Bps = 115200UL,
+      .parityMode = kUART_ParityDisabled,
+      .stopBitCount = kUART_OneStopBit,
+      .txFifoWatermark = 0U,
+      .rxFifoWatermark = 1U,
+      .idleType = kUART_IdleTypeStartBit,
+      .enableTx = true,
+      .enableRx = true
+  };
+  UART_Init(UART_DEV, &uart_config, UART_CLOCK);
+#endif
+
+  // USB
+  // USB clock is configured in BOARD_BootClockRUN()
+}
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+void board_led_write(bool state) {
+  GPIO_PinWrite(LED_PORT, LED_PIN, state ? LED_STATE_ON : (1 - LED_STATE_ON));
+}
+
+uint32_t board_button_read(void) {
+#if defined(BUTTON_PORT) && defined(BUTTON_PIN)
+  return BUTTON_STATE_ACTIVE == GPIO_PinRead(BUTTON_PORT, BUTTON_PIN);
+#else
+  return 0;
+#endif
+}
+
+int board_uart_read(uint8_t *buf, int len) {
+  (void) buf;
+  (void) len;
+#ifdef UART_DEV
+  // Read blocking will block until there is data
+//  UART_ReadBlocking(UART_DEV, buf, len);
+//  return len;
+  return 0;
+#else
+  return 0;
+#endif
+}
+
+int board_uart_write(void const *buf, int len) {
+  (void) buf;
+  (void) len;
+
+#ifdef UART_DEV
+  UART_WriteBlocking(UART_DEV, (uint8_t const*) buf, len);
+  return len;
+#else
+  return 0;
+#endif
+}
+
+#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