Initial project setup

managed_components/espressif__tinyusb/hw/bsp/ch32f20x/family.c

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+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2023 Denis Krasutski
+ *
+ * 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: WCH
+*/
+
+#include "stdio.h"
+#include "debug_uart.h"
+
+#include "ch32f20x.h"
+
+#include "bsp/board_api.h"
+#include "board.h"
+
+//--------------------------------------------------------------------+
+// Forward USB interrupt events to TinyUSB IRQ Handler
+//--------------------------------------------------------------------+
+
+void USBHS_IRQHandler(void)
+{
+  tud_int_handler(0);
+}
+
+void board_init(void) {
+
+  /* Disable interrupts during init */
+  __disable_irq();
+
+#if CFG_TUSB_OS == OPT_OS_NONE
+  SysTick_Config(SystemCoreClock / 1000);
+#endif
+
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+  // If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
+  NVIC_SetPriority(USBHS_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
+#endif
+
+	usart_printf_init(115200);
+
+  // USB HS Clock config
+  RCC_USBCLK48MConfig(RCC_USBCLK48MCLKSource_USBPHY);
+  RCC_USBHSPLLCLKConfig(RCC_HSBHSPLLCLKSource_HSE);
+  RCC_USBHSConfig(RCC_USBPLL_Div2);
+  RCC_USBHSPLLCKREFCLKConfig(RCC_USBHSPLLCKREFCLK_4M);
+  RCC_USBHSPHYPLLALIVEcmd(ENABLE);
+  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_USBHS, ENABLE);
+
+  // LED
+  LED_CLOCK_EN();
+  GPIO_InitTypeDef led_pin_config = {
+    .GPIO_Pin = LED_PIN,
+    .GPIO_Mode = GPIO_Mode_Out_OD,
+    .GPIO_Speed = GPIO_Speed_50MHz,
+  };
+  GPIO_Init(LED_PORT, &led_pin_config);
+
+  // Button
+  BUTTON_CLOCK_EN();
+  GPIO_InitTypeDef button_pin_config = {
+    .GPIO_Pin = BUTTON_PIN,
+    .GPIO_Mode = GPIO_Mode_IPU,
+    .GPIO_Speed = GPIO_Speed_50MHz,
+  };
+  GPIO_Init(BUTTON_PORT, &button_pin_config);
+
+  /* Enable interrupts globally */
+  __enable_irq();
+}
+
+#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
+
+void HardFault_Handler(void)
+{
+  __asm("BKPT #0\n");
+}
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+void board_led_write(bool state)
+{
+  GPIO_WriteBit(LED_PORT, LED_PIN, state);
+}
+
+uint32_t board_button_read(void)
+{
+  return BUTTON_STATE_ACTIVE == GPIO_ReadInputDataBit(BUTTON_PORT, BUTTON_PIN);
+}
+
+int board_uart_read(uint8_t *buf, int len)
+{
+  (void) buf;
+  (void) len;
+  return 0;
+}
+
+int board_uart_write(void const *buf, int len)
+{
+  int txsize = len;
+  while ( txsize-- )
+  {
+    uart_write(*(uint8_t const*) buf);
+    buf++;
+  }
+  return len;
+}