added mbed lpc1768 board

hw/bsp/mbed1768/mbed1768.c

@@ -0,0 +1,179 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * 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.
+ */
+
+#include "chip.h"
+#include "../board.h"
+
+#define LED_PORT              1
+#define LED_PIN               18
+#define LED_STATE_ON          1
+
+// JOYSTICK_DOWN if using LPCXpresso Base Board
+#define BUTTON_PORT           0
+#define BUTTON_PIN            15
+#define BUTTON_STATE_ACTIVE   0
+
+#define BOARD_UART_PORT   LPC_UART3
+
+/* System oscillator rate and RTC oscillator rate */
+const uint32_t OscRateIn = 10000000;
+const uint32_t RTCOscRateIn = 32768;
+
+/* Pin muxing configuration */
+static const PINMUX_GRP_T pinmuxing[] =
+{
+  {LED_PORT,  LED_PIN,  IOCON_MODE_INACT | IOCON_FUNC0},
+  {BUTTON_PORT, BUTTON_PIN, IOCON_FUNC0 | IOCON_MODE_PULLUP},
+};
+
+static const PINMUX_GRP_T pin_usb_mux[] =
+{
+  {0, 29, IOCON_MODE_INACT | IOCON_FUNC1}, // D+
+  {0, 30, IOCON_MODE_INACT | IOCON_FUNC1}, // D-
+  {2,  9, IOCON_MODE_INACT | IOCON_FUNC1}, // Connect
+
+  {1, 19, IOCON_MODE_INACT | IOCON_FUNC2}, // USB_PPWR
+  {1, 22, IOCON_MODE_INACT | IOCON_FUNC2}, // USB_PWRD
+
+  /* VBUS is not connected on this board, so leave the pin at default setting. */
+  /*Chip_IOCON_PinMux(LPC_IOCON, 1, 30, IOCON_MODE_INACT, IOCON_FUNC2);*/ /* USB VBUS */
+};
+
+// Invoked by startup code
+void SystemInit(void)
+{
+  Chip_IOCON_Init(LPC_IOCON);
+  Chip_IOCON_SetPinMuxing(LPC_IOCON, pinmuxing, sizeof(pinmuxing) / sizeof(PINMUX_GRP_T));
+  Chip_SetupXtalClocking();
+}
+
+void board_init(void)
+{
+  SystemCoreClockUpdate();
+
+#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(USB_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY );
+#endif
+
+  Chip_GPIO_Init(LPC_GPIO);
+
+  // LED
+  Chip_GPIO_SetPinDIROutput(LPC_GPIO, LED_PORT, LED_PIN);
+
+  // Button
+  Chip_GPIO_SetPinDIRInput(LPC_GPIO, BUTTON_PORT, BUTTON_PIN);
+
+#if 0
+  //------------- UART -------------//
+  PINSEL_CFG_Type PinCfg =
+  {
+      .Portnum   = 0,
+      .Pinnum    = 0, // TXD is P0.0
+      .Funcnum   = 2,
+      .OpenDrain = 0,
+      .Pinmode   = 0
+  };
+	PINSEL_ConfigPin(&PinCfg);
+
+	PinCfg.Portnum = 0;
+	PinCfg.Pinnum  = 1; // RXD is P0.1
+	PINSEL_ConfigPin(&PinCfg);
+
+	UART_CFG_Type UARTConfigStruct;
+  UART_ConfigStructInit(&UARTConfigStruct);
+	UARTConfigStruct.Baud_rate = CFG_UART_BAUDRATE;
+
+	UART_Init(BOARD_UART_PORT, &UARTConfigStruct);
+	UART_TxCmd(BOARD_UART_PORT, ENABLE); // Enable UART Transmit
+#endif
+
+	//------------- USB -------------//
+  Chip_IOCON_SetPinMuxing(LPC_IOCON, pin_usb_mux, sizeof(pin_usb_mux) / sizeof(PINMUX_GRP_T));
+	Chip_USB_Init();
+
+  enum {
+    USBCLK_DEVCIE = 0x12,     // AHB + Device
+    USBCLK_HOST   = 0x19,     // AHB + Host + OTG
+//    0x1B // Host + Device + OTG + AHB
+  };
+
+  uint32_t const clk_en = TUSB_OPT_DEVICE_ENABLED ? USBCLK_DEVCIE : USBCLK_HOST;
+
+  LPC_USB->OTGClkCtrl = clk_en;
+  while ( (LPC_USB->OTGClkSt & clk_en) != clk_en );
+
+#if TUSB_OPT_HOST_ENABLED
+  // set portfunc to host !!!
+  LPC_USB->StCtrl = 0x3; // should be 1
+#endif
+}
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+void board_led_write(bool state)
+{
+  Chip_GPIO_SetPinState(LPC_GPIO, LED_PORT, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
+}
+
+uint32_t board_button_read(void)
+{
+  return BUTTON_STATE_ACTIVE == Chip_GPIO_GetPinState(LPC_GPIO, BUTTON_PORT, BUTTON_PIN);
+}
+
+int board_uart_read(uint8_t* buf, int len)
+{
+//  return UART_ReceiveByte(BOARD_UART_PORT);
+  (void) buf;
+  (void) len;
+  return 0;
+}
+
+int board_uart_write(void const * buf, int len)
+{
+//  UART_Send(BOARD_UART_PORT, &c, 1, BLOCKING);
+  (void) buf;
+  (void) len;
+  return 0;
+}
+
+#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