add tinyusb

tinyusb/hw/bsp/lpcxpresso11u37/lpcxpresso11u37.c

@@ -0,0 +1,208 @@
+/* 
+ * 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"
+
+//--------------------------------------------------------------------+
+// Forward USB interrupt events to TinyUSB IRQ Handler
+//--------------------------------------------------------------------+
+void USB_IRQHandler(void)
+{
+  tud_int_handler(0);
+}
+
+//---------------------------------------------------------------- ----+
+// MACRO TYPEDEF CONSTANT ENUM
+//--------------------------------------------------------------------+
+#define LED_PORT              1
+#define LED_PIN               24
+#define LED_STATE_ON          0
+
+// Wake up Switch
+#define BUTTON_PORT           0
+#define BUTTON_PIN            16
+#define BUTTON_STATE_ACTIVE   0
+
+/* System oscillator rate and RTC oscillator rate */
+const uint32_t OscRateIn = 12000000;
+const uint32_t ExtRateIn = 0;
+
+/* Pin muxing table, only items that need changing from their default pin
+   state are in this table. Not every pin is mapped. */
+/* IOCON pin definitions for pin muxing */
+typedef struct {
+	uint32_t port : 8;			/* Pin port */
+	uint32_t pin : 8;			/* Pin number */
+	uint32_t modefunc : 16;		/* Function and mode */
+} PINMUX_GRP_T;
+
+static const PINMUX_GRP_T pinmuxing[] =
+{
+  {0,  3, (IOCON_FUNC1 | IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, // USB VBUS
+  {0,  6, (IOCON_FUNC1 | IOCON_MODE_INACT)},		/* PIO0_6 used for USB_CONNECT */
+
+  {0, 18, (IOCON_FUNC1 | IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, // UART0 RX
+  {0, 19, (IOCON_FUNC1 | IOCON_MODE_INACT | IOCON_DIGMODE_EN)}, // UART0 TX
+};
+
+/* Setup system clocking */
+static void SystemSetupClocking(void)
+{
+	volatile int i;
+
+	/* Powerup main oscillator */
+	Chip_SYSCTL_PowerUp(SYSCTL_POWERDOWN_SYSOSC_PD);
+
+	/* Wait 200us for OSC to be stablized, no status
+	   indication, dummy wait. */
+	for (i = 0; i < 0x100; i++) {}
+
+	/* Set system PLL input to main oscillator */
+	Chip_Clock_SetSystemPLLSource(SYSCTL_PLLCLKSRC_MAINOSC);
+
+	/* Power down PLL to change the PLL divider ratio */
+	Chip_SYSCTL_PowerDown(SYSCTL_POWERDOWN_SYSPLL_PD);
+
+	/* Setup PLL for main oscillator rate (FCLKIN = 12MHz) * 4 = 48MHz
+	   MSEL = 3 (this is pre-decremented), PSEL = 1 (for P = 2)
+	   FCLKOUT = FCLKIN * (MSEL + 1) = 12MHz * 4 = 48MHz
+	   FCCO = FCLKOUT * 2 * P = 48MHz * 2 * 2 = 192MHz (within FCCO range) */
+	Chip_Clock_SetupSystemPLL(3, 1);
+
+	/* Powerup system PLL */
+	Chip_SYSCTL_PowerUp(SYSCTL_POWERDOWN_SYSPLL_PD);
+
+	/* Wait for PLL to lock */
+	while (!Chip_Clock_IsSystemPLLLocked()) {}
+
+	/* Set system clock divider to 1 */
+	Chip_Clock_SetSysClockDiv(1);
+
+	/* Setup FLASH access to 3 clocks */
+	Chip_FMC_SetFLASHAccess(FLASHTIM_50MHZ_CPU);
+
+	/* Set main clock source to the system PLL. This will drive 48MHz
+	   for the main clock and 48MHz for the system clock */
+	Chip_Clock_SetMainClockSource(SYSCTL_MAINCLKSRC_PLLOUT);
+
+	/* Set USB PLL input to main oscillator */
+	Chip_Clock_SetUSBPLLSource(SYSCTL_PLLCLKSRC_MAINOSC);
+	/* Setup USB PLL  (FCLKIN = 12MHz) * 4 = 48MHz
+	   MSEL = 3 (this is pre-decremented), PSEL = 1 (for P = 2)
+	   FCLKOUT = FCLKIN * (MSEL + 1) = 12MHz * 4 = 48MHz
+	   FCCO = FCLKOUT * 2 * P = 48MHz * 2 * 2 = 192MHz (within FCCO range) */
+	Chip_Clock_SetupUSBPLL(3, 1);
+
+	/* Powerup USB PLL */
+	Chip_SYSCTL_PowerUp(SYSCTL_POWERDOWN_USBPLL_PD);
+
+	/* Wait for PLL to lock */
+	while (!Chip_Clock_IsUSBPLLLocked()) {}
+}
+
+// Invoked by startup code
+void SystemInit(void)
+{
+  SystemSetupClocking();
+  Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_RAM1);
+
+  /* Enable IOCON clock */
+  Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_IOCON);
+  for (uint32_t i = 0; i < (sizeof(pinmuxing) / sizeof(PINMUX_GRP_T)); i++)
+  {
+		Chip_IOCON_PinMuxSet(LPC_IOCON, pinmuxing[i].port, pinmuxing[i].pin, pinmuxing[i].modefunc);
+	}
+}
+
+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(USB0_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);
+
+  // USB: Setup PLL clock, and power
+	/* enable USB main clock */
+	Chip_Clock_SetUSBClockSource(SYSCTL_USBCLKSRC_PLLOUT, 1);
+	/* Enable AHB clock to the USB block and USB RAM. */
+	Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_USB);
+	Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_USBRAM);
+	/* power UP USB Phy */
+	Chip_SYSCTL_PowerUp(SYSCTL_POWERDOWN_USBPAD_PD);
+}
+
+//--------------------------------------------------------------------+
+// 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)
+{
+  (void) buf; (void) len;
+  return 0;
+}
+
+int board_uart_write(void const * buf, int len)
+{
+  (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