1 files changed, 203 insertions, 0 deletions
diff --git a/circuitpython/lib/tinyusb/hw/bsp/kuiic/kuiic.c b/circuitpython/lib/tinyusb/hw/bsp/kuiic/kuiic.c
new file mode 100644
index 0000000..737ef3f
--- /dev/null
+++ b/circuitpython/lib/tinyusb/hw/bsp/kuiic/kuiic.c
@@ -0,0 +1,203 @@
+/* 
+ * 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.
+ */
+
+#include "../board.h"
+#include "board.h"
+#include "fsl_smc.h"
+#include "fsl_gpio.h"
+#include "fsl_port.h"
+#include "fsl_clock.h"
+#include "fsl_lpuart.h"
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+#define SIM_OSC32KSEL_LPO_CLK         3U        /*!< OSC32KSEL select: LPO clock */
+#define SOPT5_LPUART1RXSRC_LPUART_RX  0x00u     /*!<@brief LPUART1 Receive Data Source Select: LPUART_RX pin */
+#define SOPT5_LPUART1TXSRC_LPUART_TX  0x00u     /*!<@brief LPUART1 Transmit Data Source Select: LPUART_TX pin */
+#define BOARD_BOOTCLOCKRUN_CORE_CLOCK 48000000U /*!< Core clock frequency: 48000000Hz */
+
+/*******************************************************************************
+ * Variables
+ ******************************************************************************/
+/* System clock frequency. */
+extern uint32_t SystemCoreClock;
+
+/*******************************************************************************
+ * Variables for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+const mcglite_config_t mcgliteConfig_BOARD_BootClockRUN = {
+    .outSrc          = kMCGLITE_ClkSrcHirc,  /* MCGOUTCLK source is HIRC */
+    .irclkEnableMode = kMCGLITE_IrclkEnable, /* MCGIRCLK enabled, MCGIRCLK disabled in STOP mode */
+    .ircs            = kMCGLITE_Lirc8M,      /* Slow internal reference (LIRC) 8 MHz clock selected */
+    .fcrdiv          = kMCGLITE_LircDivBy1,  /* Low-frequency Internal Reference Clock Divider: divided by 1 */
+    .lircDiv2        = kMCGLITE_LircDivBy1,  /* Second Low-frequency Internal Reference Clock Divider: divided by 1 */
+    .hircEnableInNotHircMode = true,         /* HIRC source is enabled */
+};
+const sim_clock_config_t simConfig_BOARD_BootClockRUN = {
+    .er32kSrc = SIM_OSC32KSEL_LPO_CLK,       /* OSC32KSEL select: LPO clock */
+    .clkdiv1  = 0x10000U,                    /* SIM_CLKDIV1 - OUTDIV1: /1, OUTDIV4: /2 */
+};
+
+/*******************************************************************************
+ * Code for BOARD_BootClockRUN configuration
+ ******************************************************************************/
+void BOARD_BootClockRUN(void)
+{
+    /* Set the system clock dividers in SIM to safe value. */
+    CLOCK_SetSimSafeDivs();
+    /* Set MCG to HIRC mode. */
+    CLOCK_SetMcgliteConfig(&mcgliteConfig_BOARD_BootClockRUN);
+    /* Set the clock configuration in SIM module. */
+    CLOCK_SetSimConfig(&simConfig_BOARD_BootClockRUN);
+    /* Set SystemCoreClock variable. */
+    SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK;
+}
+
+
+//--------------------------------------------------------------------+
+// 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);
+
+  
+  gpio_pin_config_t led_config = { kGPIO_DigitalOutput, 1 };
+  GPIO_PinInit(GPIOA, 1U, &led_config);
+  PORT_SetPinMux(PORTA, 1U, kPORT_MuxAsGpio);  
+  led_config.outputLogic = 0;
+  GPIO_PinInit(GPIOA, 2U, &led_config);
+  PORT_SetPinMux(PORTA, 2U, 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, 
+    kPORT_LowDriveStrength, 
+    kPORT_MuxAsGpio
+  };
+  PORT_SetPinConfig(BUTTON_PORT, BUTTON_PIN, &BUTTON_CFG);
+#endif
+
+  /* PORTC3 is configured as LPUART0_RX */
+  PORT_SetPinMux(PORTC, 3U, kPORT_MuxAlt3);
+  /* PORTA2 (pin 24) is configured as LPUART0_TX */
+  PORT_SetPinMux(PORTE, 0U, kPORT_MuxAlt3);
+  
+  SIM->SOPT5 = ((SIM->SOPT5 &
+               /* Mask bits to zero which are setting */
+               (~(SIM_SOPT5_LPUART1TXSRC_MASK | SIM_SOPT5_LPUART1RXSRC_MASK)))
+               /* LPUART0 Transmit Data Source Select: LPUART0_TX pin. */
+               | SIM_SOPT5_LPUART1TXSRC(SOPT5_LPUART1TXSRC_LPUART_TX)
+               /* LPUART0 Receive Data Source Select: LPUART_RX pin. */
+               | SIM_SOPT5_LPUART1RXSRC(SOPT5_LPUART1RXSRC_LPUART_RX));
+
+  BOARD_BootClockRUN();
+  SystemCoreClockUpdate();
+  CLOCK_SetLpuart1Clock(1);
+
+#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, CLOCK_GetFreq(kCLOCK_McgIrc48MClk));
+
+  // USB
+  CLOCK_EnableUsbfs0Clock(kCLOCK_UsbSrcIrc48M, 48000000U);
+}
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+void board_led_write(bool state)
+{
+  if (state) {
+    LED_GPIO->PDDR |= GPIO_FIT_REG((1UL << LED_PIN));
+  } else {
+    LED_GPIO->PDDR &= GPIO_FIT_REG(~(1UL << LED_PIN));
+  }
+//  GPIO_PinWrite(GPIOA, 1, state ? LED_STATE_ON : (1-LED_STATE_ON) );
+//  GPIO_PinWrite(GPIOA, 2, state ? (1-LED_STATE_ON) : 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)
+{
+  LPUART_ReadBlocking(UART_PORT, buf, len);
+  return len;
+}
+
+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