Squashed 'third_party/pico-sdk/lib/tinyusb/' content from commit 868948f67c
Change-Id: I5d33c2566dd597be9d4b1c30d4b3723c5ef4a265
git-subtree-dir: third_party/pico-sdk/lib/tinyusb
git-subtree-split: 868948f67c90fa7c2553cdcd604b52862cf55720
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/hw/bsp/stm32l0538disco/stm32l0538disco.c b/hw/bsp/stm32l0538disco/stm32l0538disco.c
new file mode 100644
index 0000000..f0f1d02
--- /dev/null
+++ b/hw/bsp/stm32l0538disco/stm32l0538disco.c
@@ -0,0 +1,205 @@
+/*
+ * 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 "../board.h"
+#include "stm32l0xx_hal.h"
+
+//--------------------------------------------------------------------+
+// Forward USB interrupt events to TinyUSB IRQ Handler
+//--------------------------------------------------------------------+
+void USB_IRQHandler(void)
+{
+ tud_int_handler(0);
+}
+
+//--------------------------------------------------------------------+
+// MACRO TYPEDEF CONSTANT ENUM
+//--------------------------------------------------------------------+
+#define LED_PORT GPIOA
+#define LED_PIN GPIO_PIN_5
+#define LED_STATE_ON 1
+
+#define BUTTON_PORT GPIOA
+#define BUTTON_PIN GPIO_PIN_0
+#define BUTTON_STATE_ACTIVE 1
+
+/**
+ * @brief System Clock Configuration
+ * The system Clock is configured as follow:
+ * HSI48 used as USB clock source
+ * - System Clock source = HSI
+ * - HSI Frequency(Hz) = 16000000
+ * - SYSCLK(Hz) = 16000000
+ * - HCLK(Hz) = 16000000
+ * - AHB Prescaler = 1
+ * - APB1 Prescaler = 1
+ * - APB2 Prescaler = 1
+ * - Flash Latency(WS) = 0
+ * - Main regulator output voltage = Scale1 mode
+ * @param None
+ * @retval None
+ */
+static void SystemClock_Config(void)
+{
+ RCC_ClkInitTypeDef RCC_ClkInitStruct;
+ RCC_OscInitTypeDef RCC_OscInitStruct;
+ RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
+ static RCC_CRSInitTypeDef RCC_CRSInitStruct;
+
+ /* Enable HSI Oscillator to be used as System clock source
+ Enable HSI48 Oscillator to be used as USB clock source */
+ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_HSI48;
+ RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+ RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
+ HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+ /* Select HSI48 as USB clock source */
+ PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USB;
+ PeriphClkInitStruct.UsbClockSelection = RCC_USBCLKSOURCE_HSI48;
+ HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
+
+ /* Select HSI as system clock source and configure the HCLK, PCLK1 and PCLK2
+ clock dividers */
+ RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
+ RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
+ RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+ RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
+ RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+ HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0);
+
+ /*Configure the clock recovery system (CRS)**********************************/
+
+ /*Enable CRS Clock*/
+ __HAL_RCC_CRS_CLK_ENABLE();
+
+ /* Default Synchro Signal division factor (not divided) */
+ RCC_CRSInitStruct.Prescaler = RCC_CRS_SYNC_DIV1;
+ /* Set the SYNCSRC[1:0] bits according to CRS_Source value */
+ RCC_CRSInitStruct.Source = RCC_CRS_SYNC_SOURCE_USB;
+ /* HSI48 is synchronized with USB SOF at 1KHz rate */
+ RCC_CRSInitStruct.ReloadValue = __HAL_RCC_CRS_RELOADVALUE_CALCULATE(48000000, 1000);
+ RCC_CRSInitStruct.ErrorLimitValue = RCC_CRS_ERRORLIMIT_DEFAULT;
+ /* Set the TRIM[5:0] to the default value*/
+ RCC_CRSInitStruct.HSI48CalibrationValue = 0x20;
+ /* Start automatic synchronization */
+ HAL_RCCEx_CRSConfig (&RCC_CRSInitStruct);
+}
+
+void board_init(void)
+{
+ SystemClock_Config();
+
+#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
+
+ GPIO_InitTypeDef GPIO_InitStruct;
+
+ // LED
+ __HAL_RCC_GPIOA_CLK_ENABLE();
+ GPIO_InitStruct.Pin = LED_PIN;
+ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStruct.Pull = GPIO_PULLUP;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+ HAL_GPIO_Init(LED_PORT, &GPIO_InitStruct);
+
+ board_led_write(false);
+
+ // Button
+ //__HAL_RCC_GPIOA_CLK_ENABLE();
+ GPIO_InitStruct.Pin = BUTTON_PIN;
+ GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+ GPIO_InitStruct.Pull = GPIO_PULLDOWN;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+ HAL_GPIO_Init(BUTTON_PORT, &GPIO_InitStruct);
+
+ // USB
+ /* Configure DM DP Pins */
+ __HAL_RCC_GPIOA_CLK_ENABLE();
+ GPIO_InitStruct.Pin = (GPIO_PIN_11 | GPIO_PIN_12);
+ GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+ /* Enable USB FS Clock */
+ __HAL_RCC_USB_CLK_ENABLE();
+}
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+void board_led_write(bool state)
+{
+ HAL_GPIO_WritePin(LED_PORT, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
+}
+
+uint32_t board_button_read(void)
+{
+ return BUTTON_STATE_ACTIVE == HAL_GPIO_ReadPin(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
+
+void HardFault_Handler (void)
+{
+ asm("bkpt");
+}
+
+// Required by __libc_init_array in startup code if we are compiling using
+// -nostdlib/-nostartfiles.
+void _init(void)
+{
+
+}